CN2729301Y - Underground tool for conveying cement pack - Google Patents
Underground tool for conveying cement pack Download PDFInfo
- Publication number
- CN2729301Y CN2729301Y CN 200420030138 CN200420030138U CN2729301Y CN 2729301 Y CN2729301 Y CN 2729301Y CN 200420030138 CN200420030138 CN 200420030138 CN 200420030138 U CN200420030138 U CN 200420030138U CN 2729301 Y CN2729301 Y CN 2729301Y
- Authority
- CN
- China
- Prior art keywords
- ash
- central tube
- tubing anchor
- underground tool
- underground
- 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 discloses an underground tool for conveying cement plugs used for the layer-by-layer oil test, the separate zone production and sealing interlayer of oil and gas wells. The underground tool for conveying cement plugs is composed of a pressure hoisting central pipe 1, an upper joint 2 of a tubing anchor, a shear pin 4, the tubing anchor 5, a lower joint 6 of the tubing anchor, a limit joint 8, a connecting gland 9, an outer joint 10 of a central pipe, the central pipe 11, an ash feeding cylinder 12, an ash support 13 and O-shaped sealing rings 3, 7. The underground tool has the advantages of simple operation and convenient construction. With the underground tool, the cementing plug construction can be simplified, the cost and time can be saved, and underground accidents can be avoided. The underground tool also can be used for solving the difficult problems of loss of well cementing plugs, and the difficult problems can not be solved with general cyclical methods.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for oil, gas well formation testing by layer, separate zone production and shutoff interlayer.
Background technology:
In oil, gas well formation testing by layer, separate zone production and shutoff interlayer process, need carry out cementing plug (claiming " ash plug " usually) construction.At present, on-the-spot when carrying out the cement plug construction, adopt first lower tubular column to finishing projected depth; Water transfer mud in ground is squeezed in the pipe with cementing truck behind the well-flushing, replaces clear water to design attitude; In 1.5 weeks of upper lifting pipe post anti-flushing well, wash out superfluous water mud; 100 meters on upper lifting pipe post is filled well head; Closing well is waited and is coagulated; Visit 20 meters on the qualified back of red dog upper lifting pipe post, pressure testing is qualified finishes construction.This kind work progress is comparatively miscellaneous, and is consuming time many, and down-hole accident easily takes place the expense height.
Summary of the invention:
The purpose of this utility model be to provide a kind of construct simple, easy to operate, can save time, expense, avoid the transmission ash plug downhole tool of down-hole accident.
The utility model is to realize like this.This kind downhole tool by pressure carry central tube, the upper and lower joint of tubing anchor, tubing anchor, positioning joint, connection gland, central tube socket, central tube, send ash tube, ash holder, " O " RunddichtringO, shear pin form, pressure is carried the central tube outside and is set with tubing anchor, is connected and fixed by shear pin and tubing anchor top connection therebetween; Tubing anchor lower contact lower end is connected with a positioning joint with screw thread, and the outside is set with the connection gland; Connect the gland lower end and be connected with sending the ash tube, send in the ash tube bottom ash holder is housed with screw thread; Pressure is carried the central tube lower end and is connected by the central tube of central tube socket with its below.
This device course of work is as follows: before going into the well the ash holder is installed in and send grey tube bottom, use dowel fixes, G.I.H is packed cement into and is sent in the ash tin, on connect gland and tubing anchor, central tube and tubing anchor pin with pin, utilize oil pipe G.I.H design attitude; Press down behind the seat sealed tube anchor, cut off the locking pin, central tube is descending, cuts off ash holder fixing pin, ejects the ash holder, and ash is depended on self tension force and is attached on the casing wall, prevents that cement from sinking; Upper lifting pipe post central tube drives to send on the ash tube and moves, and injects clear water simultaneously in central tube, by cement weight and clear water pressure, cement is ejected send the ash tube to drop in the ash holder, mixes with clear water in pit shaft and the central tube, is frozen into cement plug.
The utility model is simple to operate, and easy construction utilizes it can simplify cementing plug construction, cost saving and time, and can avoid the generation of down-hole accident, this instrument also can be in order to finish the difficult problem with the indeterminable absorption well cementing plug of regular circulation method.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
As shown in the figure: the utility model is carried central tube 1, tubing anchor top connection 2, shear pin 4, tubing anchor 5, oil pipe uranium lower contact 6, positioning joint 8, connection gland 9, central tube socket 10, central tube 11, is sent ash tube 12, ash holder 13, " O " shape sealing ring 3,7 to form by pressure, its structure, assembled relation are as follows: press and carry central tube 1 outside and be set with tubing anchor 5, be connected and fixed by shear pin 4 and tubing anchor top connection 2 therebetween; Oil pipe lower contact 6 lower ends are connected with a positioning joint 8 with screw thread, and the outside is set with and connects gland 9; Connection gland 9 lower ends are connected with sending ash tube 12 with screw thread, send ash tube 12 interior bottoms that ash holder 13 is housed; Pressure is carried central tube 1 lower end and is connected by the central tube 11 of central tube socket 10 with its below.Wherein, it is an elongated pipe that pressure is carried central tube 1, descending top central tube is opened grey jacking, and last belt goes out delivery means, and its upper and lower end is respectively equipped with pin thread, top is provided with pin hole, there are a shoulder that matches with positioning joint 8 and tubing anchor lower contact 6, central tube 11 in lower thread top, and to be an internal diameter carry the elongated pipe that central tube is 1 identical, external diameter is slightly little with pressure, is connected with screw thread by central tube socket 10 therebetween, in order to back down ash holder 13, inject clear water.Sending ash tube 12 is the cylinder that a upper and lower part diameter is big, the middle part has undergauge slightly, sends into the downhole designs position in order to the dress cement paste, and its upper end is provided with and is connected the internal thread that gland 9 matches, and the bottom is provided with in order to penetrate the pin hole that pin connects the ash holder.Ash holder 13 is one " U " font packing element, in order to the support cement paste, prevents that cement paste from sinking.
Claims (1)
1, a kind of transmission ash plug downhole tool, carry central tube (1), tubing anchor top connection (2), shear pin (4), tubing anchor (5), tubing anchor lower contact (6), positioning joint (8), connect gland (9), central tube socket (10), central tube (11), send ash tin (12), ash to ask (13), " O " shape sealing ring (3), (7) to form by pressure, it is characterized in that, pressure is carried central tube (1) outside and is set with tubing anchor (5), is connected and fixed by shear pin (4) and tubing anchor top connection (2) therebetween; Oil pipe lower contact (6) lower end is connected with a positioning joint (8) with screw thread, and the outside is set with and connects gland (9); Connect gland (9) lower end and be connected with sending ash tube (12), send ash tube (12) interior bottom that ash holder (13) is housed with screw thread; Pressure is carried central tube (1) lower end and is connected by the central tube (11) of central tube socket (10) with its below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030138 CN2729301Y (en) | 2004-01-13 | 2004-01-13 | Underground tool for conveying cement pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030138 CN2729301Y (en) | 2004-01-13 | 2004-01-13 | Underground tool for conveying cement pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2729301Y true CN2729301Y (en) | 2005-09-28 |
Family
ID=35048078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420030138 Expired - Fee Related CN2729301Y (en) | 2004-01-13 | 2004-01-13 | Underground tool for conveying cement pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2729301Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542490A (en) * | 2017-07-31 | 2018-01-05 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of shut-in well method for scrapping mined out well |
-
2004
- 2004-01-13 CN CN 200420030138 patent/CN2729301Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542490A (en) * | 2017-07-31 | 2018-01-05 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of shut-in well method for scrapping mined out well |
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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 |