CN201391255Y - Continuous sand washing device for oil wells and water wells - Google Patents
Continuous sand washing device for oil wells and water wells Download PDFInfo
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- CN201391255Y CN201391255Y CN200920096066U CN200920096066U CN201391255Y CN 201391255 Y CN201391255 Y CN 201391255Y CN 200920096066 U CN200920096066 U CN 200920096066U CN 200920096066 U CN200920096066 U CN 200920096066U CN 201391255 Y CN201391255 Y CN 201391255Y
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- sand washing
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- fluid cylinder
- continuous sand
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Abstract
The utility model relates to a continuous sand washing device for oil wells and water wells, which consists essentially of a self-sealing well plugging device, a casing spool, a duct hanger, a hanger and a sand washing valve, wherein the sand washing valve consists of a valve body at the upper part and a center pipe assembly at the lower part; the valve body and a center pipe are coaxially and fixedly arranged; the valve body is internally and coaxially provided with a hydraulic cylinder with a gap; the bottom of the valve body is provided with a side hole which is communicated with the bottom of the hydraulic cylinder; the upper part of the hydraulic cylinder is provided with an upper side hole; the hydraulic cylinder is internally provided with a piston; a space formed between the outer wall of the hydraulic cylinder and the inner wall of the valve body is communicated with the interior of the center pipe of the center pipe assembly; a sealing rubber tube is arranged at the outer wall of the center pipe; and the upper end of the sealing rubber tube is sheathed with an upper compression ring with a side through hole. The continuous sand washing device has scientific and reasonable structure design, and can achieve continuous sand washing without stopping a pump, thus greatly improving the working efficiency of sand washing, and precluding environmental pollution caused by sand washing fluid falling on the ground in the sand washing process; and the continuous sand washing device has the advantages of large flow area, reliable performance, simple and convenient operation, and the like.
Description
Technical field
The utility model relates to the employed sand flushing device of oil exploitation, particularly a kind of oil well, well continuous sand flushing device.
Background technology
In oil extraction process, formation sand production can have a strong impact on the exploitation of oil gas, and the sand washing operation becomes the important means of recovering oil well production.Present employed sand flushing device, when needs lengthenings sand washing tubing string, must termination of pumping could connect oil pipe, can not continuous sand flushing, cause that sand washing speed is slow, efficient is low, and the accident of sand card sand washing tubing string take place easily, and be easy to generate oil gas and leak and cause environment pollution.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of oil well, well continuous sand flushing device are provided, and it can realize not termination of pumping continuous sand flushing, has that sand washing speed is fast, efficient is high, the advantage of good airproof performance.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of oil well, the well continuous sand flushing device, mainly by self-sealing blowout preventer, four-way junction of casing, the conduit hanger, conduit and scouring sluice constitute, the self-sealing blowout preventer bottom installs four-way junction of casing, scouring sluice is coaxial to be threaded onto in self-sealing blowout preventer and the four-way junction of casing, conduit is installed on the four-way junction of casing bottom by the conduit hanger, it is characterized in that: scouring sluice is made of upper body and lower central pipe assembly, valve body installs with central tube is coaxial, concentric gap is provided with fluid cylinder in the valve body, the valve body bottom is shaped on side opening, this side opening is communicated with the fluid cylinder bottom, fluid cylinder top is shaped on upper-side hole, and piston is installed in the fluid cylinder, and the space that forms between fluid cylinder outer wall and the valve interior wall is connected with the central tube inside of central tube assembly, the central tube outer wall is equipped with cartridge, and sealing packing element upper end suit one is shaped on the upper press ring of side through hole.
And described cartridge is made of last cartridge and lower seal packing element, last cartridge upper end suit upper press ring, lower seal packing element lower end suit adjustable ring, pressure ring in the common installation one between two cartridge.
And the spacing hollow plug of pair of pistons is installed in described fluid cylinder upper end.
And, between caulking gum fuse upper surface that described self-sealing blowout preventer inside is installed and the loam cake pressure ring and ring-type gland being installed, pressure ring external surface bottom tapering is consistent with the shell inner surface tapering, and the pressure ring external surface is provided with O-ring seal.
And the central tube of another scouring sluice is installed in the valve body upper end of described scouring sluice by a joint.
Advantage of the present utility model and good effect are:
1. this oil well, well continuous sand flushing device be by rationalizing improvement to scouring sluice, and another scouring sluice that is implemented under the air-proof condition continued access moves down, and to realize not termination of pumping continuous sand flushing, it is good to have a sealing effectiveness, the high outstanding advantage of sand washing efficient.
2. scouring sluice is made of upper body and lower central pipe (central tube assembly) in this oil well, the well continuous sand flushing device, central tube outer wall at the central tube assembly is equipped with one cartridge, the expanded radially when the perfusion sand cleaning fluid of sealing packing element, can realize the sealing between central tube outer wall and the pipe inner wall, make the annulus that forms sealing between scouring sluice integral body and the self-sealing blowout preventer, to be implemented in the purpose of sand washing under the air-proof condition, prevent that sand cleaning fluid is excessive.
3. the utility model scientific structure design is reasonable, but the scouring sluice that passes through the continued access of being installed is realized not termination of pumping continuous sand flushing, can increase substantially the sand washing operating efficiency, stops in the sand washing process sand cleaning fluid and lands the environment pollution that causes, and improves operating environment; Have simultaneously that area of passage is big, the advantage of dependable performance, can prevent effectively that the sand washing tubing string from accident under the sanding in well taking place in the sand washing process; And easy and simple to handle, thereby can significantly reduce labour intensity.
Description of drawings
Fig. 1 is the utility model structural representation (sectional view).
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of continuous sand flushing device mainly is to be made of self-sealing blowout preventer, four-way junction of casing, conduit hanger, conduit and scouring sluice.The self-sealing blowout preventer bottom installs four-way junction of casing, and scouring sluice is coaxial to be threaded onto in self-sealing blowout preventer and the four-way junction of casing, and conduit is installed on the four-way junction of casing bottom by the conduit hanger.
Self-sealing blowout preventer is made of housing 7, loam cake 2, caulking gum fuse 5, ring-type gland 3, pressure ring 4.Loam cake is installed in the housing upper end of self-sealing blowout preventer, the coaxial installation caulking gum of enclosure interior fuse, pressure ring and ring-type gland are installed between caulking gum fuse upper surface and the loam cake, pressure ring external surface bottom tapering is consistent with the shell inner surface tapering, the pressure ring external surface is provided with O-ring seal, to improve the sealing of self-sealing blowout preventer.One side of housing is provided with feed liquor pipe nipple 11.The four-way junction of casing 15 coaxial lower ends that are installed in self-sealing blowout preventer, at the inner coaxial installation conduit hanger 14 of four-way junction of casing, this conduit hanger upper end is a conulite, at the coaxial installation conduit 23 in conduit hanger lower end.Outer surface of cone is provided with O-ring seal.Conduit does not have joint hoop Internal Pipe Thread by upper catheter and bottom conduit and is connected and forms.
Scouring sluice is formed by upper body 9 and coaxial the installing of lower central pipe assembly, and the central tube assembly is made of central tube 16 and other coupling assembling, and scouring sluice is coaxial to be threaded onto in self-sealing blowout preventer and the conduit hanger.Concentric gap installs fluid cylinder 8 in the upper body of scouring sluice, and valve body lower end is shaped on side opening 13, and this side opening is communicated with the fluid cylinder bottom, and fluid cylinder top is shaped on upper-side hole 10, the coaxial piston 12 that is movably installed with in the fluid cylinder.The fluid cylinder upper end install one can spacing piston hollow plug 6.The two halves toroidal cavity that forms between fluid cylinder outer wall and the valve interior wall is connected with central tube inside.The central tube outer wall of central tube assembly is shaped on an annular groove, outside this annular groove, cartridge is installed, cartridge is made of last cartridge 19 and lower seal packing element 21, last cartridge upper end suit upper press ring 17, pressure ring 20 in the common installation one between suit adjustable ring 22, two cartridge of lower seal packing element lower end.The upper press ring radial equipartition is shaped on the side through hole 18 that can flow into for sand cleaning fluid, but its top expanded radially of the sand cleaning fluid effect of cartridge in entering annular groove open, will seal between bottom oil pipe and the conduit hanger inner surface.
Joint 1 coaxial installation oil pipe can pass through in scouring sluice upper end, and the oil pipe other end is fixed with the scouring sluice of same structure and constitutes the sand washing tubing string of lengthening, because the scouring sluice structure is identical, omits the structure chart of the sand flushing device of another scouring sluice of installation thus.
Operating principle of the present utility model is:
In the sand washing operation process, the swiftly flowing high pressure sand cleaning fluid that pump truck pumps at first enters scouring sluice upper body and lower central pipe and self-sealing blowout preventer, the formed annular space of conduit hanger through the feed liquor pipe nipple of self-sealing blowout preventer housing.
The made side through hole of sand cleaning fluid self sealss packing element upper press ring enters in the cartridge, and its expanded radially is opened, and realizes the sealing between central tube and the conduit.Meanwhile, sand cleaning fluid only can enter the made side opening in scouring sluice upper body lower end, and bottom fluid cylinder, enter in the fluid cylinder, the promotion piston moves up, piston contacts hollow plug and realizes sealing, and the fluid cylinder upper-side hole is opened thus, and sand cleaning fluid enters two ring cavities of upper valve body and fluid cylinder formation from the fluid cylinder upper-side hole, sand cleaning fluid enters lower central pipe internal channel by ring cavity, carries out the sand washing operation.
When the needs continuous sand flushing, pump truck works on, and above-mentioned sand washing tubing string is moved down, and second scouring sluice of upper end entered in sealing blowout preventer and the conduit hanger, swiftly flowing high pressure sand cleaning fluid by the feed liquor pipe nipple of sealing blowout preventer, and enters upper body, fluid cylinder and central tube equally successively.At this moment, the piston that the sand cleaning fluid that comes in the oil pipe of top promotes first scouring sluice moves down, close the side opening of fluid cylinder bottom and valve body, sand cleaning fluid still enters two ring cavities that formed by upper body and fluid cylinder through the fluid cylinder upper-side hole, enter lower central pipe internal channel then, realize that not termination of pumping uninterruptedly works continuously.
Claims (5)
1. oil well, the well continuous sand flushing device, mainly by self-sealing blowout preventer, four-way junction of casing, the conduit hanger, conduit and scouring sluice constitute, the self-sealing blowout preventer bottom installs four-way junction of casing, scouring sluice is coaxial to be threaded onto in self-sealing blowout preventer and the four-way junction of casing, conduit is installed on the four-way junction of casing bottom by the conduit hanger, it is characterized in that: scouring sluice is made of upper body and lower central pipe assembly, valve body installs with central tube is coaxial, concentric gap is provided with fluid cylinder in the valve body, the valve body bottom is shaped on side opening, this side opening is communicated with the fluid cylinder bottom, fluid cylinder top is shaped on upper-side hole, and piston is installed in the fluid cylinder, and the space that forms between fluid cylinder outer wall and the valve interior wall is connected with the central tube inside of central tube assembly, the central tube outer wall is equipped with cartridge, and sealing packing element upper end suit one is shaped on the upper press ring of side through hole.
2. oil well according to claim 1, well continuous sand flushing device, it is characterized in that: described cartridge is made of last cartridge and lower seal packing element, last cartridge upper end suit upper press ring, lower seal packing element lower end suit adjustable ring, pressure ring in the common installation one between two cartridge.
3. oil well according to claim 1, well continuous sand flushing device is characterized in that: the spacing hollow plug of pair of pistons is installed in described fluid cylinder upper end.
4. oil well according to claim 1, well continuous sand flushing device, it is characterized in that: between caulking gum fuse upper surface that described self-sealing blowout preventer inside is installed and the loam cake pressure ring and ring-type gland are installed, pressure ring external surface bottom tapering is consistent with the shell inner surface tapering, and the pressure ring external surface is provided with O-ring seal.
5. oil well according to claim 1, well continuous sand flushing device is characterized in that: the central tube of another scouring sluice is installed in the valve body upper end of described scouring sluice by a joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920096066U CN201391255Y (en) | 2009-03-27 | 2009-03-27 | Continuous sand washing device for oil wells and water wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920096066U CN201391255Y (en) | 2009-03-27 | 2009-03-27 | Continuous sand washing device for oil wells and water wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391255Y true CN201391255Y (en) | 2010-01-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920096066U Expired - Fee Related CN201391255Y (en) | 2009-03-27 | 2009-03-27 | Continuous sand washing device for oil wells and water wells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391255Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397858A (en) * | 2013-07-24 | 2013-11-20 | 濮阳泰和油气工程有限公司 | Drainage and production combined sand washing machine for coal bed gas and method for applying drainage and production combined sand washing machine |
| 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 |
| CN105804679A (en) * | 2016-02-06 | 2016-07-27 | 高伟时 | Horizontal well shaft processing process tubing string device for realizing continuous circulation by ordinary oil pipe |
| CN110821427A (en) * | 2019-11-20 | 2020-02-21 | 天津大港油田石油工程研究院钻采技术开发有限公司 | Negative pressure screw rod rotation sand washing process pipe column |
| CN110857623A (en) * | 2018-08-21 | 2020-03-03 | 中国石油化工股份有限公司 | Continuous sand washing type sand production detection system and method |
-
2009
- 2009-03-27 CN CN200920096066U patent/CN201391255Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397858A (en) * | 2013-07-24 | 2013-11-20 | 濮阳泰和油气工程有限公司 | Drainage and production combined sand washing machine for coal bed gas and method for applying drainage and production combined sand washing machine |
| CN103397858B (en) * | 2013-07-24 | 2015-11-04 | 濮阳泰和油气工程有限公司 | Coal bed gas extraction associating sand washing machine and application process |
| 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 |
| CN105804679A (en) * | 2016-02-06 | 2016-07-27 | 高伟时 | Horizontal well shaft processing process tubing string device for realizing continuous circulation by ordinary oil pipe |
| CN105804679B (en) * | 2016-02-06 | 2018-05-08 | 高伟时 | Continuously circulating water horizontal well wellbore treatments process pipe string device is realized using plain tubing |
| CN110857623A (en) * | 2018-08-21 | 2020-03-03 | 中国石油化工股份有限公司 | Continuous sand washing type sand production detection system and method |
| CN110821427A (en) * | 2019-11-20 | 2020-02-21 | 天津大港油田石油工程研究院钻采技术开发有限公司 | Negative pressure screw rod rotation sand washing process pipe column |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20100127 Termination date: 20140327 |