CN2660112Y - Anti-sand tool by utilizing down flushing process - Google Patents
Anti-sand tool by utilizing down flushing process Download PDFInfo
- Publication number
- CN2660112Y CN2660112Y CN 200320121074 CN200320121074U CN2660112Y CN 2660112 Y CN2660112 Y CN 2660112Y CN 200320121074 CN200320121074 CN 200320121074 CN 200320121074 U CN200320121074 U CN 200320121074U CN 2660112 Y CN2660112 Y CN 2660112Y
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- CN
- China
- Prior art keywords
- sliding sleeve
- joint
- down method
- wash down
- method sand
- 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.)
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Abstract
The utility model discloses an undershoot sand protection tool comprising a well washing device, a mandril device and a letting-in device. The well washing device comprises a well washing joint (1) and a piston (3) fixed by a pin (5) in the internal chamber of the joint; the mandril device comprises a joint (6) connected with the well washing joint (1), a sliding bush mandril (14) connected on the female threads of the joint (6), a wash pipe nipple (17) connected on the sliding bush mandril (14), a spring (8) fit over the sliding bush mandril (14) and a sliding bush (12) installed on the lower part of the spring; the letting-in device comprises a release joint (13) connected with the sliding bush, a centralized nipple (15) connected with the release joint (13) and a landing joint (9) equipped between the joint (6) and the release joint (13). The utility model has sand washing device which reduces the runs of sand washing pipe and the operational cost; at the same time, the utility model increases the speed of the sand protection operation and shortens the production halt cycle. Therefore, the utility model can be widely used in petroleum exploration.
Description
One, technical field
The utility model relates to the oil exploitation downhole tool, relates in particular to a kind of wash down method sand preventing tool.
Two, background technology
Existing gravel pack instrument mainly is made of unidirectional leather cup, central tube and releasing device, can finish the gravel filling sand prevention process operation under the normal condition, and once for this anti-sand method contributes, but it also exists following shortcoming or deficiency.
1, because its length is big, generally more than 1.8m, be difficult to be lowered to smoothly design attitude for the sand proof well instrument of casing deformation, often cause to be lowered to failure, trip out heavy inferior repetition construction problem;
2,, in the process of going into the well,, cause sand control construction failure because situations such as casing deformation, destruction usually scratch leather cup because its seal is unidirectional leather cup;
3, because it does not have sand washing mechanism, running into has the situation of sand setting just to be hampered in the well, instrument can not be lowered to design attitude, cause the instrument of tripping out, after being lowered to the sand washing tubing string and carrying out the sand washing operation, be lowered to packing tool again and carry out sand control treatment, so just cause and repeatedly play lower tubular column, increased the work operations amount, the waste human, financial, and material resources.
Three, summary of the invention
The technical problems to be solved in the utility model provides a kind of wash down method sand preventing tool, shortcoming or deficiency that it can overcome effectively or avoid existing in the above-mentioned prior art.
Wash down method sand preventing tool described in the utility model comprises well washing apparatus, spindle unit and stays the well device that described well washing apparatus comprises the piston that Flush coupling and inner chamber thereof are fixed by pin.Described spindle unit comprises the joint that is connected with described Flush coupling, with the sliding sleeve axle that this joint internal thread is connected, is connected in the washing pipe pipe nipple on this sliding sleeve axle, the sliding sleeve that install the spring of suit and its underpart on the sliding sleeve axle.Described back-off sub of staying the well device to comprise to link to each other with sliding sleeve and coupled centering short segment are installed the landing joint between joint and back-off sub.
Wherein, the wall of described Flush coupling is provided with by-pass prot.The axle outer wall of described sliding sleeve is provided with the spline of projection, and its lower end is provided with the outer shoulder that matches with shoulder in the sliding sleeve.Described back-off sub is that left-hand thread is connected with sliding sleeve.Described landing joint external surface is provided with the gingival cyst of mucous gland in the newborn button.Be provided with on the sliding sleeve inwall and the internal spline that matches with protruding spline on the sliding sleeve axle outer wall.
The utility model has following advantage compared with prior art:
1, increased a new utility for the wash down method sand control;
2, the utility model deft design, compact conformation, can be rated as small and exquisite, length is little, has only the 1/2 long of prior art, it is unblocked to go into the well, and improves the sand control success rate;
3, have sand flushing device, reduced the rountrip of sand washing tubing string, lowered operating cost, improved sand control treatment speed, shortened oil well and stopped production the cycle.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment
Referring to accompanying drawing, a kind of wash down method sand preventing tool comprises well washing apparatus, spindle unit and stays the well device, and described well washing apparatus comprises Flush coupling 1 and is fixed in the piston 3 of its inner chamber by pin 5.Described spindle unit comprises the joint 6 that is connected with Flush coupling 1, is connected in the sliding sleeve axle 14 on joint 6 internal threads, is connected in the washing pipe pipe nipple 17 on the sliding sleeve axle 14, the spring 8 of suit and the sliding sleeve 12 that installs its underpart on the sliding sleeve axle 14.Back-off sub of staying the well device to comprise to link to each other with sliding sleeve 12 13 and coupled centering short segment 15 are installed the landing joint 9 between joint 6 and back-off sub 13.
The wall of Flush coupling 1 is provided with by-pass prot 4, and sliding sleeve axle 14 outer walls are provided with the spline 11 of projection, sliding sleeve 12 inwalls be provided with sliding sleeve axle 14 outer walls on the internal spline that matches of spline 11 of projection.Sliding sleeve axle 14 lower ends are provided with the outer shoulder that matches with shoulder in the sliding sleeve 12.Back-off sub 13 and sliding sleeve 12 are for left-hand thread is connected, and positive tube post can make back-off sub 13 be connected with sliding sleeve 12 disengagements, realizes giving up.Landing joint 9 external surfaces are provided with gingival cyst of mucous gland in the newborn button 10.
Claims (7)
1, a kind of wash down method sand preventing tool comprises well washing apparatus, spindle unit and stays the well device, it is characterized in that described well washing apparatus comprises the piston (3) that Flush coupling (1) and inner chamber thereof are fixed by pin (5); Described spindle unit comprises the joint (6) that is connected with described Flush coupling (1), be connected in the sliding sleeve axle (14) on joint (6) internal thread, be connected in the washing pipe pipe nipple (17) on this sliding sleeve axle (14), sliding sleeve axle (14) goes up the spring (8) of suit and the sliding sleeve (12) that install its underpart; Described back-off sub of staying the well device to comprise to link to each other with sliding sleeve (12) (13) and coupled centering short segment (15) are installed the landing joint (9) between joint (6) and back-off sub (13).
2, wash down method sand preventing tool according to claim 1 is characterized in that the wall of described Flush coupling (1) is provided with by-pass prot (4).
3, wash down method sand preventing tool according to claim 1 is characterized in that described sliding sleeve axle (14) outer wall is provided with the spline (11) of projection.
4, wash down method sand preventing tool according to claim 3 is characterized in that described sliding sleeve axle (14) lower end is provided with the outer shoulder that matches with the interior shoulder of sliding sleeve (12).
5,, it is characterized in that described back-off sub (13) is connected for left-hand thread with sliding sleeve (12) according to claim 1 or 2 or 3 described wash down method sand preventing tools.
6,, it is characterized in that described landing joint (9) external surface is provided with gingival cyst of mucous gland in the newborn button (10) according to claim 1 or 2 or 3 or 4 described wash down method sand preventing tools.
7, according to claim 1 or 2 or 3 or 4 described wash down method sand preventing tools, the inwall that it is characterized in that described sliding sleeve (12) is provided with the internal spline that matches with the spline (11) of projection on sliding sleeve axle (14) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121074 CN2660112Y (en) | 2003-12-01 | 2003-12-01 | Anti-sand tool by utilizing down flushing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121074 CN2660112Y (en) | 2003-12-01 | 2003-12-01 | Anti-sand tool by utilizing down flushing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660112Y true CN2660112Y (en) | 2004-12-01 |
Family
ID=34348260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320121074 Expired - Fee Related CN2660112Y (en) | 2003-12-01 | 2003-12-01 | Anti-sand tool by utilizing down flushing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2660112Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926687A (en) * | 2012-11-27 | 2013-02-13 | 朱新华 | Integrated downhole tool for detecting, washing and fishing in oil-well operation |
| CN104632146A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | High-pressure packing sand prevention tool |
-
2003
- 2003-12-01 CN CN 200320121074 patent/CN2660112Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926687A (en) * | 2012-11-27 | 2013-02-13 | 朱新华 | Integrated downhole tool for detecting, washing and fishing in oil-well operation |
| CN102926687B (en) * | 2012-11-27 | 2015-09-30 | 朱新华 | Oil well operation is visited, rushes, is dragged for integrated underground tool |
| CN104632146A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | High-pressure packing sand prevention tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |