CN201095975Y - Salvaging type gas lift valve for gas lift oil extraction - Google Patents
Salvaging type gas lift valve for gas lift oil extraction Download PDFInfo
- Publication number
- CN201095975Y CN201095975Y CNU2007201739340U CN200720173934U CN201095975Y CN 201095975 Y CN201095975 Y CN 201095975Y CN U2007201739340 U CNU2007201739340 U CN U2007201739340U CN 200720173934 U CN200720173934 U CN 200720173934U CN 201095975 Y CN201095975 Y CN 201095975Y
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- China
- Prior art keywords
- valve
- gas lift
- valve body
- assembly
- gas
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- 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
A gas lift valve which can be threw and fished as well as can be used for oil production by gas lift is applied for oil production by gas lift. A central hole arranged at the upper end of an upper valve body is internally provided with a tail blocking assembly, and the lower end of the upper valve body is connected with a sylphon bellowss assembly, a sylphon bellowss assembly, an inner valve head and a valve seat. The lower end of the sylphon bellowss assembly is connected with a lower valve body, the lower part of which is connected with a unaflow assembly. The utility model is characterized in that: the upper end of the upper valve body is provided with external thread. The outer surface of the upper valve body is fixed with an upper sealing group. The wall of the sylphon bellowss assembly is provided with an air inlet hole. The outer surface of the lower valve body is fixed with a lower sealing group. The gas lift valve has the effects that: when the gas lift valve is needed to be replaced, under the condition of not generating a pipe column, a tool using steel wire for operation is adopted to fish out the gas lift valve in the oil well, to replace the gas lift valve by a new gas lift valve, and to prepare the well productivity and to carry out fault resolution. The gas lift valve overcomes that the existing gas lift oil production well only can replace the gas lift valve by lifting the pipe column for oil production from the downhole. By adopting the gas lift valve of the utility model, the productive time cost by the remedial work of a gas-lift well is shortened, at the same time, well pressing is not needed and the operation cost is low.
Description
Technical field
The utility model relates to the gas-lift production technical field, be particularly related to a kind of dropping in and taking off type gas lift valve that is used for gas-lift production, be in a kind of gas lift valve installation work tube that is installed on the gas-lift well flow string, be used for controlling the gas injection rate of gas-lift well and the throttle control device of gas-lift well gas injection pressure.This device is with after special-purpose fishing head connects, can be according to production requirement, and by the mode of wire Launching and Bailing it is rendered in the gas lift valve installation work tube or from gas lift valve installation work tube and to pull out, can realize that allocate and the fault eliminating by production capacity toward carrying out for the motionless pipe of gas-lift well.
Background technology
At present, oil recovery gas-lift well gas injection control generally is to adopt fixed gas lift valve, and as Fig. 2, promptly gas lift valve is fixedly connected by top screw thread and seating nipple.The be fixedly connected shortcoming of gas lift valve of employing is: oil well production is after a period of time, and oil well productivity changes, or joins to produce and require to change, and the tolerance and the production capacity of originally joining by gas lift valve have not been complementary.Adjust gas injection if change valve opening, will trip out the tubing string operation; If gas lift valve breaks down, need to change gas lift valve, also need to trip out flow string from the down-hole.Tripping out the tubing string operation, to take the production time long, and the well killing fluid in the pit shaft is serious to formation damage.
The Chinese patent notification number is CN2639520Y, and a kind of flow-guiding type gas lift valve is provided.Be applicable to that intermittent gaslift recovers the oil.By upper valve body, middle valve body, valve body and ball-and-seat are formed down, have main valve head at the bellows of middle valve body, have side opening in the middle part of the main valve head, the bottom has flowing hole, and the pilot valve head is housed in main valve head, is provided with spring between main valve head and pilot valve head.By in main valve head, installing a diaphragm valve additional, be implemented in rapid switch under the less situation of bellows and gas injection pressure reduction, and guarantee the large-size that valve opening requires, have the switch flexibility and reliability, but under same ground injecting gas pressure the darker disconnected plug of liquid of lifting.
The utility model content
The purpose of this utility model is: a kind of dropping in and taking off type gas lift valve that is used for gas-lift production is provided, change the gas lift valve structure, can finish oil recovery gas-lift well gas injection control, when needs are changed gas lift valve, can be under the situation that does not play flow string, adopt the steel wire operation instrument that gas lift valve in the oil well is pulled out, more renew gas lift valve.Overcome existing gas-lift production well and can only trip out the deficiency that flow string is changed gas lift valve from the down-hole.
The technical solution adopted in the utility model is: be used for the dropping in and taking off type gas lift valve of gas-lift production, mainly be made up of the stifled assembly of tail, last seal group, upper valve body, bellows assembly, valve head, valve seat, following valve body, lower seal group, single current assembly.Have tail to block up assembly in the centre bore of the upper end of upper valve body, the lower end of upper valve body connects the bellows assembly, and valve head and valve seat are arranged in the bellows assembly.Bellows assembly lower end connects valve body down, is connected with the single current assembly in the bottom of following valve body.It is characterized in that: there is external screw thread the upper end at upper valve body, and when needs were changed gas lift valve, external screw thread can connect with the special-purpose fishing head that steel wire hangs, and just can pull gas lift valve out seating nipple, or slips out of the hand by jarring gas lift valve and fishing head are stayed in the seating nipple.Be fixed with seal group at the external surface of upper valve body.On the total wall-forming of bellows, air inlet is arranged.External surface at following valve body is fixed with the lower seal group.Last seal group and lower seal group separate air inlet and mineshaft annulus, after the lifting gas in the assurance sleeve pipe enters seating nipple, can inject oil pipe from air inlet, to reach the purpose of control gas injection rate.
Last seal group and lower seal group are made up of the v-seal packing that 8 oil resistant glue are made respectively, install relatively for per 4 one group.
The quantity of described air inlet is 4, is evenly distributed on the protective bulkhead of bellows assembly, and the particular location of air inlet is on the top of valve seat.
The beneficial effects of the utility model are: be used for the dropping in and taking off type gas lift valve of gas-lift production, changed the structure of existing gas lift valve, can finish oil recovery gas-lift well gas injection control.When needs are changed gas lift valve, can under the situation that does not play flow string, adopt the steel wire operation instrument that gas lift valve in the oil well is pulled out, more renew gas lift valve, production capacity allotment and fault and get rid of.Overcome existing gas-lift production well and can only trip out flow string replacing gas lift valve from the down-hole.Adopt the utility model gas lift valve, can shorten the gas-lift well workover treatment and take the production time, do not need kill-job simultaneously, operating cost is low.
Description of drawings
Fig. 1 is the dropping in and taking off type gas lift valve structural profile schematic diagram that is used for gas-lift production.
Among the figure: 1. the stifled assembly of tail, 2. go up seal group, 3. upper valve body, 4. bellows assembly, 5. valve head, 6. air inlet, 7. valve seat 8. descends valve body, 9. lower seal group, 10. single current assembly.
The specific embodiment
Embodiment 1: consult Fig. 1.With an external diameter is that the dropping in and taking off type gas lift valve that is used for gas-lift production of 25.4 millimeters specifications is an example, is elaborated.
The external diameter of upper valve body 3 and following valve body 8 all is 25.4 millimeters.Have tail to block up assembly 1 in the centre bore of the upper end of upper valve body 3, the lower end of upper valve body 3 connects bellows assembly 4, and valve head 5 and valve seat 7 are arranged in the bellows assembly 4.Bellows assembly 4 lower ends connect valve body 8 down, are connected with single current assembly 10 in the bottom of following valve body 8.Last seal group 2 and lower seal group 9 are made up of the v-seal packing that 8 oil resistant glue are made respectively, install relatively for per 4 one group.The external diameter of last seal group 2 and lower seal group 9 is 26.4 millimeters.Last seal group 2 and lower seal group 9 are separately fixed at the external surface of upper valve body 3 and the external surface of following valve body 8.Can seal with the valve bag inner surface of eccentric pulling seating nipple.There is external screw thread upper end at upper valve body 3.Air inlet 6 is arranged on the protective bulkhead of bellows assembly 4.The quantity of air inlet 6 is 4, and diameter is 6 millimeters, is evenly distributed on bellows assembly 4 walls, and the particular location of air inlet 6 is on the top of valve seat 7.
Summary is used the wire Launching and Bailing operation to throw at the scene or is salvaged process of the present utility model, helps understanding the utility model.
1, launch process
A. debugged gas lift valve, and it connected with fishing head, makeup valve drop-in tool then, on connect whipstock, knuckle, bumper jar, weighted lever and rope socket.
B. transfer tool string, carry and the throw string on arriving behind the gas lift valve fitting depth, whipstock is located along the guide rail in the seating nipple, on carry the tool string deflecting, make gas lift valve aim at the valve bag.
C. transfer tool string gas lift valve is dropped into the valve bag, jarring makes drop-in tool unclamp fishing head, on carry tool string and slip out of the hand.
D. tripping out tool string gets final product.
2, salvaging process
A. connect whipstock, knuckle, bumper jar, weighted lever and rope socket on the fishing tool.
B. transfer tool string, carry and the throw string on arriving behind the gas lift valve fitting depth, whipstock is located along the guide rail in the seating nipple, on carry the tool string deflecting, make fishing tool aim at the valve bag.
C. transfer tool string, make fishing tool catch fishing head, upwards jarring is pulled out the valve bag with gas lift valve.
D. trip out tool string.
Claims (3)
1; a kind of dropping in and taking off type gas lift valve that is used for gas-lift production; mainly by the stifled assembly (1) of tail; last seal group (2); upper valve body (3); bellows assembly (4); valve head (5); valve seat (7); following valve body (8); lower seal group (9); single current assembly (10) is formed; in the upper end centre bore of upper valve body (3), there is tail to block up assembly (1); the lower end of upper valve body (3) connects bellows assembly (4); valve head (5) and valve seat (7) are arranged in the bellows assembly (4); bellows assembly (4) lower end connects valve body (8) down; bottom at following valve body (8) is connected with single current assembly (10); it is characterized in that: there is external screw thread the upper end at upper valve body (3); external surface at upper valve body (3) is fixed with seal group (2); on bellows assembly (4) protective bulkhead, air inlet (6) is arranged, be fixed with lower seal group (9) at the external surface that descends valve body (8).
2, the dropping in and taking off type gas lift valve that is used for gas-lift production according to claim 1 is characterized in that: go up seal group (2) and lower seal group (9) and be made up of the v-seal packing that 8 oil resistant glue are made respectively, install relatively for per 4 one group.
3, the dropping in and taking off type gas lift valve that is used for gas-lift production according to claim 1; it is characterized in that: the quantity of described air inlet (6) is 4; be evenly distributed on the protective bulkhead of bellows assembly (4), the particular location of air inlet (6) is on the top of valve seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739340U CN201095975Y (en) | 2007-11-01 | 2007-11-01 | Salvaging type gas lift valve for gas lift oil extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739340U CN201095975Y (en) | 2007-11-01 | 2007-11-01 | Salvaging type gas lift valve for gas lift oil extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201095975Y true CN201095975Y (en) | 2008-08-06 |
Family
ID=39923026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201739340U Expired - Lifetime CN201095975Y (en) | 2007-11-01 | 2007-11-01 | Salvaging type gas lift valve for gas lift oil extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201095975Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563969A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | CYT-1 concentric dropping-fishing type gas lifting tool and use method thereof |
| CN112302589A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
-
2007
- 2007-11-01 CN CNU2007201739340U patent/CN201095975Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563969A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | CYT-1 concentric dropping-fishing type gas lifting tool and use method thereof |
| CN104563969B (en) * | 2013-10-29 | 2017-08-04 | 中国石油天然气股份有限公司 | A kind of concentric retrievable type gaslift instruments of CYT 1 and application method |
| CN112302589A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
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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: 20080806 |