CN201024977Y - A multi-function concrete injection well fixing device - Google Patents
A multi-function concrete injection well fixing device Download PDFInfo
- Publication number
- CN201024977Y CN201024977Y CNU2007200120210U CN200720012021U CN201024977Y CN 201024977 Y CN201024977 Y CN 201024977Y CN U2007200120210 U CNU2007200120210 U CN U2007200120210U CN 200720012021 U CN200720012021 U CN 200720012021U CN 201024977 Y CN201024977 Y CN 201024977Y
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- China
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- screw thread
- adjusting base
- external sleeve
- valve holder
- basket
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a multi-functional cement injection well fixing device used for digging and completing the well during the oil field exploration and geological prospecting, consisting of an external sleeve, a valve holder, a valve body, a throttling plate, a press cover, a spring, a sealing ring, an adjusting base, a floating ball and a meshed basket. The upper part in the external sleeve is provided with the valve holder and connected with the valve holder through a screw thread, and the lower part of the valve holder is provided with the throttling plate which is seated on the step of the inner wall of the external sleeve, with the lower side of the throttling plate provided with the press cover. The inside of the valve holder is provided with the valve body, the lower part of which penetrates the central hole of the throttling hole and connected with the press cover through a screw thread. The center of the inside of the external sleeve is provided with the adjusting base and connected with the adjusting base through a screw thread, and the lower part of the external sleeve is provided with the meshed basket and connected with the meshed basket through a screw thread. A spring is arranged between the press cover and the adjusting base, and a sealing groove on the peripheral surface of the adjusting base is internally provided with a sealing ting, with the floating ball arranged between the adjusting base and the meshed basket. The device is simple in structure, convenient in use and reliable in work, and can overcome the effect of the U-shaped pipe during the pipe fixation, reduce the pollution to the oil layer and guarantee the quality of the well fixation.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for oil field development, the well cementation of geological prospecting drilling completion, belongs to drilling completion cementing tool class.
Background technology:
Cementing well is oil, the important procedure in geological prospecting drilling completion stage.At present, in the well cementing operation process, owing to adopt single ball-and-seat or nylon ball sealing relatively poor usually, when the well cementation termination of pumping cement paste often taking place flows backwards, build the pressure in the sleeve pipe to wait and coagulate, cause forming microannulus between sleeve pipe and the cement sheath, cause the annular space inter-zone commununation after bringing in, even the annular space blow-out.In addition, in the well cementation process, because the density of cement paste is greater than the density of drilling fluid, cement paste " free-falling ", make and return out discharge capacity greater than injecting discharge capacity, the part dead band appears in the pipe, cause and replace the drilling fluid initial stage to return out discharge capacity less than replacing into phenomenons such as discharge capacities, cause that the weak formation leakage cement paste of book is low to be returned or the irregular borehole cement paste is scurried adverse consequences such as groove, promptly produce cementing quality and very harmful " the U type tube effect " of oil reservoir, to this, owing to lack at present desirable instrument, adopt usually and annotate low-density cement mortar or reduce cement injection and overcome or alleviate this kind effect for methods such as drilling fluid initial stage discharge capacities.
The utility model content:
The purpose of this utility model is to provide a kind of can effectively overcome well cementation " U type tube effect ", help protecting oil reservoir, guarantee the multi-functional cementing well device of cementing quality.
The utility model is to realize like this.This kind water filling cementing unit is made up of overcoat, valve seat, valve body, choke block, gland, spring, sealing ring, adjustment seat, ball float, basket, the overcoat internal upper part is provided with valve seat and to be threaded, the valve seat below is provided with choke block, choke block is sat and is placed on the outer casing inner wall step, the choke block below is provided with gland, be provided with valve body in the valve seat, valve body lower end is passed the choke block mesopore and is connected with screw thread with gland; The interior middle part of overcoat is provided with adjustment seat and is connected with screw thread, and the bottom is provided with basket and is connected with screw thread, is provided with spring between gland and the adjustment seat, in the adjustment seat periphery seal groove sealing ring is housed, and is provided with ball float between adjustment seat and the basket.During use, predetermined well depth is arrived in this device tipping down in bunch tube.During the cementing well operation, utilize it not only can regulate area of passage control automatically and return out discharge capacity, overcome well cementation " U type tube effect ", reduce oil layer pollution and guarantee cementing quality, and owing to adopted bivalve to dam, realize waiting for worn-out mouthful and coagulate, can eliminate the microgap between sleeve pipe and the cement sheath, prevent the annular space blow-out, can also press demonstration by support plug Shi Xian Peng simultaneously, form the artificial bottom of a well.
The utility model is simple in structure, and is easy to use, and reliable operation utilizes it can effectively overcome well cementation " U type tube effect ", reduces oil layer pollution, guarantees cementing quality.
Description of drawings:
Accompanying drawing is a general structure schematic diagram of the present utility model.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of overcoat 1, valve seat 2, valve body 3, choke block 4, gland 5, spring 6, sealing ring 7, adjustment seat 8, ball float 9 and basket 10, its structure, assembled relation are as follows: overcoat 1 internal upper part is provided with valve seat 2 and to be threaded, valve seat 2 belows are provided with choke block 4, choke block 4 is sat and is placed on the overcoat 1 inwall step, choke block 4 belows are provided with gland 5, are provided with valve body 3 in the valve seat 2, and valve body 3 lower ends are passed choke block 4 mesopores and are connected with screw thread with gland 5; Overcoat 1 interior middle part is provided with adjustment seat 8 and is connected with screw thread, and the bottom is provided with basket and is connected with screw thread, is provided with spring 6 between gland 5 and the adjustment seat 8, in the adjustment seat 8 periphery seal grooves sealing ring is housed, and is provided with ball float 9 between adjustment seat 8 and the basket 10.Wherein, overcoat 1 is that a upper and lower end is respectively equipped with internal thread and externally threaded sleeve body, be respectively equipped with the screw thread that connects valve seat 2, adjustment seat 8 and basket 10 on its top, middle part, the bottom inner headed face, the top inner headed face is provided with the tapering that matches with valve seat 2 peripheries, and is provided with to sit and puts the step of choke block 4 usefulness.Valve body 3 is the round bar body of conical surface transition for the up big and down small centre of diameter, justifies seat surfaces in its top nose shape and the valve seat 2 and matches, and bottom round bar diameter and choke block 4 mesopores match, and the lower end has to be connected with gland 5 uses screw thread.Ball float 9 adopts the material such as nylon with sealing performance, also can be at spherome surface vulcanized rubber layer.Basket 10 adopts metal material to make, and is one to be provided with externally threaded disc, is evenly equipped with a plurality of circular holes on its support face, and also available many reinforcing bars are made support bracket.
Claims (1)
1. multi-functional cementing well device, by overcoat (1), valve seat (2), valve body (3), choke block (4), gland (5), spring (6), Mi Caiquan (7), adjustment seat (8), ball float (9) and basket (10) are formed, it is characterized in that: overcoat (1) internal upper part is provided with valve seat (2) and to be threaded, valve seat (2) below is provided with choke block (4), choke block (4) is sat and is placed on overcoat (1) the inwall step, choke block (4) below is provided with gland (5), be provided with valve body (3) in the valve seat (2), valve body (3) lower end is passed choke block (4) mesopore and is connected with screw thread with gland (5); The interior middle part of overcoat (1) is provided with adjustment seat (8) and is connected with screw thread, the bottom is provided with basket (10) and is connected with screw thread, be provided with spring (6) between gland (5) and the adjustment seat (8), in adjustment seat (8) the periphery seal groove sealing ring (7) is housed, is provided with ball float (9) between adjustment seat (8) and the basket (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200120210U CN201024977Y (en) | 2007-05-10 | 2007-05-10 | A multi-function concrete injection well fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200120210U CN201024977Y (en) | 2007-05-10 | 2007-05-10 | A multi-function concrete injection well fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024977Y true CN201024977Y (en) | 2008-02-20 |
Family
ID=39098835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200120210U Expired - Fee Related CN201024977Y (en) | 2007-05-10 | 2007-05-10 | A multi-function concrete injection well fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024977Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086941A (en) * | 2017-12-06 | 2018-05-29 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | Selective cementing unit |
| CN105804690B (en) * | 2014-12-30 | 2018-08-21 | 新疆中核天山铀业有限公司 | In-situ leaching process drilling inverse water mud device |
-
2007
- 2007-05-10 CN CNU2007200120210U patent/CN201024977Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804690B (en) * | 2014-12-30 | 2018-08-21 | 新疆中核天山铀业有限公司 | In-situ leaching process drilling inverse water mud device |
| CN108086941A (en) * | 2017-12-06 | 2018-05-29 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | Selective cementing unit |
| CN108086941B (en) * | 2017-12-06 | 2020-03-06 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | Selective well cementing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20110510 |