CN220522537U - Sand control screen pipe for oil field - Google Patents
Sand control screen pipe for oil field Download PDFInfo
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- CN220522537U CN220522537U CN202322255351.4U CN202322255351U CN220522537U CN 220522537 U CN220522537 U CN 220522537U CN 202322255351 U CN202322255351 U CN 202322255351U CN 220522537 U CN220522537 U CN 220522537U
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- inner core
- pipe
- core pipe
- tube
- control screen
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- 239000004576 sand Substances 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000004804 winding Methods 0.000 claims abstract description 35
- 238000007599 discharging Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 44
- 239000002245 particle Substances 0.000 abstract description 17
- 238000001914 filtration Methods 0.000 abstract description 9
- 239000003129 oil well Substances 0.000 abstract description 9
- 239000010779 crude oil Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 15
- 239000013618 particulate matter Substances 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Centrifugal Separators (AREA)
Abstract
The utility model discloses a sand control screen pipe for an oil field, which relates to the technical field of oil extraction devices, in particular to a sand control screen pipe for an oil field, and the sand control screen pipe for the oil field comprises an upper joint, an outer layer pipe, an inner core pipe and a wire winding pipe, wherein the upper end of the inner core pipe is rotationally connected with the upper joint; the liquid medium in the oil well sequentially flows through the first liquid inlet and the second liquid inlet and then enters the inner core pipe, and flows from bottom to top in the inner core pipe, the liquid medium applies acting force to the inner thread blades and drives the inner core pipe to rotate, the outer spiral blades rotate to stir the liquid medium in the outer layer pipe when the inner core pipe rotates, so that the liquid medium in the outer layer pipe generates centrifugal force, sand particles are far away from the inner core pipe and are close to the outer layer pipe wall, crude oil enters the inner core pipe through the inner core pipe and the second liquid inlet on the wire winding pipe, the purpose of filtering and screening sand particles in a deep well through centrifugal force is achieved, and the filtering effect of sand particles in the oil well is greatly improved.
Description
Technical Field
The utility model relates to the technical field of oil extraction devices, in particular to a sand control screen pipe for an oil field, which belongs to the technical field of oil extraction pipes of oil fields.
Background
At present, the sand control screen pipe for the oil well is provided with a slotted screen pipe, a wire-wound screen pipe, a filling screen pipe, a double-layer screen pipe and the like, the slotted screen pipe, the wire-wound screen pipe and the filling screen pipe are low in sand blocking precision and strength and easy to damage, the double-layer screen pipe is poor in self-cleaning effect in the use process, impurities such as sand are easy to stay between the outer pipe and the core pipe, the double-layer screen pipe cannot work normally, the efficiency of the oil pump is reduced, and the service life of the oil pump is shortened.
In published chinese patent application, publication No.: CN202170783U, patent name: the self-cleaning double-layer filtering sieve tube, while the oil enters the annular space between the outer tube and the inner tube from the small hole of the outer tube of the device, the automatic separation of gas, sand and liquid is realized, and the separated gas is discharged into the well from the inclined exhaust hole of the upper joint; the separated sand is sunk into the bottom of the well through a valve ball seat; the separated oil enters the oil pump from the inner pipe. When liquid enters the inner core tube through the spiral blade, residual sand on the wall of the inner tube is washed away, so that the self-cleaning effect is achieved; however, the inner tube and the spiral blade provided on the inner tube of the prior art cannot rotate, sand in oil cannot be removed by screening, and the sand filtering effect is poor.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a sand control screen pipe for an oil field, which solves the problems in the background art.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a sand control screen pipe for oil field, includes top connection, outer layer pipe, inner core pipe and wire winding pipe respectively, the upper end and the top connection rotation of inner core pipe are connected, outer layer pipe is installed the lower extreme at the top connection, a plurality of second feed liquor holes have been seted up to the lower part of inner core pipe, install interior helical blade on the inside wall of inner core pipe, install outer helical blade on the lateral wall of inner core pipe, wire winding pipe box is established the lower extreme of inner core pipe and is close to second feed liquor hole department, a plurality of second feed liquor holes have also been seted up on the lateral wall of wire winding pipe.
Optionally, the upper end of inner core pipe is connected with the lower extreme rotation of top connection, and the rotation junction is provided with the sealing washer.
Optionally, the upper end of the outer layer tube is spirally connected with the lower end of the upper joint.
Optionally, a plurality of second feed liquor holes that the annular was arranged have been seted up on the lower part lateral wall of inner core pipe, outer helical blade fixed mounting is in the upper portion lateral wall of inner core pipe, inner helical blade fixed mounting is in the inside wall of inner core pipe, and inner helical blade separates the oil pipeline of inner core pipe inside and is the heliciform.
Optionally, the upper and lower ends of the wire winding pipe are fixedly connected with wire winding baffle rings, and the wire winding baffle rings are sleeved on the inner core pipe and are fixedly connected with the inner core pipe.
Optionally, the wire winding pipe is sleeved at the lower part of the inner core pipe and can cover the second liquid inlet hole on the inner core pipe.
Optionally, a plurality of first liquid inlets are formed in the side wall of the outer layer pipe, and each first liquid inlet is in annular arrangement.
Optionally, the lower part inside wall fixedly connected with support frame of outer pipe, the central shaft hole of support frame rotates with the lower extreme lateral wall of inner core pipe to be connected, set up a plurality of annular sand discharging port of arranging in central shaft hole week side on the support frame.
(III) beneficial effects
The utility model provides a sand control screen pipe for an oil field, which has the following beneficial effects:
1. this sand control screen pipe for oil field, through the extraction that utilizes the subaerial oil pump, make the liquid medium in the oil well flow in proper order through first feed liquor hole, the second feed liquor hole after entering into the inner core pipe, and flow from bottom to top in the inner core pipe, liquid medium flows between the internal thread blade of inner core pipe, liquid medium exerts effort and drive inner core pipe rotation to the internal thread blade, the inner core pipe rotates and drives outer helical blade rotation, outer helical blade rotation stirs the liquid medium in the outer layer pipe, make the liquid medium in the outer layer pipe produce centrifugal force, the fluid is close to the inner core pipe, the grit particulate matter is close to outer pipe wall, the crude oil enters into the inner core pipe through the inner core pipe, around the second feed liquor hole on the silk pipe in, the mesh of filtering the grit particulate matter through centrifugal force in having reached the deep well, the grit particulate matter filter effect of having improved in the oil well greatly.
2. This sand control screen pipe for oil field is through seting up a plurality of first feed liquor holes on the outer layer pipe, and each first feed liquor hole on the outer layer pipe filters and sieves out the great grit granule of particle diameter, has reached the mesh of filtering and sieving out the grit particulate matter in the fluid medium.
3 this sand control screen pipe for oil field establishes around the silk pipe through the cover on the inner core pipe for realize double-deck filtration, simultaneously, when the inner core pipe was rotatory, around the silk pipe also being in rotatory state, rotatory around the silk pipe can effectively check keep off grit particulate matter, avoid grit particulate matter to pass through around the second inlet on the silk pipe, reached the mesh of filtering the grit particulate matter in the screening out fluid medium.
Drawings
FIG. 1 is a schematic cross-sectional view of a sand control screen for an oilfield according to the present utility model;
FIG. 2 is a schematic cross-sectional view of a sand control screen for an oilfield around a test tube in accordance with the present utility model;
FIG. 3 is a schematic cross-sectional view of an inner core tube of a sand control screen for an oilfield in accordance with the present utility model;
FIG. 4 is a schematic perspective view of a support frame for a sand control screen for an oilfield.
In the figure: 1. an upper joint; 2. an outer layer tube; 3. an inner core tube; 4. an outer helical blade; 5. a wire winding baffle ring; 6. winding a wire tube; 7. a second liquid inlet hole; 8. an inner helical blade; 9. a first liquid inlet hole; 10. a support frame; 101. and a sand discharging port.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1 to 4, the present utility model provides the following technical solutions: the utility model provides an oil field sand control screen pipe includes top connection 1, outer layer pipe 2, inner core pipe 3 and wire winding pipe 6 respectively, and the upper end and the top connection 1 rotation of inner core pipe 3 are connected, and outer layer pipe 2 is installed the lower extreme at top connection 1, and a plurality of second feed liquor holes 7 have been seted up to the lower part of inner core pipe 3, installs interior helical blade 8 on the inside wall of inner core pipe 3, installs outer helical blade 4 on the lateral wall of inner core pipe 3, and wire winding pipe 6 cover is established the lower extreme of inner core pipe 3 and is close to second feed liquor hole 7 department, has also seted up a plurality of second feed liquor holes 7 on the lateral wall of wire winding pipe 6. A plurality of first liquid inlet holes 9 are formed in the side wall of the outer layer pipe 2, and the first liquid inlet holes 9 are annularly distributed.
When the sand control screen pipe for the oil field is actually implemented, the sand control screen pipe for the oil field is respectively matched with an oil pump, a plurality of oil pipes, tail pipes and plugs, the oil pump is communicated with each oil pipe, the lower ends of the connected oil pipes are connected with the sand control screen pipe, the tail pipes are installed at the lower ends of the sand control screen pipes, and the plugs are installed at the lower ends of the tail pipes. According to the oil-liquid medium (refer to underground liquid, crude oil, sand particles and the like) enters the outer layer pipe 2 through the first liquid inlet 9, the oil-liquid medium sequentially flows through the wire winding pipe 6 and the second liquid inlet 7 on the inner core pipe 3 and then enters the inner core pipe 3, under the pumping of the oil pump, the oil-liquid medium flows from bottom to top, the inner spiral blades 8 in the inner core pipe 3 flow and push the inner spiral blades 8 to rotate, the inner spiral blades 8 drive the inner core pipe 3 to rotate, the inner core pipe 3 rotates to drive the outer spiral blades 4 to rotate, the outer spiral blades 4 rotationally stir the oil-liquid medium in the outer layer pipe 2, the sand particles in the oil-liquid medium are centrifugally rotated by taking the inner core pipe 3 as an axle center, the sand particles in the oil-liquid medium move away from the axle center (the side of the inner core pipe 3), the crude oil is gathered in the axle center (the periphery of the inner core pipe 3) after sequentially flowing through the wire winding pipe 6 and the second liquid inlet 7 on the inner core pipe 3, and pumped by the oil pump.
Specifically, the upper end of the inner core pipe 3 is rotatably connected with the lower end of the upper joint 1, and a sealing ring is arranged at the rotary connection position.
Wherein, through setting up the sealing washer in the rotation junction of core tube 3 and top connection 1, prevent that grit particulate matter etc. from blocking core tube 3 and rotating.
Specifically, the upper end of the outer tube 2 is spirally connected with the lower end of the upper joint 1.
Wherein, through with outer layer pipe 2 and top connection 1 threaded connection, the dismouting of pipeline of being convenient for.
Specifically, a plurality of second liquid inlet holes 7 which are annularly distributed are formed in the side wall of the lower portion of the inner core tube 3, the outer spiral blades 4 are fixedly arranged on the outer side wall of the upper portion of the inner core tube 3, the inner spiral blades 8 are fixedly arranged on the inner side wall of the inner core tube 3, and the inner spiral blades 8 divide an oil pipeline inside the inner core tube 3 into a spiral shape.
Wherein the oil medium flows through the second inlet opening 7 into the inner core tube 3.
Specifically, the upper end and the lower end of the wire winding pipe 6 are fixedly connected with wire winding baffle rings 5, and the wire winding baffle rings 5 are sleeved on the inner core pipe 3 and are fixedly connected with the inner core pipe.
The wire winding pipe 6 is sleeved on the inner core pipe 3 through the wire winding baffle ring 5 and is fixedly connected with the inner core pipe 3.
Further specifically, the wire winding tube 6 is sleeved at the lower part of the inner core tube 3 and can cover the second liquid inlet 7 on the inner core tube 3.
The oil medium flows through the second liquid inlet holes 7 on the wire winding pipe 6 and the inner core pipe 3 in sequence, and sand particles in the oil medium are filtered and screened out when passing through the second liquid inlet holes 7 on the wire winding pipe 6 and the inner core pipe 3. The wire winding pipe 6 is sleeved on the inner core pipe 3 to realize double-layer filtration, and meanwhile, when the inner core pipe 3 rotates, the wire winding pipe 6 is in a rotating state, and the rotating wire winding pipe 6 can effectively block sand and stone particles, so that the sand and stone particles are prevented from being filtered and screened out of sand and stone particles in an oil medium through the second liquid inlet 7 of the wire winding pipe 6.
Specifically, the lower part inside wall fixedly connected with support frame 10 of outer tube 2, the central shaft hole of support frame 10 rotates with the lower extreme lateral wall of inner tube 3 to be connected, has offered a plurality of annular sand leakage mouths 101 of arranging in central shaft hole week side on the support frame 10.
The supporting frame 10 is used for supporting and fixing the lower end of the inner core tube 3, so as to stabilize the axial direction of the inner core tube 3 during rotation. After the sand particles in the oil medium are centrifugally rotated, the sand particles are far away from the side where the inner core tube 3 is located, the sand particles gradually fall under the action of gravity, and the falling sand particles pass through the sand discharge port 101 on the support frame 10
During the use, when actually implementing, this application shows a sand control screen pipe for oil field respectively with oil-well pump, a plurality of oil pipe, tail pipe, end cap cooperation use, oil-well pump and each oil pipe intercommunication, the oil pipe lower extreme and the sand control screen pipe of each connection are connected, the tail pipe is installed to the lower extreme of sand control screen pipe, the end cap is installed to the tail pipe lower extreme. In this application, fluid medium (including crude oil, grit particulate matter etc.) enters into outer intraductal 2 through first feed liquor hole 9, fluid medium flows in proper order and enters into inner core intraductal 3 behind the second feed liquor hole 7 on around silk pipe 6, inner core intraductal 3, under the extraction of oil-well pump, fluid medium flows from bottom to top, fluid medium flows on the interior helical blade 8 in inner core intraductal 3, and promote interior helical blade 8 rotation, interior helical blade 8 drives interior core intraductal 3 rotation, inner core intraductal 3 rotation drives outer helical blade 4 rotation, outer helical blade 4 rotation stirs the fluid medium in outer intraductal 2, make fluid medium regard inner core intraductal 3 as the axle center to do centrifugal rotation, grit particulate matter in the fluid medium is to keeping away from the axle center (inner core intraductal 3 place side removes, crude oil then gathers in axle center (inner core intraductal 3 week side), flow in proper order through around silk pipe crude oil, second feed liquor hole 7 on inner core intraductal 3 after entering into inner core intraductal 3, and by the grit particulate matter in the oil-well pump, after centrifugal rotation, inner core intraductal 3 drives outer helical blade 4 rotation, the fluid medium rotation, make the fluid medium in outer helical blade 4 rotation, make the fluid medium take off the core pipe 3 as the centrifugal rotation, the side is kept away from the core, the grit particulate matter, and the grit particulate matter is in the side is in the core through the support frame, the effect of the downal 10, the sand particle is in the downfall down.
The application shows a technical parameter of sand control screen pipe for oil field: maximum outer diameter: 89mm; minimum inside diameter: 27mm; diameter of outer tube: 73mm; total length: 1935mm; separation particle size: > 0.1mm; tensile strength: more than or equal to 570Mpa; well fluid handling capacity: not more than 352M3/d; viscosity of downhole medium: less than or equal to 30 mPa.S; sand content of well fluid: less than or equal to 1.5 per mill.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. The sand control screen pipe for oil field is characterized in that: the novel inner core tube comprises an upper joint (1), an outer layer tube (2), an inner core tube (3) and a wire winding tube (6), wherein the upper end of the inner core tube (3) is rotationally connected with the upper joint (1), the outer layer tube (2) is installed at the lower end of the upper joint (1), a plurality of second liquid inlet holes (7) are formed in the lower portion of the inner core tube (3), inner spiral blades (8) are installed on the inner side wall of the inner core tube (3), outer spiral blades (4) are installed on the outer side wall of the inner core tube (3), the wire winding tube (6) is sleeved at the lower end of the inner core tube (3) and is close to the second liquid inlet holes (7), and a plurality of second liquid inlet holes (7) are formed in the side wall of the wire winding tube (6).
2. The sand control screen for oil field of claim 1, wherein: the upper end of the inner core pipe (3) is rotationally connected with the lower end of the upper joint (1), and a sealing ring is arranged at the rotational connection position.
3. The sand control screen for oil field of claim 1, wherein: the upper end of the outer layer tube (2) is spirally connected with the lower end of the upper joint (1).
4. The sand control screen for oil field of claim 1, wherein: the oil pipeline inner core pipe comprises an inner core pipe body and is characterized in that a plurality of second liquid inlet holes (7) which are annularly distributed are formed in the side wall of the lower portion of the inner core pipe body, an outer spiral blade (4) is fixedly arranged on the outer side wall of the upper portion of the inner core pipe body (3), an inner spiral blade (8) is fixedly arranged on the inner side wall of the inner core pipe body (3), and the inner spiral blade (8) separates an oil pipeline inside the inner core pipe body (3) into a spiral shape.
5. The sand control screen for oil field of claim 1, wherein: the upper end and the lower end of the wire winding pipe (6) are fixedly connected with wire winding baffle rings (5), and the wire winding baffle rings (5) are sleeved on the inner core pipe (3) and are fixedly connected with the inner core pipe.
6. The sand control screen for an oilfield of claim 5, wherein: the wire winding pipe (6) is sleeved at the lower part of the inner core pipe (3) and can cover the second liquid inlet (7) on the inner core pipe (3).
7. The sand control screen for oil field of claim 1, wherein: a plurality of first liquid inlet holes (9) are formed in the side wall of the outer layer tube (2), and the first liquid inlet holes (9) are annularly distributed.
8. The sand control screen for an oilfield of claim 7, wherein: the sand discharging device is characterized in that a supporting frame (10) is fixedly connected to the inner side wall of the lower portion of the outer tube (2), a central shaft hole of the supporting frame (10) is rotatably connected with the outer side wall of the lower end of the inner tube (3), and a plurality of sand discharging ports (101) which are annularly distributed on the periphery of the central shaft hole are formed in the supporting frame (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322255351.4U CN220522537U (en) | 2023-08-22 | 2023-08-22 | Sand control screen pipe for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322255351.4U CN220522537U (en) | 2023-08-22 | 2023-08-22 | Sand control screen pipe for oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220522537U true CN220522537U (en) | 2024-02-23 |
Family
ID=89924712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322255351.4U Active CN220522537U (en) | 2023-08-22 | 2023-08-22 | Sand control screen pipe for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220522537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117846551A (en) * | 2024-03-06 | 2024-04-09 | 漾泉蓝焰煤层气有限责任公司 | Sand-proof screen pipe |
-
2023
- 2023-08-22 CN CN202322255351.4U patent/CN220522537U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117846551A (en) * | 2024-03-06 | 2024-04-09 | 漾泉蓝焰煤层气有限责任公司 | Sand-proof screen pipe |
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