CN2586812Y - Continuous sand flushing tool - Google Patents
Continuous sand flushing tool Download PDFInfo
- Publication number
- CN2586812Y CN2586812Y CN 02281034 CN02281034U CN2586812Y CN 2586812 Y CN2586812 Y CN 2586812Y CN 02281034 CN02281034 CN 02281034 CN 02281034 U CN02281034 U CN 02281034U CN 2586812 Y CN2586812 Y CN 2586812Y
- Authority
- CN
- China
- Prior art keywords
- sand flushing
- continuous
- sand
- continuous sand
- tubing string
- 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
The utility model relates to a continuous sand flushing tool which is composed of a well mouth sealing device 1, a well mouth four way 2, a sand flushing oil pipe 3, a sleeve pipe 4, a center pipe column 5, an anti-clamping joint 6, an inverting joint 7 and a sealing assembly 8. Because the continuous sand flushing tool adopts the well mouth sealing device, a main body part, the center pipe column and the inverting joint, the main body part of the continuous sand flushing tool moves downwards in the center pipe column. The continuous sand flushing tool is provided with the anti-clamping joint arranged at the bottom of the center pipe column to prevent the continuous sand flushing tool from being clamped when a sand flushing pipe column is lifted upwards, and the sand flushing pipe column under the main body part of the continuous sand flushing tool adopts a chamfering oil pipe. The continuous sand flushing tool has compact structure and convenient operation. Compared with the conventional sand flushing operation, the continuous sand flushing tool improves the construction efficiency of the operation and reduces the occurrence of accidents under the well in operation. Simultaneously, the utility model solves the sand flushing problems of big displacement wells and horizontal wells.
Description
The utility model relates to the downhole tool that uses on the oilfield, particularly a kind of continuous sand flushing instrument.
Oil well shakes out in process of production in a large number, extraction along with crude oil, sand in the sleeve pipe is on the increase, and these reservoir sands go out after to a certain degree, must carry out sand washing, present domestic sand washing construction is also mainly based on conventional sand washing, promptly dash one single connect one single, must termination of pumping when making up a joint, in the process of making up a joint, the sand that dashes from the shaft bottom is easy to and sinks to the shaft bottom, causes sand to bury lock of tool drilling.
The purpose of this utility model is to provide a kind of continuous sand flushing instrument, under the situation of not termination of pumping, just can make up a joint smoothly, thereby realize the continuous sand flushing in shaft bottom, has promptly saved the engineering time, has avoided the generation of sand setting lock of tool drilling again.
The purpose of this utility model is to realize like this, it is made up of well mouth sealing device (1), well head four-way (2), sand washing oil pipe (3), sleeve pipe (4), middle tubing string (5), anti-sticking joint (6), commutation joint (7), seal assembly (8), well mouth sealing device (1) is connected with well head four-way (2), middle tubing string (5) top is connected on the well mouth sealing device (1), the bottom connects anti-sticking joint (6), is followed successively by sand washing oil pipe (3), commutation joint (7), seal assembly (8), sand washing oil pipe (3) in it from top to bottom.
When carrying out the continuous sand flushing operation, tubing string in the middle of at first being lowered in sleeve pipe is lowered to the sand washing oil pipe again in middle tubing string, main part is connected on sand washing tubing string top.When the sand washing tubing string arrives sand face top 2-10m down, the dress well mouth sealing device.Manifold of ground connects back turn on pump sand washing, sand cleaning fluid enters from the inlet of well mouth sealing device, between the annular space of middle tubing string and sand washing oil pipe, move down, after the commutation of commutation joint, enter in the sand washing tubing string, in the sand washing tubing string, move to following, carry out sand washing when arriving the outlet of sand clean out pipe column bottom, dash sand from the shaft bottom under the carrying of sand cleaning fluid, move upward in the annular space of inner room and middle tubing string, the outlet on big four is returned to ground.After going out one section sand, transfer one section sand washing tubing string, after an oil pipe is transferred to the end, must termination of pumping, just can connect next root oil pipe and carry out sand washing, according to this dashing one by one to the purpose well depth.
The utility model has been owing to adopted well mouth sealing device, middle tubing string, commutation joint, thus the main part of continuous sand flushing instrument in middle tubing string to moving down; Meet card when preventing to carry the sand washing tubing string, designed the bottom of tubing string in the middle of the anti-sticking joint is installed in, and the following sand washing tubing string of the main part of continuous sand flushing instrument will be selected the chamfering oil pipe for use.Its tool construction compactness, easy and simple to handle; Improved job execution efficient, compared with the sand washing operation of routine, the generation of down-hole accident when having reduced operation has solved the sand washing problem of extended reach well and horizontal well simultaneously.
Accompanying drawing is a structural representation of the present utility model.
Below the utility model is further specified.
As shown in the figure, the utility model is made up of well mouth sealing device 1, well head four-way 2, sand washing oil pipe 3, sleeve pipe 4, middle tubing string 5, anti-sticking joint 6, commutation joint 7, seal assembly 8 it, well mouth sealing device 1 is connected with well head four-way 2, middle tubing string 5 tops are connected on the well mouth sealing device 1, the bottom connects anti-sticking joint 6, is followed successively by sand washing oil pipe 3, commutation joint 7, seal assembly 8, sand washing oil pipe 3 in it from top to bottom.
For not termination of pumping in the process that is implemented in sand washing, between sand washing tubing string and well bore casing, increased the middle tubing string of one deck, the main part of continuous sand flushing instrument links to each other with the sand washing tubing string, be lowered in the middle tubing string, and the sand washing joint is connected on the foot of sand washing tubing string, on the well head big four, well mouth sealing device is housed, this sealing device plays the sealing function at well head place when boring sand washing down, because the main part of continuous sand flushing instrument moves to following in middle tubing string, so the length of middle tubing string is Duoed 30 meters than the sand buried depth, in addition, meet card when carrying the sand washing tubing string on preventing, designed the bottom of tubing string in the middle of the anti-sticking joint is installed in, simultaneously, the following sand washing tubing string of the main part of continuous sand flushing instrument will select the chamfering oil pipe.
During work, after well is ready to complete, tubing string part at first down, the main part of sand washing tubing string and continuous sand flushing then, the main part of determining continuous sand flushing according to the sand setting degree of depth and intervalve column length is in the position of sand washing tubing string, with sand washing on earth the distance of the anti-sticking joint of rear body part on the middle tubing string be 15 meters and be advisable.The sand washing tubing string is during down to the above 2--10m of sand face, the dress well mouth sealing device, and afterwards, observation the pressure of the drill and pump pressure are noted in the turn on pump sand washing in work progress, control the lowering velocity of sand washing well.
Be specially adapted to extended reach well and horizontal well in addition, make extended reach well and horizontal well sand washing become possibility.
Claims (2)
1, a kind of continuous sand flushing instrument, it is made up of well mouth sealing device (1), well head four-way (2), sand washing oil pipe (3), sleeve pipe (4), middle tubing string (5), anti-sticking joint (6), commutation joint (7), seal assembly (8) it, it is characterized in that: well mouth sealing device (1) is connected with well head four-way (2), middle tubing string (5) top is connected on the well mouth sealing device (1), the bottom connects anti-sticking joint (6), is followed successively by sand washing oil pipe (3), commutation joint (7), seal assembly (8), sand washing oil pipe (3) in it from top to bottom.
2, continuous sand flushing instrument according to claim 1, it is characterized in that: the sand washing oil pipe will select the chamfering oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281034 CN2586812Y (en) | 2002-11-07 | 2002-11-07 | Continuous sand flushing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281034 CN2586812Y (en) | 2002-11-07 | 2002-11-07 | Continuous sand flushing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2586812Y true CN2586812Y (en) | 2003-11-19 |
Family
ID=33743551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02281034 Expired - Fee Related CN2586812Y (en) | 2002-11-07 | 2002-11-07 | Continuous sand flushing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2586812Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092869B (en) * | 2007-07-23 | 2010-05-12 | 辽河石油勘探局 | Inverse circular sand washing adapter connector in rotary type of twin pipe |
| CN102094586A (en) * | 2010-12-24 | 2011-06-15 | 中国石油天然气股份有限公司 | Ground sand washing device for horizontal well and application method thereof |
| CN102777138A (en) * | 2011-11-14 | 2012-11-14 | 中国石油大学(北京) | Method combining coiled tubing with supercritical CO2 for jet-flow sand washing plugging removal |
| CN103388464A (en) * | 2012-05-10 | 2013-11-13 | 中国石油大学(华东) | Concentric double pipe column reverse circulation continuous coal dust washing system well head device |
| CN105625969A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Continuous sand flushing conversion tool |
| CN107165590A (en) * | 2017-06-08 | 2017-09-15 | 石明 | Pollution-free lost circulation prevention sand flushing device and application method |
| 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 |
| CN111075362A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Fast plug drilling string and method |
| CN115288625A (en) * | 2022-10-08 | 2022-11-04 | 廊坊开发区森德石油设备有限公司 | Sand washing and fishing equipment |
-
2002
- 2002-11-07 CN CN 02281034 patent/CN2586812Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092869B (en) * | 2007-07-23 | 2010-05-12 | 辽河石油勘探局 | Inverse circular sand washing adapter connector in rotary type of twin pipe |
| CN102094586A (en) * | 2010-12-24 | 2011-06-15 | 中国石油天然气股份有限公司 | Ground sand washing device for horizontal well and application 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 ground sand washing device for horizontal well |
| CN102777138A (en) * | 2011-11-14 | 2012-11-14 | 中国石油大学(北京) | Method combining coiled tubing with supercritical CO2 for jet-flow sand washing plugging removal |
| CN103388464A (en) * | 2012-05-10 | 2013-11-13 | 中国石油大学(华东) | Concentric double pipe column reverse circulation continuous coal dust washing system well head device |
| CN105625969A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Continuous sand flushing conversion tool |
| CN107165590A (en) * | 2017-06-08 | 2017-09-15 | 石明 | Pollution-free lost circulation prevention sand flushing device and application method |
| 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 |
| CN111075362A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Fast plug drilling string and method |
| CN115288625A (en) * | 2022-10-08 | 2022-11-04 | 廊坊开发区森德石油设备有限公司 | Sand washing and fishing equipment |
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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 |