CN201705231U - Deep sucker rod load reducing device - Google Patents
Deep sucker rod load reducing device Download PDFInfo
- Publication number
- CN201705231U CN201705231U CN2009202782120U CN200920278212U CN201705231U CN 201705231 U CN201705231 U CN 201705231U CN 2009202782120 U CN2009202782120 U CN 2009202782120U CN 200920278212 U CN200920278212 U CN 200920278212U CN 201705231 U CN201705231 U CN 201705231U
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- CN
- China
- Prior art keywords
- oil
- sucker rod
- plunger
- connector
- joint
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a down-hole tool for an oilfield or an oil well, in particular to a deep sucker rod load reducing device which comprises a release connector, an oil pipe coupling, a release pipe, a tripping device, an oil outlet connector, a striking-off cup, a Phi95 short pump cylinder, a Phi95 long plunger, a connector, a breathing hole, a Phi127 pump cylinder, a Phi127 plunger, a sealing ring, an oil inlet connector and a bearing connector; and because double oil pumps and a sucker rod, a Phi95 plunger and the Phi127 plunger are connected together, the device has replicating motion with the sucker rod. The upper part and the lower part of the upper end surface of the Phi127 plunger are respectively arranged two different pressure systems, the pressure produced by pressure difference acts on the upper end surface of the Phi127 plunger so as to produce upward lifting force, help an oil sucking machine to drive the sucker rod and the whole set of rod and cylinder to move upwards and reduce the hanging point load of the oil sucking machine. The deep sucker rod load reducing device has simple structure, is convenient to use, and is very suitable to be popularized and applied on site.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for using on the oilfield, particularly deep layer sucker rod load-shedding equipment.
Background technology:
Along with oil reservoir buries more and more darker, when thick oil horizontal well enters deep layer (about 1500) mining phase, owing to be subjected to the limitation of oil pumper rated load and sucker rod deadweight, the following pump degree of depth is severely limited, calculate by theory load, when selecting 20 type oil pumpers for use, during parameters such as φ 25 high-strength pumping rods, the pump degree of depth only is 1300m under the maximum of the big discharge capacity oil well pump of φ 120 high temperature, can't satisfy the dark requirement of pump of deep layer oil well lifting about 1500, thereby the deep layer oil mining is had a strong impact on, seriously hindered oil well and entered deep layer (about 1500) mining phase.
Summary of the invention:
The purpose of this utility model is to provide deep layer sucker rod load-shedding equipment, it can be implemented in the booster action of deep layer load-shedding equipment, and the polished rod load of pumping unit horsehead is reduced greatly, thereby the telescopic resilience of sucker rod is diminished, reduce the flexible influence of roofbolt, effectively improve pump efficiency oil well pump.Reach the requirement of deep layer Lifting Technique, for the deep-layer heavy crude exploitation provides the reliable technique support.
The utility model is by releasing-joint, tubing coupling, releasing tube, on-off connector, delivery connection, the cup of strike-ofing, φ 95 short pump barrels, φ 95 long-plungers, joint, spiracle, φ 127 pump barrels, φ 127 plungers, joint ring, fuel inlet fitting, the carrying joint is formed, releasing-joint is by tubing coupling and releasing tube, joint, φ 127 pump barrels, the carrying joint connects, on-off connector and delivery connection are arranged in it, the cup of strike-ofing, φ 95 long-plungers, φ 127 plungers, joint ring connects, φ 95 long-plungers are with φ 95 short pump barrels outward, spiracle is arranged on the joint, in the carrying joint fuel inlet fitting is arranged.
This load-shedding equipment mainly is made up of " φ 95 long-plunger short pump barrel oil well pumps " and " φ 127 oil well pumps ", and in the course of work, sucker rod connects on-off connector, and drive φ 95 plungers, φ b 127 plungers move reciprocatingly.The top of φ 127 plunger upper surfaces, other places, lower part are in two different pressure systems, the pressure that pressure differential produced acts on the upper surface of φ 127 plungers, thereby produce a lifting force that makes progress, auxiliary oil pumper drives sucker rod and a whole set of roofbolt moves upward, and alleviates the polished rod load of oil pumper.
The utility model is owing to adopted the black soy sauce oil pump to form: mainly be made up of " φ 95 long-plunger short pump barrel oil well pumps " and " 127 oil well pump ", sucker rod, φ 95 plungers, φ 127 plungers link together, and move reciprocatingly with sucker rod.The top of φ 127 plunger upper surfaces, other places, lower part are in two different pressure systems, the pressure that pressure differential produced acts on the upper surface of φ 127 plungers, thereby produce the power of lifting that makes progress, auxiliary oil pumper drives sucker rod and a whole set of roofbolt moves upward, and alleviates the polished rod load of oil pumper.It is simple in structure, and is easy to use, is well suited for field popularization application.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
As shown in the figure, the utility model is by releasing-joint 1, tubing coupling 2, releasing tube 3, on-off connector 4, delivery connection 5, strike-off the cup 6, φ 95 short pump barrels 7, φ 95 long-plungers 8, joint 9, spiracle 10, φ 127 pump barrels 11, φ 127 plungers 12, joint ring 13, fuel inlet fitting 14, carrying joint 15 is formed, releasing-joint 1 is by tubing coupling 2 and releasing tube 3, joint 9, φ 127 pump barrels 11, carrying joint 15 connects, on-off connector 4 and delivery connection 5 are arranged in it, strike-off the cup 6, φ 95 long-plungers 8, φ 127 plungers 12, joint ring 13 connects, φ 95 long-plungers 8 outer φ 95 short pump barrels 7 that are with, spiracle 10 is arranged on the joint 9, in the carrying joint 15 fuel inlet fitting 14 is arranged.
During work, (1) trips out flow string in the well, and following drift size gauge tool drifting to pump deep-seated is put, thoroughly well-flushing.
(2) with after putting in place under the oil pipe below the deep layer SAGD load-shedding equipment, the sucker rod, visit the pump examination and take out, confirm that piston has been gone into pump barrel after, the tubing string pressure testing, after pressure testing is qualified, on carry dead space, the upper end of sucker rod is as the criterion with the oil pipe upper end is fair.
(3) load reducer of slinging is aimed at well head, earlier the rod connector of load-shedding equipment bottom is connected with rod string in the well and tightens screw thread, carries on then, remove rod elevator, transfer again, the pump lower contact and the bottom oil pipe of load-shedding equipment connected screw thread, again load reducer is gone into well.
(4) descended the top tubing string in the usual way, after pressure testing is qualified, be lowered to the top rod string that connects the on-off connector top connection, after sucker rod had descended, whether the checking on-off connector to connecting, and confirms on-off connector to after connecting and trying Extract, on carry dead space.
(1) the black soy sauce oil pump is formed: deep layer SAGD load-shedding equipment mainly is made up of " φ 95 long-plunger short pump barrel oil well pumps " and " φ 127 oil well pumps ", and in the course of work, sucker rod, φ 95 plungers, φ 127 plungers link together, and move reciprocatingly with sucker rod.The top of φ 127 plunger upper surfaces, other places, lower part are in two different pressure systems, the pressure that pressure differential produced acts on the upper surface of φ 127 plungers, thereby produce the power of lifting that makes progress, auxiliary oil pumper drives sucker rod and a whole set of roofbolt moves upward, and alleviates the polished rod load of oil pumper.
(2) pressure transmission design: the box cupling Position Design of " φ 95 long-plunger short pump barrel oil well pumps " and " φ 127 oil well pumps " spiracle, communicate with the oil jacket annular space, therefore, it is identical with the oil jacket annular pressure that this locates pressure.By the pressure transmission design, can effectively produce pressure differential, thereby realize the oil pumper off-load.
(3) the down stroke resistance alleviates: the SAGD exploitation belongs to viscous crude, super heavy oil recovery scope, well fluid viscosity height, when using deep layer SAGD off-load technology, relief force exists in whole stroke range all the time, therefore, oil pumper is entering down stroke during the stage, because the well fluid viscosity is higher, certainly will bring problems such as oil pumper down stroke difficulty.The operate as normal of oil pumper will be had a strong impact on.At this problem, on the basis of reference GB/T18607-2008 " oil well pump and component specifications " national standard, calculate by theory, increase plunger and pump barrel inwall gap, guarantee that the oil pumper down stroke is unblocked.
(4) sealing performance design: deep layer SAGD load-shedding equipment is made up of upper and lower black soy sauce oil pump, because subsurface environment complexity, when working long hours, shaked out, wax deposition, high factor affecting such as moisture, the wastage of load-shedding equipment is increased gradually, thereby reduce off-load load gradually, increase the oil pumper polished rod load.Therefore, for reducing leakage, design seal ring structure on φ 127 oil pump plunger pistons, the sealing ring is 45# steel matter, and adopts spray welding process, can effectively reduce the gap leaking loss amount, guarantees the oil pumper operate as normal.
Claims (1)
1. deep layer sucker rod load-shedding equipment, by releasing-joint (1), tubing coupling (2), releasing tube (3), on-off connector (4), delivery connection (5), strike-off glass (6), φ 95 short pump barrels (7), φ 95 long-plungers (8), joint (9), spiracle (10), φ 127 pump barrels (11), φ 127 plungers (12), joint ring (13), fuel inlet fitting (14), carrying joint (15) is formed, it is characterized in that: releasing-joint (1) is by tubing coupling (2) and releasing tube (3), joint (9), φ 127 pump barrels (11), carrying joint (15) connects, on-off connector (4) and delivery connection (5) are arranged in it, strike-off glass (6), φ 95 long-plungers (8), φ 127 plungers (12), joint ring (13) connects, outer φ 95 short pump barrels (7) that are with of φ 95 long-plungers (8), spiracle (10) is arranged on the joint (9), in the carrying joint (15) fuel inlet fitting (14) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202782120U CN201705231U (en) | 2009-12-16 | 2009-12-16 | Deep sucker rod load reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202782120U CN201705231U (en) | 2009-12-16 | 2009-12-16 | Deep sucker rod load reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705231U true CN201705231U (en) | 2011-01-12 |
Family
ID=43442386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202782120U Expired - Lifetime CN201705231U (en) | 2009-12-16 | 2009-12-16 | Deep sucker rod load reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016009302A2 (en) | 2014-07-15 | 2016-01-21 | Yorio Pablo Martín | Load reduction device for deep well pumping systems and pumping system comprising said device |
-
2009
- 2009-12-16 CN CN2009202782120U patent/CN201705231U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016009302A2 (en) | 2014-07-15 | 2016-01-21 | Yorio Pablo Martín | Load reduction device for deep well pumping systems and pumping system comprising said device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |
|
| CX01 | Expiry of patent term |