CN110725671B - Pollution-free bailing type pumping unit capable of preventing damage - Google Patents
Pollution-free bailing type pumping unit capable of preventing damage Download PDFInfo
- Publication number
- CN110725671B CN110725671B CN201911217407.9A CN201911217407A CN110725671B CN 110725671 B CN110725671 B CN 110725671B CN 201911217407 A CN201911217407 A CN 201911217407A CN 110725671 B CN110725671 B CN 110725671B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- wire rope
- steel wire
- sucker rod
- pumping
- 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.)
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- 238000005086 pumping Methods 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000004804 winding Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/084—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/12—Rope clamps ; Rod, casings or tube clamps not secured to elevators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention particularly relates to an anti-damage pollution-free bailing type pumping unit, which solves the problems that the flexible pumping rod of the existing bailing type pumping unit is easy to damage, pollutes the environment and has larger measurement error. The utility model provides an anti-damage pollution-free bailing type pumping unit, includes oil pumping frame and hoist frame that distributes about, and oil pumping frame's top is provided with the head sheave, is provided with the hoist engine on the hoist frame, and the winding has one end to be located its right side, the flexible sucker rod that the other end and well head vertically correspond on the head sheave, is provided with the wire rope that one end was connected rather than on the hoist engine, is provided with the adapter of being connected with both between wire rope's the other end and the right-hand member of flexible sucker rod. The invention has reasonable and reliable structural design, thoroughly eliminates the phenomenon of surface damage of the flexible sucker rod, further ensures that the environment is not polluted, greatly shortens the stroke of the flexible sucker rod, improves the measurement accuracy, and has the advantages of simple structure, convenient operation and low cost.
Description
Technical Field
The invention relates to an oil pumping unit for petroleum exploitation, in particular to an anti-damage pollution-free bailing type oil pumping unit.
Background
At present, a bailing type pumping unit for petroleum exploitation generally has two mounting foundations, one is used for a wellhead to be aligned with a derrick, and the other is used for a hoisting winch.
The two installation foundations keep a certain distance, and the following defects exist: 1. the exposed part of the flexible sucker rod is useless and overlong, and the measurement error of control data is larger; 2. the flexible sucker rod is difficult to wind and arrange on the winding drum, and particularly, in the rope arranging process, the flexible sucker rods are mutually extruded and deformed, so that the surface of the flexible sucker rod is easy to be damaged; 3. after the surface of the flexible sucker rod is damaged, the ground forms a wick, and environmental pollution is caused.
Disclosure of Invention
The invention provides an anti-damage pollution-free bailing type pumping unit, which aims to solve the problems that the flexible sucker rod is easy to damage, pollutes the environment and has larger measurement error in the existing bailing type pumping unit.
The invention is realized by adopting the following technical scheme: the utility model provides an anti-damage pollution-free bailing type pumping unit, includes oil pumping frame and hoist frame that distributes about, and oil pumping frame's top is provided with the head sheave, is provided with the hoist engine on the hoist frame, and the winding has one end to be located its right side, the flexible sucker rod that the other end and well head vertically correspond on the head sheave, is provided with the wire rope that one end was connected rather than on the hoist engine, is provided with the adapter of being connected with both between wire rope's the other end and the right-hand member of flexible sucker rod.
In the mechanism design, the oil pumping frame is only responsible for aligning a flexible pumping rod with a wellhead, the flexible pumping rod does not participate in the rope arrangement of the lifting winch, the flexible pumping rod is bent once through a head sheave once every time the lifting winch is carried out, the flexible pumping rod does not participate in the winding and supporting bending of the winch, the winch frame is only responsible for the lifting force of the lifting winch and the load in the well, and the steel wire rope for the winch is only wound and unwound through a winding drum once every time the lifting winch is carried out, and the lifting winch does not pass through the head sheave; the exposed part of the flexible sucker rod is shortened, the measurement accuracy is improved, the flexible sucker rod does not participate in rope arrangement, the phenomenon of surface damage is avoided, and environmental pollution is avoided. The problems that the flexible sucker rod is easy to damage, pollutes the environment and has larger measurement error in the existing bailing type pumping unit are solved.
The adapter comprises sleeve-shaped flexible sucker rod joints and sleeve-shaped steel wire rope joints which are distributed left and right; the right end part of the sleeve-shaped flexible sucker rod joint is of a conical structure with the left inner diameter smaller than the right inner diameter, a stripping sleeve with the outer wall parallel to the inner wall is penetrated into the right end part of the sleeve-shaped flexible sucker rod joint, the right end part of the inner wall of the stripping sleeve is of a conical structure with the left inner diameter smaller than the right inner diameter, and the right end part of the sleeve-shaped flexible sucker rod joint is sleeved with a sleeve connected with the sleeve; the middle part of the sleeve-shaped steel wire rope connector is of a conical structure with the left inner diameter larger than the right inner diameter, and a universal hinge mechanism is arranged between the left side of the sleeve-shaped steel wire rope connector and the right side of the sleeve.
When the flexible sucker rod is connected with the steel wire rope, the flexible sucker rod is firstly penetrated into the left end part of the sleeve-shaped flexible sucker rod joint, then the nylon sleeve at the outer side of the flexible sucker rod is propped up to enter the gap between the stripping sleeve and the sleeve-shaped flexible sucker rod joint under the action of the stripping sleeve, and the steel wire rope at the center of the flexible sucker rod enters the stripping sleeve and bends the head part; after the steel wire rope penetrates into the middle part of the sleeve-shaped steel wire rope connector from the right end, the head part of the steel wire rope is bent, and the locking of the adapter is realized under the action of tensile force; the stripping sleeve realizes the stripping of the nylon sleeve and the steel wire rope of the flexible sucker rod, simultaneously ensures that the nylon sleeve and the steel wire rope synchronously move, and avoids the occurrence of the phenomenon of inching.
The universal hinge mechanism comprises a connecting rod penetrating into the left end part of the sleeve-shaped steel wire rope connector and rotating back and forth, a pin shaft penetrating through the connecting rod and placed up and down is arranged on the side wall of the sleeve-shaped steel wire rope connector, the right end of the sleeve is connected with a connecting rod I, and a pin shaft I arranged in the front-back direction is penetrated between the right end part of the connecting rod I and the left end part of the connecting rod.
Through the arrangement of the pin shafts and the pin shafts I, the universal rotation of the steel wire rope and the flexible sucker rod is realized, and the occurrence of the torsion phenomenon is avoided.
The shape of the winch base is L-shaped, the upper end face of the winch base is parallel to a steel wire rope of the winch, and a pumping sensor is arranged between the side wall of the winch base and the left side of the winch bottom plate.
The inclined arrangement of the winch base better ensures the accurate measurement of the pumping sensor.
The invention has reasonable and reliable structural design, thoroughly eliminates the phenomenon of surface damage of the flexible sucker rod, further ensures that the environment is not polluted, greatly shortens the stroke of the flexible sucker rod, improves the measurement accuracy, and has the advantages of simple structure, convenient operation and low cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the transfer joint in fig. 1.
In the figure: 1-oil pumping frame, 2-hoist frame, 3-head sheave, 4-hoist, 5-flexible sucker rod, 6-wire rope, 7-adapter, 8-sleeve-shaped flexible sucker rod joint, 9-sleeve-shaped wire rope joint, 10-stripping sleeve, 11-sleeve, 12-connecting rod, 13-pin, 14-connecting rod I, 15-pin I, 16-suction sensor, 17-stop lever, 18-lock nut, 19-stop lever I19, 20-U-shaped clamp plate, 21-base and 22-controller.
Detailed Description
The utility model provides an anti-damage pollution-free bailing type pumping unit, including controlling oil pumping frame 1 and hoist frame 2 that distribute, the top of oil pumping frame 1 is provided with head sheave 3, is provided with hoist engine 4 on the hoist frame 2, twines on the head sheave 3 has one end to be located its right side, the flexible sucker rod 5 that the other end vertically corresponds with the well head, is provided with wire rope 6 that one end was connected rather than on the hoist engine 4, is provided with the adapter 7 of being connected with both between the other end of wire rope 6 and the right-hand member of flexible sucker rod 5.
The adapter 7 comprises sleeve-shaped flexible sucker rod joints 8 and sleeve-shaped steel wire rope joints 9 which are distributed left and right; the right end part of the sleeve-shaped flexible pumping rod joint 8 is of a conical structure with the left inner diameter smaller than the right inner diameter, a stripping sleeve 10 with the outer wall parallel to the inner wall of the sleeve-shaped flexible pumping rod joint 8 is penetrated into the right end part of the sleeve-shaped flexible pumping rod joint 8, the right end part of the inner wall of the stripping sleeve 10 is of a conical structure with the left inner diameter smaller than the right inner diameter, and the right end part of the sleeve-shaped flexible pumping rod joint 8 is sleeved with a sleeve 11 connected with the sleeve-shaped flexible pumping rod joint; the middle part of the sleeve-shaped steel wire rope connector 9 is of a conical structure with the left inner diameter larger than the right inner diameter, and a universal hinge mechanism is arranged between the left side of the sleeve-shaped steel wire rope connector 9 and the right side of the sleeve 11.
The universal hinge mechanism comprises a connecting rod 12 penetrating into the left end part of a sleeve-shaped steel wire rope connector 9 and rotating back and forth, a pin shaft 13 penetrating through the connecting rod 12 and placed up and down is arranged on the side wall of the sleeve-shaped steel wire rope connector 9, a connecting rod I14 is connected to the right end of the sleeve 11, and a pin shaft I15 arranged in the front-back direction penetrates between the right end part of the connecting rod I14 and the left end part of the connecting rod 12.
The shape of the winch frame 2 is L-shaped, the upper end face of the winch frame 2 is parallel to the steel wire rope 6 of the winch 4, and a pumping sensor 16 is arranged between the side wall of the winch frame 2 and the left side of the bottom plate of the winch 4.
In the specific implementation process, firstly, the upper stroke starts, the winch 4 rotates to drive the steel wire rope 6, the adapter 7 and the flexible sucker rod 5 to start bailing type oil pumping, at this time, the adapter 7 approaches the winch 4 to stop the upper stroke, and when the lower stroke starts, the self weight drives the flexible sucker rod 5 to drive the adapter 7 and the steel wire rope to move, the winch 4 reversely rotates, and when the adapter 7 approaches the head sheave 3, the lower stroke stops, and one bailing working cycle is completed.
The up stroke stop and the down stroke stop are the strokes of the bailing type pumping unit, the stroke is the maximum stroke, and the actual stroke is smaller than the maximum stroke according to working requirements.
The lower end part of the pin shaft 13 is penetrated with a limit rod 17 which is arranged front and back, the left end part of the connecting rod I14 is screwed with a lock nut 18 which is clung to the inner side of the right wall of the sleeve 11, the left end surface of the lock nut 18 is provided with a limit groove, the limit groove is penetrated with a limit rod I19 which penetrates through the connecting rod I14, the right end of the connecting rod I14 is fixedly provided with a U-shaped clamping plate 20, and the U-shaped clamping plate 20 is sleeved at the end part of the pin shaft 13 and hinged through a pin shaft I15; the lower side of the hoist frame 2 is provided with a base 21, the base 21 is provided with a controller 22 connected with the input end of the pumping sensor 16, and safety pumping force, warning pumping force and dangerous pumping force indicators can be arranged through the controller 22.
Claims (2)
1. The utility model provides an anti-damage pollution-free bailing type pumping unit, includes oil pumping frame (1) and hoist frame (2) of controlling the distribution, and the top of oil pumping frame (1) is provided with head sheave (3), is provided with hoist engine (4) on hoist frame (2), its characterized in that: a flexible sucker rod (5) with one end positioned on the right side of the head pulley (3) and the other end vertically corresponding to the wellhead is wound on the head pulley (3), a steel wire rope (6) with one end connected with the head pulley is arranged on the winch (4), and an adapter (7) connected with the other end of the steel wire rope (6) and the right end of the flexible sucker rod (5) is arranged between the other end of the steel wire rope and the right end of the flexible sucker rod;
the adapter (7) comprises sleeve-shaped flexible sucker rod joints (8) and sleeve-shaped steel wire rope joints (9) which are distributed left and right; the right end part of the sleeve-shaped flexible pumping rod joint (8) is of a conical structure with the left inner diameter smaller than the right inner diameter, a stripping sleeve (10) with the outer wall parallel to the inner wall is penetrated into the right end part of the sleeve-shaped flexible pumping rod joint (8), the right end part of the inner wall of the stripping sleeve (10) is of a conical structure with the left inner diameter smaller than the right inner diameter, and the right end part of the sleeve-shaped flexible pumping rod joint (8) is sleeved with a sleeve (11) connected with the sleeve; the middle part of the sleeve-shaped steel wire rope connector (9) is of a conical structure with the left inner diameter larger than the right inner diameter, and a universal hinge mechanism is arranged between the left side of the sleeve-shaped steel wire rope connector (9) and the right side of the sleeve (11);
the shape of the winch base (2) is L-shaped, the upper end face of the winch base (2) is parallel to a steel wire rope (6) of the winch (4), and a pumping sensor (16) is arranged between the side wall of the winch base (2) and the left side of a bottom plate of the winch (4).
2. The damage-preventing pollution-free bailing type pumping unit according to claim 1, wherein: the universal hinge mechanism comprises a connecting rod (12) penetrating into the left end part of a sleeve-shaped steel wire rope connector (9) and rotating forwards and backwards, a pin shaft (13) penetrating through the connecting rod (12) and placed up and down is arranged on the side wall of the sleeve-shaped steel wire rope connector (9), the right end of a sleeve (11) is connected with a connecting rod I (14), and a pin shaft I (15) arranged in the front-rear direction is penetrated between the right end part of the connecting rod I (14) and the left end part of the connecting rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217407.9A CN110725671B (en) | 2019-12-03 | 2019-12-03 | Pollution-free bailing type pumping unit capable of preventing damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217407.9A CN110725671B (en) | 2019-12-03 | 2019-12-03 | Pollution-free bailing type pumping unit capable of preventing damage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110725671A CN110725671A (en) | 2020-01-24 |
| CN110725671B true CN110725671B (en) | 2024-06-18 |
Family
ID=69226445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911217407.9A Active CN110725671B (en) | 2019-12-03 | 2019-12-03 | Pollution-free bailing type pumping unit capable of preventing damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110725671B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201000A (en) * | 2007-10-17 | 2008-06-18 | 大庆石油管理局 | Flexible driving mechanism oil pumping device |
| CN105422082A (en) * | 2015-06-30 | 2016-03-23 | 贵州航天凯山石油仪器有限公司 | Method and device for installing load testing device on bailing type oil pumping unit |
| CN210918998U (en) * | 2019-12-03 | 2020-07-03 | 山西省平遥减速器有限责任公司 | Damage-proof pollution-free bailing type oil pumping machine |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640349A (en) * | 1985-06-14 | 1987-02-03 | Allen And Bennett, Inc. | Flexible sucker rod unit |
| CN86204321U (en) * | 1986-06-22 | 1988-02-24 | 刘维信 | Oil. pumping unit for flexible lifting system |
| CN2047297U (en) * | 1988-12-01 | 1989-11-08 | 韩惠临 | Flexible continuous oil-extracting rod |
| CN2371367Y (en) * | 1998-12-07 | 2000-03-29 | 大庆石油管理局第五采油厂 | Involute double hoisting sheave pumping unit |
| CN2386213Y (en) * | 1999-04-23 | 2000-07-05 | 汪福成 | Dual well self-balance compound wheel pumping unit |
| US6302797B1 (en) * | 2000-04-21 | 2001-10-16 | W. B. Driver | Flexible drill pipe |
| CN2497038Y (en) * | 2001-07-20 | 2002-06-26 | 辽河油田天兴实业发展中心 | Clip-type flexible sucker rod coupling sleeve |
| CN1369614A (en) * | 2002-03-07 | 2002-09-18 | 周小稀 | Pumping unit with low-speed synchronous motor |
| CN2729304Y (en) * | 2002-12-11 | 2005-09-28 | 李青 | Oil production device using flexible sucker rod |
| US7836955B2 (en) * | 2007-04-02 | 2010-11-23 | Precision Energy Services, Inc. | Wireline bailing system for removing large volumes of liquid from a borehole |
| CN201372745Y (en) * | 2009-03-26 | 2009-12-30 | 中国石化股份胜利油田分公司胜利采油厂 | Oil extractor beam hanger for preventing rotation |
| CN103382814B (en) * | 2013-07-25 | 2015-04-22 | 沧州润涛石油设备有限公司 | Flexible electric heating sucker rod |
| CN103643922A (en) * | 2013-12-19 | 2014-03-19 | 鄂德刚 | Short intelligent-control hoist type lifting oil extraction system with ultra long stroke and working method |
| CN105443107A (en) * | 2015-06-18 | 2016-03-30 | 贵州航天凯山石油仪器有限公司 | Method and device for testing different loads through fixed-range load testing wheel |
| CN204960922U (en) * | 2015-06-30 | 2016-01-13 | 贵州航天凯山石油仪器有限公司 | Bailing formula beam -pumping unit load testing arrangement |
| CN105443046B (en) * | 2015-12-31 | 2018-09-14 | 青岛新胜石油机械有限公司 | A kind of synthetic fibers flexible continuous pumping rod |
| US10480257B2 (en) * | 2016-09-13 | 2019-11-19 | Randy Downing | System for relieving lateral strain on a rod string within a wellbore |
| CN106761445A (en) * | 2016-12-20 | 2017-05-31 | 大庆市华禹石油机械制造有限公司 | A kind of Fiberglass sucker rod and preparation facilities and preparation method on winding type oil pumper |
| US20180252051A1 (en) * | 2017-03-03 | 2018-09-06 | Proco Welding Inc. | Wire rope segment for damping transmission of cyclic forces to a downhole pump, and a system for pumping oil from a well using a wire rope segment |
| CN208441790U (en) * | 2018-06-27 | 2019-01-29 | 唐山冀东石油机械有限责任公司 | Flexible sucker rod centering dropout prevention device |
-
2019
- 2019-12-03 CN CN201911217407.9A patent/CN110725671B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201000A (en) * | 2007-10-17 | 2008-06-18 | 大庆石油管理局 | Flexible driving mechanism oil pumping device |
| CN105422082A (en) * | 2015-06-30 | 2016-03-23 | 贵州航天凯山石油仪器有限公司 | Method and device for installing load testing device on bailing type oil pumping unit |
| CN210918998U (en) * | 2019-12-03 | 2020-07-03 | 山西省平遥减速器有限责任公司 | Damage-proof pollution-free bailing type oil pumping machine |
Non-Patent Citations (1)
| Title |
|---|
| 李波 ; .柔性连续抽油杆采油技术运行参数优化研究.石油机械.2012,47-50. * |
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| CN110725671A (en) | 2020-01-24 |
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