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WO2008066413A1 - Installation à jets de fond de puits sur tuyau lisse souple destinée à l'exploration de puits horizontaux - Google Patents

Installation à jets de fond de puits sur tuyau lisse souple destinée à l'exploration de puits horizontaux Download PDF

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Publication number
WO2008066413A1
WO2008066413A1 PCT/RU2007/000527 RU2007000527W WO2008066413A1 WO 2008066413 A1 WO2008066413 A1 WO 2008066413A1 RU 2007000527 W RU2007000527 W RU 2007000527W WO 2008066413 A1 WO2008066413 A1 WO 2008066413A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
well
smooth pipe
housing
jet pump
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.)
Ceased
Application number
PCT/RU2007/000527
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English (en)
Russian (ru)
Inventor
Zinoviy Dmitrievich Khomynets
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2008066413A1 publication Critical patent/WO2008066413A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/124—Adaptation of jet-pump systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/464—Arrangements of nozzles with inversion of the direction of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Definitions

  • the invention relates to the field of pumping technology, mainly to downhole pumping units for testing and development of wells.
  • This downhole jet installation allows the formation to be processed in the well below the level of the jet pump installation, including creating a pressure differential above and below the sealing unit.
  • the capabilities of a downhole jet installation are not used to the full extent, which is associated with a large investment of time for replacing the inserts, which is often longer than the estimated reaction time of the acid solution with the minerals of the reservoir.
  • a downhole jet installation for horizontal well logging comprising a support ring installed in the casing in its lower section with a stepped passage channel for installing the sealing element, a smooth pipe string with an installed jet pump in it the casing of which has an active nozzle and a mixing chamber with a diffuser, and also a channel for supplying an active medium, a channel for supplying pumped from wells medium and a stepped passage channel, the latter providing the possibility of installing functional inserts, and a logging tool is installed at the lower end of the smooth pipe string, a sealing element is fitted between the last and the jet pump on the smooth pipe string with axial movement relative to the pipe string, and the lower section of the pipe pipes above the logging tool is perforated (RU JNi.2239730 Cl).
  • This downhole jet installation allows the study of horizontal wells and treatment of a productive formation in them.
  • the lack of a switch for the flow of the working medium narrows the possibilities of the installation for conducting a study of the productivity of the formation during its processing.
  • the objective of the present invention is to improve the quality of work to increase well production by expanding the functionality of the installation, in particular, taking curves of reservoir pressure recovery without stopping work for reinstallation in the well equipment used, for example, functional inserts such as blocking or depression, since the presence of the latter in this case is not required.
  • the technical result achieved by the implementation of the invention is to increase the reliability and productivity of the downhole jet unit during processing of the reservoir and testing the well.
  • the downhole jet installation includes a packer mounted on a flexible smooth pipe from bottom to top with a central channel made therein and an inkjet pump in the housing of which a nozzle and a mixing chamber with a diffuser are installed, while the output the diffuser is connected to the internal cavity of the flexible smooth pipe through the channel for discharging the mixture of media made in the jet pump housing, the nozzle of the jet pump is flexibly connected to the annulus to the annulus th smooth pipe, and the channel for supplying the fluid pumped out of the well in the housing of the jet pump is connected to the internal cavity of the flexible smooth pipe through the upper and lower windows made in the housing of the fluid pump, and a non-return valve is installed in the channel for supplying the pumped medium, located in the latter on the input side in it through the lower window, in the housing of the jet pump coaxially flexible smooth pipe mounted switch the flow of the medium, made in the form of axially movable support sleeve,
  • the hydrodynamic effect on the borehole zone of the well allows the most efficient use of the downhole jet unit during the development and repair of oil and gas wells during work to intensify the influx of oil from the reservoir.
  • the installation allows cleaning the producing formation from clogging particles and formation reaction products with b with chemical reagents, to carry out control measurements both before and during the treatment, which in turn allows us to evaluate the technical condition and productivity of the well, as well as the properties of the medium pumped out of the well. Based on the results of studying the inflow, it is possible to assess the quality of processing the borehole zone of the reservoir.
  • the installation with a switch of the flow of the working medium in the form of a support sleeve, spring-loaded relative to the housing allows the processing of the productive formation by pumping into the formation of chemicals and / or fracturing fluid through a flexible smooth pipe.
  • the support sleeve blocks the supply channels of the working and pumped media, which prevents them from clogging.
  • the execution of the support sleeve with a seat makes it possible to install a sealing assembly in the support sleeve with a device for bypassing the flow of fluid between the sub-packer and super-packer parts of the well, which makes it possible to register various characteristics of the well, for example, reservoir pressure recovery curves in the sub-packer zone, without reinstalling the equipment.
  • the downhole installation makes it possible to create a series of depressions of various magnitude using a jet pump in the sub-packer zone of the well with a given pressure drop, and using a complex logging tool to record pressure, temperature and other physical parameters of the well and the medium pumped out of the well, conduct research and testing wells, also record the recovery curve of reservoir pressure in the under-packer space of the well without using it specifically intended functional insert.
  • the channel for supplying the medium pumped out from the well with a non-return valve and two (upper and lower) windows eliminates the possibility of spontaneous overflow of the working medium into the sub-packer zone, both when the jet pump is operating and when it is not working.
  • a logging tool on a flexible smooth pipe with the possibility of axial movement of the latter in the well without using a packer (instead of the packer using a sealing element worn on a flexible smooth pipe) allows you to speed up and simplify the process of moving a complex logging tool in the well, and therefore simplify the testing process and well preparation for work.
  • the placement of a complex logging tool on a flexible smooth pipe makes it possible, due to its elastic properties, to place a logging tool in the zone of productive formations in horizontal sections of wells, which allows to obtain more quickly reliable information about the status of productive formations, the flow of formation fluid and its properties.
  • FIG. 1 is a longitudinal sectional view of a downhole jet unit during the treatment of a formation with chemicals or hydraulic fracturing fluid.
  • Figure 2 presents a longitudinal section of a downhole jet unit with a sealing unit and a complex logging tool located in the zone of the reservoir during the study of the well.
  • Fig.3 shows a longitudinal section of a downhole jet unit during its preparation for lifting the sealing unit to the surface.
  • the proposed downhole jet installation comprises a packer 2 mounted on a flexible smooth pipe 1 from bottom to top with a central channel 3 made therein and a jet pump 4, in the housing 5 of which a nozzle 6 and a mixing chamber 7 with a diffuser 8 are installed.
  • the diffuser 8 output is connected to the internal cavity flexible smooth pipe 1 through the channel 9 of the mixture of environments made in the housing 5 of the jet pump 4.
  • the nozzle 6 of the jet pump 4 from the entrance to it is connected to the annulus of the flexible smooth pipe 1.
  • the channel 10 for supplying the medium pumped out of the well in the housing 5 of the jet pump 4 is connected to the internal cavity of the flexible smooth pipe 1 through the upper one made in the housing 5 of the jet pump 4 11 and the lower window 12.
  • a check valve 13 located in the latter from the entrance to it through the bottom window 12.
  • a switch for the flow of the medium made in the form of axially movable support sleeve 14, spring-loaded relative to the housing 5.
  • Support sleeve 14 is made with placed in the bore 15 of the housing 5 with a stop flange 16 with the formation of an annular channel 17 communicated between the upper end wall and the annular space of the well between the outer wall of the support sleeve 14 and the wall of the bore 15 of the housing 5 of the casing 30, made in the housing 5 of the jet pump 4.
  • the upper 18 and lower 19 bypass openings and a seat 20 are made for installing the sealing assembly 21, which is lowered through the flexible smooth pipe 1, into the channel 21.
  • the channel exit 9 of the medium mixture outlet and the channel 10 for supplying the medium pumped out from the well is blocked by the latter, and in the lower position of the support sleeve 14, its upper end is located below the outlet of the channel 9 for removing the medium mixture.
  • the lower bypass openings 19 of the support sleeve 14 are connected with the entrance to the channel 10 for supplying the medium pumped out of the well.
  • the sealing unit 21 is made in the form of a hollow stepped cylindrical body 22, in the upper part of the cavity of which the sealing element 23 is placed, and a lower step 25, spring-loaded relative to the sealing element, is located, with an emphasis in the annular step 24 in the cavity of the housing 22 of the sealing unit 21 23.
  • holes 26 are made, which are blocked by a stepped piston 25 when it is located in the lower position.
  • the channel 10 for supplying the medium pumped out of the well is communicated above the check valve 13 with the internal cavity of the flexible smooth pipe 1 below the housing 5 of the jet pump 4 and at the same time the lower bypass openings 19 of the support sleeve 14 are in communication with the lower window 12 of the channel 10 for supplying the medium pumped out of the well.
  • axially axial channels are made for passing the wireline cable 27 with the cable head 28 through them, for connecting the wireline 27 to the complex wireline tool 29 installed on the lower end of the flexible smooth pipe 1.
  • a sealing element 31 made in the form of a profiled ring is movably mounted.
  • holes 32 are made, by means of which the internal cavity g bkoy smooth pipe 1 communicates with the well annulus below the packer 2.
  • Downhole jet installation operates as follows. On a flexible smooth pipe 1, a complex logging tool 29, a packer 2 and a jet pump 4 are lowered into a horizontal well, and the channels 9 and 10 are blocked by a support sleeve 14 spring-loaded relative to the housing 5 of the jet pump 4.
  • Integrated logging tool 29 is located in the zone of the reservoir (not shown) of a horizontal well. Unpacker 2 is unpacked, and then the acid solution and / or fracturing fluid are injected through a flexible smooth pipe 1 into a well formation. The packer 2 is brought into transport position, the integrated logging tool 29 is lifted and placed on a vertical section of a horizontal well.
  • the cable head 28 is connected to the complex logging tool 29, and the sealing assembly 21 is mounted on Seat 20 in the support sleeve 14.
  • Lower the integrated logging tool 29 into a horizontal well until it reaches the bottom of the well, recording the geophysical parameters of the well along its bore, per hour water pressure and temperature in the sub-packer zone, including in the zone of the reservoir.
  • the working medium is fed through the annular space of the flexible smooth pipe 1 under pressure, through which the sealing assembly 21 is displaced through the channel 30 to the stop flange 16 together with the support sleeve 14 to the lower position, freeing the outlet from the channel 9 for discharging the mixture of media and communicating the upper and lower the bypass holes 18 and 19 with the upper and lower windows 11 and 12 of the channel 10 for supplying the medium pumped out of the well.
  • the well By supplying the working medium under pressure through the annular space of the flexible smooth pipe 1 to the nozzle 6 of the jet pump 4, the well is drained and reaction products and / or liquids are removed from the reservoir fracturing with periodic measurement using a logging tool 29 well flow rates for various depressions on the reservoir and continuous recording of bottomhole pressure, as well as the composition of the liquid medium pumped from the reservoir. Further, without stopping the drainage of the well, raise the integrated logging tool 29 to the vertical section of the horizontal well and record the geophysical parameters in the sub-packer zone, including in the zone of the reservoir.
  • the jet pump 4 is stopped and through the check valve 13 in the channel 10 for supplying a pumped medium, the internal cavity of the flexible smooth pipe 1 above the jet pump 4 is divided together with the annulus above the packer 2 and the internal cavity of the flexible smooth pipe 1 under the jet pump 4 together with the under-packer space while maintaining a reduced bottomhole pressure under packer 2, at which the formation pressure recovery curve is recorded using a complex logging tool 29. Then disconnect the cable head 28 from the complex logging tool 29 and raise the wireline 27 with the cable head 28 until the latter contacts the step piston 25.
  • the present invention can be used in the oil and gas industry for the development of horizontal wells after drilling or for their underground repair in order to intensify hydrocarbon production or increase the injectivity of injection wells.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

L'invention concerne des équipements de pompage et tout particulièrement des installations à jets destinés aux tests et au développement de puits. Grâce à l'optimisation de la conception de l'installation, entre autres grâce à l'introduction dans ce composition d'un un commutateur de flux de milieu de travail qui se présente comme une douille d'appui précontraint par ressort, on assure une meilleure fiabilité de fonctionnement et un plus grand rendement de l'installation à jets de fond de puits utilisée lors du traitement de couches productrices de puits horizontaux. La douille comprend une bride d'appui disposée dans l'alésage du corps de manière à former un canal annulaire communiquant avec l'espace annulaire au moyen d'un canal réalisé dans le corps de la pompe à jets. Dans cette douille, on a réalisé des orifices de dérivation et un logement destiné à une unité d'étanchéité descendue via le tuyau lisse souple.
PCT/RU2007/000527 2006-11-29 2007-10-02 Installation à jets de fond de puits sur tuyau lisse souple destinée à l'exploration de puits horizontaux Ceased WO2008066413A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2006142063 2006-11-29
RU2006142063/06A RU2324079C1 (ru) 2006-11-29 2006-11-29 Скважинная струйная установка на гибкой гладкой трубе для исследования горизонтальных скважин

Publications (1)

Publication Number Publication Date
WO2008066413A1 true WO2008066413A1 (fr) 2008-06-05

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Application Number Title Priority Date Filing Date
PCT/RU2007/000527 Ceased WO2008066413A1 (fr) 2006-11-29 2007-10-02 Installation à jets de fond de puits sur tuyau lisse souple destinée à l'exploration de puits horizontaux

Country Status (2)

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RU (1) RU2324079C1 (fr)
WO (1) WO2008066413A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112523261A (zh) * 2020-11-26 2021-03-19 浙江世润建创科技发展有限公司 检查井原位浇筑内衬复合式修复施工方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2372530C1 (ru) * 2008-06-25 2009-11-10 Зиновий Дмитриевич Хоминец Скважинная струйная установка для каротажа и освоения горизонтальных скважин с аномально низкими пластовыми давлениями
RU2397375C1 (ru) * 2009-06-09 2010-08-20 Зиновий Дмитриевич Хоминец Скважинная струйная установка кэу-12 для каротажа и освоения горизонтальных скважин

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2176336C1 (ru) * 2000-10-30 2001-11-27 Зиновий Дмитриевич Хоминец Способ работы насосно-эжекторной скважинной установки
RU2239730C1 (ru) * 2003-11-20 2004-11-10 Зиновий Дмитриевич Хоминец Скважинная струйная установка для каротажа горизонтальных скважин и способ ее работы
RU2252339C1 (ru) * 2004-02-02 2005-05-20 Зиновий Дмитриевич Хоминец Скважинная струйная установка для каротажа горизонтальных скважин
WO2005059369A1 (fr) * 2003-12-19 2005-06-30 Zinoviy Dmitrievich Khomynets Installation de puits destinee a fonctionner dans des puits horizontaux et procede de fonctionnement correspondant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2176336C1 (ru) * 2000-10-30 2001-11-27 Зиновий Дмитриевич Хоминец Способ работы насосно-эжекторной скважинной установки
RU2239730C1 (ru) * 2003-11-20 2004-11-10 Зиновий Дмитриевич Хоминец Скважинная струйная установка для каротажа горизонтальных скважин и способ ее работы
WO2005059369A1 (fr) * 2003-12-19 2005-06-30 Zinoviy Dmitrievich Khomynets Installation de puits destinee a fonctionner dans des puits horizontaux et procede de fonctionnement correspondant
RU2252339C1 (ru) * 2004-02-02 2005-05-20 Зиновий Дмитриевич Хоминец Скважинная струйная установка для каротажа горизонтальных скважин

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112523261A (zh) * 2020-11-26 2021-03-19 浙江世润建创科技发展有限公司 检查井原位浇筑内衬复合式修复施工方法
CN112523261B (zh) * 2020-11-26 2022-02-15 浙江世润建创科技发展有限公司 检查井原位浇筑内衬复合式修复施工方法

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