CN202228051U - Communication-type load-reducing device suitable for heavy oil production by mixing thin oil - Google Patents
Communication-type load-reducing device suitable for heavy oil production by mixing thin oil Download PDFInfo
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- CN202228051U CN202228051U CN2011203823430U CN201120382343U CN202228051U CN 202228051 U CN202228051 U CN 202228051U CN 2011203823430 U CN2011203823430 U CN 2011203823430U CN 201120382343 U CN201120382343 U CN 201120382343U CN 202228051 U CN202228051 U CN 202228051U
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Abstract
The utility model relates to a communication-type load-reducing device suitable for heavy oil production by mixing thin oil and belongs to underground load-reducing equipment in oil-field heavy oil production. The device mainly comprises a sucker rod, an upper liquid through hole, a plunger pipe, an upper seal pipe, a load-reducing device nipple, a lower seal pipe, a load-reducing piston and a lower liquid through hole. The load-reducing device nipple comprises an upper adapter, a joint, a protrusion platform, a respiratory tubing string, a nut, a gasket, a double-ended stud, a washer and a lower adapter, wherein the upper adapter of the load-reducing device nipple is connected with the upper seal pipe, the lower adapter is connected with the lower seal pipe, the protrusion platform is arranged in the middle of the load-reducing device nipple, a passage is formed inside the protrusion platform, and the protrusion platform is connected with the respiratory tubing string through the joint. The device is suitable for meeting the requirements for different production processes of ultra-deep ultra-heavy oil reservoirs, and is particularly suitable for the process of heavy oil production by mixing thin oil. The load-reducing device nipple and the load-reducing device body can be connected directly. The communication-type load-reducing device has a simple structure, is convenient in installation and low in cost.
Description
Technical field
The utility model relates to a kind of viscous crude that is applicable to and mixes the communication type load reducer of rare exploitation, belongs to the down-hole off-load equipment of oil-field thick-oil exploitation.
Background technology
Along with the prolongation of oil exploitation time and the increase of recovery percent of reserves, petroleum resources are day by day exhausted, and the exploitation direction is low to deeply buried reservoir, energy gradually, the oil reservoir of poor permeability, flood effectiveness difference shifts.The technical difficulty of oil exploitation also constantly increases, and in order to realize dark extract, just must deepen pump and hang, and pump setting depth increases, and will cause the oil pumper polished rod load to increase.Under present pump setting depth, it is maximum that pump load reaches basically.Increasing pump setting depth just needs to change the oil pumper of bigger model, and this brings energy consumption to increase adverse consequences such as cost rising again.Want under the situation that does not change ground installation, deepen pump and hang, increase oil production, just must use downhole tool, to alleviate the oil pumper polished rod load with Load Alleviation Function.
Simultaneously, ultra dark ultra thick oil reservoir has multiple production practice at present, as mixes rare viscosity reduction technology, electrical heating bar technology etc., and wherein, mixing rare viscosity reduction production practice is main production practice, and some present off-load methods should not be used in mixing wide-spaced well.
Summary of the invention
The purpose of the utility model is; In order to overcome the deficiency of prior art; The spy provides a kind of viscous crude that is applicable to mix the communication type load reducer of rare exploitation; Be applicable to that to satisfy oil pumper off-load equipment ultra-deep ultra-thick oil hides the demand of multiple production practice, particularly mix in rare exploitation and also can use off-load equipment, to alleviate the pumping unit horsehead polished rod load at viscous crude.
The technical scheme that the utility model adopts is:
A kind of viscous crude that is applicable to of the utility model is mixed the communication type load reducer of rare exploitation, mainly is made up of sucker rod, last liquid pass hole, plunger tube, last sealed tube, load reducer short circuit, lower seal pipe, lightening piston, following liquid pass hole.Said load reducer short circuit is made up of top connection, joint, convex, breathing tubing string, nut, pad, studs, packing ring, lower contact; Said load reducer short circuit top connection connects goes up sealed tube, and lower contact connects the lower seal pipe; Load reducer short circuit middle part is provided with convex, and passage is arranged in the convex, and convex is connected with the breathing tubing string through joint; Joint is fixed on the convex with studs, joint with breathe tubing string by being threaded, breathe tubing string and be connected to well head; Be designed with one section bend pipe at the breathing tubing string near junction; In tubing coupling place, adopt the circular steel ring of two halves will breathe tubing string and fix.
The utility model compared with prior art has following beneficial effect: 1, the utility model is applicable to that ultra-deep ultra-thick oil hides the demand of multiple production practice, is specially adapted to viscous crude and mixes rare production practice; 2, the load reducer short circuit can directly link to each other with the load reducer body, and simple in structure, easy for installation, cost is lower.
Description of drawings
Fig. 1 mixes the structural representation of the communication type load reducer of rare exploitation for a kind of viscous crude that is applicable to of the utility model.
Fig. 2 is the load reducer short circuit structural representation of the utility model.
Fig. 3 is the load reducer short circuit lateral view of the utility model.
Fig. 4 is the joint design sketch map of the utility model.
Among the figure, 1. sucker rod, 2. go up liquid pass hole, 3. plunger tube, 4. go up sealed tube, 5. breathe tubing string, 6. the load reducer short circuit, 7. the lower seal pipe, 8. lightening piston, 9. descend liquid pass hole, 10. top connection, 11. joints, 12. convexes, 13. nuts, 14. pads, 15. studs, 16. packing rings, 17. lower contacts.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Like Fig. 1; Fig. 2; Fig. 3, shown in Figure 4, a kind of viscous crude that is applicable to of the utility model is mixed the communication type load reducer of rare exploitation; Mainly form by sucker rod 1, last liquid pass hole 2, plunger tube 3, last sealed tube 4, load reducer short circuit 6, lower seal pipe 7, lightening piston 8, following liquid pass hole 9; Said load reducer short circuit 6 is made up of breathing tubing string 5, top connection 10, joint 11, convex 12, nut 13, pad 14, studs 15, packing ring 16, lower contact 17, and the top connection 10 of said load reducer short circuit 6 connects goes up sealed tube 4, and lower contact 17 connects lower seal pipes 7; Load reducer short circuit 6 middle parts are provided with convex 12; In the convex 12 passage is arranged, convex 12 is connected with breathing tubing string 5 through joint 11, and joint 11 usefulness studs 15 are fixed on the convex 12; Joint 11 is threaded with breathing to adopt between the tubing string 5; Breathe tubing string 5 also through being threaded io well head, guarantee load reducer spiracle and atmosphere, also avoided when mixing rare productions thin oil simultaneously through spiracle entering lightening piston 8 upper surfaces.
Be designed with one section bend pipe at breathing tubing string 5 near 11 sections of joints, avoid breathing tubing string 5 and interfere with tubing coupling place.
In tubing coupling place, it is fixing to adopt the circular steel ring of two halves will breathe tubing string 5, and breathing tubing string 5 rocks with sleeve pipe and bumps when avoiding load reducer to go into well.
Atmosphere gets into lightening piston 8 tops through breathing tubing string 5 by spiracle, i.e. the lightening piston 8 upper surfaces effect of receiving atmospheric pressure, and lightening piston 8 lower surfaces contact with liquid in the oil pipe, and its pressure is identical at the pressure of this end with the pit shaft fluid column.Therefore the upper and lower end face of lightening piston 8 is in respectively in the atmosphere pressure system different with oil pipe; The pressure that is lightening piston 8 upper and lower end face places has a difference; By thrust that this pressure differential produced lower surface at lightening piston 8; Make it produce a lifting force that makes progress, realize that finally the oil pumper load reducer alleviates the function of pumping unit horsehead polished rod load.
Claims (2)
1. one kind is applicable to that viscous crude mixes the communication type load reducer of rare exploitation; Mainly form by sucker rod (1), last liquid pass hole (2), plunger tube (3), last sealed tube (4), load reducer short circuit (6), lower seal pipe (7), lightening piston (8), following liquid pass hole (9); It is characterized in that; Said load reducer short circuit (6) is made up of top connection (10), joint (11), convex (12), breathing tubing string (5), nut (13), pad (14), studs (15), packing ring (16), lower contact (17); Sealed tube (4) in said load reducer short circuit (6) top connection (10) connection, lower contact (17) connects lower seal pipe (7); Load reducer short circuit (6) middle part is provided with convex (12), and convex has passage in (12), and convex (12) is connected with breathing tubing string (5) through joint (11); Joint (11) is fixed on the convex (12) with studs (15); Joint (11) with breathe tubing string (5) by being threaded; Breathe tubing string (5) also by being threaded io well head, in tubing coupling place, it is fixing to adopt the circular steel ring of two halves will breathe tubing string (5).
2. a kind of viscous crude that is applicable to according to claim 1 is mixed the communication type load reducer of rare exploitation, it is characterized in that, is designed with one section bend pipe at breathing tubing string 5 near 11 sections of joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203823430U CN202228051U (en) | 2011-10-10 | 2011-10-10 | Communication-type load-reducing device suitable for heavy oil production by mixing thin oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203823430U CN202228051U (en) | 2011-10-10 | 2011-10-10 | Communication-type load-reducing device suitable for heavy oil production by mixing thin oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228051U true CN202228051U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203823430U Expired - Fee Related CN202228051U (en) | 2011-10-10 | 2011-10-10 | Communication-type load-reducing device suitable for heavy oil production by mixing thin oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725345A (en) * | 2016-08-11 | 2018-02-23 | 中国石油天然气股份有限公司 | Load-relieving structure and there is its oil pumper |
-
2011
- 2011-10-10 CN CN2011203823430U patent/CN202228051U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725345A (en) * | 2016-08-11 | 2018-02-23 | 中国石油天然气股份有限公司 | Load-relieving structure and there is its oil pumper |
| CN107725345B (en) * | 2016-08-11 | 2019-08-02 | 中国石油天然气股份有限公司 | Load-relieving structure and pumping unit with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20121010 |