CN106121590B - Radial level drilling windowing filter back flush apparatus - Google Patents
Radial level drilling windowing filter back flush apparatus Download PDFInfo
- Publication number
- CN106121590B CN106121590B CN201610483017.6A CN201610483017A CN106121590B CN 106121590 B CN106121590 B CN 106121590B CN 201610483017 A CN201610483017 A CN 201610483017A CN 106121590 B CN106121590 B CN 106121590B
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- CN
- China
- Prior art keywords
- inner cylinder
- valve body
- wall
- designed
- righting sleeve
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
Abstract
The present invention relates to oil field radial level drilling technique field, more particularly to a kind of radial level drilling windowing filter back flush apparatus.The valve body upper end of the device is threadedly coupled with righting sleeve lower end, valve body lower end is designed with lower contact, valve inner is mounted with inner cylinder, multiple flowing holes are evenly equipped with inner cylinder side wall, the sap cavity of annular space is formed between inner tank theca and valve interior wall, inner cylinder is internally provided with spool, and spool lower end is designed to be able to match with the valve interior wall conical surface cone of sealing, valve core upper sleeve is equipped with spring, and spring upper end is withstood on inner cylinder upper interior end face.The present invention is realized can just clean well inwardly opened window filter without acting tubing string, easy to operate, not influence normal construction operation, greatly improve work efficiency, shorten the activity duration, reduce operating cost and the labor intensity of worker.
Description
Technical field：
The present invention relates to oil field radial level drilling technique field, more particularly to a kind of radial level drilling windowing filter
Back flush apparatus.
Background technology：
In petroleum gas field, the application of radial level drilling technique is one and effectively recovers or improve single well productivity
Well stimulation.In operation, window opening tool cuts casing under high-pressure hydraulic driving and realizes windowing, subsequent microbit connection
Opening is driven through in high-pressure hydraulic transmit the drilling of the pressure of the drill and moment of torsion realization to stratum on flexible axle.Finally in different layers
On position or same layer position horizontal level different angle, the eyelet of certain length is drilled out, establishes oil gas circulation road, increase draining face
Product, realizes volume increase.
No matter open a window in operation technique or stratum is crept into, be required for high-pressure hydraulic to drive, the window opening tool and ground of underground
Layer boring means is easily blocked by impurity and causes tool damage.To ensure the cleaning of water quality, the protection to window opening tool is realized,
A windowing filter is connected at an upper portion thereof.In reality, since tube inner wall is there are the silt carried in greasy dirt, iron rust or water,
Moved down rapidly under high-pressure hydraulic driving, cause windowing filter easily to block after a period of operation, ground pump pressure
Drastically raise, operation is forced to stop.In production after situation generation, solution has been flowline and downhole tool, on ground
After face cleaning filter, then oil pipe and instrument sequentially transferred into shaft bottom.This method has needed tubing string, and activity duration length, increases
Add the labor intensity and operating cost of operating personnel.
The content of the invention：
, should the technical problem to be solved in the present invention is to provide a kind of radial level drilling windowing filter back flush apparatus
Device is realized can just clean well inwardly opened window filter without acting tubing string, easy to operate, not influence normally to apply
Work industry, greatly improves work efficiency, shortens the activity duration, reduces operating cost and the labor intensity of worker.Overcome existing
Windowing filter has needed tubing string to be cleaned after blocking, and the activity duration is grown, increase the labor intensity of operating personnel with
Operating cost deficiency.
The technical solution used in the present invention is：A kind of radial level drilling windowing filter back flush apparatus, including
Valve body and righting sleeve；Valve body upper end is threadedly coupled with righting sleeve lower end, and valve body lower end is designed with lower contact, valve inner peace
Dress is fixed with inner cylinder, and multiple flowing holes are evenly equipped with inner cylinder side wall, and the sap cavity of annular space is formed between inner tank theca and valve interior wall,
Inner cylinder is internally provided with spool, and spool lower end is designed to be able to match with the valve interior wall conical surface cone of sealing, valve core upper sleeve dress
There is spring, spring upper end is withstood on inner cylinder upper interior end face, and righting sleeve upper end is designed with top connection, righting sleeve middle part screw thread
Middle stream pipe nipple is connected with, middle stream pipe nipple is internally formed throttling chamber, throttling chamber and the mainstream inside inner cylinder by righting sleeve center
Road is connected, and is symmetrically installed with two ball-and-seats I on middle stream pipe nipple side wall, the high-pressure fluid for the intracavitary that throttles being capable of translateral list
Stream valve I flows out, and is provided with nozzle on the righting sleeve inner wall of middle stream pipe nipple upper end, nozzle upper end is designed to nozzle, outside nozzle
Ball-and-seat II and ball-and-seat III are symmetrically installed between wall and righting sleeve inner wall.
The beneficial effects of the invention are as follows：The present invention need not act tubing string and just well inwardly opened window filter can be cleaned,
It is easy to operate, normal construction operation is not influenced, greatly improves work efficiency, shortens the activity duration, reduces operating cost and work
The labor intensity of people.
Brief description of the drawings：
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure diagram of the present invention.
Embodiment：
As shown in Figure 1, a kind of radial level drilling windowing filter back flush apparatus, including valve body 1 and righting sleeve
7；1 upper end of valve body is threadedly coupled with 7 lower end of righting sleeve, and 1 lower end of valve body is designed with lower contact 17, and the installation of the inside of valve body 1 is fixed
There is inner cylinder 6,6 lower end of inner cylinder is against on 1 conical surface of inboard wall of valve body, and 6 upper end of inner cylinder is withstood on 7 lower face of righting sleeve, 6 side wall of inner cylinder
On be evenly equipped with multiple flowing holes 5, the sap cavity 16 of annular space is formed between 1 inner wall of 6 outer wall of inner cylinder and valve body, inner cylinder 6 is internally provided with valve
Core 4,4 lower end of spool are designed to be able to match with 1 conical surface of inboard wall of valve body the cone 2 of sealing, and spring 3, bullet are set with spool 4
3 upper end of spring is withstood on 6 upper interior end face of inner cylinder, and 7 upper end of righting sleeve is designed with top connection 18, and 7 middle part screw thread of righting sleeve connects
Middle stream pipe nipple 14 is connected to, middle stream pipe nipple 14 is internally formed throttling chamber 13, by righting sleeve 7 inside throttle chamber 13 and inner cylinder 6
The sprue 15 of the heart is connected, and is symmetrically installed with two ball-and-seats I 8 on middle stream 14 side wall of pipe nipple, the high-pressure spray to throttle in chamber 13
Body can translateral ball-and-seat I 8 flow out, nozzle 11, nozzle 11 are installed on 7 inner wall of righting sleeve of 14 upper end of middle stream pipe nipple
Upper end is designed to nozzle 10, and ball-and-seat II 9 and ball-and-seat III are symmetrically installed between 7 inner wall of 11 outer wall of nozzle and righting sleeve
12。
In use, the top connection 18 of the present invention is connected with windowing filter, lower contact 17 connects window opening tool.Normally applying
In man-hour, for high-pressure fluid downlink by top connection 18, segment fluid flow reaches throttling chamber 13 after nozzle 10 flows through through nozzle 11, another
Partial high pressure fluid is gone downwards to up to throttling chamber 13 after flowing through ball-and-seat II 9 and ball-and-seat III 12.Spool 4 is in spring 3 and high-pressure spray
Under the collective effect of body so that cone 2 is fitted tightly on 1 conical surface of inboard wall of valve body.Then the high-pressure fluid to throttle in chamber 13 is difficult
With from 15 downlink of sprue, but translateral ball-and-seat I 8 flows out, and goes downwards to up to window opening tool, leads to from the bridge-type of window opening tool
Enter in road, realize casing sidetracking.
After the strainer screen that opens a window blocks, ground pump pressure display drastically raises, and channel is suppressed in well head adjustment fluid, from
Oil jacket annular space squeezes into high-pressure fluid, and fluid enters out of window opening tool runner, above backflows through lower contact 17, open-top cone 2, compression
Spring 3, spool 4 move up, and after fluid flows through the flowing hole 5 on sap cavity 16 and inner cylinder 6, uplink reaches throttling by sprue 15
Chamber 13.Since ball-and-seat II 9 and ball-and-seat III 12 are closed, high-pressure fluid forms high-pressure jet, punching after nozzle 11, nozzle 10
Wash windowing strainer screen.Tamper leaves strainer, and ground pump pressure display declines, and persistently suppresses a period of time, tamper is in oil
Well head discharge is gone upward in pipe, de-plugging is completed.
It is understood that above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to this
The described technical solution of inventive embodiments, it will be understood by those of ordinary skill in the art that, still the present invention can be carried out
Modification or equivalent substitution, to reach identical technique effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (1)
1. a kind of radial level drilling windowing filter back flush apparatus, including valve body (1) and righting sleeve (7)；Its feature
It is：Valve body (1) upper end is threadedly coupled with righting sleeve (7) lower end, and valve body (1) lower end is designed with lower contact (17), valve body (1)
Inside is mounted with inner cylinder (6), and multiple flowing holes (5) are evenly equipped with inner cylinder (6) side wall, and inner cylinder (6) outer wall is interior with valve body (1)
The sap cavity (16) of annular space is formed between wall, inner cylinder (6) is internally provided with spool (4), and spool (4) lower end is designed to be able to and valve body
(1) conical surface of inboard wall matches the cone (2) of sealing, spring (3) is set with spool (4), spring (3) upper end withstands on inner cylinder (6)
On upper interior end face, righting sleeve (7) upper end is designed with top connection (18), and it is short that middle stream is threaded with the middle part of righting sleeve (7)
Save (14), middle stream pipe nipple (14) is internally formed throttling chamber (13), and throttling chamber (13) inside inner cylinder (6) with passing through righting sleeve (7)
The sprue (15) at center is connected, and two ball-and-seats I (8), throttling chamber (13) are symmetrically installed with middle stream pipe nipple (14) side wall
Interior high-pressure fluid can the outflow of translateral ball-and-seat I (8), pacify on righting sleeve (7) inner wall of middle stream pipe nipple (14) upper end
Equipped with nozzle (11), nozzle (11) upper end is designed to nozzle (10), right between nozzle (11) outer wall and righting sleeve (7) inner wall
Title is provided with ball-and-seat II (9) and ball-and-seat III (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610483017.6A CN106121590B (en) | 2016-06-28 | 2016-06-28 | Radial level drilling windowing filter back flush apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610483017.6A CN106121590B (en) | 2016-06-28 | 2016-06-28 | Radial level drilling windowing filter back flush apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106121590A CN106121590A (en) | 2016-11-16 |
| CN106121590B true CN106121590B (en) | 2018-05-01 |
Family
ID=57265793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610483017.6A Active CN106121590B (en) | 2016-06-28 | 2016-06-28 | Radial level drilling windowing filter back flush apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106121590B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729877B (en) * | 2018-05-23 | 2020-04-21 | 中国石油大学(华东) | Radial horizontal well reversing short section underground cleaning device |
| US11421494B1 (en) | 2021-03-29 | 2022-08-23 | Saudi Arabian Oil Company | Filter tools and methods of filtering a drilling fluid |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069285A (en) * | 1988-12-14 | 1991-12-03 | Nuckols Thomas E | Dual wall well development tool |
| NO306027B1 (en) * | 1997-10-27 | 1999-09-06 | Testtech Services As | Apparatus for removing sand in an underwater well |
| CN100429379C (en) * | 2006-09-28 | 2008-10-29 | 大庆油田有限责任公司 | Stainless steel seepage scale removal blowdown backwash fine filter for flooding well |
| CN102373902A (en) * | 2011-11-10 | 2012-03-14 | 西安瑞捷生物科技有限公司 | Novel jet flow well flushing device |
| CN204804772U (en) * | 2015-07-21 | 2015-11-25 | 中国石油化工股份有限公司 | Automatic sand removing device of bottom single current valve |
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2016
- 2016-06-28 CN CN201610483017.6A patent/CN106121590B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106121590A (en) | 2016-11-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201023 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right |