CN2871805Y - Positive-punch and reverse-circulation sand-washing tool - Google Patents
Positive-punch and reverse-circulation sand-washing tool Download PDFInfo
- Publication number
- CN2871805Y CN2871805Y CN 200620000790 CN200620000790U CN2871805Y CN 2871805 Y CN2871805 Y CN 2871805Y CN 200620000790 CN200620000790 CN 200620000790 CN 200620000790 U CN200620000790 U CN 200620000790U CN 2871805 Y CN2871805 Y CN 2871805Y
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- China
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- packer
- sand washing
- responsible
- steel body
- instrument
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Abstract
The utility model discloses a normal washing reverse circulation sand washing tool, which comprises a main steel fitting and a packer; the packer is fixed on the external mid-position of the main steel fitting, the maximum outside diameter is equal to the inside diameter of the outer bushing, the inside diameter is equal to outside diameter of the main steel fitting; filling pipe and liquid discharge pipe extending inwards are arranged on two end faces of the main steel fitting, the filling pipe is not communicated with liquid discharge pipe, and the depth exceeds the distance from initial end face to far end face of the packer, an inlet is arranged on external wall of the filling pipe, the inlet is arranged above the packer, an outlet is arranged on external wall of the liquid discharge pipe, the outlet is arranged below the packer. The utility model combines advantages of normal and reverse circulation sand washing, increases return velocity, has large impact velocity and strength, so as to save sand washing time, increase work efficiency of sand washing, reduce hidden trouble of potential underground accident due to desilting rod sticking.
Description
Technical field
The utility model relates to a kind of sand flushing tool, more particularly, relates to the reverse circulating sand flushing tool of a kind of square impact.
Background technology
Shaking out is the common problem that exists in the thickened oil recovery process, therefore often will carry out well-flushing sand washing operation in oil well repairing operation.In the prior art, the sand washing method has dual mode, and a kind of is the positive sand washing of direct circulation oil pipe, i.e. flushing liquor sand setting at the bottom of the oil pipe flushing manhole, broken up be in suspended state sand grains along returning to well head on the annular space of oil pipe and sleeve pipe.The advantage of positive sand washing is that impact force greatly, is easily broken up sand plug, and still, the subject matter of existence is, because slow in the annular space upward velocity of oil pipe and sleeve pipe, there is the hidden danger of sand setting bit freezing in prop-carrying capacity low (sand free settling), and the sand washing activity duration is long, inefficiency.Another kind is inverse circular sand washing adapter (taking sand), be that flushing liquor enters shaft bottom sand washing (taking sand) through the annular space of oil pipe and sleeve pipe, sand grains returns to well head in oil pipe, though have higher speed and the prop-carrying capacity returned, little to the impact force of sand setting, be difficult for the low sand plug that breaks up.
Summary of the invention
The purpose of this utility model provides a kind of square impact inverse circular sand washing adapter instrument, and this instrument had both improved the advantage combination of positive inverse circular sand washing adapter and returned speed, had bigger impact velocity and dynamics again.
The utility model is realized by following technical proposals:
A kind of square impact inverse circular sand washing adapter instrument comprises: the steel body is responsible for part and packer; Described packer is fixedly mounted on the outside middle part that the steel body is responsible for part, and its maximum outside diameter equates that with the internal diameter of the sleeve pipe that is installed in its outside internal diameter equates with the external diameter that the steel body is responsible for part; The both ends of the surface that the steel body is responsible for part extended internally respectively liquid injection pipe and discharging tube, described liquid injection pipe and discharging tube are not communicated with mutually, and the degree of depth is all greater than the distance of initial end face to the packer distal face, described liquid injection pipe outer wall is provided with inlet, and described inlet is arranged on the packer upside, described discharging tube outer wall is provided with leakage fluid dram, and described leakage fluid dram is arranged on the packer downside.
Further, the termination external surface of described steel body person in charge part is the conical surface.
Further, this instrument also comprises two tubing couplings, and described tubing coupling is connected with the termination that the steel body is responsible for part.
Further, the inner surface of described tubing coupling is the conical surface.
Further, described steel body is responsible for the part lateral surface, packer respectively is provided with a rigidity centralizer in both sides up and down, and the outside dimension of described rigidity centralizer is less than the outside dimension of described packer.
Further, described steel body is responsible for part lateral surface middle part and is provided with one or one with upper groove body, is provided with sealing ring in the described cell body.
Compared with prior art, a kind of square impact inverse circular sand washing adapter instrument that the utility model proposes, combine the advantage of positive inverse circular sand washing adapter, both improved and returned speed, have bigger impact velocity and dynamics again, save the sand-flushing time thus, improved the sand washing operating efficiency, and reduced the down-hole accident hidden danger of sand setting bit freezing.
Description of drawings
Fig. 1 is the structural representation of a kind of square impact inverse circular sand washing adapter of the utility model specific embodiment tool applications.
The specific embodiment
The utility model is further introduced below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
With reference to shown in Figure 1, the square impact inverse circular sand washing adapter instrument of sand washing operation is responsible for part 1 by the steel body and packer 2 two parts are formed, packer 2 is a rubber parts, circulus, be fixedly mounted on the steel body and be responsible for the outside middle part of part 1, its maximum outside diameter equates that with the internal diameter of sleeve pipe 5 internal diameter and steel body are responsible for the external shaft of part 1 to respective outer side edges, is used to isolate the annular space between steel body person in charge's part 1 and the sleeve pipe 5.The steel body is responsible for part and all can be connected with tubing coupling 3 at two ends about in the of 1, extend with the increase of satisfying the sand washing depth of implements and to connect the length of oil pipe, for easy for installation, the inner surface that the steel body is responsible for part 1 two ends external surface and tubing coupling 3 all can be set to cone structure.The lower surface that the steel body is responsible for part 1 has extended upward liquid injection pipe 11, and its degree of depth is greater than the distance of this end face to packer 2 upper surfaces, and the outer wall of liquid injection pipe 11 is provided with an inlet 111, and this inlet 111 is positioned at the upside of packer 2; The upper surface that the steel body is responsible for part 1 is extended with discharging tube 12 downwards, and its degree of depth is greater than the distance of this end face to packer 2 lower surfaces, and the outer wall of discharging tube 12 is provided with a leakage fluid dram 121, and this leakage fluid dram 121 is positioned at the downside of packer 2; Liquid injection pipe 11 and discharging tube 12 are not communicated with mutually.
In order to keep square impact inverse circular sand washing adapter instrument to have better stability, can be responsible for part 1 lateral surface at the steel body and increase by two rigidity centralizers 4, be separately positioned on the both sides up and down of packer 2, but the physical dimension of rigidity centralizer 4 is less than the external diameter maximum size of packer 2.
For the seal that guarantees to cooperate between steel body person in charge's part 1 and the packer 2, can be in its cooperation place, the lateral surface that the steel body is responsible for part 1 adds some open slots, and the airtight circle 6 of O type of suitable dimension is set in the groove.
The course of work when utilizing this instrument to carry out sand washing is as follows:
Flushing liquor enters the steel body be responsible for annular space between part 1 and the sleeve pipe 5 after, be subjected to the restriction of packer 2, be forced to enter in the liquid injection pipe 11 through the inlet 111 of square impact inverse circular sand washing adapter instrument, flow out at a high speed from the bottom, in the mode of square impact the shaft bottom sand plug is broken up; The flushing liquor of taking sand is subjected to the restriction of packer 2 equally when last returning, be forced to enter in the discharging tube 12 through the leakage fluid dram 121 of square impact inverse circular sand washing adapter instrument, returns to well head (ground) with upward velocity faster then.
Claims (6)
1, a kind of square impact inverse circular sand washing adapter instrument comprises: the steel body is responsible for part, and it is characterized in that: this instrument also comprises packer; Described packer is fixedly mounted on the outside middle part that the steel body is responsible for part, and its maximum outside diameter equates that with the internal diameter of the sleeve pipe that is installed in its outside internal diameter equates with the external diameter that the steel body is responsible for part; The both ends of the surface that the steel body is responsible for part extended internally respectively liquid injection pipe and discharging tube, described liquid injection pipe and discharging tube are not communicated with mutually, and the degree of depth is all greater than the distance of initial end face to the packer distal face, described liquid injection pipe outer wall is provided with inlet, and described inlet is arranged on the packer upside, described discharging tube outer wall is provided with leakage fluid dram, and described leakage fluid dram is arranged on the packer downside.
2, a kind of square impact inverse circular sand washing adapter instrument as claimed in claim 1 is characterized in that: the termination external surface that described steel body is responsible for part is the conical surface.
3, a kind of square impact inverse circular sand washing adapter instrument as claimed in claim 1, it is characterized in that: this instrument also comprises two tubing couplings, described tubing coupling is connected with the termination that the steel body is responsible for part.
4, a kind of square impact inverse circular sand washing adapter instrument as claimed in claim 3, it is characterized in that: the inner surface of described tubing coupling is the conical surface.
5, a kind of square impact inverse circular sand washing adapter instrument as claimed in claim 1, it is characterized in that: described steel body is responsible for the part lateral surface, packer respectively is provided with a rigidity centralizer in both sides up and down, and the outside dimension of described rigidity centralizer is less than the outside dimension of described packer.
6, a kind of square impact inverse circular sand washing adapter instrument as claimed in claim 1 is characterized in that: described steel body is responsible for part lateral surface middle part and is provided with one or one with upper groove body, is provided with sealing ring in the described cell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620000790 CN2871805Y (en) | 2006-01-18 | 2006-01-18 | Positive-punch and reverse-circulation sand-washing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620000790 CN2871805Y (en) | 2006-01-18 | 2006-01-18 | Positive-punch and reverse-circulation sand-washing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2871805Y true CN2871805Y (en) | 2007-02-21 |
Family
ID=37740151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620000790 Expired - Fee Related CN2871805Y (en) | 2006-01-18 | 2006-01-18 | Positive-punch and reverse-circulation sand-washing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2871805Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975037A (en) * | 2010-09-26 | 2011-02-16 | 中国石油化工股份有限公司 | Method and device for conversing direct and reverse circulations of workover fluid in oil well |
| CN102322232A (en) * | 2011-08-26 | 2012-01-18 | 中国石油天然气股份有限公司 | Underground sand washing pipe column and sand washing method |
| CN107191146A (en) * | 2017-07-18 | 2017-09-22 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas sand clean out pipe string and its sand washing method |
| CN109339723A (en) * | 2018-11-07 | 2019-02-15 | 大庆市中航石油机械制造有限公司 | Protection oil reservoir formula continuous sand flushing takes sand device |
-
2006
- 2006-01-18 CN CN 200620000790 patent/CN2871805Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975037A (en) * | 2010-09-26 | 2011-02-16 | 中国石油化工股份有限公司 | Method and device for conversing direct and reverse circulations of workover fluid in oil well |
| CN102322232A (en) * | 2011-08-26 | 2012-01-18 | 中国石油天然气股份有限公司 | Underground sand washing pipe column and sand washing method |
| CN102322232B (en) * | 2011-08-26 | 2013-11-06 | 中国石油天然气股份有限公司 | Underground sand washing pipe column and sand washing method |
| CN107191146A (en) * | 2017-07-18 | 2017-09-22 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas sand clean out pipe string and its sand washing method |
| CN107191146B (en) * | 2017-07-18 | 2019-04-12 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas sand clean out pipe string and its sand washing method |
| CN109339723A (en) * | 2018-11-07 | 2019-02-15 | 大庆市中航石油机械制造有限公司 | Protection oil reservoir formula continuous sand flushing takes sand 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: 20070221 Termination date: 20140118 |