CN108643859A - Bleeder - Google Patents
Bleeder Download PDFInfo
- Publication number
- CN108643859A CN108643859A CN201810256502.9A CN201810256502A CN108643859A CN 108643859 A CN108643859 A CN 108643859A CN 201810256502 A CN201810256502 A CN 201810256502A CN 108643859 A CN108643859 A CN 108643859A
- Authority
- CN
- China
- Prior art keywords
- hole
- sliding sleeve
- ring cavity
- central tube
- bleeder
- 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.)
- Pending
Links
- 210000002445 nipple Anatomy 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 5
- 239000010779 crude oil Substances 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 9
- 238000005086 pumping Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009527 percussion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention provides a kind of bleeders, including：The central tube of first through hole is provided on side wall, the outer tube being set in outside central tube, it is formed with the ring cavity being connected with first through hole between central tube, it closes the top and bottom of ring cavity, second through-hole that is connected with ring cavity is provided on the side wall of outer tube, it is set in the sliding sleeve that central tube is outer and can be moved in ring cavity, when sliding sleeve is in first operating position, blocks the second through-hole so that first through hole can not be connected by ring cavity with the second through-hole；When sliding sleeve is in the second operating position, the closure to the second through-hole is released, to which first through hole is connected by ring cavity with the second through-hole.The bleeder draining of the embodiment of the present invention it is reliable and can be preferably suitable for high angle hole, horizontal well, super-viscous oil, high-solidifiability oil well.
Description
Technical field
The present invention relates to oil-gas mining technical field of tools more particularly to a kind of bleeders.
Background technology
The description of this part is only provided discloses relevant background information with the present invention, without constituting the prior art.
In pump detection and workover, it will usually connect bleeder on tubing string to realize draining, protect oily area environment.Wherein, it hits
Formula bleeder is hit to be widely used since it operates relatively simple.
The principle of hammering oil discharger is that input hits stick into oil pipe, and hollow let out is cut by the percussion for hitting stick
Oil pin is connected to oil pipe and oil jacket annular space by hollow draining pin, the purpose of draining is realized with this.
Due to the above-mentioned operation principle of hammering oil discharger, cause hammering oil discharger in certain more special hole condition conditions
Oil well in the application of such as high angle hole, horizontal well, super-viscous oil, high-solidifiability oil well there are problems that draining unreliability.Specifically
, high angle hole, horizontal well etc. cause shock stick falling speed to incur loss, hit stick since there are non-vertical well sections
Percussion be likely difficult to cut hollow draining pin；And super-viscous oil, high-solidifiability oil well etc. make to hit since pit shaft viscosity is larger
The whereabouts for hitting stick is obstructed, and percussion equally exists the problem of being difficult to cut hollow draining pin.
It should be noted that above to the introduction of technical background be intended merely to it is convenient to technical scheme of the present invention carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the present invention
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Invention content
Based on prior art defect above-mentioned, an embodiment of the present invention provides a kind of draining is reliable and can be preferably
Bleeder suitable for high angle hole, horizontal well, super-viscous oil, high-solidifiability oil well.
To achieve the goals above, the present invention provides the following technical solutions.
A kind of bleeder, including：Central tube is provided with first through hole on the side wall of the central tube；Be set in it is described in
Outer tube outside heart pipe is formed with the ring cavity being connected with the first through hole, the ring between the outer tube and the central tube
The top and bottom of chamber are closed, and are provided with the second through-hole on the side wall of the outer tube, second through-hole is connected with the ring cavity
It is logical；It is set in the sliding sleeve that the central tube is outer and can move in the ring cavity, the sliding sleeve is with the first operating position and the
Two operating positions；When the sliding sleeve is in first operating position, the sliding sleeve blocks second through-hole so that described
First through hole can not be connected by the ring cavity with second through-hole；When the sliding sleeve is in second operating position
When, the sliding sleeve releases the closure to second through-hole, to which the first through hole is logical with described second by the ring cavity
Hole is connected.
Preferably, further include top connection, the top connection be inserted into the upper end of the ring cavity and with the central tube and outer tube
It is fixedly connected, to block the upper end of the ring cavity.
Preferably, it is provided with first seal between the top connection and the outer tube.
Preferably, further include lower seal nipple, the lower seal nipple be inserted into the lower end of the ring cavity and with the center
Pipe is fixedly connected with outer tube, to block the lower end of the ring cavity.
Preferably, between the lower seal nipple and the central tube, and, the lower seal nipple and the outer tube it
Between be both provided with second seal.
Preferably, the height of the sliding sleeve be less than between second through-hole and the upper end of the lower seal nipple away from
From.
Preferably, the sliding sleeve is connected to the outer wall of the central tube by shear pin, so that the sliding sleeve is in institute
State the first operating position.
Preferably, when the shearing for being more than the shear pin into the crude oil pressure in the ring cavity through the first through hole
When intensity, the shear pin is cut, to make the sliding sleeve be moved to second work by first operating position
Position.
Preferably, between the sliding sleeve and the central tube, and, is both provided between the sliding sleeve and the outer tube
Three sealing elements.
Preferably, the lower end of the central tube exceeds the lower end of the outer tube, and the central tube is close to the outer wall of lower end
It is provided with external screw thread.
The bleeder of the embodiment of the present invention is moveable sliding by being arranged in the ring cavity that is formed between central tube and outer tube
Set, when the bleeder of the embodiment of the present invention is used in the environment such as high angle hole, horizontal well, super-viscous oil, high-solidifiability oil well that inspection to be needed to pump
When draining operation, highly pressurised liquid can be suppressed into connected central tube by ground pumping pipe string, highly pressurised liquid is logical
It crosses first through hole to enter in ring cavity, sliding sleeve is made to be transformed into the second operating position by the first operating position, to make the by ring cavity
One through-hole is connected with the second through-hole, and then the liquid in pumping pipe string passes sequentially through first through hole, ring cavity and the second through-hole
It lets out in oil jacket annular space, realizes draining, ensure pump detection and workover clean construction, protect well site environment.
It can be seen that the bleeder of the embodiment of the present invention is not by spies such as high angle hole, horizontal well, super-viscous oil, high-solidifiability oil wells
The limitation of different hole condition condition, draining are more reliable.
With reference to following description and accompanying drawings, the particular embodiment of the present invention is disclosed in detail, specifies the principle of the present invention
It can be in a manner of adopted.It should be understood that the embodiment of the present invention is not so limited in range.It is wanted in appended right
In the range of the spirit and terms asked, the embodiment of the present invention includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It is used in other embodiments, it is combined with the feature in other embodiments, or substitute the feature in other embodiments.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, the shape and proportional sizes etc. of each component in figure are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.In the accompanying drawings：
Fig. 1 is in structural schematic diagram when the first operating position for the sliding sleeve in the bleeder of the embodiment of the present invention；
Fig. 2 is in structural schematic diagram when the second operating position for the sliding sleeve in the bleeder of the embodiment of the present invention.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work, should all belong to guarantor of the present invention
The range of shield.
It should be noted that when element is referred to as " being set to " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the Listed Items of pass.
As depicted in figs. 1 and 2, an embodiment of the present invention provides a kind of bleeder, may include：Central tube 1, central tube
First through hole 101 is provided on 1 side wall；The outer tube 2 being set in outside central tube 1, be formed between outer tube 2 and central tube 1 with
The top and bottom of the ring cavity 201 that first through hole 101 is connected, ring cavity 201 are closed, and it is logical that second is provided on the side wall of outer tube 2
Hole 202, the second through-hole 202 are connected with ring cavity 201；It is set in the sliding sleeve 3 that central tube 1 is outer and can be moved in ring cavity 201, it is sliding
Set 3 has the first operating position and the second operating position；When sliding sleeve 3 is in the first operating position, sliding sleeve 3 blocks the second through-hole
202 so that first through hole 101 can not be connected by ring cavity 201 with the second through-hole 202；When sliding sleeve 3 is in the second operating position
When, sliding sleeve 3 releases the closure to the second through-hole 202, to which first through hole 101 is connected by ring cavity 201 with the second through-hole 202
It is logical.
The bleeder of the embodiment of the present invention, it is removable by being arranged in the ring cavity 201 that is formed between central tube 1 and outer tube 2
Dynamic sliding sleeve 3, when the bleeder of the embodiment of the present invention is used in the environment such as high angle hole, horizontal well, super-viscous oil, high-solidifiability oil well need
When examining pump draining operation, highly pressurised liquid, high pressure can be suppressed into connected central tube 1 by ground pumping pipe string
Liquid is entered by first through hole 101 in ring cavity 201, and sliding sleeve 3 is made to be transformed into the second operating position by the first operating position, to
First through hole 101 is set to be connected with the second through-hole 202 by ring cavity 201, and then the liquid in pumping pipe string passes sequentially through first
Through-hole 101, ring cavity 201 and the second through-hole 202 are let out in oil jacket annular space, realize draining, ensure pump detection and workover clean construction, are protected
Guide-well field environment.
It can be seen that the bleeder of the embodiment of the present invention is not by spies such as high angle hole, horizontal well, super-viscous oil, high-solidifiability oil wells
The limitation of different hole condition condition, draining are more reliable.
In the present embodiment, outer tube 2 is both ends open, in order to after it is set in outside central tube 1, make the ring cavity to be formed
201 upper and lower ends are closed, and top connection 4 can be inserted in the upper end of ring cavity 201, and (upper end of top connection 4 can be provided with outer
Screw thread is detachably connected with realizing with oil pipe), lower seal nipple 5, top connection 4 and lower seal nipple 5 can be inserted in lower end
Can be fixedly connected with central tube 1 and outer tube 2 by modes such as screw threads, to realize ring cavity 201 top and bottom closure.
It can be provided with first seal 6 between top connection 4 and outer tube 2, can be set between lower seal nipple 5 and outer tube 2
It is equipped with second seal 7, between sliding sleeve 3 and central tube 1, and, third sealing element can be provided between sliding sleeve 3 and outer tube 2
8.By the way that first seal 6, second seal 7 and third sealing element 8 is arranged, can seal top connection 4, lower seal nipple 5 with
Seam between central tube 1 and outer tube 2 and between sliding sleeve 3 and central tube 1, outer tube 2, and then realize to the close of ring cavity 201
Envelope avoids the deficiency that causes to build the pressure because poorly sealed of ring cavity 201 from causing sliding sleeve 3 is irremovable to happen.
In order to which when sliding sleeve 3 is in the second operating position, sliding sleeve 3 is unobstructed to the second through-hole 202, and the height of sliding sleeve 3 is excellent
Choosing is less than the distance between the upper end of the second through-hole 202 and lower seal nipple 5.In this way, when sliding sleeve 3 is in the second operating position,
And the lower end of sliding sleeve 3 can be with contact at the upper end of lower seal nipple 5, and the upper end of sliding sleeve 3 is under the second through-hole 202
Draining flow improves to greatest extent so as to which the second through-hole 202 to be fully exposed in side, improves draining efficiency.
In one embodiment, sliding sleeve 3 can be connected to the outer wall of central tube 1 by shear pin 9, so that at sliding sleeve 3
In the first operating position.When the shear strength for being more than shear pin 9 into the crude oil pressure in ring cavity 201 through first through hole 101
When, shear pin 9 is cut, and to which sliding sleeve 3 moves down, the second operating position is moved to by the first operating position.
Further, the lower end of central tube 1 preferably exceeds the lower end of outer tube 2, and outer wall of the central tube 1 close to lower end can be with
It is provided with external screw thread, is detachably connected with oil pipe with realizing, formation pumping pipe string.
The draining principle of bleeder of the present invention is described below.
When pump detection and workover, rod string is first played out, highly pressurised liquid is beaten into pumping pipe string using pressure testing vehicle and is built the pressure, high pressure
Liquid enters through first through hole 101 in ring cavity 201.When building the pressure to shear strength more than shear pin 9,9 quilt of shear pin
It cuts, sliding sleeve 3 moves down, and sliding sleeve 3 is made to move to the second operating position by the first operating position.Liquid in pumping pipe string passes through
First through hole 101, ring cavity 201 and the second through-hole 202 are let out in oil jacket annular space, to realize draining, ensure pump detection and workover cleaning
Construction.
It should be noted that in the description of the present invention, term " first ", " second " etc. are used for description purposes only and distinguish
Between the two and sequencing is not present in similar object, can not be interpreted as indicating or implying relative importance.In addition,
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except the example provided all will be apparent for a person skilled in the art
's.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to preceding claims and these
The full scope of the equivalent that claim is possessed determines.For comprehensive purpose, all articles and reference include patent
The disclosure of application and bulletin is all by reference to being incorporated herein.Appointing for theme disclosed herein is omitted in preceding claims
Where face is not intended to abandon the body matter, also should not be considered as applicant and the theme is not thought of as to disclosed hair
A part for bright theme.
Claims (10)
1. a kind of bleeder, which is characterized in that including：
Central tube is provided with first through hole on the side wall of the central tube；
The outer tube being set in outside the central tube is formed between the outer tube and the central tube and is connected with the first through hole
The top and bottom of logical ring cavity, the ring cavity are closed, and the second through-hole, second through-hole are provided on the side wall of the outer tube
It is connected with the ring cavity；
It is set in the sliding sleeve that the central tube is outer and can move in the ring cavity, the sliding sleeve is with the first operating position and the
Two operating positions；When the sliding sleeve is in first operating position, the sliding sleeve blocks second through-hole so that described
First through hole can not be connected by the ring cavity with second through-hole；When the sliding sleeve is in second operating position
When, the sliding sleeve releases the closure to second through-hole, to which the first through hole is logical with described second by the ring cavity
Hole is connected.
2. bleeder as described in claim 1, which is characterized in that further include top connection, the ring cavity is inserted into the top connection
Upper end and be fixedly connected with the central tube and outer tube, to which the upper end of the ring cavity be blocked.
3. bleeder as claimed in claim 2, which is characterized in that it is close to be provided with first between the top connection and the outer tube
Sealing.
4. bleeder as described in claim 1, which is characterized in that further include lower seal nipple, the lower seal nipple is inserted into
The lower end of the ring cavity is simultaneously fixedly connected with the central tube and outer tube, to block the lower end of the ring cavity.
5. bleeder as claimed in claim 4, which is characterized in that between the lower seal nipple and the central tube, and,
It is both provided with second seal between the lower seal nipple and the outer tube.
6. bleeder as claimed in claim 4, which is characterized in that the height of the sliding sleeve be less than second through-hole with it is described
The distance between the upper end of lower seal nipple.
7. bleeder as described in claim 1, which is characterized in that the sliding sleeve is connected to the central tube by shear pin
Outer wall so that the sliding sleeve is in first operating position.
8. bleeder as claimed in claim 7, which is characterized in that when through the first through hole enter the ring cavity in crude oil
When pressure is more than the shear strength of the shear pin, the shear pin is cut, to make the sliding sleeve by described first
Operating position is moved to second operating position.
9. bleeder as described in claim 1, which is characterized in that between the sliding sleeve and the central tube, and, the cunning
It is both provided with third sealing element between set and the outer tube.
10. bleeder as described in claim 1, which is characterized in that the lower end of the central tube exceeds the lower end of the outer tube,
And outer wall of the central tube close to lower end is provided with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256502.9A CN108643859A (en) | 2018-03-27 | 2018-03-27 | Bleeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256502.9A CN108643859A (en) | 2018-03-27 | 2018-03-27 | Bleeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108643859A true CN108643859A (en) | 2018-10-12 |
Family
ID=63744676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810256502.9A Pending CN108643859A (en) | 2018-03-27 | 2018-03-27 | Bleeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108643859A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137712Y (en) * | 1992-09-17 | 1993-07-07 | 北京海淀十达油气科技开发公司 | Drip |
| CN201650209U (en) * | 2010-01-15 | 2010-11-24 | 中国石油化工集团公司 | Automatic shutdown switch for cementing of horizontal well |
| CN203230386U (en) * | 2013-03-28 | 2013-10-09 | 中国石油天然气股份有限公司 | Outer sliding sleeve type oil drain device |
| US20170067315A1 (en) * | 2012-04-27 | 2017-03-09 | Tejas Research & Engineering, Llc | Dual barrier injection valve with a variable orifice |
-
2018
- 2018-03-27 CN CN201810256502.9A patent/CN108643859A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137712Y (en) * | 1992-09-17 | 1993-07-07 | 北京海淀十达油气科技开发公司 | Drip |
| CN201650209U (en) * | 2010-01-15 | 2010-11-24 | 中国石油化工集团公司 | Automatic shutdown switch for cementing of horizontal well |
| US20170067315A1 (en) * | 2012-04-27 | 2017-03-09 | Tejas Research & Engineering, Llc | Dual barrier injection valve with a variable orifice |
| CN203230386U (en) * | 2013-03-28 | 2013-10-09 | 中国石油天然气股份有限公司 | Outer sliding sleeve type oil drain device |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |
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| RJ01 | Rejection of invention patent application after publication |