CN201068748Y - Horizontal well continue sand-flushing device - Google Patents
Horizontal well continue sand-flushing device Download PDFInfo
- Publication number
- CN201068748Y CN201068748Y CNU2007201172072U CN200720117207U CN201068748Y CN 201068748 Y CN201068748 Y CN 201068748Y CN U2007201172072 U CNU2007201172072 U CN U2007201172072U CN 200720117207 U CN200720117207 U CN 200720117207U CN 201068748 Y CN201068748 Y CN 201068748Y
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- oil pipe
- sand washing
- backwash valve
- self
- valve
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Abstract
A horizontal well continuous sand washing device relates to a sand washing device. The utility model aims at solving the problem that when sand washing the sand washing pipe column of the general straight well is easy to cause the rock debris to sink and lead to secondary depositing and blocking the pipe column. The upper end of a working barrel (6) of the utility model is provided with a self-given blowout preventer (5), the lower end of an upper oil pipe (8) is connected with the upper end of an oil sleeve converter (3), a first backwash valve (7) is arranged on the upper oil pipe (8) at the lower end of the working barrel (6), a second backwash valve (9) is arranged on the upper oil pipe (8) at the lower part inside the working barrel (6), a third backwash valve (10) is arranged on the upper oil pipe (8) at the upper end of the self-given blowout preventer (5), the lower end of the oil sleeve converter (3) is connected with the upper end of a lower oil pipe (4), the lower end of the lower oil pipe (4) is connected with the upper end of a safety valve (2), and the lower end of the safety valve (2) is connected with a rotational flow sand washing device. The utility model can realize continuous sand washing without stopping a pump; each part has reliable performance, good imperviousness, suavity and noleak, thereby playing the role of improving the sand washing efficiency and preventing the pipe column from being blocked.
Description
Technical field
The utility model relates to a kind of sand flushing device.
Background technology
In the horizontal well workover treatment, for satisfying the needs that solve sand card and flushing fish head, need carry out the sand washing operation, but the horizontal well landwaste is difficult for returning out easy secondary deposition card tubing string after the termination of pumping.At present the conventional straight well sand washing tubing string that adopts carries out sand washing, after 1 of sand washing is single, must termination of pumping makes up a joint, and will cause this moment landwaste to sink, and cause the secondary deposition to block tubing string.So the sand washing tubing string of conventional straight well is the needs of incompatibility horizontal well sand washing.
The utility model content
The purpose of this utility model is when carrying out sand washing for the sand washing tubing string that solves conventional straight well, easily causes landwaste to sink, and causes the problem of secondary deposition card tubing string, and a kind of horizontal well continuous sand flushing device is provided.
The utility model is made up of well head part and down-hole part, the down-hole part is by eddy flow sand washing machine 1, safety valve 2, oil jacket converter 3 and following oil pipe 4 are formed, the well head part is by self-sealing blowout preventer 5, seating nipple 6, first backwash valve 7, last oil pipe 8, second backwash valve 9 and the 3rd backwash valve 10 are formed, last oil pipe 8 is arranged in the seating nipple 6, the upper end of seating nipple 6 is provided with self-sealing blowout preventer 5, the lower end of last oil pipe 8 is connected with the upper end of oil jacket converter 3, first backwash valve 7 is arranged on the last oil pipe 8 of seating nipple 6 lower ends, second backwash valve 9 is arranged on the last oil pipe 8 of bottom in the seating nipple 6, the 3rd backwash valve 10 is arranged on the last oil pipe 8 of self-sealing blowout preventer 5 upper ends, the lower end of oil jacket converter 3 is connected with the upper end of following oil pipe 4, the lower end of following oil pipe 4 is connected with the upper end of safety valve 2, and the lower end of safety valve 2 is connected with eddy flow sand washing machine 1.
The utlity model has following beneficial effect: the utility model can be realized not termination of pumping continuous sand flushing, and each component capabilities is reliable, good airproof performance, does not sting and does not leak, and reaches the purpose that improves sand washing efficient, tubing string anti-sticking.Owing to be continuous sand flushing, thoroughly solved the problem that landwaste sinks to causing the secondary deposition to block tubing string.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.Reference numeral 11 among the figure is well casings of oil well.
The specific embodiment
The specific embodiment one: see Fig. 1, present embodiment is made up of well head part and down-hole part, the down-hole part is by eddy flow sand washing machine 1, safety valve 2, oil jacket converter 3 and following oil pipe 4 are formed, the well head part is by self-sealing blowout preventer 5, seating nipple 6, first backwash valve 7, last oil pipe 8, second backwash valve 9 and the 3rd backwash valve 10 are formed, last oil pipe 8 is arranged in the seating nipple 6, the upper end of seating nipple 6 is provided with self-sealing blowout preventer 5, the lower end of last oil pipe 8 is connected with the upper end of oil jacket converter 3, first backwash valve 7 is arranged on the last oil pipe 8 of seating nipple 6 lower ends, second backwash valve 9 is arranged on the last oil pipe 8 of bottom in the seating nipple 6, the 3rd backwash valve 10 is arranged on the last oil pipe 8 of self-sealing blowout preventer 5 upper ends, the lower end of oil jacket converter 3 is connected with the upper end of following oil pipe 4, the lower end of following oil pipe 4 is connected with the upper end of safety valve 2, and the lower end of safety valve 2 is connected with eddy flow sand washing machine 1.When sand washing intact one single after, do not need termination of pumping, directly on tubing string, connect backwash valve and last oil pipe, continue sand washing and in well, all rinse well.
The specific embodiment two: see Fig. 1, the self-sealing blowout preventer 5 of present embodiment is made up of back-up ring 51, sealing ring 52 and sleeve 53, sealing ring 52 is installed in the sleeve 53, sleeve 53 is arranged at the top of back-up ring 51, back-up ring 51 sidewalls are provided with inlet opening 54, the sidewall of sleeve 53 is provided with fluid hole 55, and this sealing structure is good, does not sting and does not leak.
Above-mentioned horizontal well continuous sand flushing device, its operating principle is: see Fig. 1, transfer in the process at tubing string, backwash valve 7 in the seating nipple 6 is descending with tubing string, when it shifted out seating nipple 6, top backwash valve 7 entered in the seating nipple 6 simultaneously, and 6 passage is provided from the oil pipe to the seating nipple for flushing liquor, realized not termination of pumping lengthening washover pipe, the purpose of the well continuous sand flushing that is up to the standard.If work progress runs into the bigger situation of flushing resistance, the automatic earial drainage of safety valve guarantees construction safety.
Claims (2)
1. horizontal well continuous sand flushing device, it is made up of well head part and down-hole part, it is characterized in that the down-hole part is by eddy flow sand washing machine (1), safety valve (2), oil jacket converter (3) and following oil pipe (4) are formed, the well head part is by self-sealing blowout preventer (5), seating nipple (6), first backwash valve (7), last oil pipe (8), second backwash valve (9) and the 3rd backwash valve (10) are formed, last oil pipe (8) is arranged in the seating nipple (6), the upper end of seating nipple (6) is provided with self-sealing blowout preventer (5), the lower end of last oil pipe (8) is connected with the upper end of oil jacket converter (3), first backwash valve (7) is arranged on the last oil pipe (8) of seating nipple (6) lower end, second backwash valve (9) is arranged on the last oil pipe (8) of the interior bottom of seating nipple (6), the 3rd backwash valve (10) is arranged on the last oil pipe (8) of self-sealing blowout preventer (5) upper end, the lower end of oil jacket converter (3) is connected with the upper end of following oil pipe (4), the lower end of following oil pipe (4) is connected with the upper end of safety valve (2), and the lower end of safety valve (2) is connected with eddy flow sand washing machine (1).
2. according to the described horizontal well continuous sand flushing device of claim 1, it is characterized in that self-sealing blowout preventer (5) is made up of back-up ring (51), sealing ring (52) and sleeve (53), sealing ring (52) is installed in the sleeve (53), sleeve (53) is arranged at the top of back-up ring (51), back-up ring (51) sidewall is provided with inlet opening (54), and the sidewall of sleeve (53) is provided with fluid hole (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201172072U CN201068748Y (en) | 2007-10-17 | 2007-10-17 | Horizontal well continue sand-flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201172072U CN201068748Y (en) | 2007-10-17 | 2007-10-17 | Horizontal well continue sand-flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068748Y true CN201068748Y (en) | 2008-06-04 |
Family
ID=39490128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201172072U Expired - Fee Related CN201068748Y (en) | 2007-10-17 | 2007-10-17 | Horizontal well continue sand-flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068748Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094586A (en) * | 2010-12-24 | 2011-06-15 | 中国石油天然气股份有限公司 | Horizontal well sand washing ground device and using method thereof |
| CN104074485A (en) * | 2014-06-27 | 2014-10-01 | 西安中孚凯宏石油科技有限责任公司 | Horizontal well leakage-proof rotational flow sand-washing device and sand-washing technology thereof |
| CN104088595A (en) * | 2014-06-27 | 2014-10-08 | 西安中孚凯宏石油科技有限责任公司 | Horizontal well leakage-preventing double-layer oil pipe isolating circulation mechanism |
| CN107217997A (en) * | 2017-07-18 | 2017-09-29 | 中国石油集团渤海钻探工程有限公司 | Self-styled circulation isolating tool can be closed |
-
2007
- 2007-10-17 CN CNU2007201172072U patent/CN201068748Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094586A (en) * | 2010-12-24 | 2011-06-15 | 中国石油天然气股份有限公司 | Horizontal well sand washing ground device and using method thereof |
| CN102094586B (en) * | 2010-12-24 | 2014-02-19 | 中国石油天然气股份有限公司 | Application method of horizontal well sand washing device |
| CN104074485A (en) * | 2014-06-27 | 2014-10-01 | 西安中孚凯宏石油科技有限责任公司 | Horizontal well leakage-proof rotational flow sand-washing device and sand-washing technology thereof |
| CN104088595A (en) * | 2014-06-27 | 2014-10-08 | 西安中孚凯宏石油科技有限责任公司 | Horizontal well leakage-preventing double-layer oil pipe isolating circulation mechanism |
| CN104074485B (en) * | 2014-06-27 | 2016-08-31 | 西安中孚凯宏石油科技有限责任公司 | A kind of horizontal well lost circulation prevention cyclone sand washing device device and sand washing process thereof |
| CN104088595B (en) * | 2014-06-27 | 2016-08-31 | 西安中孚凯宏石油科技有限责任公司 | Horizontal well lost circulation prevention double layer oil pipe isolation cycle mechanism |
| CN107217997A (en) * | 2017-07-18 | 2017-09-29 | 中国石油集团渤海钻探工程有限公司 | Self-styled circulation isolating tool can be closed |
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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: 20080604 Termination date: 20161017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |