CN108729888B - Self-suction sand-proof screen pipe - Google Patents
Self-suction sand-proof screen pipe Download PDFInfo
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- CN108729888B CN108729888B CN201810408067.7A CN201810408067A CN108729888B CN 108729888 B CN108729888 B CN 108729888B CN 201810408067 A CN201810408067 A CN 201810408067A CN 108729888 B CN108729888 B CN 108729888B
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- pipe section
- pipe
- hole
- section
- sand control
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- 239000004576 sand Substances 0.000 claims abstract description 45
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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- 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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model provides a self-suction sand control screen pipe, which comprises an outer screen pipe and a filtering device, wherein the outer screen pipe is sleeved outside the filtering device; the outer screen includes a plurality of apertures having a first aperture diameter; the filter device comprises a power device, a first pipe section, a second pipe section and an execution end. The filtering device is used for filtering the sand grain substances which penetrate through the wall surface of the outer screen pipe and enter the inner part of the outer screen pipe.
Description
Technical Field
The utility model relates to an oil gas well drilling technical field especially relates to a from inhaling heavy sand control screen pipe.
Background
In the exploitation process of an oil and gas well, the sand control technology can directly influence the quality and the exploitation effect of the oil and gas well, and meanwhile, the service life of the oil and gas well is also related, so that the sand control technology is vital in the exploitation process of the oil and gas well, and the continuous development of the sand control technology is promoted to be required to be continuously innovated to the sand control tool and the matched process thereof, wherein the sand control tool which is most commonly used in the exploitation process of the oil and gas well is a sand control screen pipe, sand grains in stratum output products can be blocked outside the sand control screen pipe through the sand control screen pipe, a good sand control purpose can be achieved, and the phenomenon that.
However, most of the screens in the prior art are wire-wrapped screens, slotted screens or perforated screens, but these screens have problems (such as the wire tangling phenomenon of the wire-wrapped screens, the blocking phenomenon of the slotted screens and the perforated screens) caused by their own structures, and also have a series of problems such as that the screen cannot play a good sand control effect when the pores of the screens are too large, and the oil gas passing efficiency is reduced when the pores are too small.
Disclosure of Invention
To solve at least one technical problem in the prior art as set forth above, the present disclosure provides a self-settling sand control screen having a novel structure. The self-suction sand setting and preventing sieve tube is realized by the following technical scheme.
The self-suction sand setting and preventing sieve tube comprises an outer sieve tube and a filtering device, wherein the outer sieve tube is sleeved outside the filtering device;
the outer screen includes a plurality of apertures having a first aperture diameter;
the filtering device comprises a power device, a first pipe section, a second pipe section and an execution end;
the power device, the first pipe section, the second pipe section and the execution end are arranged along the axial direction of the outer sieve tube;
the lower end of the power device is connected with the upper end of the first pipe section, the lower end of the first pipe section is connected with the upper end of the second pipe section, and the lower end of the second pipe section is connected with the execution end;
the lower end of the power device is provided with a driving part, the lower end of the driving part is connected with a third pipe section, the driving part and the third pipe section are arranged in the first pipe section, and the third pipe section extends to the lower end of the first pipe section from the lower end of the driving part;
the lower end of the first pipe section is connected with the upper end of the second pipe section through a partition plate;
a first cavity is formed among the first pipe section, the isolation plate, the third pipe section, the driving part and the power device;
the partition plate is provided with a central hole, a fourth pipe section extends out of the central hole, and the upper end of the fourth pipe section is communicated with the lower end of the third pipe section through the central hole;
the fourth pipe section is arranged in the second pipe section, the pipe wall of the fourth pipe section and the lower end of the fourth pipe section are of an integral structure, and the pipe wall and the lower end of the fourth pipe section are both provided with a plurality of holes with second apertures;
the execution end is a hemisphere with a middle through hole, the plane end of the hemisphere is connected with the lower end of the second pipe section, the upper end of the middle through hole and the plane end of the hemisphere are located on the same plane, and the size of the upper end of the middle through hole is larger than that of the lower end of the middle through hole.
According to at least one embodiment of the present disclosure, the size of the upper end of the middle through hole is larger than the radial size of the fourth tube section, preferably more than twice the radial size of the fourth tube section.
According to at least one embodiment of the present disclosure, the size of the lower end of the through-hole is larger than the size of the hole having the first aperture, preferably twice or more the size of the hole having the first aperture.
According to at least one embodiment of the present disclosure, the size of the hole having the second aperture diameter is larger than the size of the hole having the first aperture diameter, but smaller than the size of the lower end of the through-center hole.
According to at least one embodiment of the present disclosure, the lower end of the outer screen can axially cover the lower end of the actuation end.
According to at least one embodiment of the present disclosure, the lower end of the outer screen has an excess length of pipe in an axial direction relative to the lower end of the actuation end.
According to at least one embodiment of the present disclosure, the power plant, the first pipe section and the second pipe section have the same size in the radial direction, and the upper end of the actuation end has the same size in the radial direction as the lower end of the second pipe section.
According to at least one embodiment of the present disclosure, a driving part through hole is provided on the driving part, the driving part through hole is communicated with the first cavity, the driving part through hole is also communicated with the third pipe section, and the size of the driving part through hole is the same as the radial size of the third pipe section.
According to at least one embodiment of the present disclosure, the power plant is removably connected to the first pipe section.
According to at least one embodiment of the present disclosure, the first pipe section is detachably connected to the second pipe section.
According to at least one embodiment of the present disclosure, the outer screen and the filtering apparatus are of a split structure.
According to at least one embodiment of the present disclosure, the second tube segment and the implement end are removably coupled.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a self-priming sand setting sand control screen according to an embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 shows a detailed structural diagram of the self-sinking sand control screen according to the present embodiment.
The self-absorption sand setting and preventing sieve tube comprises an outer sieve tube and a filtering device, wherein the outer sieve tube is sleeved outside the filtering device and comprises a plurality of holes (not shown in the figure) with first apertures, the filtering device comprises a power device, a first tube section, a second tube section and an execution end, the power device, the first tube section, the second tube section and the execution end are arranged along the axial direction of the outer sieve tube, the lower end of the power device is connected with the upper end of the first tube section, the lower end of the first tube section is connected with the upper end of the second tube section, the lower end of the second tube section is connected with the execution end, the lower end of the power device is provided with a driving part, the lower end of the driving part is connected with a third tube section, the driving part and the third tube section are arranged inside the first tube section, the third tube section extends to the lower end of the first tube section from the lower end of the driving part, the lower end of the first tube section is, A first cavity is formed among the third pipe section, the driving part and the power device, the partition plate is provided with a central hole, a fourth pipe section extends out of the central hole, the upper end of the fourth pipe section is communicated with the lower end of the third pipe section through the central hole, the fourth pipe section is arranged inside the second pipe section, the pipe wall of the fourth pipe section and the lower end of the fourth pipe section are of an integral structure, a plurality of holes (not shown in the figure) with second apertures are arranged on the pipe wall and the lower end of the fourth pipe section, the execution end is a hemisphere with a middle through hole, the plane end of the hemisphere is connected with the lower end of the second pipe section, the upper end of the middle through hole and the plane end of the hemisphere are located on the same plane, and the size of the upper end of the middle through hole is.
In at least one embodiment of the present disclosure, a driving portion through hole (not shown in the figure) is formed in the driving portion, the driving portion through hole is communicated with the first cavity, the driving portion through hole is further communicated with the third pipe section, and the size of the driving portion through hole is the same as the radial size of the third pipe section.
The outer screen pipe can be a perforated screen pipe which is common in the prior art, the first apertures of the plurality of holes are properly arranged, sand can hardly penetrate through the holes of the outer screen pipe to enter the outer screen pipe and can be deposited at the bottom of the outer screen pipe, and the sand deposited at the bottom of the outer screen pipe is extracted and filtered by using the filtering device, so that the deposition of the sand at the bottom of the outer screen pipe is avoided. Since the size of the upper end of the middle through-hole is larger than that of the lower end of the middle through-hole, the accumulation of sand at the lower end of the middle through-hole is avoided.
The power device provides power for the driving part, the driving part can be an air pump, the driving part enables settled sand to be sucked by the middle through hole of the execution end by reducing air pressure in the second pipe section, the settled sand is filtered for the first time through the fourth pipe section, sand with the size larger than the aperture of the hole of the fourth pipe section is not sucked into the fourth pipe section, the sand is sucked into the fourth pipe section and is further sucked into the third pipe section, and the sand enters the first cavity through the through hole of the driving part. Preferably, an opening (not shown) is provided in the side wall of the first tube section for removing sand from the first chamber.
In at least one embodiment of the present disclosure, the size of the upper end of the central bore is larger than the radial size of the fourth tube section, preferably more than twice the radial size of the fourth tube section.
Through this kind of size setting, the sand that gets into the second pipeline section by well through-hole can disperse to the bottom and the lateral wall of fourth pipeline section to get into the bottom and the lateral wall of fourth pipeline section, improve the efficiency that gets into the fourth pipeline section. The radial dimension of the fourth tube section refers to the diameter of the fourth tube section, and the tube sections mentioned above are preferably all cylindrical tube sections. The size of the upper end of the middle through-hole also refers to the diameter of the upper end of the middle through-hole.
In at least one embodiment of the present disclosure, the size of the lower end of the through-center hole (i.e., the diameter of the lower end of the through-center hole) is larger than the size of the hole having the first aperture, preferably twice or more the size of the hole having the first aperture.
By means of the size setting, for example, two sands which just pass through the holes of the outer screen pipe can smoothly pass through the middle through hole when being arranged in parallel, and the blockage of the lower end of the middle through hole is avoided.
In at least one embodiment of the present disclosure, the size of the hole having the second aperture diameter is larger than the size of the hole having the first aperture diameter, but smaller than the size of the lower end of the through-center hole.
With this sizing, the apertures of the fourth pipe section enable passage of sand through the apertures of the outer screen, but the bottom end of the interior of the outer screen is inevitably filled with original sand, for example some larger sized sand, which the apertures of the fourth pipe section can block. These larger sized sands may be dropped into the second cavity formed by the second pipe segment.
In at least one embodiment of the present disclosure, the lower end of the outer screen can axially cover the lower end of the actuation end. The lower end of the outer screen has an excess length of pipe in the axial direction relative to the lower end of the actuation end.
In at least one embodiment of the present disclosure, the power plant, the first pipe section and the second pipe section have the same size in the radial direction, and the upper end of the actuation end has the same size in the radial direction as the lower end of the second pipe section. The power device is detachably connected with the first pipe section. The first pipe section is detachably connected with the second pipe section. The outer sieve tube and the filtering device are of split structures. The second pipe section is detachably connected with the execution end. The power plant may be powered by external cables or the like, which are not shown in fig. 1.
The aforementioned term "size" may be a diameter, a radius, etc., as long as they are uniform.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. The self-suction sand control screen pipe is characterized by comprising an outer screen pipe and a filtering device, wherein the outer screen pipe is sleeved outside the filtering device;
the outer screen includes a plurality of apertures having a first aperture diameter;
the filtering device comprises a power device, a first pipe section, a second pipe section and an execution end;
the power device, the first pipe section, the second pipe section and the execution end are arranged along the axial direction of the outer sieve tube;
the lower end of the power device is connected with the upper end of the first pipe section, the lower end of the first pipe section is connected with the upper end of the second pipe section, and the lower end of the second pipe section is connected with the execution end;
the lower end of the power device is provided with a driving part, the lower end of the driving part is connected with a third pipe section, the driving part and the third pipe section are arranged in the first pipe section, and the third pipe section extends from the lower end of the driving part to the lower end of the first pipe section;
the lower end of the first pipe section is connected with the upper end of the second pipe section through a partition plate;
a first cavity is formed among the first pipe section, the isolation plate, the third pipe section, the driving part and the power device;
the partition plate is provided with a central hole, a fourth pipe section extends out of the central hole, and the upper end of the fourth pipe section is communicated with the lower end of the third pipe section through the central hole;
the fourth pipe section is arranged inside the second pipe section, the pipe wall of the fourth pipe section and the lower end of the fourth pipe section are of an integral structure, and the pipe wall and the lower end of the fourth pipe section are both provided with a plurality of holes with second apertures;
the actuating end is a hemisphere with a middle through hole, the plane end of the hemisphere is connected with the lower end of the second pipe section, the upper end of the middle through hole and the plane end of the hemisphere are located on the same plane, and the size of the upper end of the middle through hole is larger than that of the lower end of the middle through hole.
2. The sand control screen of claim 1, wherein the upper end of the central throughbore has a dimension that is more than twice the radial dimension of the fourth tubular segment.
3. The sand control screen of claim 1 or 2, wherein the size of the lower end of the central through-hole is more than twice the size of the hole having the first bore diameter.
4. The sand control screen of claim 1 or 2, wherein the size of the holes having the second bore diameter is larger than the size of the holes having the first bore diameter but smaller than the size of the lower end of the through-center hole.
5. The sand control screen of claim 1 or 2, wherein the lower end of the outer screen is adapted to axially cover the lower end of the actuating end.
6. The sand control screen of claim 5, wherein the lower end of the outer screen has excess pipe sections in an axial direction relative to the lower end of the actuation end.
7. The sand control screen of claim 1 or 2, wherein the power unit, the first pipe section and the second pipe section have the same dimensions in a radial direction, and the upper end of the actuation end has the same dimensions in the radial direction as the lower end of the second pipe section.
8. The sand control screen of claim 1 or 2, wherein the drive section has a drive section throughbore disposed therein, the drive section throughbore being in communication with the first chamber, the drive section throughbore also being in communication with the third pipe section, the drive section throughbore having the same dimension as the radial dimension of the third pipe section.
9. The sand control screen of claim 1, wherein the power unit is removably coupled to the first pipe segment.
10. The sand control screen of claim 1, wherein the first pipe segment is removably coupled to the second pipe segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408067.7A CN108729888B (en) | 2018-05-02 | 2018-05-02 | Self-suction sand-proof screen pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810408067.7A CN108729888B (en) | 2018-05-02 | 2018-05-02 | Self-suction sand-proof screen pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108729888A CN108729888A (en) | 2018-11-02 |
| CN108729888B true CN108729888B (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810408067.7A Active CN108729888B (en) | 2018-05-02 | 2018-05-02 | Self-suction sand-proof screen pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108729888B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486734Y (en) * | 2001-04-29 | 2002-04-17 | 中国石油天然气股份有限公司 | Double sand holding bucket downhole bailing tub |
| CN204692060U (en) * | 2015-03-26 | 2015-10-07 | 重庆金宇恒科技有限公司 | A kind of low-resistance sand-proof oil-well pump |
| CN206668233U (en) * | 2017-04-11 | 2017-11-24 | 延长油田股份有限公司 | A kind of oil production filter |
| CN207048747U (en) * | 2017-10-27 | 2018-02-27 | 中国煤炭地质总局水文地质局 | A kind of sand control filter pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170204709A1 (en) * | 2013-08-13 | 2017-07-20 | Stanley Filter Co., LLC | Downhole tubing filter |
-
2018
- 2018-05-02 CN CN201810408067.7A patent/CN108729888B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486734Y (en) * | 2001-04-29 | 2002-04-17 | 中国石油天然气股份有限公司 | Double sand holding bucket downhole bailing tub |
| CN204692060U (en) * | 2015-03-26 | 2015-10-07 | 重庆金宇恒科技有限公司 | A kind of low-resistance sand-proof oil-well pump |
| CN206668233U (en) * | 2017-04-11 | 2017-11-24 | 延长油田股份有限公司 | A kind of oil production filter |
| CN207048747U (en) * | 2017-10-27 | 2018-02-27 | 中国煤炭地质总局水文地质局 | A kind of sand control filter pipe |
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| Publication number | Publication date |
|---|---|
| CN108729888A (en) | 2018-11-02 |
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