CN207161027U - A kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device - Google Patents
A kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device Download PDFInfo
- Publication number
- CN207161027U CN207161027U CN201721135904.0U CN201721135904U CN207161027U CN 207161027 U CN207161027 U CN 207161027U CN 201721135904 U CN201721135904 U CN 201721135904U CN 207161027 U CN207161027 U CN 207161027U
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- CN
- China
- Prior art keywords
- well
- tubing string
- shut
- plug
- shallow
- 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 - Fee Related
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Abstract
It the utility model is related to a kind of shallow shut-in well for preventing from altering on tubing string and bore plug and bridging plug fishing device.Mainly solve the problems, such as that top on solution sealing pipe column or drilling tool easily occur after existing oil-water well shut-in well causes blowout or casualty accident.It is characterized in that：The well head four-way left and right ends connect kill line respectively（4）Relief line（5）, the well head four-way top is connected with hydraulic pressure pipe clamping device（3）, hydraulic pressure pipe clamping device（3）Top connects big orifice casing short joint（2）, big orifice casing short joint（2）Top is connected with double ram type preventer（1）.This prevent shallow shut-in well for being altered on tubing string bore plug and bridging plug fishing device can reliably control tubing string voluntarily on the speed altered, realize safe construction.
Description
Technical field
Oilfield is the utility model is related to, specifically a kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug is salvaged
Device.
Background technology
Many oil-water wells are in the environmentally sensitive areas such as village village, arable land, grassland, the woods, lake, river at present, due to wellblock
Locate remote, nurse is difficult, often by artificial destruction, cause environmental pollution, it is necessary to take cement plug or bridging plug shunt in a well with
Eliminate safety and environmental protection hidden danger.After shut-in well, shaft bottom constantly builds the pressure, and is reproduced to deblocking next time and adds certain difficulty, especially right
In the shallower well of cement plug or bridging plug depth of setting, usually there is top on solution sealing pipe column or drilling tool and cause blowout or casualty accident.
In the past in operation process is unsealed, mainly take and beat elevator and tie up steel wire rope, with preventer blowout prevention and the method on anti-top, security
Difference, often there is the problem of elevator and ram block damage.
The content of the invention
In order to overcome existing oil-water well, blowout or casualty accident are caused in top on easy appearance solution sealing pipe column or drilling tool after shunting in a well
Deficiency, the utility model provide it is a kind of prevent the shallow shut-in well altered on tubing string from boring plug and bridging plug fishing device, this is prevented on tubing string
The shallow shut-in well altered bores plug and bridging plug fishing device can reliably control tubing string voluntarily on the speed altered, realize safe construction.
The technical solution of the utility model is：A kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device, bag
Well head four-way is included, the well head four-way left and right ends connect the relief line of kill line respectively, and the well head four-way top connects
Hydraulic pressure pipe clamping device is connected to, hydraulic pressure pipe clamping device top connection big orifice casing short joint, big orifice casing short joint top is connected with double-gate
Plate preventer.
The utility model has the advantages that：Due to taking such scheme, pressure balance is carried out by kill line,
It is controlled, and bridging plug is mentioned in big orifice casing short joint to pushing up speed on tubing string with reference to hydraulic pressure pipe clamping device, so as to can
By control tubing string voluntarily on the speed altered, reach the purpose of safe construction.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
1- double ram type preventers in figure, 2- big orifice casing short joints, 3- hydraulic pressure pipe clamping devices, 4- kill lines, 5- blooie pipes
Line.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device, including well head four-way, institute
The relief line 5 that well head four-way left and right ends connect kill line 4 respectively is stated, the well head four-way top is connected with hydraulic pressure card pipe
Device 3, the top of hydraulic pressure pipe clamping device 3 connection big orifice casing short joint 2, the top of big orifice casing short joint 2 is connected with double ram type preventer
1.The chucking power of wherein hydraulic pressure pipe clamping device 3 is sufficiently large, and can reliably clamp tubing string, the diameter of big orifice casing short joint 2 can
Accommodate bridging plug.
When unsealing bridging plug, wellhead equipment is installed as shown in figure, tripping in is salvaged unsealing tool, upper lifting pipe post deblocking, such as sent out
Existing tubing string has upper top trend, closes hydraulic pressure pipe clamping device 3 immediately, opens relief line 5, half envelope closed on double ram type preventer 1
Flashboard, open flow is carried out, when open flow stops, pressure balance is carried out by kill line 4 with pump truck, coordinates with hydraulic pressure pipe clamping device 3
Speed is pushed up on control tubing string, tubing string in well is risen, when bridging plug instrument is played, hydraulic pressure pipe clamping device 3 is reached into maximum position, will
Bridging plug is mentioned in big orifice casing short joint 2, after abundant pressure release, is opened half envelope flashboard, is acted bridging plug.
When shallow shut-in well bores plug, wellhead equipment is installed as shown in figure, tripping in milling tool, such as finds that tubing string has upper top to become
Gesture, hydraulic pressure pipe clamping device 3 is closed immediately, open relief line 5, close half envelope flashboard of double ram type preventer 1, carry out open flow, treat
When open flow stops, pressure balance is carried out by kill line 4 with pump truck, coordinates with hydraulic pressure pipe clamping device 3 and pushes up speed on control tubing string,
Milling tubing string in well is risen, by controlling the opening of hydraulic pressure pipe clamping device 3, allows the cement plug being ejected to slowly enter big orifice
In casing short joint 2, after abundant pressure release, half envelope flashboard is opened, takes out remaining cement plug.
Claims (1)
1. a kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device, including well head four-way, it is characterised in that：It is described
Well head four-way left and right ends connect kill line respectively（4）Relief line（5）, the well head four-way top is connected with hydraulic pressure card
Pipe device（3）, hydraulic pressure pipe clamping device（3）Top connects big orifice casing short joint（2）, big orifice casing short joint（2）Top is connected with double
Ram preventer（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721135904.0U CN207161027U (en) | 2017-09-06 | 2017-09-06 | A kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721135904.0U CN207161027U (en) | 2017-09-06 | 2017-09-06 | A kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161027U true CN207161027U (en) | 2018-03-30 |
Family
ID=61720403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721135904.0U Expired - Fee Related CN207161027U (en) | 2017-09-06 | 2017-09-06 | A kind of shallow shut-in well for preventing from altering on tubing string bores plug and bridging plug fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899017A (en) * | 2019-03-20 | 2019-06-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of continuous tubing drill mill underbalance cement plug operation construction method |
| CN112145111A (en) * | 2020-11-06 | 2020-12-29 | 中国石油天然气集团有限公司 | Method for salvaging wear-resistant sleeve under pressure operation |
-
2017
- 2017-09-06 CN CN201721135904.0U patent/CN207161027U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899017A (en) * | 2019-03-20 | 2019-06-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of continuous tubing drill mill underbalance cement plug operation construction method |
| CN109899017B (en) * | 2019-03-20 | 2021-06-25 | 中国石油天然气集团有限公司 | Drilling and grinding underbalanced cement plug operation construction method for coiled tubing |
| CN112145111A (en) * | 2020-11-06 | 2020-12-29 | 中国石油天然气集团有限公司 | Method for salvaging wear-resistant sleeve under pressure operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 |