CN202108470U - Constant pressure circulating valve - Google Patents
Constant pressure circulating valve Download PDFInfo
- Publication number
- CN202108470U CN202108470U CN2011201781359U CN201120178135U CN202108470U CN 202108470 U CN202108470 U CN 202108470U CN 2011201781359 U CN2011201781359 U CN 2011201781359U CN 201120178135 U CN201120178135 U CN 201120178135U CN 202108470 U CN202108470 U CN 202108470U
- Authority
- CN
- China
- Prior art keywords
- pressure
- joint
- upper joint
- pin
- pressure relief
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005429 filling process Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a constant pressure circulating valve, which comprises an upper joint, a pressure relief pin, a pressure relief sliding sleeve and a lower joint; wherein the upper joint and the lower joint are connected through a flat thread; the pressure relief sliding sleeve is fixed on the upper connector through the pressure relief pin; and the upper joint and the lower joint are connected with an external central pipe through oil pipe threads. The utility model discloses level pressure circulating valve can effectually solve because the jam and lead to filling up the sand effect not good, the condition of failure even. The application of a plurality of circulating valves with different pressure values can realize gradual and gradual sand filling, improve the sand filling rate, better prevent and control sand production of an oil well and lay a solid foundation for stable yield and high yield of the oil well.
Description
Technical Field
The utility model relates to an oil well oil recovery technical field especially relates to a constant pressure circulating valve that horizontal well gravel packing was used.
Background
The gravel packing sand control technology is the most effective way for controlling fine silt, is mature in the prior art and is less applied in the horizontal well. Utility model people are realizing the utility model discloses an in-process discovery current gravel pack sand control technique exists at least not enough as follows: due to the fact that the well body structure of the horizontal well is complex, sand blocking is easy to occur in the gravel filling process, the filling of the front section is stopped midway, the construction success rate is low, and the filling effect is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that the sand blockage and the filling stop midway are easily caused in the sand filling construction process by the prior gravel filling sand prevention technology.
In order to achieve the above object, the embodiment of the utility model provides a gravel packing's supporting instrument constant pressure circulating valve is in the sand filling work progress, opens when pressure reaches a definite value, changes circulation passage, guarantees going on in succession of sand filling process.
The embodiment of the utility model provides a constant pressure circulating valve, which comprises an upper joint 1, a pressure relief pin 2, a pressure relief sliding sleeve 3 and a lower joint 4; wherein the upper joint 1 and the lower joint 4 are connected through flat buckle threads; the pressure relief sliding sleeve 3 is fixed on the upper joint 1 through the pressure relief pin 2; and the upper joint 1 and the lower joint 4 are connected with an external central pipe through oil pipe threads.
The upper joint 1 is provided with two uniformly distributed joint pin holes 10, 8 uniformly distributed pressure relief pin holes 11 and two uniformly distributed pressure relief holes 12;
the pressure relief pin 2 fixes the pressure relief sliding sleeve 3 on the upper joint 1 through the pressure relief pin hole 11;
the upper joint 1 and the lower joint 4 are connected and fixed through the joint pin hole 10 and a fixing pin;
after the upper joint 1 and the lower joint 4 are fixed, sealing is realized through a sealing rubber ring;
the upper joint 1 and the pressure relief sliding sleeve 3 are fixed and sealed through a sealing rubber ring.
When gravel pack construction, will the utility model discloses a circulation valve is connected and is gone into the well from top to bottom in the center tube. In the construction process, when the sand filling pressure reaches a certain value, the circulating valve is opened, the circulating channel is changed, and the continuous sand filling process is ensured. Meanwhile, according to the requirement, a plurality of circulating valves with different pressure values can be designed for the horizontal well with long well section and large sand filling amount, so that the step-by-step sand filling is realized, the filling rate is improved, and the sand prevention effect is ensured.
The utility model discloses level pressure circulating valve can effectually solve because the jam and lead to filling up the sand effect not good, the condition of failure even. The application of a plurality of circulating valves with different pressure values can realize gradual and gradual sand filling, improve the sand filling rate, better prevent and control sand production of an oil well and lay a solid foundation for stable yield and high yield of the oil well.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a constant pressure circulation valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an upper joint according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a constant pressure circulating valve, as shown in figure 1, this constant pressure circulating valve includes top connection 1, pressure release pin 2, pressure release sliding sleeve 3, lower clutch 4. Wherein, the upper joint 1 and the lower joint 4 are both provided with oil pipe threads and can be connected with external components; and the upper joint 1 and the lower joint 4 are connected through flat thread, fixed by a fixing pin and sealed by a sealing rubber ring.
In this embodiment, the pressure-releasing sliding sleeve 3 is fixed on the upper joint 1 by a pressure-releasing pin 2. As shown in fig. 2, which is a schematic structural diagram of the upper joint 1 of the present embodiment, as shown in the figure, the upper joint 1 of the constant pressure circulation valve has two uniformly distributed joint pin holes 10, 8 uniformly distributed pressure relief pin holes 11, and two uniformly distributed pressure relief holes 12. The pressure relief pin 2 fixes the pressure relief sliding sleeve 3 on the upper joint 1 through 8 pressure relief pin holes 11. The upper joint 1 and the lower joint 4 are also connected by a fixing pin through two joint pin holes 10. Through the pin fixing and the pressure relief hole, the function of connecting and providing a pressure relief channel can be achieved.
When the constant pressure circulating valve of this embodiment is in use, along with the internal pressure of pit shaft increases gradually, pressure passes through the pressure release hole 12 of constant pressure circulating valve top connection 1 and acts on pressure release sliding sleeve 3, and when pressure exceeded the shear stress of pressure release pin 2, pressure release sliding sleeve 3 was cut pressure release pin 2 and is shifted up, and the inside and outside intercommunication of constant pressure circulating valve is established, and liquid gets into the constant pressure circulating valve through pressure release hole 12 in, returns out through the flushing pipe. Wherein, lower clutch 4 is connected with top connection 1, can block that 3 pins of pressure release sliding sleeve drop after shearing. Moreover, according to construction needs, the pressure value can be determined by changing the size of the pin.
Preferably, the constant pressure circulating valves with different pressure values can be arranged, and in use, the constant pressure circulating valves are opened one by one in a first-level mode, so that the situation that after sand blocking, the pressure is increased too fast and the pressure is greater than the fracture pressure of an oil layer to cause the fracturing of the oil layer is avoided, and the gravel filling of the horizontal well cannot be normally carried out.
When the gravel packing construction, will the utility model discloses constant pressure circulating valve connects about the center tube in going into the well. In the construction process, when the sand filling pressure reaches a certain value, the constant pressure circulating valve is opened, a circulating channel is changed, and the continuous sand filling process is ensured. Meanwhile, according to the requirement, a plurality of circulating valves with different pressure values can be designed for the horizontal well with long well section and large sand filling amount, so that the step-by-step sand filling is realized, the filling rate is improved, and the sand prevention effect is ensured.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The constant-pressure circulating valve is characterized by comprising an upper joint (1), a pressure relief pin (2), a pressure relief sliding sleeve (3) and a lower joint (4); wherein,
the upper joint (1) is connected with the lower joint (4) through flat buckle threads;
the pressure relief sliding sleeve (3) is fixed on the upper joint (1) through the pressure relief pin (2); and is
The upper joint (1) and the lower joint (4) are connected with an external central pipe through oil pipe threads.
2. The constant-pressure circulation valve according to claim 1, wherein the upper joint (1) has two evenly distributed joint pin holes (10), 8 evenly distributed relief pin holes (11), and two evenly distributed relief holes (12).
3. The constant-pressure circulation valve according to claim 2, wherein the pressure-relief pin (2) fixes the pressure-relief sliding sleeve (3) to the upper joint (1) through the pressure-relief pin hole (11).
4. The constant-pressure circulation valve according to claim 2, wherein the upper joint (1) and the lower joint (4) are fixedly connected by the joint pin hole (10) and a fixing pin.
5. The constant-pressure circulation valve according to claim 4, wherein the upper joint (1) and the lower joint (4) are sealed by a sealing rubber ring after being fixed.
6. The constant-pressure circulation valve according to claim 3, wherein the upper joint (1) and the pressure-relief sliding sleeve (3) are sealed by a sealing rubber ring after being fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201781359U CN202108470U (en) | 2011-05-30 | 2011-05-30 | Constant pressure circulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201781359U CN202108470U (en) | 2011-05-30 | 2011-05-30 | Constant pressure circulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108470U true CN202108470U (en) | 2012-01-11 |
Family
ID=45433906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201781359U Expired - Lifetime CN202108470U (en) | 2011-05-30 | 2011-05-30 | Constant pressure circulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
-
2011
- 2011-05-30 CN CN2011201781359U patent/CN202108470U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |