CN102926687A - Integrated downhole tool for detecting, washing and fishing in oil-well operation - Google Patents
Integrated downhole tool for detecting, washing and fishing in oil-well operation Download PDFInfo
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- CN102926687A CN102926687A CN2012104896353A CN201210489635A CN102926687A CN 102926687 A CN102926687 A CN 102926687A CN 2012104896353 A CN2012104896353 A CN 2012104896353A CN 201210489635 A CN201210489635 A CN 201210489635A CN 102926687 A CN102926687 A CN 102926687A
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Abstract
The invention discloses an integrated downhole tool for detecting, washing and fishing in an oil-well operation, comprising an oil tube, a ball seat, a piston barrel, a piston, a conversion short joint, a fishing head, a sand-washing tube and a pressure relief device, wherein the upper part of the fishing head is in threaded connection with the oil tube, and the lower part of the fishing head is in threaded connection with the lower end of the piston barrel lined in the oil tube; the upper end of the piston barrel is connected with a suspension short joint via a shear pin; the upper part of the suspension short joint is in threaded connection with a ball seat fixing seat; the ball seat is pressed between the ball seat fixing seat and the upper end surface of the suspension short joint; the lower part of the suspension short joint is in threaded connection with the piston; the lower part of the piston is in threaded connection with the upper part of the conversion short joint; the lower part of the conversion short joint is in threaded connection with the centralizing short joint of the sand-washing tube; the lower part of the centralizing short joint of the sand-washing tube is in threaded connection with the sand-washing tube; and a throwing-type sealing ball used while shearing the shear pin is arranged on the ball seat, and a throwing-type pressure relief device used while relieving the pressure of a tube column above the sealing ball is arranged on the upper edge of the sealing ball.
Description
Technical field
The present invention relates to a kind of oilfield operation down-hole workover tool, specifically integrated underground tool is visited, rushed, drags for to a kind of oil well operation, solves sand, sand washing become flow chart with salvaging wrapping wire sand-proof pipe three road flow charts the problem of visiting.
Background technology
Heavy crude heat extraction because oil reservoir is shallow, easily shakes out, and most wells is implemented the construction of wrapping wire sand control.After oil well was implemented many rounds steam injection, the sand control system will be damaged, and only had the reorganization sand control, the normal production of guarantee oil well.Visit sand washing and be the checking pit shaft whether whether intact critical process of sand, sand control system is arranged.At present, operation troop verifies the sand control system by visiting this procedure of sand washing, and is then lower to steam injection without sand; Have sand then to propose to visit the washing pipe post, lower instrument or oil pipe make-up are extracted the wrapping wire sand-proof pipe, reorganize the sand control construction.So both increased the salvaging operation, and increased again operating cost and accounted for the well cycle.
Summary of the invention
The purpose of this invention is to provide a kind of oil well operation and visit, rush, drag for integrated underground tool, solve the defective that above-mentioned prior art exists.
Technical scheme of the present invention is achieved in the following ways:
The present invention includes oil pipe, ball seat, piston cylinder, piston, cross-over sub, fishing head, sand clean out pipe and pressure releasing device, it is characterized in that fishing head top is connected with tubing round thread, the bottom is threaded with the lower end of the piston cylinder of lining in oil pipe, the piston cylinder upper end is connected with the suspension short circuit with shear pin, hanging short circuit top is threaded with the ball seat holder, between ball seat holder and suspension short circuit upper surface, be pressed with ball seat, hanging the short circuit bottom is connected with piston thread, the piston bottom is threaded with cross-over sub top, the cross-over sub bottom is threaded with sand clean out pipe righting short circuit, and sand clean out pipe righting short circuit bottom is threaded with sand clean out pipe; Be provided with the releasing type ball sealer of using when cutting off shear pin, land used releasing type pressure releasing device when being provided with the above tubing string pressure of the blocking of divulging a secret in the ball sealer top at ball seat.
Fishing head is made as cylindrical, top internal diameter diameter is large, and bottom internal diameter diameter is little, and top is provided with the box thread that is connected with oil pipe, the bottom is provided with the box thread that is connected with piston cylinder, and lower, outer perimeter is provided with the male thread that the salvaging wrapping wire sand-proof pipe that is threaded with the wrapping wire sand-proof pipe is used.
Piston cylinder is made as cylindrical, and the upper end periphery is provided with two symmetrical shear pin holes, and the lower end is provided with male thread, is provided with sealing ring in the male thread upper periphery.
The suspension short circuit is made as cylindrical, and top is provided with male thread, and the middle and lower part periphery is provided with the shear pin hole corresponding with the shear pin hole on the piston cylinder, and the bottom is provided with male thread.
Piston is made as cylindrical, and the upper end is provided with box thread, and the lower end is provided with box thread, and periphery is provided with annular seal groove.
Cross-over sub is made as cylindrical, and the middle part diameter is large and be provided with the ring spill that prevents sand card piston and deposit sand launder, and the upper and lower is provided with male thread.
Sand clean out pipe righting short circuit is made as cylindrical, and the middle part is provided with external diameter less than the cylindrical centering ring of pipe aperture, and the lower end is curved to have the cochlear that can pry open ball sealer sharp.
Compared with the prior art the present invention has the following advantages:
1, the present invention's handle is visited sand, sand washing, salvaging wrapping wire sand-proof pipe three road flow charts simplify is one flow chart, has improved well workover efficient, has shortened the well workover cycle, has improved the production time efficiency of oil well, has saved workover cost.
2, minimizing one to secondary removes the operation of pipe, has reduced well workover workman's labour intensity, has reduced the operating risk probability, has reduced the environmental pollution degree.
3, utilize releasing type ball sealer and releasing type pressure releasing device, simplify the working string structure, be convenient to job execution, reduced task difficulty.
Description of drawings
Fig. 1-structural representation of the present invention;
Fig. 2-pressure releasing device structural representation;
1-oil pipe among the figure, the 2-ball seat, 3-ball seat holder, 4-hangs short circuit, 5-shear pin, 6-piston cylinder, 7-piston, 8-cross-over sub, 9-sand clean out pipe righting short circuit, 10-fishing head, 11-sand clean out pipe, 12-pressure releasing device.
The specific embodiment
For further disclosing technical scheme of the present invention, elaborate by embodiment below in conjunction with Figure of description:
The present invention includes oil pipe 1, ball seat 2, piston cylinder 6, piston 7, cross-over sub 8, fishing head 10, sand clean out pipe 11 and pressure releasing device 12, it is characterized in that fishing head 10 tops are connected with tubing round thread, the bottom is threaded with the lower end of the piston cylinder 6 of lining in oil pipe, piston cylinder 6 upper ends are connected with suspension short circuit 4 with shear pin 5, hanging short circuit 4 tops is threaded with ball seat holder 3, between ball seat holder 3 and suspension short circuit 4 upper surfaces, be pressed with ball seat 2, hanging short circuit 4 bottoms is threaded with piston 7, piston 7 bottoms are threaded with cross-over sub 8 tops, cross-over sub 8 bottoms are threaded with sand clean out pipe righting short circuit 9, and sand clean out pipe righting short circuit bottom is threaded with sand clean out pipe 11; Be provided with the releasing type ball sealer of using when cutting off shear pin, land used releasing type pressure releasing device when being provided with the above tubing string pressure of the blocking of divulging a secret in the ball sealer top at ball seat 2.
When application is of the present invention, be connected to the tubing string bottom, visit first with sand clean out pipe 11 whether sand is arranged in the wrapping wire sand-proof pipe, if sand is arranged, illustrate that sand-proof pipe lost efficacy, need to change sand-proof pipe, with sand clean out pipe the sand inside and outside the sand-proof pipe is gone out ground in sleeve pipe first, in the sand washing process, reduction along with the sand face, sand clean out pipe falls short of, drop into ball sealer in from ground to oil pipe, suppress and cut off shear pin, because it is very long to hang short circuit 4, pressing very long that sand clean out pipe 11 also stretches down, but can not make piston 7 stretch out piston cylinder 6, until reach the piston tube bottom, drop into pressure releasing device again ball sealer is pried open this moment, continues to beat water under high pressure on ground and carry out sand washing, sand buried the sand of sand-proof pipe and go out ground in sleeve pipe, or rush at the stratum, the unresisted environment of sandpipe is watched out in formation, and rotation pipeline makes being threaded togather of fishing head 10 and sand-proof pipe, proposes ground, changing new sand-proof pipe gets final product, if sand-proof pipe is good, directly sand washing gets final product, by the above-mentioned ball sealer of throwing first, the working programme of rear throwing pressure releasing device, the sand that stops up sand-proof pipe is washed open with water under high pressure, and taken sand and return out ground, propose sand-flushing pipe column after forming the good environment that crude oil enters sand-proof pipe and oil well pump, change pumping pipe string, just can drop into normal oil recovery.
Aboveground on probation three mouthfuls of Shengli Oil Field victory section directorial areas at present, all obtained success, individual well has been saved 7900 yuan of the costs of handling one-trip string, tries to achieve:
Direct economic benefit=7900 * 3=23700 unit.
Shifted to an earlier date simultaneously follow-up one time of construction so that the well workover time shorten one day, the year that has equaled to increase oil well rate when driving a well.Average day oily 4t/d calculates according to victory section directorial area individual well:
Indirect economic effect=4t/d * 3d * 3000 yuan/t=36000 unit.
Claims (7)
1. an oil well operation is visited, punching, drag for integrated underground tool, comprise oil pipe, ball seat, piston cylinder, piston, cross-over sub, fishing head, sand clean out pipe and pressure releasing device, it is characterized in that fishing head top is connected with tubing round thread, the bottom is threaded with the lower end of the piston cylinder of lining in oil pipe, the piston cylinder upper end is connected with the suspension short circuit with shear pin, hanging short circuit top is threaded with the ball seat holder, between ball seat holder and suspension short circuit upper surface, be pressed with ball seat, hanging the short circuit bottom is connected with piston thread, the piston bottom is threaded with cross-over sub top, the cross-over sub bottom is threaded with sand clean out pipe righting short circuit, and sand clean out pipe righting short circuit bottom is threaded with sand clean out pipe; Be provided with the releasing type ball sealer of using when cutting off shear pin, land used releasing type pressure releasing device when being provided with the above tubing string pressure of the blocking of divulging a secret in the ball sealer top at ball seat.
2. integrated underground tool is visited, rushed, drags for to oil well operation according to claim 1, it is characterized in that: fishing head is made as cylindrical, top internal diameter diameter is large, bottom internal diameter diameter is little, top is provided with the box thread that is connected with oil pipe, the bottom is provided with the box thread that is connected with piston cylinder, and lower, outer perimeter is provided with the male thread that the salvaging wrapping wire sand-proof pipe that is threaded with the wrapping wire sand-proof pipe is used.
3. oil well operation according to claim 1 is visited, is rushed, drags for integrated underground tool, and it is characterized in that: piston cylinder is made as cylindrical, and the upper end periphery is provided with two symmetrical shear pin holes, and the lower end is provided with male thread, is provided with sealing ring in the male thread upper periphery.
4. integrated underground tool is visited, rushed, drags for to oil well operation according to claim 1, it is characterized in that: hang short circuit and be made as cylindrical, top is provided with male thread, and the middle and lower part periphery is provided with the shear pin hole corresponding with the shear pin hole on the piston cylinder, and the bottom is provided with male thread.
5. oil well operation according to claim 1 is visited, is rushed, drags for integrated underground tool, and it is characterized in that: piston is made as cylindrical, and the upper end is provided with box thread, and the lower end is provided with box thread, and periphery is provided with annular seal groove.
6. oil well operation according to claim 1 is visited, is rushed, drags for integrated underground tool, and it is characterized in that: cross-over sub is made as cylindrical, and the middle part diameter is large and be provided with the ring spill that prevents sand card piston and deposit sand launder, and the upper and lower is provided with male thread.
7. integrated underground tool is visited, rushed, drags for to oil well operation according to claim 1, it is characterized in that: sand clean out pipe righting short circuit is made as cylindrical, the middle part is provided with external diameter less than the cylindrical centering ring of pipe aperture, and the lower end is curved to have the cochlear that can pry open ball sealer sharp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210489635.3A CN102926687B (en) | 2012-11-27 | 2012-11-27 | Oil well operation is visited, rushes, is dragged for integrated underground tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210489635.3A CN102926687B (en) | 2012-11-27 | 2012-11-27 | Oil well operation is visited, rushes, is dragged for integrated underground tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102926687A true CN102926687A (en) | 2013-02-13 |
| CN102926687B CN102926687B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210489635.3A Expired - Fee Related CN102926687B (en) | 2012-11-27 | 2012-11-27 | Oil well operation is visited, rushes, is dragged for integrated underground tool |
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| CN (1) | CN102926687B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779538A (en) * | 2017-09-15 | 2019-05-21 | 刘玉友 | Apparatus for work under a kind of oil well |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3814180A (en) * | 1972-08-31 | 1974-06-04 | Cities Service Oil Co | Well fishing apparatus |
| CN2660112Y (en) * | 2003-12-01 | 2004-12-01 | 中国石化胜利油田有限公司采油工艺研究院 | Anti-sand tool by utilizing down flushing process |
| CN2934556Y (en) * | 2005-10-28 | 2007-08-15 | 中国石油化工股份有限公司胜利油田分公司孤东采油厂 | Composite joint for sand flushing and salvaging |
| CN201246126Y (en) * | 2008-08-29 | 2009-05-27 | 中国石化股份胜利油田分公司孤东采油厂 | Well falling rubber part salvaging machine |
| CN201610731U (en) * | 2010-01-19 | 2010-10-20 | 中国石油化工股份有限公司 | Casing milling and salvaging integrated control tool |
| CN202850900U (en) * | 2012-11-27 | 2013-04-03 | 朱新华 | Downhole tool integrating operations of detection, washing and fishing of oil well |
-
2012
- 2012-11-27 CN CN201210489635.3A patent/CN102926687B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3814180A (en) * | 1972-08-31 | 1974-06-04 | Cities Service Oil Co | Well fishing apparatus |
| CN2660112Y (en) * | 2003-12-01 | 2004-12-01 | 中国石化胜利油田有限公司采油工艺研究院 | Anti-sand tool by utilizing down flushing process |
| CN2934556Y (en) * | 2005-10-28 | 2007-08-15 | 中国石油化工股份有限公司胜利油田分公司孤东采油厂 | Composite joint for sand flushing and salvaging |
| CN201246126Y (en) * | 2008-08-29 | 2009-05-27 | 中国石化股份胜利油田分公司孤东采油厂 | Well falling rubber part salvaging machine |
| CN201610731U (en) * | 2010-01-19 | 2010-10-20 | 中国石油化工股份有限公司 | Casing milling and salvaging integrated control tool |
| CN202850900U (en) * | 2012-11-27 | 2013-04-03 | 朱新华 | Downhole tool integrating operations of detection, washing and fishing of oil well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779538A (en) * | 2017-09-15 | 2019-05-21 | 刘玉友 | Apparatus for work under a kind of oil well |
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| Publication number | Publication date |
|---|---|
| CN102926687B (en) | 2015-09-30 |
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