CN113417604A - Intelligent control winch type long-stroke non-beam pumping unit - Google Patents
Intelligent control winch type long-stroke non-beam pumping unit Download PDFInfo
- Publication number
- CN113417604A CN113417604A CN202110702521.1A CN202110702521A CN113417604A CN 113417604 A CN113417604 A CN 113417604A CN 202110702521 A CN202110702521 A CN 202110702521A CN 113417604 A CN113417604 A CN 113417604A
- Authority
- CN
- China
- Prior art keywords
- roller body
- bearing seat
- roller
- pumping unit
- square shaft
- 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
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000002265 prevention Effects 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 36
- 238000005516 engineering process Methods 0.000 description 2
- 239000000346 nonvolatile oil Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
The utility model provides an intelligent control winch formula long stroke does not have beam-pumping unit, belongs to oil gas development technical field, including winch cylinder assembly, drum body axial displacement traction system, numerical control and actuating system, frame assembly and oil recovery well head system. The invention effectively prolongs the service life of the steel wire rope, reduces transmission parts, directly takes force from the roller body, directly arranges the hollow traction nut on the roller body, and not only transmits torque but also serves as a slideway for the axial movement of the roller body, thereby greatly simplifying the whole structure; therefore, the manufacturing cost and the later maintenance cost are greatly reduced, and the operation reliability and the mechanical efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of oil and gas development, and particularly relates to a walking-beam-free oil pumping unit for oil and gas production.
Background
In the end of the 20 th century 50 s and in the beginning of the 60 s, the steel wire rope is used as a continuous flexible sucker rod, the technical field of sucker rod oil production is introduced, and the steel wire rope is used for replacing a conventional rigid sucker rod at home and abroad, and is particularly applied to the United states and the Soviet Union. In the 90 s, experts, major colleges and schools which are the first professor of Zhanghengwei in China and some manufacturers develop research and mine field tests in a certain scale, and make great progress and breakthrough, so that the foundation of theoretical and practical application is laid for the development of long-stroke walking-beam-free pumping units which take steel wire ropes as continuous pumping rods in the later period. However, due to the limited development degree of each subject technology and certain technical obstacles at the time, and no guidance and promotion of market demands at the time, the technology is not developed rapidly and has great breakthrough.
Since the 21 st century, a series of steel wire ropes have appeared as long-stroke walking-beam-free pumping units of continuous flexible sucker rods. For example, the fixed oil bailing device is applied in 3-month-20-year-2000, and the patent numbers are as follows: 00204034.4, respectively; the intelligent bailing pumping unit is applied for 6 months and 28 days in 2010, and the patent numbers are as follows: 20102026194. X; still have one kind can arrange oily device of fishing for of rope automatically, "the overhead formula fishing for oil device of winch" 2016 application 3 month 10, patent No.: ZL 201610133962.3; "a short type ultra-long stroke intelligent control coil-type oil extraction system and working method, application 5, month and 4 days 2014, patent number 2014101084063; and "a hoist oil recovery device" application 7/22/2014, patent no: 201410360663.4, respectively; an intelligent ultra-long stroke pumping unit is applied for 11 months and 14 days in 2019, and the patent application numbers are as follows: 201911112157.2, respectively; the flexible rod self-positioning walking-beam-free pumping unit is applied in No. 1/19/2020, application number: 202010057143.5.
the products formed by the above patents are long-stroke or ultra-long-stroke pumping units which take a steel wire rope as a continuous flexible sucker rod or a flexible polished rod and take a roller winch as a driving device. According to the function difference, one is an infinite length stroke (how long a deep rope is in a well) oil bailing machine in a full-well running mode, and the other is a non-beam pumping unit with a finite length stroke and a polished rod replaced by a steel wire rope. According to the structural distinction, the machine type is a horizontal machine and a vertical tower machine. The horizontal machine consists of two parts, namely a fixed winch roller assembly, a wellhead fixed pulley and a vertical frame. The patent "fixed oil bailing device" and "intelligent bailing pumping unit" all belong to this type. The vertical tower crane consists of a winch roller fixed above a tower and a wellhead tower. One of the two types of the winch drum assembly is fixedly arranged above a tower frame, and a pair of positioning pulleys are arranged above a well head to clamp a flexible polished rod so as to realize well head center positioning. The patent "a winch-type production unit" is of this type. The other is that the winch roller can axially move to automatically arrange the rope, so that the flexible polished rod can be automatically positioned at the wellhead. The patent "oil bailing device with upper winch"; "an intelligent ultra-long stroke pumping unit"; "flexible rod self-positioning walking-beam-free pumping unit"; are of this type.
The three products formed by the three patents of the type have the problems of complicated structure, long transmission chain length for the axial movement of the roller assembly, more relative movement parts, and the like, so that the manufacturing cost, the later maintenance cost, the reliability of equipment operation, the mechanical transmission efficiency and the like all have the problems of improvement and improvement.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the intelligent control winch type long-stroke walking-beam-free pumping unit is provided by taking a steel wire rope as a flexible polished rod and a winch drum as a driving body. The hollow traction nut is directly arranged on the roller body, and the roller shaft not only transmits torque, but also serves as a slideway for the axial movement of the roller body, so that the whole structure is greatly simplified; therefore, the manufacturing cost and the later maintenance cost are greatly reduced, and the operation reliability and the mechanical efficiency are improved.
The utility model provides an intelligent control winch formula long stroke does not have beam-pumping unit which characterized by: comprises a winch roller assembly, a roller body axial movement traction system, a numerical control and driving system, a frame assembly and an oil extraction wellhead system,
the rack assembly comprises a rack, a yielding roller box and a well repairing yielding longitudinal slideway, wherein the rack is of a frame structure, and the yielding roller box is arranged at the lower part of the rack; the yielding roller box is internally provided with rollers which carry the rack to move back and forth on the workover yielding longitudinal slideway; the workover yielding longitudinal slide ways are arranged on two sides of the oil production wellhead, are fixed with the foundation and are adjusted horizontally;
the winch roller assembly is arranged at the upper part of the rack and comprises a left bearing seat, a right bearing seat, a roller body, a left linear bearing, a right linear bearing and a transmission supporting square shaft; in the front view direction, the left bearing seat is arranged on the left side of the upper part of the rack, the right bearing seat is arranged on the right side of the upper part of the rack, and the transmission support square shaft is connected with the left bearing seat and the right bearing seat through cylindrical shaft ends on two sides; the roller body is arranged on the transmission support square shaft through a left linear bearing and a right linear bearing; a limit stop block is arranged on the transmission support square shaft;
the axial movement traction system of the roller body comprises a hollow traction nut and a hollow traction screw rod, and the hollow traction nut is arranged on the outer side of the roller body; the hollow traction screw rod is arranged on the left bearing seat;
the numerical control and driving system comprises a digital electric cabinet, a load sensor, a limit switch, a planetary reducer and a variable-frequency speed-regulating motor, wherein the planetary reducer is connected with a shaft end spline of the transmission support square shaft through a spline sleeve and is coaxial with the transmission support square shaft; the variable-frequency speed regulating motor is connected with the planetary reducer;
the oil extraction wellhead system comprises an oil pipe three-way blowout prevention box, a sleeve four-way oil pipe hanging seat, a rigid sucker rod hanger, a rigid sucker rod, a plunger, a pump barrel and a flexible polished rod, wherein one end of the flexible polished rod is fixed on the outer side of a rope containing groove of the roller body, the other end of the flexible polished rod penetrates through the oil pipe three-way blowout prevention box to be fixedly connected with the rigid sucker rod hanger after being wound along a centibas spiral groove in the rope containing groove; the rigid sucker rod hanger is connected with the rigid sucker rod, the end part of the rigid sucker rod is provided with a plunger, and the plunger reciprocates up and down in the pump cylinder; the oil pipe three-way blowout prevention box is fixedly connected to the upper part of the sleeve four-way oil pipe hanging seat.
The hollow traction nut is matched with the hollow traction screw rod and is of a 180-degree half-open structure.
And an electromagnetic brake and a rotating speed encoder are arranged in the variable-frequency speed regulating motor.
And the roller body is provided with a centi-Past spiral groove with the same diameter as the flexible polished rod.
Through the design scheme, the invention can bring the following beneficial effects: an intelligent control winch type long-stroke walking-beam-free pumping unit effectively prolongs the service life of a flexible polished rod, reduces transmission parts, directly takes power from a roller body, a hollow traction nut is directly arranged on the roller body, a roller shaft not only transmits torque, but also serves as a slideway for the axial movement of the roller body, and therefore the whole structure is greatly simplified; therefore, the manufacturing cost and the later maintenance cost are greatly reduced, and the operation reliability and the mechanical efficiency are improved.
Furthermore, the flexible polished rod is wound in a roller rope accommodating groove with a standard diameter, a centibas spiral groove matched with the diameter of the flexible polished rod is processed in the rope accommodating groove, the flexible polished rod and the groove cannot slide relatively and are directly inserted into a shaft, other stresses do not exist, and the service life of the flexible polished rod is greatly prolonged.
The hollow traction nut is directly installed on the roller body and rotates in the same speed and the same direction as the roller body, the axial moving force of the roller body is directly taken from the roller body, no intermediate transmission link exists, the structure is simple, the transmission efficiency is high, the manufacturing cost and the failure rate are low, and the later maintenance cost is low.
Drawings
The invention is further described with reference to the following figures and detailed description:
fig. 1 is a schematic structural diagram of an intelligent control winch type long-stroke non-beam pumping unit.
In the figure, 1-a digital electric cabinet, 2-a left load sensor, 3-a left bearing seat, 4-a hollow traction screw rod, 5-a hollow traction nut, 6-a left linear bearing, 7-a transmission support square shaft, 8-a right linear bearing, 9-a roller body, 10-a flexible polished rod, 11-a right bearing seat, 12-a planetary reducer, 13-a variable frequency speed regulating motor, 14-a right limit switch, 15-a rack, 16-an oil pipe three-way blowout prevention box, 17-a sleeve four-way oil pipe hanging seat, 18-a yielding roller box, 19-a well repairing yielding longitudinal slideway, 20-a rigid sucker rod hanger, 21-a rigid sucker rod, 22-a plunger, 23-a pump cylinder, 24-a right load sensor, 25-a left limit switch, 26-casing, 27-tubing.
Detailed Description
An intelligent control winch type long-stroke walking-beam-free pumping unit, as shown in figure 1, comprises a winch roller assembly, a roller body axial movement traction system, a numerical control and driving system, a frame assembly and an oil extraction wellhead system,
the rack assembly comprises a rack 15, a yielding roller box 18 and a well repairing yielding longitudinal slideway 19, wherein the rack 15 is of a frame structure, the lower part of the rack 15 is provided with the yielding roller box 18, and the yielding roller box 18 is matched with the well repairing yielding longitudinal slideway 19; the well repairing abdication longitudinal rail 19 is arranged on a cement foundation.
The winch roller assembly is arranged on an upper platform of the frame 15 and comprises a left bearing seat 3, a right bearing seat 11, a roller body 9, a left linear bearing 6, a right linear bearing 8 and a transmission supporting square shaft 7; in the front view direction, the left bearing seat 3 is arranged on the left side of the upper platform of the frame 15, the right bearing seat 11 is arranged on the right side of the upper platform of the frame 15, and the left bearing seat 3 and the right bearing seat 11 are sleeved on cylindrical shaft heads at two ends of the transmission supporting square shaft 7. The drum body 9 is sleeved on the transmission supporting square shaft 7 through the left linear bearing 6 and the right linear bearing 8, the moving plates of the left linear bearing 6 and the right linear bearing 8 are fixedly arranged on the drum body 9, the static plates are fixedly arranged on the transmission supporting square shaft 7, and gaps among the left linear bearing 6, the right linear bearing 8 and the transmission supporting square shaft 7 can be adjusted. Sealing elements are also arranged between the roller body 9 and the transmission supporting square shaft 7.
The supporting square shaft 7 can be replaced by a cylindrical supporting shaft, and the axial movement of the roller body and the transmission of torque are realized by a ball spline.
The roller body axial movement traction system comprises a hollow traction nut 5 and a hollow traction screw rod 4, wherein the hollow traction nut 5 is arranged on a roller body 9 and can rotate along with the roller body 9, the hollow traction screw rod 4 is arranged on the inner side surface of the left bearing block 3, the hollow traction nut 5 rotating along with the roller body 9 enables the hollow traction nut 5 and the roller body 9 to axially move on the transmission support square shaft 7 under the action of the hollow traction screw rod 4. The hollow traction nut 5 and the hollow traction screw rod 4 are both made into a 180-degree half-open structure, so that the disassembly, assembly, maintenance and replacement are convenient.
The numerical control and driving system comprises a digital electric cabinet 1, a left load sensor 2, a right load sensor 24, a right limit switch 14, a left limit switch 25, a planetary reducer 12 and a variable frequency speed regulation motor 13, wherein the planetary reducer 12 is connected with a shaft end spline of the transmission supporting square shaft 7 through a spline sleeve, is fixed on the outer side of the right bearing seat 11 through a connecting disc and is coaxial with the transmission supporting square shaft 7; the variable-frequency speed regulating motor 13 is connected with the planetary reducer 12; an electromagnetic brake and a rotating speed encoder are arranged in the variable-frequency speed regulating motor 13; the digital electric cabinet 1 is in signal connection with the left load sensor 2 and the right load sensor 24; the left load sensor 2 is arranged at the lower part of the left bearing seat 3; the right load sensor 24 is provided at a lower portion of the right bearing housing 11. The left limit switch 25 and the right limit switch 14 are installed on two sides of the rope accommodating groove of the roller body 9, and are specifically positioned at the limit positions of left and right movement of the roller body on the upper platform of the frame 15. The left limit switch 24 and the right limit switch 14 are in signal connection with the digital electric cabinet 1.
The oil extraction wellhead system comprises an oil pipe three-way blowout prevention box 16, a sleeve four-way oil pipe hanging seat 17, a rigid sucker rod hanger 20, a rigid sucker rod 21, a plunger 22, a pump cylinder 23, an oil pipe 27, a sleeve 26 and a flexible polished rod 10, wherein one end of the flexible polished rod 10 is fixed on the outer side of a groove edge on one side of a rope accommodating groove of the roller body 9. The flexible light rod 10 is wound in the rope accommodating groove along the rotating direction of the centibas spiral groove in the rope accommodating groove. The other end is called as a free end, the free end is fixedly connected with a rigid sucker rod hanger 20 after penetrating through an oil pipe three-way blowout prevention box 16, the rigid sucker rod hanger 20 is connected with a rigid sucker rod 10 male buckle, and then the oil pipe three-way blowout prevention box 16 is installed on a sleeve four-way oil pipe hanging seat 17.
The winch roller assembly is installed and fixed on an upper platform of the frame 15, the oil production wellhead system is positioned below the frame 15, and the free end of the flexible polished rod 10 output from the rope accommodating groove of the roller body 9 faces the center of an oil pipe three-way blowout prevention box 17 of the oil production wellhead system.
When the oil production well is repaired, the special tool is used for dragging the frame 15, and the workover operation can be normally carried out after the frame is retracted for 1.5 meters on the workover yielding longitudinal rail 19.
During the installation of the intelligent control winch type long-stroke beam-free pumping unit, a pump barrel 23 and an oil pumping pipe are firstly put into a well barrel, then a plunger 22 and a rigid sucker rod 21 are put into the well barrel, a coupling at the upper end of the rigid sucker rod 21 is fixed on a sleeve four-way oil pipe hanging seat 17 by using a cushion fork, then a flexible polished rod 10 penetrates through an oil pipe three-way blowout prevention box 16 from the free end, and the free end of the flexible polished rod 10 and a rigid sucker rod hanger 20 are cast by using low-melting-point alloy. Then starting the variable frequency speed regulating motor 13, lifting the flexible polished rod 10 to a certain position, and then installing and fixing the oil pipe three-way blowout preventer box 16 on the sleeve four-way oil pipe hanging seat 17. The machine can be normally started to produce after debugging and commissioning.
Claims (4)
1. The utility model provides an intelligent control winch formula long stroke does not have beam-pumping unit which characterized by: comprises a winch roller assembly, a roller body axial movement traction system, a numerical control and driving system, a frame assembly and an oil extraction wellhead system,
the frame assembly comprises a frame (15), a yielding roller box (18) and a well repairing yielding longitudinal slideway (19), the frame (15) is of a frame structure, and the yielding roller box (18) is arranged at the lower part of the frame (15); the yielding roller box (18) is internally provided with rollers and bears the rack (15) to move back and forth on the workover yielding longitudinal slideway (19); the well repairing yielding longitudinal slide ways (19) are arranged on two sides of the oil extraction well head, are fixed with the foundation and are adjusted horizontally;
the winch roller assembly is arranged on the upper part of the rack (15) and comprises a left bearing seat (3), a right bearing seat (11), a roller body (9), a left linear bearing (6), a right linear bearing (8) and a transmission supporting square shaft (7); in the front view direction, the left bearing seat (3) is arranged on the left side of the upper part of the rack (15), the right bearing seat (11) is arranged on the right side of the upper part of the rack (15), and the transmission support square shaft (7) is connected with the left bearing seat (3) and the right bearing seat (11) through cylindrical shaft ends on two sides; the roller body (9) is arranged on the transmission supporting square shaft (7) through a left linear bearing (6) and a right linear bearing (8); a limit stop block is arranged on the transmission support square shaft (7);
the axial movement traction system of the roller body comprises a hollow traction nut (5) and a hollow traction screw rod (4), wherein the hollow traction nut (5) is arranged on the outer side of the roller body (9); the hollow traction screw rod (4) is arranged on the left bearing seat (3);
the numerical control and driving system comprises a digital electric cabinet (1), a left load sensor (2), a right load sensor (24), a left limit switch (25), a right limit switch (14), a planetary reducer (12) and a variable-frequency speed regulation motor (13), wherein the planetary reducer (12) is in splined connection with the shaft end of the transmission supporting square shaft (7) through a spline sleeve and is coaxial with the transmission supporting square shaft (7); the variable-frequency speed regulating motor (13) is connected with the planetary reducer (12); the digital electric cabinet (1) is in signal connection with the left load sensor (2), the right load sensor (24), the left limit switch (25) and the right limit switch (14); the left load sensor (2) is arranged at the lower part of the left bearing seat (3); the right load sensor (24) is arranged at the lower part of the right bearing seat (11);
the oil extraction wellhead system comprises an oil pipe three-way blowout prevention box (16), a sleeve four-way oil pipe hanging seat (17), a rigid sucker rod hanger (20), a rigid sucker rod (21), a plunger (22), a pump cylinder (23) and a flexible polished rod (10), wherein one end of the flexible polished rod (10) is fixed on the outer side of a rope containing groove of a roller body (9), the other end of the flexible polished rod (10) penetrates through the oil pipe three-way blowout prevention box (16) to be fixedly connected with the rigid sucker rod hanger (20) after being wound along a centibas spiral groove in the rope containing groove; the rigid sucker rod hanger (20) is connected with the rigid sucker rod (21), the end part of the rigid sucker rod (21) is provided with a plunger (22), and the plunger (22) reciprocates up and down in a pump cylinder (23); the oil pipe three-way blowout prevention box (16) is fixedly connected to the upper part of the sleeve four-way oil pipe hanging seat (17).
2. The intelligent control winch type long-stroke walking-beam-free pumping unit as claimed in claim 1, wherein: the hollow traction nut (5) is matched with the hollow traction screw rod (4) and is of a 180-degree half-open structure.
3. The intelligent control winch type long-stroke walking-beam-free pumping unit as claimed in claim 1, wherein: and an electromagnetic brake and a rotating speed encoder are arranged in the variable-frequency speed regulating motor (13).
4. The intelligent control winch type long-stroke walking-beam-free pumping unit as claimed in claim 1, wherein: the roller body (9) is provided with a centi-Past spiral groove with the same diameter as the flexible polished rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110702521.1A CN113417604A (en) | 2021-06-24 | 2021-06-24 | Intelligent control winch type long-stroke non-beam pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110702521.1A CN113417604A (en) | 2021-06-24 | 2021-06-24 | Intelligent control winch type long-stroke non-beam pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113417604A true CN113417604A (en) | 2021-09-21 |
Family
ID=77717607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110702521.1A Pending CN113417604A (en) | 2021-06-24 | 2021-06-24 | Intelligent control winch type long-stroke non-beam pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113417604A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517662A (en) * | 2022-02-28 | 2022-05-20 | 吕学民 | Linkage mutual-balance vertical type super-long stroke oil production system and method |
-
2021
- 2021-06-24 CN CN202110702521.1A patent/CN113417604A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517662A (en) * | 2022-02-28 | 2022-05-20 | 吕学民 | Linkage mutual-balance vertical type super-long stroke oil production system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100564793C (en) | Oil pumping workover rig | |
| CN108326539B (en) | Screw drill auxiliary dismounting device for petroleum and natural gas exploitation | |
| CN102155191A (en) | Split twin-well pumping unit | |
| CN113417604A (en) | Intelligent control winch type long-stroke non-beam pumping unit | |
| CN201738884U (en) | Walking-beam type pumping unit for double-well | |
| CN217582094U (en) | Intelligent control winch type long-stroke non-beam pumping unit | |
| CN201031793Y (en) | Low type completely balancing long stroke beam-pumping unit | |
| CN204848068U (en) | Cylinder box integration oil winch for rigs in oilfield | |
| CN100390372C (en) | Underground reciprocating oil puming machine driven by rotary motor | |
| CN202810800U (en) | Direct-drive vertical type oil pumping machine with electrical switching machine and uninstall hanging linkage electrical machine | |
| CN105735890A (en) | Core drill | |
| CN216077065U (en) | Tower type intelligent control long-stroke non-beam pumping unit | |
| CN114517662B (en) | Linkage mutual balance vertical ultra-long stroke oil extraction system and method | |
| CN103291210A (en) | Gate-type double-tower gear-driven drilling machine | |
| CN215759644U (en) | Connecting assembly for mounting of constructional engineering | |
| CN114961596A (en) | Wellhead complete equipment of offshore oil drilling platform | |
| CN204591235U (en) | A kind of chain drive commutates short support times journey long stroke pumping unit | |
| CN214196271U (en) | Direct-drive oil pumping unit capable of improving mechanism efficiency | |
| CN202064904U (en) | Separate dual-well oil pumping machine | |
| CN201753598U (en) | Chain type twin-well energy-saving oil extractor | |
| CN115749639A (en) | Skid-mounted operation device for carbon fiber continuous sucker rod | |
| CN203359825U (en) | Hydraulic hoisting device for wellhead equipment | |
| CN1089139C (en) | Full-balanced long-stroke pumping unit with flexible drive parts | |
| CN215632801U (en) | Belt reciprocating type oil pumping and well repairing integrated machine | |
| CN102041978B (en) | Rod hiding type oil pumping unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230118 Address after: 138000 Yada industrial concentration area, Ning Jiang District, Songyuan, Jilin Applicant after: SONGYUAN CITY FORWARD PETROLEUM ENGINEERING MACHINERY Co.,Ltd. Address before: 138000 Room 102, building 2, Jinjiang Community Bureau, Fanrong street, Ningjiang district, Songyuan City, Jilin Province Applicant before: Hu Yong |
|
| TA01 | Transfer of patent application right |