CN204140060U - Oil well, well sleeve pipe small displacement leak finding device - Google Patents
Oil well, well sleeve pipe small displacement leak finding device Download PDFInfo
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- CN204140060U CN204140060U CN201420439595.6U CN201420439595U CN204140060U CN 204140060 U CN204140060 U CN 204140060U CN 201420439595 U CN201420439595 U CN 201420439595U CN 204140060 U CN204140060 U CN 204140060U
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- water
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- well
- sleeve pipe
- pressure
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Abstract
The utility model provides a kind of oil well, well sleeve pipe small displacement leak finding device, comprise Tube-colume for seanching leakage area, restriction choke, differential pressure type packer, well head water injecting valve door, well head total valve, sleeve valve, water filling controller is set, water filling controller comprise connected by pipeline successively water supply connector, weighing apparatus banish hydrophone, the first shockproof pressure gage, the first high pressure valve, electronic grout flow meter, the second shockproof pressure gage, the second high pressure valve, water out adapter, bypass valve in parallel between water supply connector with water out adapter.The utility model is applicable to that water injection well sleeve pipe leak point pressure is high, leak source water absorption is little, easy construction, and water injection well ground coordinates without special vehicle, cost-saving, and volume is little, can arbitrarily movement.
Description
Technical field
The utility model relates to a kind of oil well, well sleeve pipe small displacement leak finding device, particularly little to Casing Failure leak source water absorption, water injection pressure is high, and the hackly leak finding device of internal surface of casing.
Background technology
Along with deepening continuously of oil field development, oil-water well, because long-term injecting water sleeve pipe is through long-term corrosion, is out of shape, bores a hole, equivalent damage phenomenon of breaking is serious.Current routine leakage method of looking for is by doubling method, works interior differential pressure type packer+restriction choke of going into the well, and ground cement car coordinates to water filling in Tube-colume for seanching leakage area, obtains the water absorption of leak source under relative water injection pressure, finally finds out the leak source between 5m distance.
Coordinate water filling with cementing truck on ground, because cementing truck discharge capacity is large, when casing leakage amount is little, leak point pressure height time, water injection pressure rises instantaneously, after termination of pumping pressure again bust fall zero.Casing Failure is through long-term corrosion, and the coarse injustice of full well section sleeve surface, packer is difficult to sealing, and when packer is in not blind hole section, after termination of pumping, pressure also falls zero instantaneously, so just cannot judge whether sleeve pipe has leak source, can not accurately determine leak source position.
Summary of the invention
The purpose of this utility model is design a kind of oil well, well sleeve pipe small displacement leak finding device, utilizes water filling controller to realize small displacement and looks for leakage operation.
The technical solution of the utility model: a kind of oil well of the present utility model, well sleeve pipe small displacement leak finding device comprise Tube-colume for seanching leakage area, restriction choke, differential pressure type packer, well head water injecting valve door, well head total valve, sleeve valve, water filling controller is set, water filling controller comprise connected by pipeline successively water supply connector, weighing apparatus banish hydrophone, the first shockproof pressure gage, the first high pressure valve, electronic grout flow meter, the second shockproof pressure gage, the second high pressure valve, water out adapter, bypass valve in parallel between water supply connector with water out adapter.
Advantage of the present utility model:
The utility model is applicable to that water injection well sleeve pipe leak point pressure is high, leak source water absorption is little, easy construction, and water injection well ground coordinates without special vehicle, cost-saving, and volume is little, can arbitrarily movement.
Accompanying drawing explanation
Fig. 1 is structural principle block diagram of the present utility model.
Detailed description of the invention
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is structural principle block diagram of the present utility model:
A kind of oil well of the present utility model, well sleeve pipe small displacement leak finding device comprise Tube-colume for seanching leakage area 1, restriction choke 2, differential pressure type packer 3, well head water injecting valve door 4, well head total valve 5, sleeve valve 6, water filling controller 17 is set, water filling controller 17 comprise connected by pipeline successively water supply connector 7, weighing apparatus banish hydrophone 8, first shockproof pressure gage 9, first high pressure valve 10, electronic grout flow meter 11, second shockproof pressure gage 12, second high pressure valve 13, water out adapter 14, bypass valve 15 in parallel between water supply connector 7 with water out adapter 14.16 is shunt valves.
When the utility model uses, require that Tube-colume for seanching leakage area 1 is installed restriction choke 2 routinely, differential pressure type packer 3 puts into oil well, well sleeve pipe 18, install well head water injecting valve door 4, well head total valve 5, sleeve valve 6, be connected in the water filling source that water filling controller 17 water supply connector 7 and water injection well water under high pressure or cementing truck provide, water out adapter 14 is connected with well head water injecting valve door 4 pipeline.
First, be positive well-flushing flow process, namely open bypass valve 15, well head water injecting valve door 4, well head total valve 5, sleeve valve 6, control water injection rate is ascending, start Tube-colume for seanching leakage area 1 water filling, when Tube-colume for seanching leakage area 1 is by full irrigation, Tube-colume for seanching leakage area 1 inside and outside differential pressure becomes large, now differential pressure type packer 3 sets under the effect of pressure reduction, set rear Tube-colume for seanching leakage area 1 inside and outside differential pressure to continue to increase to 1.4-1.6MPa, restriction choke 2 is opened, and forms positive well-flushing passage, until after being filled by sleeve pipe 18, water returns out well head.
After sleeve pipe 18 returns water, the first high pressure valve 10, second high pressure valve 13 of water filling controller opened in order by closedown sleeve gate 6, bypass valve 15, now become positive water filling flow process, the water pressure of operation industry personnel record first shockproof pressure gage 9, electronic grout flow meter 11, second shockproof pressure gage 12 and the instant displacement changing value, flowmeter numerical value.So repeatedly remove Tube-colume for seanching leakage area 1 by conventional doubling method, find out leak source within 5m scope.
Water under high pressure is banishd hydrophone 8 by weighing apparatus and is adjusted to and is adapted to sleeve pipe blind hole section wastage water filling discharge capacity (displacement size is adjusted to 20 sides/sky from 5 sides/sky, banish hydrophone water nozzle to realize by changing weighing apparatus), the instant displacement and the injection rate of current Injection Well inner sleeve blind hole section is shown by electronic grout flow meter.Weighing apparatus is banishd hydrophone 8 water nozzle and can be changed size at any time as required, guarantees its accuracy of looking for Lou data.
The stable high voltage water that the utility model utilizes cementing truck or injection pipe network etc. to provide, water filling in Tube-colume for seanching leakage area 1, by the pressure of observation and the minor variations of discharge capacity, can accurately judge whether down-hole has leak source and can determine the accurate location of leak source, and the water absorption of leak source under different injection pressure can be calculated, thus the accurate mistake leakage quantity of absorption well section under enrollment organizations pressure, discharge capacity.
Claims (1)
1. an oil well, well sleeve pipe small displacement leak finding device, comprise Tube-colume for seanching leakage area (1), restriction choke (2), differential pressure type packer (3), well head water injecting valve door (4), well head total valve (5), sleeve valve (6), it is characterized in that: water filling controller (17) is set, water filling controller (17) comprises the water supply connector (7) connected by pipeline successively, hydrophone (8) banishd by weighing apparatus, first shockproof pressure gage (9), first high pressure valve (10), electronic grout flow meter (11), second shockproof pressure gage (12), second high pressure valve (13), water out adapter (14), bypass valve in parallel (15) between water supply connector (7) with water out adapter (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439595.6U CN204140060U (en) | 2014-08-06 | 2014-08-06 | Oil well, well sleeve pipe small displacement leak finding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439595.6U CN204140060U (en) | 2014-08-06 | 2014-08-06 | Oil well, well sleeve pipe small displacement leak finding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140060U true CN204140060U (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420439595.6U Expired - Fee Related CN204140060U (en) | 2014-08-06 | 2014-08-06 | Oil well, well sleeve pipe small displacement leak finding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140060U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246166A (en) * | 2016-08-11 | 2016-12-21 | 中国石油天然气股份有限公司 | A kind of leakage of injecting loses method of testing |
| CN106522930A (en) * | 2015-09-09 | 2017-03-22 | 中国石油天然气股份有限公司 | Leakage detection device for tube wall of oil well |
| CN111878069A (en) * | 2020-08-04 | 2020-11-03 | 华信唐山石油装备有限公司 | Composite continuous pipe cable oil-water well casing leakage finding system and method |
| CN113494288A (en) * | 2020-04-08 | 2021-10-12 | 中国石油天然气股份有限公司 | Oil pipe leakage finding method and well repairing method |
-
2014
- 2014-08-06 CN CN201420439595.6U patent/CN204140060U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522930A (en) * | 2015-09-09 | 2017-03-22 | 中国石油天然气股份有限公司 | Leakage detection device for tube wall of oil well |
| CN106522930B (en) * | 2015-09-09 | 2019-07-05 | 中国石油天然气股份有限公司 | Oil well tube wall leak finding device |
| CN106246166A (en) * | 2016-08-11 | 2016-12-21 | 中国石油天然气股份有限公司 | A kind of leakage of injecting loses method of testing |
| CN106246166B (en) * | 2016-08-11 | 2019-07-02 | 中国石油天然气股份有限公司 | A kind of injection well leak-off-test method |
| CN113494288A (en) * | 2020-04-08 | 2021-10-12 | 中国石油天然气股份有限公司 | Oil pipe leakage finding method and well repairing method |
| CN113494288B (en) * | 2020-04-08 | 2023-08-22 | 中国石油天然气股份有限公司 | Oil pipe leakage finding method and well repairing method |
| CN111878069A (en) * | 2020-08-04 | 2020-11-03 | 华信唐山石油装备有限公司 | Composite continuous pipe cable oil-water well casing leakage finding system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20150806 |
|
| EXPY | Termination of patent right or utility model |