CN202560181U - Pipe-column sand setting device - Google Patents
Pipe-column sand setting device Download PDFInfo
- Publication number
- CN202560181U CN202560181U CN2012200331509U CN201220033150U CN202560181U CN 202560181 U CN202560181 U CN 202560181U CN 2012200331509 U CN2012200331509 U CN 2012200331509U CN 201220033150 U CN201220033150 U CN 201220033150U CN 202560181 U CN202560181 U CN 202560181U
- Authority
- CN
- China
- Prior art keywords
- sand
- pipe
- setting device
- sand setting
- screen casing
- 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 pipe-column sand setting device, and belongs to the technical field of filtering and sand control tools of circulation liquid inside sand washing pipe columns and in the plug drilling during the oil field well repair operation. The sand setting device is composed of an upper joint, a screen pipe, an outer pipe and a lower joint. Step-shaped inner threads are arranged on the lower joint which is connected with the outer pipe and the screen pipe respectively, and the upper end of the outer pipe is in threaded connection with the upper joint. The pipe-column sand setting device has the advantages that the sand carrying capacity of the circulation liquid can be improved effectively, and the risk of drilling tool blocking or clamping is avoided when the circulation liquid is used by the plug drilling and sand washing.
Description
Technical field:The utility model relates to a kind of tubing string sand-settling device, when belonging to oil well repairing operation, to boring the circulation fluid filtration sand preventing tool technical field in plug, the sand washing tubing string.
Background technology:When plug, sand washing construction are bored in underground work, must landwaste, sand grains be brought to ground through the circulation workover fluid; Could accomplish and bore plug and sand washing operation, at present workover fluid be through circulatory pool carry out impurity, sand grains freely precipitates, need dig out sedimentation basin, circulatory pool on ground like this; Workload is big, and face of land booty also can be brought into and stop up drilling tool in the well, causes round trip or lock of tool drilling; Cause construction period to prolong, operating cost increases.
ZL03257101 discloses a kind of tubing string sand-settling device that is used for sand control in the mechanical oil recovery tubing string.Be coupled to each other and form by top connection assembly, water conservancy diversion pipe nipple, sand device, outer tube, centering ring, interior pipe, lower contact.Interior pipe is an oil flow channel; Interior pipe constitutes the sand setting chamber with outer tube; Sand device prevents to recover the oil, and sand setting gets into tubing string sand-settling device bottom oil pipe in the oil pipe, and the guiding sand setting gets into the sand setting chamber, but its only is fit to use under mechanical oil recovery in pump or the completion work progress, can not satisfy the needs of down-hole workover treatment.
Summary of the invention:The purpose of the utility model is in order to overcome in the prior art because of the workover fluid impurity content is high, and the defective that causes drilling tool to stop up provides a kind of tubing string sand-settling device that can effectively filter workover fluid.
The utility model is made up of top connection, screen casing, outer tube, lower contact, and lower contact is provided with stepped internal thread, is connected with screen casing with outer tube respectively, and the outer tube upper end is threaded with top connection.
The upper end of screen casing is a blind plate, has filtering holes on the side pipe wall.
The blind plate of screen casing upper end is taper.
The beneficial effect of the utility model is in that the circulation fluid that plug, sand washing use filters to boring, during the throttling sand control, can effectively improve the prop-carrying capacity of circulation fluid, avoids drilling tool to stop up or the risk of bit freezing.
Description of drawings:Fig. 1 is the utility model structural representation.
The specific embodiment:Can be known that by accompanying drawing 1 the utility model is made up of top connection 1, screen casing 2, outer tube 3, lower contact 4, lower contact 4 is provided with stepped internal thread, is connected with screen casing 2 with outer tube 3 respectively, and outer tube 3 upper ends are threaded with top connection 1.
The upper end of said screen casing 2 is a blind plate, has filtering holes 5 on the side pipe wall.
The blind plate of screen casing 2 upper ends is taper.
When boring plug or positive sand washing; The top connection 1 of the utility model is connected with down-hole string; Lower contact 4 is connected with drilling tool, and circulation fluid will get into the screen casing 2 of the utility model and the annular space of outer tube 3, and circulates through the 5 entering drilling tools of the filtering holes on the screen casing 2; Impurity in the circulation fluid, sand grains then are deposited in screen casing 2 and outer tube 3 annular spaces, thereby realize avoiding circulation fluid to stop up the generation of accidents such as down-hole equipment or bit freezing.
Claims (3)
1. tubing string sand-settling device; Form by top connection (1), screen casing (2), outer tube (3), lower contact (4); It is characterized in that: lower contact (4) is provided with stepped internal thread, is connected with screen casing (2) with outer tube (3) respectively, and outer tube (3) upper end is threaded with top connection (1).
2. a kind of tubing string sand-settling device according to claim 1 is characterized in that: the upper end of screen casing (2) is a blind plate, has filtering holes (5) on the side pipe wall.
3. a kind of tubing string sand-settling device according to claim 1 and 2 is characterized in that: the blind plate of screen casing (2) upper end is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200331509U CN202560181U (en) | 2012-02-02 | 2012-02-02 | Pipe-column sand setting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200331509U CN202560181U (en) | 2012-02-02 | 2012-02-02 | Pipe-column sand setting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560181U true CN202560181U (en) | 2012-11-28 |
Family
ID=47209846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200331509U Expired - Fee Related CN202560181U (en) | 2012-02-02 | 2012-02-02 | Pipe-column sand setting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725008A (en) * | 2017-09-05 | 2018-02-23 | 中国石化江汉油田分公司江汉采油厂 | It is a kind of to integrate the anti-blocking screen casing tubing string to recover the oil with sand washing |
| CN107762436A (en) * | 2017-11-17 | 2018-03-06 | 中交第航务工程勘察设计院有限公司 | Novel double-tube core barrel |
-
2012
- 2012-02-02 CN CN2012200331509U patent/CN202560181U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725008A (en) * | 2017-09-05 | 2018-02-23 | 中国石化江汉油田分公司江汉采油厂 | It is a kind of to integrate the anti-blocking screen casing tubing string to recover the oil with sand washing |
| CN107725008B (en) * | 2017-09-05 | 2024-03-08 | 中国石油化工股份有限公司 | Anti-blocking sieve tube column integrating oil extraction and sand washing |
| CN107762436A (en) * | 2017-11-17 | 2018-03-06 | 中交第航务工程勘察设计院有限公司 | Novel double-tube core barrel |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20160202 |