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WO2025090686A1 - Procédé de régulation de pression à l'aide d'une charge de puissance et d'un élément de retard - Google Patents

Procédé de régulation de pression à l'aide d'une charge de puissance et d'un élément de retard Download PDF

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Publication number
WO2025090686A1
WO2025090686A1 PCT/US2024/052680 US2024052680W WO2025090686A1 WO 2025090686 A1 WO2025090686 A1 WO 2025090686A1 US 2024052680 W US2024052680 W US 2024052680W WO 2025090686 A1 WO2025090686 A1 WO 2025090686A1
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WO
WIPO (PCT)
Prior art keywords
gas
propellant
sections
housing
generating assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2024/052680
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English (en)
Inventor
Zachary Taylor
Kevin Morton
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Hunting Titan Inc
Original Assignee
Hunting Titan Inc
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Filing date
Publication date
Application filed by Hunting Titan Inc filed Critical Hunting Titan Inc
Publication of WO2025090686A1 publication Critical patent/WO2025090686A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs

Definitions

  • tubulars When completing a subterranean well for the production of fluids, minerals, or gases from underground reservoirs, several types of tubulars are placed downhole as part of the drilling, exploration, and completions process. These tubulars can include casing, tubing, pipes, liners, and devices conveyed downhole by tubulars of various types. Each well is unique, so combinations of different tubulars may be lowered into a well for a multitude of purposes.
  • a subsurface or subterranean well transits one or more formations.
  • the formation is a body of rock or strata that contains one or more compositions.
  • the formation is treated as a continuous body.
  • hydrocarbon deposits may exist.
  • a wellbore will be drilled from a surface location, placing a hole into a formation of interest.
  • Completion equipment will be put into place, including casing, tubing, and other downhole equipment as needed.
  • Perforating the casing and the formation with a perforating gun is a well-known method in the art for accessing hydrocarbon deposits within a formation from a wellbore.
  • a shaped charge is a term of art for a device that when detonated generates a focused output, high energy output, and/or high velocity jet. This is achieved in part by the geometry of the explosive in conjunction with an adjacent liner.
  • a shaped charge includes a metal case that contains an explosive material with a concave shape, which has a thin metal liner on the inner surface. Many materials are used for the liner; some of the more common metals include brass, copper, tungsten, and lead. When the explosive detonates, the liner metal is compressed into a super-heated, super pressurized jet that can penetrate metal, concrete, and rock.
  • Perforating charges are typically used in groups. These groups of perforating charges are typically held together in an assembly called a perforating gun. Perforating guns come in many styles, such as strip guns, capsule guns, port plug guns, and expendable hollow carrier guns. [0005] Perforating charges are typically detonated by detonating cord in proximity to a priming hole at the apex of each charge case. Typically, the detonating cord terminates proximate to the ends of the perforating gun. In this arrangement, an initiator at one end of the perforating gun can detonate all of the perforating charges in the gun and continue a ballistic transfer to the opposite end of the gun. In this fashion, numerous perforating guns can be connected end to end with a single initiator detonating all of them.
  • the detonating cord is typically detonated by an initiator triggered by a firing head.
  • the firing head can be actuated in many ways, including but not limited to electronically, hydraulically, and mechanically.
  • Bridge plugs are often introduced or carried into a subterranean oil or gas well on a conduit, such as wire line, electric line, continuous coiled tubing, threaded work string, or the like, for engagement at a pre-selected position within the well along another conduit having an inner smooth inner wall, such as casing.
  • the bridge plug is typically expanded and set into position within the casing.
  • the bridge plug effectively seals off one section of casing from another.
  • Several different completions operations may commence after the bridge plug is set, including perforating and fracturing.
  • a series of plugs are set in an operation called “plug and perf ’ where several sections of casing are perforated sequentially. When the bridge plug is no longer needed the bridge plug is reamed, often though drilling, reestablishing fluid communication with the previously sealed off portion of casing.
  • Setting a bridge plug typically requires setting a “slip” mechanism that engages and locks the bridge plug with the casing and energizing the packing element in the case of a bridge plug. This requires large forces, often in excess of 20,000 lbs.
  • the activation or manipulation of some setting tools involves the activation of an energetic material such as an explosive pyrotechnic or black powder charge to provide the energy needed to deform a bridge plug.
  • the energetic material may use a relatively slow burning chemical reaction to generate high pressure gases.
  • One such setting tool is the Model E-4 Wireline Pressure Setting Tool of Baker International Corporation, sometimes referred to as the Baker Setting Tool.
  • the pressure from the power charge igniting is contained with the power charge chamber by the sealed firing head.
  • the pressure builds in the chamber and causes a floating first piston to move down through the tool, compressing the oil reservoir through a small hole in a connector sub.
  • the oil is pressed through the small hole in the connector sub and against a second piston.
  • the hydraulic force applied against the second piston causes the piston to move.
  • the second piston is coupled to a setting sleeve by way of a piston rod and sleeve crosslink.
  • the setting sleeve moves away axially from the setting tool and compresses the outside of a bridge plug.
  • a mandrel located down the center of the tool stays stationary. The mandrel is connected to the bridge plug via a shear stud. After the bridge plug is set, the setting tool is pulled upwards in the borehole until sufficient force is generated to shear the shear stud, thus separating the setting tool from the bridge Plug.
  • the explosive setting tool remains pressurized and must be raised to the surface and depressurized. This typically entails bleeding pressure off the setting tool by piercing a rupture disk or releasing a valve.
  • An example embodiment may include a downhole setting tool comprising a housing, a firing head containing fire control electronics coupled to the housing and further connected to a wireline, wherein the wireline is in communication with a surface controller, a plurality of igniter control fire switches located in the firing head, a plurality of propellant gas generators disposed side-by-side with a plurality of inert material sections within the housing, a plurality of igniters, each disposed within one of the plurality of propellant gas generators, a plurality of wires connecting the plurality of igniter control fire switches to the plurality of igniters, respectively, wherein each of the plurality of propellant gas generators is selectively ignited in a sequence to create a desired gas generation rate.
  • a variation of the example embodiment may include the plurality of inert material sections isolating the plurality of propellant gas generators, thus preventing the ignition of any one propellant gas generator from igniting another propellant gas generator. It may include a plurality of ground wires grounding each of the plurality of igniters to the housing.
  • the gas generation rate may be controlled from the surface.
  • the gas generation rate may pre-programmed into the fire control electronics in the firing head.
  • the one or more igniter control switches may send and receive signals from the surface.
  • the status of the igniters may be checked from the surface.
  • the resistance of the igniters may be checked from the surface.
  • An example embodiment may include a gas-generating assembly for a downhole setting tool, comprising a housing, a firing head located within the housing, the firing head containing an igniter for initiating combustion, a plurality of propellant sections disposed within a propellant chamber in the housing, a plurality of inert material sections disposed between each propellant section within the propellant chamber to isolate the propellant sections and regulate gas generation, a delay element within each inert material section configured to delay ignition between propellant sections, a gas passageway connecting the propellant chamber to an expansion chamber within the housing, a piston located within the expansion chamber, the piston configured to be actuated by gas generated from the propellant sections through the gas passageway, thereby translating to apply mechanical force to a plug, wherein the delay element controls the timing of gas generation to optimize pressure and regulate the movement of the piston within the expansion chamber.
  • a variation of the example embodiment may include the delay element comprising a chemically formulated slow-burning composition designed to incrementally ignite the propellant sections. It may include the delay element being an electronic delay circuit, pre-programmed to trigger the ignition of each propellant section at predetermined intervals.
  • the inert material sections may be composed of high-temperature-resistant materials, selected from the group consisting of steel, ceramic, and aluminum, to isolate the propellant sections from each other. It may include a plurality of igniter control switches connected to the firing head, wherein each igniter control switch is connected to a respective igniter for controlling the selective ignition of each propellant section.
  • the igniter control switches may be capable of sending and receiving signals to and from a surface controller to provide real-time status of the ignition sequence and the functionality of the igniters.
  • the gas passageway may include a plurality of perforations or gaps along the edges of the propellant and inert material sections to allow controlled flow of generated gas into the expansion chamber.
  • the piston may be coupled to a rod extending through the expansion chamber, and the rod is configured to apply mechanical force to a bridge plug during a wellbore operation.
  • the expansion chamber may contain shock-absorbing fluid surrounding the piston rod to dampen the impact of the piston's movement and reduce stress on the system.
  • the firing head may be connected to a wireline, and the ignition of the propellant sections can be manually controlled from a surface location through the wireline.
  • An example embodiment may include a method for regulating gas generation and pressure in a downhole setting tool, the method comprising providing a downhole setting tool with a housing, a firing head containing an igniter, a plurality of propellant sections, and a plurality of inert material sections isolating the propellant sections, initiating combustion within a first propellant section via the igniter in the firing head, delaying the ignition of subsequent propellant sections using a delay element disposed in the inert material sections between the propellant sections, allowing gas generated by the combustion to flow through a gas passageway into an expansion chamber within the housing, translating a piston located within the expansion chamber in response to the gas generation, thereby applying mechanical force to a plug, sequentially igniting each propellant section in a controlled manner, using the delay element to regulate the rate of gas generation and optimize pressure within the setting tool, controlling the timing of the ignition of the propellant sections from a surface controller.
  • a variation of the example embodiment may include monitoring the status of the igniters and delay elements from the surface using real-time feedback signals transmitted from the downhole setting tool.
  • the delay element may include a chemically formulated slow-burning composition, and the step of delaying ignition is achieved by the slow burn rate of the composition.
  • the delay element may be an electronic delay circuit, and the step of delaying ignition is controlled by pre-programmed instructions within the firing head. It may include adjusting the ignition timing of the propellant sections from the surface by sending commands to the igniter control switches. It may include damping the piston movement by introducing shock-absorbing fluid into the expansion chamber to reduce the impact and stress on the setting tool.
  • the gas passageway may include a plurality of perforations or gaps to allow the controlled flow of gas into the expansion chamber.
  • the method may include the step of manually controlling the ignition of the propellant sections from a surface location through a wireline connected to the firing head. It may include the step of providing inert material sections made of high-temperature-resistant materials, wherein the inert sections prevent premature ignition of adjacent propellant sections. After the piston has fully translated, the method may include the step of manually bleeding pressure from the expansion chamber by accessing a bleed port on the setting tool.
  • An example embodiment may include a gas-generating assembly for a downhole setting tool having a housing, a firing head located within the housing, the firing head containing an igniter for initiating combustion, a plurality of gas housing sections disposed within the housing, each gas housing section containing a propellant chamber, a propellant material located within the propellant chamber, an inert material section disposed adjacent to the propellant material, a delay element located within the inert material section to delay the ignition of the propellant material, a piston located within an expansion chamber, wherein gases generated from the ignition of the propellant material flow through a gas passageway to the expansion chamber, actuating the piston to provide mechanical force to a plug, wherein the plurality of gas housing sections are stacked within the housing, and the number of gas housing sections is variable depending on the application requirements, wherein the delay element regulates the sequential ignition of the propellant material in each gas housing section to control the rate of gas generation and pressure within the setting tool.
  • a variation of the example embodiment may include each of the plurality of gas housing sections containing a different quantity of propellant material, providing variability in the gas generation rate based on the application. It may include a plurality of igniter control fire switches connected to the firing head, wherein each igniter control fire switch is connected to a respective igniter within each gas housing section for selective ignition.
  • the firing head may be connected to a wireline, allowing the ignition of each gas housing section to be manually controlled from a surface location.
  • the propellant material in each gas housing section may be separated by the inert material section, and the inert material section is composed of high-temperature-resistant materials such as steel, aluminum, or ceramic.
  • the delay element may comprise a chemically formulated slow-burning composition designed to incrementally ignite each propellant material in sequence.
  • the delay element may be an electronic delay circuit pre-programmed to trigger ignition at predetermined intervals. It may include a gas passageway in each gas housing section to allow gases generated by combustion to flow through the passageway into the expansion chamber.
  • the expansion chamber may include a shock-absorbing fluid surrounding the piston.
  • the firing head may contain a plurality of igniters, each igniter configured to selectively ignite a corresponding gas housing section, allowing for staged ignition and pressure control.
  • An example embodiment may include a method for controlling gas generation and pressure in a downhole setting tool using a gas-generating assembly with stacked gas housing sections, the method comprising providing a downhole setting tool with a housing, a firing head containing an igniter, a plurality of gas housing sections, each containing a propellant material, an inert material section, and a delay element, initiating combustion in a first gas housing section by activating the igniter in the firing head, delaying the ignition of subsequent gas housing sections using the delay element in the inert material section between each gas housing section, allowing gas generated from the combustion of the propellant material to flow through a gas passageway into an expansion chamber, translating a piston located within the expansion chamber by the gas pressure, thereby applying mechanical force to a plug, sequentially igniting each gas housing section in a controlled manner using the delay element to regulate the gas generation rate and pressure buildup within the setting tool, adjusting the number and type of gas housing sections used based on the application requirements, to achieve the desired pressure profile and gas generation rate.
  • a variation of the example embodiment may include the delay element having a chemically formulated slow-burning composition to delay ignition of each subsequent gas housing section.
  • the delay element may be an electronic delay circuit that is pre-programmed to trigger ignition at predetermined intervals for each gas housing section. It may include the step of selectively igniting each gas housing section from a surface controller using a wireline connected to the firing head. It may include the step of monitoring the status of the igniters and delay elements from the surface using real-time feedback from the downhole setting tool.
  • the piston movement in the expansion chamber may be dampened by introducing shock-absorbing fluid into the chamber to reduce the impact and wear on the setting tool.
  • the inert material sections may be composed of high-temperature- resistant materials to isolate the propellant material in adjacent gas housing sections and prevent premature ignition.
  • An example embodiment may include a gas-generating assembly for a downhole setting tool, comprising a housing, a firing head located within the housing, the firing head containing an igniter for initiating combustion, a propellant cup holder disposed within the housing, the propellant cup holder comprising a plurality of propellant cups, each propellant cup containing a propellant material, the propellant cups disposed within cutouts in the propellant cup holder, a delay fuse strand coupled to the propellant cup holder and connecting the propellant cups in sequence, a piston located within an expansion chamber, wherein gases generated by the ignition of the propellant cups flow through a gas passageway to the expansion chamber, actuating the piston to provide mechanical force to a plug, wherein the delay fuse strand controls the sequential ignition of the propellant cups, thereby regulating the rate of gas generation and pressure buildup within the setting tool.
  • a variation of the example embodiment may include the delay fuse strand comprising a chemically formulated slow-burning composition designed to sequentially ignite the propellant cups in a controlled manner.
  • the propellant cup holder may be configured to securely retain the propellant cups using clips, allowing the propellant cups to remain in position during downhole operations.
  • the propellant cup holder may be preloaded with a plurality of propellant cups of varying sizes or compositions to achieve different gas generation rates and pressure profiles.
  • the firing head may be connected to a wireline, and the ignition of the propellant cups is controlled from a surface location.
  • the delay fuse strand may be pre-designed to provide a variable bum rate to control the time intervals between the ignition of the propellant cups.
  • the piston may be coupled to a rod extending through the expansion chamber, the rod configured to apply mechanical force to a bridge plug during a wellbore operation.
  • the expansion chamber may contain shock-absorbing fluid to dampen the movement of the piston and reduce the impact of sudden pressure changes during operation.
  • the firing head may contain a plurality of igniters, each igniter capable of selectively igniting a corresponding propellant cup based on a pre-programmed sequence.
  • An example embodiment may include a gas-generating assembly for a downhole setting tool, comprising a housing, a firing head located within the housing, the firing head containing a plurality of igniter control fire switches, a plurality of propellant sections disposed within a propellant chamber in the housing, each propellant section containing a propellant material, a plurality of inert material sections disposed between the propellant sections, isolating each propellant section from adjacent sections to prevent unintended ignition, a plurality of igniters, each igniter associated with a respective propellant section, a plurality of wires connecting the igniter control fire switches to the respective igniters for selective ignition, a piston located within an expansion chamber, wherein gases generated from the ignition of the propellant sections flow through a gas passageway into the expansion chamber, actuating the piston to provide mechanical force to a plug, wherein the igniter control fire switches selectively ignite the propellant sections in sequence to regulate the gas generation rate and pressure within the setting tool.
  • a variation of the example embodiment may include the ignition sequence of the propellant sections being controlled from a surface location through a wireline connected to the firing head.
  • the igniter control fire switches may be capable of receiving and transmitting signals to and from a surface controller to provide real-time status updates on the ignition process and the functionality of the igniters.
  • the inert material sections may be composed of high-temperature-resistant materials, selected from the group consisting of steel, ceramic, or aluminum, to isolate each propellant section and prevent premature ignition.
  • Each of the igniters may be grounded to the housing by a grounding wire. It may include a gas passageway within the housing, configured to allow gas generated by the ignition of the propellant sections to flow into the expansion chamber, thus actuating the piston.
  • the expansion chamber may contain shock-absorbing fluid surrounding the piston.
  • the firing head may be pre-programmed to ignite the propellant sections in a predetermined sequence, based on the specific application requirements of the setting tool.
  • the igniter control fire switches may be capable of being manually overridden from the surface to control the timing of the propellant section ignitions.
  • the number of propellant sections can be varied to adjust the total gas generation and pressure output, depending on the downhole operation requirements.
  • An example embodiment may include a gas-generating assembly for a downhole setting tool, comprising a housing, a firing head located within the housing, the firing head containing a plurality of igniter control fire switches, a plurality of stacked gas housing sections disposed within the housing, each gas housing section comprising, a propellant chamber, a propellant material located within the propellant chamber, an inert material section disposed adjacent to the propellant material, an igniter located within the propellant chamber, connected to the igniter control fire switch, a plurality of wires connecting the igniter control fire switches to the respective igniters, a gas passageway connecting the propellant chambers to an expansion chamber, a piston located within the expansion chamber, wherein gases generated by the ignition of the propellant material flow through the gas passageway to the expansion chamber, actuating the piston to provide mechanical force to a plug, wherein the igniter control fire switches selectively ignite each gas housing section in a controlled sequence, thereby regulating the gas generation rate and pressure within the setting tool.
  • a variation of the example embodiment may include each gas housing section being preloaded with varying amounts of propellant material to provide a variable gas generation rate based on the specific downhole operation requirements.
  • the ignition sequence of the gas housing sections may be controlled from a surface location via a wireline connected to the firing head.
  • the inert material sections may isolate the propellant material of each gas housing section, preventing unintended ignition of adjacent gas housing sections.
  • the igniter control fire switches may be capable of sending and receiving real-time signals to and from a surface controller, allowing status updates on the ignition process and functionality of the igniters. It may include shock-absorbing fluid within the expansion chamber.
  • Each of the igniters may be grounded to the housing via grounding wires.
  • the number of stacked gas housing sections can be adjusted based on the desired gas generation rate and pressure profile for the downhole application.
  • the delay between ignitions of the gas housing sections may be pre-programmed into the firing head.
  • the propellant material in each gas housing section may be selectively ignited to provide a staged gas generation process.
  • FIG. 1 shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 2A shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 2B shows an example embodiment of a cross-sectional side view of a gas generating housing section.
  • FIG. 3 shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 4 shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 5 shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 6A shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 6B shows an example embodiment of a cross-sectional side view of a gas generating housing section.
  • FIG. 7A shows an example embodiment of a cross-sectional side view of a gas generating propellant assembly.
  • FIG. 7B shows an example embodiment of a cross-sectional side view of a gas generating housing section.
  • the example embodiments described herein show a plurality of ways to control temperature within a wellbore tool, increase the wellbore tool lifespan, and increase the reliability of setting plugs.
  • the example embodiments relate to a method regulating pressure by initiating power charges at different time intervals with energetic or electronic delay elements.
  • Individual power charges and delay elements can be designed to best suit the requirements of the wellbore tool so that the desired gas pressure profde is achieved.
  • the power charges and energetic delay elements can differ chemically and/or in size.
  • Electronic delay elements can be pre-programmed or manually commanded to initiate power charges when desired.
  • An example embodiment includes one or more a power charge assemblies creating gas pressure in a wellbore tool using Individual segments for optimal gas generation within the process of the wellbore tool's function. Individual segments can vary in quantity, size, mass, geometry, chemical formulation, and orientation relative to tool. Delay elements may control the initiation of the individual segments to optimize bum time and overall pressure. Delay elements can be energetic or electronic in nature. Delays can be pre-programmed or controlled directly using electronics. Delay elements can be pre-designed chemically or by size to initiate at certain intervals.
  • FIG. 1 An example embodiment is shown in FIG. 1 of a gas generating assembly 110 that includes a setting tool 111 coupled to a firing head 114 and a plug 113 via piston 119 and rod 123.
  • the firing head 114 is connected to a cablehead 112.
  • the firing head 114 contains an igniter 118.
  • the setting tool 111 has a propellant chamber 131 that includes a plurality of propellant sections 117a- 117c and a plurality of inert material sections 116a and 116b. Each of the plurality of inert material sections 116a and 116b contain a slow delay fuse 121a and 121b.
  • the propellant sections are separated from each other via the inert material sections.
  • the setting tool contains a gas passageway 120 which allows gases to flow against the piston 119, causing it to translate in the expansion chamber 130.
  • the inert material sections 116a and 116b contain a slower burning delay composition.
  • the propellant bum rate of the propellant sections 117a- 117c is interrupted by the delay composition in the inert material section 116a and 116b, thus increasing the amount of time gas is generated in the propellant chamber.
  • FIG. 2A and 2B An example embodiment is shown in FIG. 2A and 2B of a gas generating assembly 210 that includes a setting tool 211 coupled to a plug 213 via piston 219 and rod 223.
  • the firing head 214 is coupled to a plurality of gas housing sections 224a-224c having a propellant chamber 23 la- 231c, each containing propellant 217a-217c, inert material 216a-216c, and slow burning propellant 221a-221c.
  • the firing head 214 contains an igniter 218.
  • the setting tool contains a gas passageway 220 allowing gases to flow against the piston 219, expanding in the expansion chamber 230, and pushing the piston 219 down the expansion chamber 230.
  • the gas housing sections 224a-224c may be preloaded with the propellant, inert material, and slow burning propellant.
  • the gas housing sections 224a-224c are stacked, the total number of gas housing sections can be tailored for the desired application. Moreover, different gas housing sections 224a-224c can be used, with varying amounts of propellant, inert material, and slow burning propellant to provide a wide variability of gas generation rate.
  • FIG. 3 An example embodiment is shown in FIG. 3 of a gas generating assembly 310 that includes a setting tool 311 coupled to a firing head 314 and a plug 313 via piston 319 and rod 323.
  • the firing head 314 is connected to a cablehead.
  • the firing head 314 contains an igniter 318.
  • the setting tool 311 has a propellant chamber 331 that includes a propellant cup holder 325 that contains one or more propellant cups 326 disposed within cutouts 327. Each propellant cup 326 is clipped onto the propellant cup holder 325 via clips 328, which are coupled to the delay fuse strand 321.
  • the gas generating propellant cups 326 are ignited in sequence by the slow burning delay fuse strand 321.
  • the gas generated in the propellant chamber 331 passes into the expansion chamber 323 via passageway 320.
  • the gas expands against the piston 319, rod 323, and piston 313 assembly, pushing the piston 313 away from the setting tool 311.
  • the propellant burn rate is interrupted by the delay composition of the slow burning delay fuse strand 321 for slower overall gas generation.
  • FIG. 4 An example embodiment is shown in FIG. 4 of a gas generating assembly 410 that includes a setting tool 411 coupled to a firing head 414 and a plug 413 via piston 419 and rod 423.
  • the firing head 414 is connected to wireline 412.
  • the firing head 414 contains igniter control fire switches 415a- 15c, each of which is connected wires 421a-421cto igniters 418a-418c.
  • Each igniter 418a-418c is grounded to the setting tool via grounding wires 422a-422c.
  • the setting tool 411 has a propellant chamber 431 that includes a plurality of propellant sections 417a-417c and a plurality of inert material sections 416a and 416b.
  • Each of the plurality of inert material sections 416a and 416b isolate the propellant sections from each other such that the ignition of one propellant section does not ignite the nearby propellant sections.
  • the setting tool contains a gas passageway 420 which allows gases to flow against the piston 419, causing it to translate in the expansion chamber 430.
  • each propellant section 417a-417c may be selectively ignited by the igniter control fire switch 415 in the firing head 414.
  • the overall propellant burn rate is controlled from the surface via wireline 412 or is pre-programmed in the setting tool 411.
  • FIG. 5 of a gas generating assembly 510 that includes a setting tool 511 coupled to a firing head 514 and a plug 513 via piston 519 and rod 523.
  • the firing head 514 is connected to wireline 512.
  • the firing head 514 is connected via wires 521a-521c to igniter control fire switches 515a-515c, each of which is connected to igniters 518a-518c.
  • Each igniter control fire switches 515a-515c is grounded to the setting tool via grounding wires 522a- 522c.
  • the setting tool 511 has a propellant chamber 531 that includes a plurality of propellant sections 517a-517c and a plurality of inert material sections 516a and 516b.
  • Each of the plurality of inert material sections 516a and 516b isolate the propellant sections from each other such that the ignition of one propellant section does not ignite the nearby propellant sections.
  • the setting tool contains a gas passageway 520 which allows gases to flow against the piston 519, causing it to translate in the expansion chamber 530.
  • each propellant section 517a-517c may be selectively ignited by the igniter control fire switches 515a-515c.
  • the overall propellant burn rate is controlled from the surface via wireline 512 or is preprogrammed in the setting tool 511.
  • FIG. 6A and 6B An example embodiment is shown in FIG. 6A and 6B of a gas generating assembly 610 that includes a setting tool 611 coupled to a firing head 614 and a plug 613 via piston 619 and rod 623.
  • the firing head 614 is connected to a wireline.
  • the firing head 614 is coupled to a plurality of gas housing sections 624a-624c having a propellant chamber 631a-631c, each containing propellant 617a-617c, inert material 616a-616c, igniter control fire switches 615a-615c, and igniters 618a-618c.
  • the firing head 614 is connected via wires 621a-621c to igniter control fire switches 615a-615c, each of which is connected to igniters 618a-618c.
  • Each igniter control fire switches 615a-615c is grounded to the setting tool via grounding wires 622a-622c.
  • Each of the plurality of inert material sections 616a-616c isolate the propellant sections from each other such that the ignition of one propellant section does not ignite the nearby propellant sections.
  • the setting tool contains a gas passageway 620 which allows gases to flow against the piston 619, causing it to translate in the expansion chamber 630.
  • each propellant section 617a-617c may be selectively ignited by the igniter control fire switches 615a-615c.
  • the overall propellant bum rate is controlled from the surface via wireline or is preprogrammed in the setting tool 611.
  • the gas housing sections 624a-624c are stacked, the total number of gas housing sections can be tailored for the desired application. Different gas housing sections 624a-624c may be used, with varying amounts of propellant to provide a wide variability of gas generation rate.
  • FIG. 7A and 7B of a gas generating assembly 710 that includes a setting tool 711 coupled to a firing head 714 and a plug 713 via piston 719 and rod 723.
  • the firing head 714 is connected to a wireline.
  • the firing head 714 is coupled to a plurality of gas housing sections 724a-724c having a propellant chamber 73 la-731c, each containing propellant 717a-717c, inert material 716a-716c, and igniters 718a-718c.
  • the firing head 714 contains igniter control fire switches 715a-715c, each is connected via wires 721a-721c to igniters 718a-718c.
  • Each igniter 718a-718c is grounded to the setting tool 711 via grounding wires 722a- 722c.
  • Each of the plurality of inert material sections 716a-716c isolate the propellant sections from each other such that the ignition of one propellant section does not ignite the nearby propellant sections.
  • the setting tool contains a gas passageway 720 which allows gases to flow against the piston 719, causing it to translate in the expansion chamber 730.
  • each propellant section 717a-717c may be selectively ignited by the igniter control fire switches 71 Sa- 715c.
  • the overall propellant burn rate is controlled from the surface via wireline or is pre-programmed in the setting tool 711.
  • the gas housing sections 724a-724c are stacked, the total number of gas housing sections can be tailored for the desired application. Different gas housing sections 724a-724c may be used, with varying amounts of propellant to provide a wide variability of gas generation rate.
  • Inert material may include steel, high temperature plastic, aluminum, ceramic, or some other material with a high heat tolerance.
  • the igniter control switch may both send and receive signals to surface to indicate its status, signals to indicate a successful ignition, signals to confirm switch integrity and electrical integrity, check resistance from the surface, both during assembly and/or during downhole operations. Ignition may involve ramping current from a surface location through the wireline to between 0.8- 1 amp, which may result in 99% chance of ignition under 5 seconds.
  • the gas generated in the propellant chamber can travel to the expansion chamber along a gap or a plurality of gaps between the outer edge of the propellant sections and the inner wall of the propellant chamber.
  • the propellant sections and the inert sections may be contained in a separate carrier that has openings or perforations to allow the gas to escape into the propellant chamber.
  • the propellant sections and inert sections may have passageways through them that allow the gases generated to flow towards the gas passageway and into the expansion chamber.
  • After ignition bleeding of the pressure in the expansion chamber may be achieved by a bleed port that is uncovered when the piston moves a predetermined distance. Bleed of pressure may be achieved manually by accessing a valve on the setting tool after it is brought to the surface.
  • the expansion chamber may include shock absorbing fluid, such as oil, surrounding the piston rod. Springs or a dampening material may be placed around the piston rod to further handle sudden shocks when moving the piston.
  • top and bottom can be substituted with uphole and downhole, respectfully.
  • Top and bottom could be left and right, respectively.
  • Uphole and downhole could be shown in figures as left and right, respectively, or top and bottom, respectively.
  • downhole tools initially enter the borehole in a vertical orientation, but since some boreholes end up horizontal, the orientation of the tool may change.
  • downhole, lower, or bottom is generally a component in the tool string that enters the borehole before a component referred to as uphole, upper, or top, relatively speaking.
  • the first housing and second housing may be top housing and bottom housing, respectfully.
  • a tool string such as described herein
  • the first, second, or third references, and the uphole or downhole references can be swapped as they are merely used to describe the location relationship of the various components.
  • Terms like wellbore, borehole, well, bore, oil well, and other alternatives may be used synonymously.
  • Terms like tool string, tool, perforating gun string, gun string, or downhole tools, and other alternatives may be used synonymously.
  • the alternative embodiments and operating techniques will become apparent to those of ordinary skill in the art in view of the present disclosure. Accordingly, modifications of the invention are contemplated which may be made without departing from the spirit of the claimed invention.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

L'invention concerne un procédé et un appareil utilisant un outil de pose avec un système de génération de gaz à retard variable, dans lequel une pluralité de sections de gaz propulseur peuvent être mises à feu individuellement pour produire une sortie de gaz variable en fonction des besoins de l'outil de pose, et qui permet également une communication entre une pluralité de commutateurs de mise à feu de commande d'allumage de l'outil de pose et la surface.
PCT/US2024/052680 2023-10-23 2024-10-23 Procédé de régulation de pression à l'aide d'une charge de puissance et d'un élément de retard Pending WO2025090686A1 (fr)

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US202363592572P 2023-10-23 2023-10-23
US63/592,572 2023-10-23

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089419A (en) * 1961-05-08 1963-05-14 Frank B Pollard Gas-generating power source
US3422760A (en) * 1966-10-05 1969-01-21 Petroleum Tool Research Inc Gas-generating device for stimulating the flow of well fluids
US20170016703A1 (en) * 2012-01-13 2017-01-19 Los Alamos National Security, Llc Detonation control
US20180148995A1 (en) * 2016-01-27 2018-05-31 Halliburton Energy Services, Inc. Autonomous pressure control assembly with state-changing valve system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089419A (en) * 1961-05-08 1963-05-14 Frank B Pollard Gas-generating power source
US3422760A (en) * 1966-10-05 1969-01-21 Petroleum Tool Research Inc Gas-generating device for stimulating the flow of well fluids
US20170016703A1 (en) * 2012-01-13 2017-01-19 Los Alamos National Security, Llc Detonation control
US20180148995A1 (en) * 2016-01-27 2018-05-31 Halliburton Energy Services, Inc. Autonomous pressure control assembly with state-changing valve system
US20200263514A1 (en) * 2016-01-27 2020-08-20 Halliburton Energy Services, Inc. Autonomous annular pressure control assembly for perforation event

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