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WO2002068788A2 - Unite de pompage de puits commandee par un moteur lineaire - Google Patents

Unite de pompage de puits commandee par un moteur lineaire Download PDF

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Publication number
WO2002068788A2
WO2002068788A2 PCT/US2002/006151 US0206151W WO02068788A2 WO 2002068788 A2 WO2002068788 A2 WO 2002068788A2 US 0206151 W US0206151 W US 0206151W WO 02068788 A2 WO02068788 A2 WO 02068788A2
Authority
WO
WIPO (PCT)
Prior art keywords
elongate flexible
flexible member
linear motor
motor
pumping unit
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/US2002/006151
Other languages
English (en)
Other versions
WO2002068788A3 (fr
Inventor
Zhou Xiaoxi
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.)
'castles' Home Services Inc
Castles Home Services Inc
Original Assignee
'castles' Home Services Inc
Castles Home Services Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 'castles' Home Services Inc, Castles Home Services Inc filed Critical 'castles' Home Services Inc
Priority to AU2002303108A priority Critical patent/AU2002303108A1/en
Priority to US10/469,070 priority patent/US7001157B2/en
Publication of WO2002068788A2 publication Critical patent/WO2002068788A2/fr
Publication of WO2002068788A3 publication Critical patent/WO2002068788A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/14—Counterbalancing
    • 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
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level

Definitions

  • the present invention relates well pumping and more specifically oil well pumping within the oil exploration and collection sector.
  • the present invention is directed to a well pumping unit wherein the pumping unit is driven by a linear motor.
  • Chinese ZL Patent No. 96217638.9 (CN 2284867Y filed July 22, 1996) is directed to a well pumping unit driven by a linear motor.
  • This technology adopts a linear motor that links to and drives the polished rod and rod pump, thus removing the gear box and force transforming structure required by units driven by rotary motion.
  • the unit's linear motor complex secondary and longitudinal position limiting switches are fixed on the wellhead; positioning blocks are fixed on both ends of the complex primary and slide against the position-limiting post, and the wellhead unit and the position-limiting post are respectively fixed with buffer springs.
  • the complex primary of the linear motor is hollow in structure through which the polished rod passes.
  • the polished rod and its clamping mechanism are fixed on the complex primary of the linear motor.
  • the clamping mechanism fixed to the complex primary is linked to the counter weight by way of a steel cable that passes over the slideway wheels.
  • the previous well pumping unit driven by a linear motor wherein the complex secondary of the linear motor and the position-limiting post are fixed on the wellhead assembly, has some unavoidable drawbacks.
  • motion of the linear motor causes vibration in the pumping unit and this is transferred directly to the wellhead unit.
  • the complex secondary and the position-limiting post are fixed on the well, the motion of the complex primary makes the wellhead unit vibrate, which weakens the wellhead unit seals and thus causes oil and/or natural gas leakage.
  • natural gas leakage occurs and the linear motor is directly fixed to the wellhead unit, natural gas can spread directly into the linear motor, which presents a serious risk of explosion.
  • the linear motor since the linear motor is fixed on the wellhead unit covering the opening part of the well, it makes maintenance of the wellhead unit and downhole components, such as changes of the packing and/or the packing set, difficult.
  • the linear motor since the linear motor is fixed on the wellhead, and the wellhead unit is linked to the downhole casing pipe, vibration of the motor makes the casing pipe vibrate, which in turn causes the formation to vibrate and the casing pipe to deform.
  • the linear motor is fixed on the wellhead, the wellhead unit cannot withstand large pressure. Thus, if the linear motor is fixed on the wellhead, additional design is required for the wellhead unit to withstand the large pressure, which requires more investment and cost associated with the oil recovery equipment.
  • the present invention is a well pumping unit driven by a linear motor which is mounted and supported away from an associated wellhead unit.
  • the well pumping unit includes a slideway support including an upper end and a lower end, said lower end mounted on a surface away from the associated wellhead unit.
  • Said slideway support including a counterweight chain wheel, a bottom support chain wheel and a polished rod chain wheel assembly.
  • Said counterweight chain wheel mounted at the upper end of said slideway support opposite the mount surface and adapted to engage and support a cable or chain.
  • Said bottom support chain wheel mounted at the lower end of said slideway support and adapted to engage and support a cable or chain.
  • Said polished rod chain wheel assembly mounted at the upper end of said slideway support opposite said counterweight chain wheel and adapted to engage and support a cable or chain.
  • the well pumping unit includes a linear motor assembly including a linear motor, a counter weight chain, a counter weight and a polished rod chain.
  • Said linear motor includes a motor complex primary and a motor complex secondary.
  • the motor complex secondary comprises a plurality of field generating electromagnets or windings and is mounted to the slideway support and adapted to interact with the complimentary motor complex primary.
  • the motor complex primary includes an upper end and a lower end and is suspended by a first end of the polished rod chain at the upper end of the motor complex primary in an operable position adjacent to the motor complex secondary.
  • the polished rod chain extends over and is supported by the polished rod chain wheel and is fixed to a polished rod of a wellhead unit at a second end of the polished rod chain.
  • a lower end of the motor complex primary is connected to a first end of the counter weight chain.
  • the counter weight chain extends down from the lower end of the motor complex primary, passes under and engages around the bottom support chain wheel, then extends up and over the counterweight chain wheel and is fixed at a second end of the counterweight chain to the counterweight.
  • the complex primary is made to move up and down whereby the polished rod is also made to move up and down and any vibration in the motor is not transferred to the wellhead unit.
  • Figure 1 is a side plan view of a well pumping unit of the present invention. Detailed Description of the Preferred Embodiments
  • Figure 1 shows a well pumping unit 20 constructed according to the present invention.
  • the well pumping unit generally includes a slideway support 1 1, a linear motor 25, a counter weight 7, a counterweight chain 6, a counterweight chain wheel 5, a bottom support chain wheel 10, a polished rod chain wheel assembly 4 and a polished rod chain 3.
  • the slideway support 11 comprises a plurality of large, parallel channel beams 1 la and 1 lb, which are mounted to and extending perpendicular to base l ie.
  • the slideway support 11 includes a top support beam 1 Id connecting the channel beams 1 la and 1 lb at an end opposite the base l ie.
  • Cross beams (not shown) optionally connect the channel beams 1 1 a and 1 1 b along the extent thereof to form a stable frame structure.
  • the frame structure may be welded or fixed by bolts or other suitable means known to those in the art.
  • channel beams can be replaced by I-shaped steel welded on steel plates.
  • the slideway support 11 includes a bottom support chain wheel 10 mounted to channel beam 1 1 a near the base 11 c and a counter weight chain wheel 5 mounted to the top support beam 1 Id.
  • a polished rod chain wheel assembly 4 is mounted on the top support beam 1 Id on an end opposite the counterweight chain wheel 5.
  • the polished rod chain wheel assembly 4 is shown comprising two chain wheels 4a and 4b of approximately 500 mm in diameter, however a skilled artisan will appreciate that a single larger diameter wheel could be used to reach the desired spacing necessary for operation of the well pumping unit.
  • the linear motor 25 comprises motor complex primary 8 and motor complex secondary 9.
  • the motor complex primary 8 comprises an upper end 8a and a lower end 8b and operable to receive and be driven by a field produced by the motor complex secondary 9.
  • the linear motor complex secondary 9 comprises a plurality of rectangular electromagnets or windings 9a-f fixed on both sides of the slideway support 11. Windings 9a-c are fixed on channel beam 1 la while windings 9d-f are fixed in complimentary positions on channel beam 1 1 b opposite windings 9a-c.
  • the linear motor is operable by sequentially varying the electrical supply communicated to individual windings 9a-f of the motor complex secondary 9, thus varying the magnetic field produced and driving the complimentary motor complex primary 8, as is well known in the art.
  • the slideway support 11 preferably includes a plurality of slideway rails (not shown) mounted internal to the channel beams 1 la and l ib, and which may be welded with four angle irons (not shown) in the inner part of the slideway support 11.
  • the slideway rails are adapted to control and limit the horizontal motion or horizontal direction of movement of the motor complex primary 8 , thereby guaranteeing or maintaining a substantially linear travel path for the motor complex primary 8.
  • the motor complex primary 8 optionally includes eight slideway blocks (not shown) which are operable to engage and slide along the slideway rails (not shown).
  • the eight slideway blocks on the motor complex primary 8 may optionally be replaced by rollers or other suitable wheels and roll along the slideway rails, accomplishing the guiding function.
  • the motor complex primary lower end 8b is connected to a first end 6a of the counterweight chain 6.
  • the counterweight chain 6 extends downwardly and passes partially around and engages the bottom support chain wheel 10. By passing partially around the bottom support chain wheel 10, the counterweight chain's 6 direction of travel is 180 degrees different on each side of the bottom support chain wheel 10. From the bottom support chain wheel 10, the counterweight chain 6 extends up toward the top support beam 11 d, passes over and engages the counterweight chain wheel 5, again changing the direction of travel 180 degrees on each side of the counterweight chain wheel 5. From the counterweight chain wheel 5, the counterweight chain extends downwardly and is affixed to a counterweight 7 at a second end 6b. The weight of the counterweight 7 should meet the requirement of the well and selection of such is well within the skill of person of ordinary skill in the art.
  • the motor complex primary upper end 8a is connected to a first end 3a of a polished rod chain 3.
  • the polished rod chain extends upwardly from the motor complex primary upper end 8a and passes over and engages the polished rod chain wheel assembly 4, thus changing direction 5 of travel by 180 degrees. From the polished rod chain wheel assembly 4, the polished rod chain extends downwardly to a second end 3b which is attached to a polished rod 2 of a wellhead unit 1.
  • the advantages of the present invention include that the upper end of the motor complex primary and the polished rod driven by the linear motor are connected by chains, cables, or other 0 suitable linkage through the polished rod chain wheel assembly.
  • the wellhead unit and polished rod are separated from the linear motor. Since the well pumping unit (linear motor) is mounted away and separate from the wellhead unit, leaking gas does not directly enter the linear motor so there is less risk of collection and explosion in the motor area. Also, the linear motor is not installed on the wellhead unit so the original wellhead unit can be kept in operation without 5 any significant modification.
  • the present invention is more convenient than a conventional spin-motor driven, beam- type unit.
  • the control unit of the linear motor allows for push-button set up and the individual adjustment of the length and duration of each stroke that is not possibly with conventional well pumping units that require difficult physical adjustments to the pumping apparatus. Additionally, 0 the vibration of the linear motor will not be transferred to and will not affect the downhole casing pipe of the well, which resolves the problem that the wellhead unit maintains high pressure.
  • the present inventive well pumping unit has few moving parts to fail, therefore the life expectancy of the pumping unit is increased. Further, since no gear box or rotational force transforming apparatus is required, the weight of the present inventive well pumping unit is greatly reduced,
  • a energy consumption comparative test evaluating the energy consumption of a conventional beam-type well pumping unit and a well pumping unit driven by a linear motor per the present invention was performed. Data was collected on the Ma-2 Well of the Rendong working area of the Peoples Republic of China.
  • the original well pumping unit was a convention beam-type CYJ10-48-73IIB driven by a conventional rotary force motor YCY280M 2 - 8 with a power rating of 45 (kW) and rated rotation speed of 740 (rpm).
  • the new well pumping unit constructed according to the present invention was ZXC Y- 1 with a linear motor power rated at 12 (kW).
  • the pumping units were each independently installed on the wellhead to compare the present invention including a linear motor with the conventional pumping unit in terms of energy-saving effect. Testing under working conditions of the well pumping unit driven by a linear motor on effective power (kW) and invalid power (kvar), regular electric parameters of running power factors are shown. The power-saving amount of the well pumping unit driven by a linear motor was calculated according to the oil amount produced by the two types of well pumping units running periodically. Measuring instruments included an electric power meter (HIOKI 3162), a pincer-like power meter (HIOKI 3266), stopwatch (CASIO HS-10W) and a thermohygrograph (6511). The results are depicted in Table 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Linear Motors (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

La présente invention concerne une unité de pompage de puits commandée par un moteur linéaire. Cette unité de pompage de puits comprend une glissière, un moteur linéaire équipé d'un primaire complexe et d'un secondaire complexe, une chaîne à tige polie, un ensemble de roue de chaîne à tige polie, une roue de chaîne de support inférieure, une roue de chaîne de contrepoids, une chaîne de contrepoids et un contrepoids. Le secondaire complexe, l'ensemble de roue de chaîne à tige polie, la roue de chaîne de support inférieure et la roue de chaîne de contrepoids sont fixés sur la glissière, le primaire complexe se déplaçant le long de la glissière. Une première extrémité de la chaîne à tige polie est fixée sur une extrémité supérieure du primaire complexe et passe par dessus l'ensemble de roue de chaîne à tige polie, la seconde extrémité étant fixée sur une tige polie. Une extrémité inférieure du primaire complexe est fixée sur une première extrémité de la chaîne de contrepoids, la chaîne de contrepoids passant par dessus la roue de chaîne de support inférieure et la roue de chaîne de contrepoids et étant fixée sur la seconde extrémité du contrepoids.
PCT/US2002/006151 2001-02-26 2002-02-25 Unite de pompage de puits commandee par un moteur lineaire Ceased WO2002068788A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002303108A AU2002303108A1 (en) 2001-02-26 2002-02-25 Well pumping unit driven by linear motor
US10/469,070 US7001157B2 (en) 2001-02-26 2002-02-25 Well pumping unit driven by linear motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN01204055.X 2001-02-26
CN01204055U CN2467821Y (zh) 2001-02-26 2001-02-26 直线电机驱动的抽油机

Publications (2)

Publication Number Publication Date
WO2002068788A2 true WO2002068788A2 (fr) 2002-09-06
WO2002068788A3 WO2002068788A3 (fr) 2003-04-24

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PCT/CN2002/000111 Ceased WO2002075105A1 (fr) 2001-02-26 2002-02-25 Unite de pompage commandee par un moteur electrique lineaire
PCT/US2002/006151 Ceased WO2002068788A2 (fr) 2001-02-26 2002-02-25 Unite de pompage de puits commandee par un moteur lineaire

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Country Status (4)

Country Link
US (1) US20060233650A1 (fr)
CN (1) CN2467821Y (fr)
AU (1) AU2002303108A1 (fr)
WO (2) WO2002075105A1 (fr)

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CN101718188A (zh) * 2009-12-25 2010-06-02 浙江西子富沃德电机有限公司 塔架式滑轮组传动抽油装置
CN102392620A (zh) * 2011-09-23 2012-03-28 李世龙 轮式智能抽油机
CN102733782A (zh) * 2012-01-16 2012-10-17 唐大春 一种油田采油用免润滑链条式抽油机
CN102926714A (zh) * 2012-11-14 2013-02-13 濮阳市军胜实业有限公司 抽油机链条传动装置及应用方法
WO2013071684A1 (fr) * 2011-11-15 2013-05-23 中国石油大学(华东) Unité de pompage de pétrole avec moteur à entraînement direct
CN103195395A (zh) * 2012-01-10 2013-07-10 张宏伟 一种变矩式节能抽油机
CN103821480A (zh) * 2013-04-07 2014-05-28 耿载光 游动配重双滚筒式石油抽油机
CN103835682A (zh) * 2014-03-27 2014-06-04 雍生才 新型节能抽油机及抽油方法
CN103867164A (zh) * 2012-12-11 2014-06-18 李江保 一种长冲程抽油机
CN104005738A (zh) * 2014-06-16 2014-08-27 福建省意科电气科技有限公司 一种塔架式抽油机
CN104612633A (zh) * 2015-01-20 2015-05-13 胜利油田新大管业科技发展有限责任公司 一种链条换向抽油机驱动装置及方法
CN105019867A (zh) * 2015-07-23 2015-11-04 浙江西传电气科技有限公司 一种皮带减速及带单个动滑轮的高效抽油机
CN105863572A (zh) * 2016-05-10 2016-08-17 北京高和华泰节能环保科技有限公司 抽油机智能控制系统及其抽油智能控制方法
WO2016123579A3 (fr) * 2015-01-29 2016-09-22 Weatherford Technology Holdings, Llc Unité de pompage à longue course
CN107013188A (zh) * 2017-05-16 2017-08-04 重庆排绳利科技有限公司 一种往复式柔性牵引抽油机构
CN108843284A (zh) * 2018-07-11 2018-11-20 重庆科技学院 一种柔性牵引抽油机的泄油机构
CN110173237A (zh) * 2019-05-21 2019-08-27 大庆丹诺石油科技开发有限公司 一种修井导向滚筒让位机构
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CN101413387B (zh) * 2008-12-03 2011-11-23 毛宏伟 塔架式组合传动抽油机
WO2010063171A1 (fr) * 2008-12-03 2010-06-10 陈达康 Unité de pompage sans contact de type colonne à montage sur le dessus
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CN104047577A (zh) * 2014-05-28 2014-09-17 河南理工大学 一种直线电机直驱抽油机
US10113544B2 (en) * 2015-02-23 2018-10-30 Weatherford Technology Holdings, Llc Long-stroke pumping unit
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US11131151B2 (en) 2017-03-02 2021-09-28 Weatherford Technology Holdings, Llc Tool coupler with sliding coupling members for top drive
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CN116146154B (zh) * 2023-04-24 2023-07-25 沈阳德尔福科技有限公司 智能曲柄式皮带抽油机
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Publication number Priority date Publication date Assignee Title
CN101718188A (zh) * 2009-12-25 2010-06-02 浙江西子富沃德电机有限公司 塔架式滑轮组传动抽油装置
CN101718188B (zh) * 2009-12-25 2013-01-23 浙江西子富沃德电机有限公司 塔架式滑轮组传动抽油装置
CN102392620A (zh) * 2011-09-23 2012-03-28 李世龙 轮式智能抽油机
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AU2002303108A1 (en) 2002-09-12
CN2467821Y (zh) 2001-12-26
WO2002075105A1 (fr) 2002-09-26
WO2002068788A3 (fr) 2003-04-24
US20060233650A1 (en) 2006-10-19

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