CN203594421U - Constant flow device for evening injection/oil extraction cross section of horizontal well - Google Patents
Constant flow device for evening injection/oil extraction cross section of horizontal well Download PDFInfo
- Publication number
- CN203594421U CN203594421U CN201320763387.7U CN201320763387U CN203594421U CN 203594421 U CN203594421 U CN 203594421U CN 201320763387 U CN201320763387 U CN 201320763387U CN 203594421 U CN203594421 U CN 203594421U
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- Prior art keywords
- valve seat
- horizontal well
- flow valve
- constant flow
- valve
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- 238000002347 injection Methods 0.000 title abstract description 12
- 239000007924 injection Substances 0.000 title abstract description 12
- 238000000605 extraction Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims description 19
- 210000002445 nipple Anatomy 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a constant flow device for evening an injection/oil extraction cross section of a horizontal well. The constant flow device solves the problem that the cross section of an oil extraction/injection shaft of the horizontal well is not even. The two ends of a working cylinder (2) are an upper joint (1) and a lower joint (8) respectively, and the outer cylinder face of the working cylinder (2) is provided with radial through holes (9) which are distributed in the circumferential direction. The cylinder face of a valve seat (10) is matched with the through holes (9), and an inner cavity of the valve seat (10) is matched with the cylinder face of a constant flow valve (4), wherein the matched face is provided with a sealing ring (16). An axial hole (11) is formed in the valve seat (10) and communicated with the inner cavity of the working cylinder (2), and the constant flow valve (4) is provided with a specially-shaped nozzle (6) which is movably matched with a plunger (5). One end of the specially-shaped nozzle (6) is connected with a sleeve (12), and the other end of the specially-shaped nozzle (6) is located in the axial gap between the sleeve (12) and the plunger (5), connected with a spring (14) and provided with a liquid outlet (15) which is communicated with the hole (11) in the valve seat (10). One end of the constant flow valve (4) is matched with the large end of the valve seat (10), and the other end of the constant flow valve (4) is an outlet of the specially-shaped nozzle (6). The through holes (9) and the constant flow valve (4) are sealed through pressing nuts (7).
Description
technical field:
The utility model is relevant with the exploitation of oil field long well section horizontal oil or the stable-pressure device of injection oil pipe.
background technology:
According to document, near flow horizontal well root is far away higher than the flow of toe, this is because horizontal well has occurred pressure drop along pit shaft, due to the generation of above phenomenon, in oil recovery process, horizontal well along the uneven distribution of pit shaft flow cause in displacement process water/gas bore into or ridge enter, make water/gas early breakthrough, have a strong impact on crude oil yield.For Injection Well or acidifying well, cause sweep efficiency oil reservoir area low and that do not feed through to large along the injection rate section inequality of horizontal wellbore, have a strong impact on flood effectiveness and acidizing effect.
In order to realize horizontal well, inject/oil recovery section is even, in oil recovery process, avoid aqueous vapor early breakthrough, in injection process, improve sweep efficiency, in recent years, study and deliver the elimination of level well inhomogeneous several different methods of pit shaft section of recovering the oil/inject, wherein representative be Brekke and Lien propose change the position of horizontal well root to middle part maximum pressure drop with Inserting Tube.
Another kind is that Hansen and Nederveen have described by the liner-type well completion of pipe covering and the technology of volume increase, by the eyelet of pre-subdrilling some on bushing pipe, by the quantity of restriction eyelet, obtain choked flow effect, uneven distribution along eyelet on the bushing pipe of horizontal well pit shaft has compensated the pressure drop along bushing pipe, and uniform flow profile is provided.
In actual production process, above two kinds of tubular column structures, although can play a role,, because the inhomogeneity of oil reservoir is complicated especially, fluid is along certain difficulty that defines of the distribution characteristics of pit shaft, therefore practical operation has certain difficulty.
utility model content:
It is even that the purpose of this utility model is to provide inject/oil recovery of a kind of horizontal well section, in oil recovery process, avoids aqueous vapor early breakthrough, improves sweep efficiency in injection process, the galvanostat of inject/oil recovery of even horizontal well section simple to operate.
The utility model is like this:
The evenly galvanostat of inject/oil recovery of horizontal well section, the two ends of seating nipple 2 are respectively top connection 1, lower contact 8, the outer cylinder of seating nipple 2 has the radial direction through hole 9 of circumferential distribution, the cylinder of valve seat 10 coordinates with through hole 9, the inner chamber of valve seat 10 coordinates with the cylinder of permanent flow valve 4, fitting face has sealing ring 16, valve seat 10 has the inner chamber of axial hole 11 logical seating nipples 2, permanent flow valve 4 has sleeve pipe 12 to coordinate with plunger 5 is moving, one end of heterotypic spray nozzle 6 is connected with seating nipple 2, the other end is positioned at sleeve pipe 12 and is connected with spring 14 with the end play of plunger 5, this end has liquid outlet 15 to communicate with the hole 13 on sleeve pipe 12, one end of permanent flow valve 4 coordinates with the large end of plunger 5, the other end is that heterotypic spray nozzle 6 exports, through hole 9 and permanent flow valve 4 are sealed by pressure cap 7.
According to needs of production, 180 degree change the direction of permanent flow valve 4.
Seating nipple is by top connection 1, and lower contact 8 is connected with oil pipe.
Some seating nipples 2 are connected on horizontal oil pipe.
The utility model is connected on the horizontal segment of horizontal well, and the number of galvanostat and discharge capacity are determined by length and the horizontal well capacity of net horizontal section.The permanent flow valve of different flow is arranged in outer working tube, determines the installation direction of permanent flow valve according to feed liquor/fluid direction.
The utility model is suitable for the exploitation of oil field long well section horizontal oil or injects construction, reduce horizontal well along pit shaft pressure drop and the impact on flow thereof, inject/oil recovery section is even to realize horizontal well, in oil recovery process, avoid aqueous vapor early breakthrough, in injection process, improve sweep efficiency, solve the inhomogeneous problem of injection/oil recovery section.
The utility model compared with prior art has following significant advantage:
1, the galvanostat of the utility model development, is made up of two parts in structure, and a part is galvanostat outer working tube, and another part is permanent flow valve, and permanent flow valve is placed in galvanostat outer working tube by screw and pressure cap.Realize the flow equalization of each section of injection/oil recovery of horizontal well, be not subject to the impact of pressure reduction in horizontal well pit shaft, thoroughly realized the even turnover of the flow of each well section.
2, be not subject to the impact of Horizontal Well tube length degree, can lengthen arbitrarily or shorten.The number of galvanostat and discharge capacity are determined by length and the horizontal well capacity of net horizontal section.
3, this device design realizes the flow equalization of each section of injection/oil recovery of horizontal well, can realize under the fluctuation pressure reduction of 1～ 10MPa 10,15,20,25,30,35-300m
3the constant flow of/d.Do not affect other tests of horizontal well or operation, maintain easily.
accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is permanent flow valve structure chart.
the specific embodiment:
The two ends of seating nipple 2 are respectively top connection 1, lower contact 8, the outer cylinder of seating nipple 2 has the radial direction through hole 9 of circumferential distribution, the cylinder of valve seat 10 coordinates with through hole 9, the inner chamber of valve seat 10 coordinates with the cylinder of permanent flow valve 4, fitting face has sealing ring 16, valve seat 10 has the inner chamber of axial hole 11 logical seating nipples 2, permanent flow valve 4 has heterotypic spray nozzle 6 to coordinate with plunger 5 is moving, one end of heterotypic spray nozzle 6 is connected with permanent flow valve 4, the other end is positioned at sleeve pipe 12 and is connected with spring 14 with the end play of plunger 5, this end has liquid outlet 15 to communicate with the hole 13 on sleeve pipe 12, one end of permanent flow valve 4 coordinates with the large end of plunger 5, the other end is heterotypic spray nozzle 6 imports, through hole 9 and permanent flow valve 4 are sealed by pressure cap 7.
According to needs of production, 180 degree change the direction of permanent flow valve 4 and valve seat 10 simultaneously.
Seating nipple is by top connection 1, and lower contact 8 is connected with oil pipe.
Some seating nipples 2 are connected on horizontal oil pipe.
Referring to Fig. 1, the evenly galvanostat of inject/oil recovery of horizontal well section, comprises galvanostat seating nipple 2 and permanent flow valve 4, and permanent flow valve 4 is fixed in galvanostat seating nipple 2 by pressure cap 7 and hold-down screw 3, has plunger 5 and heterotypic spray nozzle 6 in permanent flow valve 4.According to on-the-spot needs, permanent flow valve 4 can change direction by 180 degree, and in the time of pit shaft feed liquor, the plunger 5 in permanent flow valve 4, as Fig. 1, in the time of pit shaft fluid, is exchanged direction together with valve seat.
When on-the-spot use, according to engineering design requirement, evenly the galvanostat (comprising galvanostat outer working tube 2 and permanent flow valve 4 two parts) of inject/oil recovery of horizontal well section is connected lower to projected depth with oil pipe.Galvanostat is connected on to the horizontal segment of horizontal well, the number of galvanostat and discharge capacity are determined by length and the horizontal well capacity of net horizontal section.
Claims (4)
1. the galvanostat of even inject/oil recovery of horizontal well section, the two ends that it is characterized in that seating nipple (2) are respectively top connection (1), lower contact (8), the outer cylinder of seating nipple (2) has the radial direction through hole (9) of circumferential distribution, the cylinder of valve seat (10) coordinates with through hole (9), the inner chamber of valve seat (10) coordinates with the cylinder of permanent flow valve (4), fitting face has sealing ring (16), valve seat (10) has the inner chamber of the logical seating nipple (2) of axial hole (11), permanent flow valve (4) has that heterotypic spray nozzle (6) and plunger (5) are moving to be coordinated, one end of heterotypic spray nozzle (6) is connected with seating nipple (2), the other end is positioned at sleeve pipe (12) and is connected with spring (14) with the end play of plunger (5), this end has liquid outlet (15) to communicate with the hole (13) on valve seat (10), one end of permanent flow valve (4) coordinates with the large end of valve seat (10), the other end is heterotypic spray nozzle (6) import, through hole (9) and permanent flow valve (4) are sealed by pressure cap (7).
2. the galvanostat of inject/oil recovery of even horizontal well section according to claim 1, is characterized in that according to needs of production, and 180 degree change the direction of permanent flow valve (4) and valve seat (10) simultaneously.
3. the galvanostat of inject/oil recovery of even horizontal well section according to claim 1, is characterized in that seating nipple (2) is by top connection (1), and lower contact (8) is connected with oil pipe.
4. the galvanostat of inject/oil recovery of even horizontal well section according to claim 3, is characterized in that some work (2) is connected on horizontal oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763387.7U CN203594421U (en) | 2013-11-28 | 2013-11-28 | Constant flow device for evening injection/oil extraction cross section of horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763387.7U CN203594421U (en) | 2013-11-28 | 2013-11-28 | Constant flow device for evening injection/oil extraction cross section of horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594421U true CN203594421U (en) | 2014-05-14 |
Family
ID=50675316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763387.7U Expired - Lifetime CN203594421U (en) | 2013-11-28 | 2013-11-28 | Constant flow device for evening injection/oil extraction cross section of horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847318A (en) * | 2015-05-26 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | Rationing integrated set |
-
2013
- 2013-11-28 CN CN201320763387.7U patent/CN203594421U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847318A (en) * | 2015-05-26 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | Rationing integrated set |
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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: 20140514 |
|
| CX01 | Expiry of patent term |