CN109184620A - Oil pipe continuous sand flushing system - Google Patents
Oil pipe continuous sand flushing system Download PDFInfo
- Publication number
- CN109184620A CN109184620A CN201811144371.1A CN201811144371A CN109184620A CN 109184620 A CN109184620 A CN 109184620A CN 201811144371 A CN201811144371 A CN 201811144371A CN 109184620 A CN109184620 A CN 109184620A
- Authority
- CN
- China
- Prior art keywords
- sand
- clean out
- out pipe
- pipe
- outer tube
- 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.)
- Granted
Links
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
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Abstract
The invention belongs to Sand-washing in Oilfield equipment fields, more particularly to a kind of oil pipe continuous sand flushing system, including sand-flushing pipe column, sand-washing pen point, casing and four-way junction of casing, the sand-flushing pipe column is formed by connecting by more sand clean out pipe, the four-way junction of casing upper end is connected with sand clean out pipe self-sealing device, the sealed core of the annular for sealing sand clean out pipe is equipped in the sand clean out pipe self-sealing device, sand clean out pipe self-sealing device lower end is fixedly connected with sand clean out pipe outer tube, sand washing valve module is serially connected between two sand clean out pipe of topmost, bimetallic tube is connected between the sand-flushing pipe column and sand-washing pen point, the bimetallic tube includes inner tube and outer tube, outer tube outer upper end, lower end is respectively equipped with the upper unidirectional leather cup and lower unidirectional leather cup of isolation sand cleaning fluid.The contact for the oilbearing stratum that the invention avoids sand cleaning fluids is low with pressure, penetration is strong, while can make sand cleaning fluid continuously uninterruptedly to underground sand-wash.
Description
Technical field
The invention belongs to Sand-washing in Oilfield equipment field more particularly to a kind of oil pipe continuous sand flushing systems.
Background technique
Sand production has seriously affected the normal production of oil well, carries out desanding frequently with sand washing process at present, i.e., with high speed
The liquid of flowing breaks up shaft bottom sand plug, and borrows the circulation ability returned in liquid stream circulation, takes the sand broken up out of ground, from
And the product sand in shaft bottom is removed, restore and improve well yield.
Currently, common sand washing mode is using pump truck and tap cooperation sand washing, method is first to sweep away a single oil
Pipe, circulation a period of time, allow sand grains in casing on return a distance after, then stop pump truck circulation, propose with tap
Then single oil pipe, the oil pipe of rapid tripping in one intensification connect the single oil pipe with tap, under turn on pump circulation continues again
Punching, switch deepen oil pipe during, since pump truck stops recycling, the sand grains in casing in infall process, because
This requirement switch single oil tube be must rapidly, otherwise sand grains sinking sand plug oil pipe the latter sand pipe laying column, is caused more serious
Sand plug, sand card accident.Therefore, it is necessary to design a kind of continuous sand flushing device, caused by solving due to the grains of sand after the termination of pumping settle
Tubing string sand buries problem.
In addition, during sand washing, sand cleaning fluid can be inhaled by oil reservoir for the oilbearing stratum low for pressure, penetration is strong
It receives, causing sand cleaning fluid to return, drainage speed is small, and prop-carrying capacity is poor, the effect of desanding is not achieved, or even there is a situation where destroy oil reservoir.Institute
When, desanding to need that desanding liquid is made to avoid the oilbearing stratum that pressure is low, penetration is strong.But it not may be implemented in the prior art
The relevant device of above-mentioned function.
Summary of the invention
The present invention provides a kind of oil pipe continuous sand flushing system, can make sand cleaning fluid continuously uninterruptedly to underground sand-wash, again
Avoid the contact for the oilbearing stratum that sand cleaning fluid is low with pressure, penetration is strong.
Present invention provide the technical scheme that a kind of oil pipe continuous sand flushing system, including sand-flushing pipe column, sand-washing pen point and set
Pipe four-way, the four-way junction of casing lower end are connected on casing, and the sand-flushing pipe column is formed by connecting by more sand clean out pipe, sand washing
Tubing string lower end is connected with sand-washing pen point, it is characterised in that: the four-way junction of casing upper end is connected with sand clean out pipe self-sealing device, described
Sand clean out pipe self-sealing device in be equipped with for seal sand clean out pipe annular sealed core, sand clean out pipe self-sealing device side wall bypass have feed liquor
Pipe, the liquid outlet of inlet tube are located at the lower section of seal point between sealed core and sand clean out pipe self-sealing device inner wall, under sand clean out pipe self-sealing device
End is fixedly connected with sand clean out pipe outer tube, and sand clean out pipe outer tube lower part is inserted into casing after passing through four-way junction of casing, sand clean out pipe housing
There are the annular space A for crossing liquid between pipe and casing, and the sand-flushing pipe column top is after sand clean out pipe outer tube from punching
The sealed core of sandpipe self-sealing device is pierced by, most upper there are the annular space B for crossing liquid between sand-flushing pipe column and sand clean out pipe outer tube
Sand washing valve module is serially connected between two sand clean out pipe in portion, the sand washing valve module includes valve seat, cartridge, check valve A
With check valve B, the cartridge is fixed on the valve seat wall, and the check valve A is mounted on valve seat private side
On wall, the check valve B is mounted on valve seat inner tip, and the check valve A is located above cartridge；
Bimetallic tube is connected between the sand-flushing pipe column and sand-washing pen point, the bimetallic tube includes inner tube and outer layer
Pipe, there are annular space C between inner tube and outer tube, inner tube upper end is connected with sand-flushing pipe column, inner tube lower end and punching
Sand pen tip is connected, and outer tube outer upper end and lower end are connected separately with unidirectional leather cup and lower unidirectional leather cup, upper unidirectional leather cup, outer
Oilbearing stratum is isolated with internal casing space for layer pipe and lower unidirectional leather cup.
The quantity of the check valve A is no less than 2.
The invention has the benefit that
1,2 times of length plus single sand clean out pipe of scouring sluice length component is less than the total of sand clean out pipe outer tube in the present invention
Length, so that the present invention has a no less than sand washing valve module always during sand washing, in sand clean out pipe outer tube, punching
The effect of sand valve module be make sand cleaning fluid enter it is backward inside sand clean out pipe flow down, so the present invention can make sand cleaning fluid not between
Break, flowing downward of not stopping, sand caused by generating gravel sedimentation, which not only can be effectively prevented, in continual sand washing process buries and ask
Topic, and sand washing efficiency can be effectively increased, save the sand washing operation time.
2, oilbearing stratum is isolated with internal casing space for upper unidirectional leather cup, outer tube and lower unidirectional leather cup in the present invention,
It plays a very good protection to oilbearing stratum, that is, avoids the destruction that sand cleaning fluid generates oil reservoir, and reduce sand cleaning fluid
Loss, be conducive to improve sand washing efficiency.
Detailed description of the invention
Fig. 1 is the upper portion of schematic structural view of the invention.
Fig. 2 is the lower section of schematic structural view of the invention.
In figure: 1- sand washing valve module, 2- check valve B, 3- valve seat, 4- check valve A, 5- cartridge, 6- sand clean out pipe, 7- punching
Sandpipe self-sealing device, 8- sealed core, 9- inlet tube, 10- four-way junction of casing, 11- outlet tube, 12- liquid valve, 13- sand clean out pipe outer tube,
14- inner tube, the upper unidirectional leather cup of 15-, 16- outer tube, unidirectional leather cup under 17-, 18- sand-washing pen point, 19- annular space A, 20-
Annular space B, 21- annular space C.
In figure, the direction of sand cleaning fluid flowing when direction shown in arrow is sand washing.
Specific embodiment
The present invention is described further below in conjunction with attached drawing:
It should be understood that heretofore described sand clean out pipe 6 is oil pipe, the sand-flushing pipe column is tubing string.
Referring to attached drawing 1-2, a kind of oil pipe continuous sand flushing system, including sand-flushing pipe column, sand-washing pen point 18 and four-way junction of casing 10,
10 lower end of four-way junction of casing is connected on casing, and two on 10 side of four-way junction of casing are logical to pass through liquid valve 12 and outlet tube
11 are connected, and 11 other end of outlet tube is connected with sand cleaning fluid recyclable device, and sand-flushing pipe column is formed by connecting by more sand clean out pipe 6, punching
Sandpipe column lower end is connected with sand-washing pen point 18, and sand-washing pen point 18 touches sand, is careful not to decentralization excessively, prevents from letting off because under
Stifled card problem caused by degree.
10 upper end of four-way junction of casing is connected with sand clean out pipe self-sealing device 7, is equipped with and is used in the sand clean out pipe self-sealing device 7
The sealed core 8 of the annular of sand clean out pipe 6 is sealed, the sealed core 8 is fixed on the upside of 7 inner wall of sand clean out pipe self-sealing device by bolt,
With cambered, the collision that radian is conducive to when weakening through sand washing valve module 1 rubs the inside upper and lower ends of the sealed core 8 of annular
It wipes, makes sand washing valve module 1 by more smooth, 7 side wall of sand clean out pipe self-sealing device bypass has inlet tube 9, inlet tube 9 and liquid feeding pump phase
Connection, the liquid outlet of inlet tube 9 are located at the lower section of seal point between 7 inner wall of sealed core 8 and sand clean out pipe self-sealing device, make sand cleaning fluid not
Sand clean out pipe self-sealing device 7 can be gone out upwards, and 7 lower end of sand clean out pipe self-sealing device is fixedly connected with sand clean out pipe outer tube 13, sand clean out pipe housing
13 lower part of pipe is inserted into casing after passing through four-way junction of casing 10, and there are the annulars for crossing liquid between sand clean out pipe outer tube 13 and casing
Space A19, the channel that annular space A19 is returned out as the sand cleaning fluid for taking sand, sand-flushing pipe column top pass through sand clean out pipe outer tube 13
It is pierced by afterwards from the sealed core 8 of sand clean out pipe self-sealing device 7, there are the annulars for crossing liquid between sand-flushing pipe column and sand clean out pipe outer tube 13
Space B 20, the channel that annular space B20 enters as sand cleaning fluid are serially connected with sand washing valve group between two sand clean out pipe 6 of topmost
Part 1, and a sand washing valve module 1 is concatenated between the sand clean out pipe 6 transferred again and sand clean out pipe 6 below, the single sand washing
The length of pipe 6 adds 2 times of total lengths less than sand clean out pipe outer tube 13 of 1 length of sand washing valve module, so that the present invention exists
Always have a no less than sand washing valve module 1 during sand washing, in sand clean out pipe outer tube 13, i.e. a sand washing valve module 1 from
Before opening sand clean out pipe outer tube 13, another sand washing valve module 1 has entered in sand clean out pipe outer tube 13, the work of sand washing valve module 1
With being to make sand cleaning fluid enter 6 inside of sand clean out pipe to flow down backward, so the present invention can make, sand cleaning fluid is uninterrupted, it is downward not stop
Flowing, continual sand washing process effectively reduce the blocking of this system, sand washing efficiency are improved, when having saved sand washing operation
Between.
The sand washing valve module 1 includes valve seat 3, cartridge 5, check valve A4 and check valve B2, the sealant
Cylinder 5 is fixed on 3 side wall of valve seat, and cartridge 5 prevents sand cleaning fluid from continuing to flow downward in annular space B20, institute
The check valve A4 stated is mounted in 3 internal side wall of valve seat, and sand cleaning fluid can only enter inside sand clean out pipe 6 from check valve A4, cannot be returned
Out；Inflow velocity in order to make sand cleaning fluid faster, can suitably increase the quantity of check valve A4, in the present embodiment, check valve A4's
Quantity is 4.The check valve B2 is mounted on 3 inner tip of valve seat, cannot be to upstream into the sand cleaning fluid inside sand clean out pipe 6
It is dynamic, it can only flow downward.The check valve A4 is located above the seal point between 3 outer wall of cartridge 5 and valve seat, so that punching
Sand liquid cannot continue to flow downward, and can only be flowed by check valve A4 into sand clean out pipe 6.
Bimetallic tube is connected between the sand-flushing pipe column and sand-washing pen point 18, the bimetallic tube includes 14 He of inner tube
Outer tube 16, there are annular space C21, annular space C21 to return as the sand cleaning fluid for taking sand between inner tube 14 and outer tube 16
Channel out.14 upper end of inner tube is connected with sand-flushing pipe column, and 14 lower end of inner tube is connected with sand-washing pen point 18, in inner tube 14
Continue downward channel as sand cleaning fluid in portion.16 outer upper end of outer tube and lower end are connected separately with unidirectional leather cup 15 and place an order
To leather cup 17, oilbearing stratum is isolated with internal casing space for upper unidirectional leather cup 15, outer tube 16 and lower unidirectional leather cup 17, to oil
Layer plays good protection, that is, avoids the destruction that sand cleaning fluid generates oil reservoir, and reduce the loss of sand cleaning fluid, be conducive to
Improve sand washing efficiency.
The present invention is the sand washing process of sand clean out pipe 6 to be transferred in sand washing, but the present invention is connecting sand clean out pipe 6 to be transferred
It does not need termination of pumping in the process to stop into sand cleaning fluid, moreover, wanting the time for connecting sand clean out pipe 6 to be transferred without particularly severe
It asks, has been truly realized continuous, continual sand washing.Two unidirectional leather cups play the role of sealing isolation in the present invention, very well
Oilbearing stratum pressure is low, that penetration is strong protect, avoid the intrusion of sand cleaning fluid, improve sand washing efficiency, save
Sand washing operation time.
Claims (3)
1. a kind of oil pipe continuous sand flushing system, including sand-flushing pipe column, sand-washing pen point (18) and four-way junction of casing (10), the casing
Four-way (10) lower end is connected on casing, and the sand-flushing pipe column is formed by connecting by more sand clean out pipe (6), sand-flushing pipe column lower end with
Sand-washing pen point (18) is connected, it is characterised in that: described four-way junction of casing (10) upper end is connected with sand clean out pipe self-sealing device (7), institute
The sealed core (8) of the annular for sealing sand clean out pipe (6), sand clean out pipe self-sealing device (7) side are equipped in the sand clean out pipe self-sealing device (7) stated
Wall bypass has inlet tube (9), and the liquid outlet of inlet tube (9), which is located between sealed core (9) and sand clean out pipe self-sealing device (7) inner wall, to be sealed
The lower section of point, sand clean out pipe self-sealing device (7) lower end are fixedly connected with sand clean out pipe outer tube (13), and sand clean out pipe outer tube (13) lower part is worn
It crosses four-way junction of casing (10) to be inserted into casing afterwards, there are the annular space A for crossing liquid between sand clean out pipe outer tube (13) and casing
(19), the sand-flushing pipe column top is worn after passing through sand clean out pipe outer tube (13) from the sealed core (8) of sand clean out pipe self-sealing device (7)
Out, there are the annular space B (20) for crossing liquid, two sand washings of topmost between sand-flushing pipe column and sand clean out pipe outer tube (13)
It is serially connected with sand washing valve module (1) between pipe (6), the sand washing valve module (1) includes valve seat (3), cartridge (5), unidirectional
Valve A (4) and check valve B (2), the cartridge (5) are fixed on described valve seat (3) side wall, the check valve A
(4) it is mounted in valve seat (3) internal side wall, the check valve B (2) is mounted on valve seat (3) inner tip, the check valve
A (4) is located above cartridge (5)；
Be connected with bimetallic tube between the sand-flushing pipe column and sand-washing pen point (18), the bimetallic tube include inner tube (14) and
Outer tube (16), there are annular space C (21), inner tube (14) upper end and sand clean out pipe between inner tube (14) and outer tube (16)
Column is connected, and inner tube (14) lower end is connected with sand-washing pen point (18), and outer tube (16) outer upper end and lower end are connected separately with
Upper unidirectional leather cup (15) and lower unidirectional leather cup (17), upper unidirectional leather cup (15), outer tube (16) and lower unidirectional leather cup (17) are by ground
Lower oil reservoir is isolated with internal casing space.
2. a kind of oil pipe continuous sand flushing system according to claim 1, it is characterised in that: the number of the check valve A (4)
Amount no less than 2.
3. a kind of oil pipe continuous sand flushing system according to claim 1, it is characterised in that: the sand washing valve module (1)
2 times of length are less than the total length of sand clean out pipe outer tube (13) plus the length of single sand clean out pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144371.1A CN109184620B (en) | 2018-09-29 | 2018-09-29 | Oil pipe continuous sand washing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144371.1A CN109184620B (en) | 2018-09-29 | 2018-09-29 | Oil pipe continuous sand washing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109184620A true CN109184620A (en) | 2019-01-11 |
| CN109184620B CN109184620B (en) | 2020-06-23 |
Family
ID=64907824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811144371.1A Active CN109184620B (en) | 2018-09-29 | 2018-09-29 | Oil pipe continuous sand washing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109184620B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210483A (en) * | 2006-12-28 | 2008-07-02 | 中国海洋石油总公司 | Continuous sand flushing technique and continuous sand flushing device thereof |
| CN201106423Y (en) * | 2007-09-10 | 2008-08-27 | 吐哈石油勘探开发指挥部井下技术作业公司 | Liquid-injecting valveless type control reversing continue sand-flushing device |
| RU2346145C1 (en) * | 2007-06-18 | 2009-02-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Device used for removing sand plug from low pressure wells |
| CN102383750A (en) * | 2011-09-28 | 2012-03-21 | 张作阳 | Continuous positive and negative integrated sand washing device for oil well |
| CN103277059A (en) * | 2013-05-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Negative pressure combined-sand-washing and forced-sand-draining device |
| CN203879424U (en) * | 2014-06-17 | 2014-10-15 | 岳继文 | Novel continuous sand removal device for oil and water well |
| CN105041241A (en) * | 2015-06-03 | 2015-11-11 | 中国石油化工股份有限公司华东分公司采油厂 | Continuous direct cycle sand cleaning-out device for common oil pipes and technological method |
| CN105625969A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Continuous sand flushing conversion tool |
| CN206267815U (en) * | 2016-11-21 | 2017-06-20 | 西南石油大学 | Drilling type continuous sand flushing device |
| CN207092995U (en) * | 2017-07-28 | 2018-03-13 | 中国石油天然气股份有限公司 | Continuous sand flushing servicing unit |
| CN207453907U (en) * | 2017-09-26 | 2018-06-05 | 中国石油集团渤海钻探工程有限公司 | The closed continuous sand flushing control device of well head |
-
2018
- 2018-09-29 CN CN201811144371.1A patent/CN109184620B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210483A (en) * | 2006-12-28 | 2008-07-02 | 中国海洋石油总公司 | Continuous sand flushing technique and continuous sand flushing device thereof |
| RU2346145C1 (en) * | 2007-06-18 | 2009-02-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Device used for removing sand plug from low pressure wells |
| CN201106423Y (en) * | 2007-09-10 | 2008-08-27 | 吐哈石油勘探开发指挥部井下技术作业公司 | Liquid-injecting valveless type control reversing continue sand-flushing device |
| CN102383750A (en) * | 2011-09-28 | 2012-03-21 | 张作阳 | Continuous positive and negative integrated sand washing device for oil well |
| CN103277059A (en) * | 2013-05-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Negative pressure combined-sand-washing and forced-sand-draining device |
| CN203879424U (en) * | 2014-06-17 | 2014-10-15 | 岳继文 | Novel continuous sand removal device for oil and water well |
| CN105625969A (en) * | 2014-10-29 | 2016-06-01 | 中国石油化工股份有限公司 | Continuous sand flushing conversion tool |
| CN105041241A (en) * | 2015-06-03 | 2015-11-11 | 中国石油化工股份有限公司华东分公司采油厂 | Continuous direct cycle sand cleaning-out device for common oil pipes and technological method |
| CN206267815U (en) * | 2016-11-21 | 2017-06-20 | 西南石油大学 | Drilling type continuous sand flushing device |
| CN207092995U (en) * | 2017-07-28 | 2018-03-13 | 中国石油天然气股份有限公司 | Continuous sand flushing servicing unit |
| CN207453907U (en) * | 2017-09-26 | 2018-06-05 | 中国石油集团渤海钻探工程有限公司 | The closed continuous sand flushing control device of well head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109184620B (en) | 2020-06-23 |
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