CN111927407A - V-shaped precise micro-seam self-cleaning sand-proof screen pipe - Google Patents
V-shaped precise micro-seam self-cleaning sand-proof screen pipe Download PDFInfo
- Publication number
- CN111927407A CN111927407A CN202010914412.1A CN202010914412A CN111927407A CN 111927407 A CN111927407 A CN 111927407A CN 202010914412 A CN202010914412 A CN 202010914412A CN 111927407 A CN111927407 A CN 111927407A
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- China
- Prior art keywords
- screen pipe
- branch pipe
- pipe body
- sand control
- cleaning sand
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- 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.)
- Pending
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- 238000004140 cleaning Methods 0.000 title claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000010618 wire wrap Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 239000010779 crude oil Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000012492 regenerant Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004181 pedogenesis Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying 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
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention belongs to the technical field of crude oil exploitation in the petroleum industry, and particularly relates to a V-shaped precise micro-seam self-cleaning sand control screen pipe which comprises a branch pipe body, screen pipe surface wires and a filtering device, wherein through holes are uniformly formed in the surface of the branch pipe body, a connecting pipe fitting is arranged at the bottom of the branch pipe body, the screen pipe surface wires are arranged on the outer wall of the branch pipe body, a V-shaped filtering groove is formed between the adjacent screen pipe surface wires, the filtering device is arranged in the middle of an inner cavity of the branch pipe body, and reinforcing ribs are arranged between the screen pipe surface wires and a support body.
Description
Technical Field
The invention relates to the technical field of crude oil exploitation in the petroleum industry, in particular to a V-shaped precise micro-seam self-cleaning sand control screen pipe.
Background
With the development of industrial modernization at an increasing speed, more and more steel pipes of different types are generated, and the petroleum screen pipe is one of the steel pipes.
The sieve tube is a steel tube special for oil and gas well cementing and is used for sealing and isolating an oil layer, a gas layer and a water layer; protecting the well wall; preventing blowout or collapse of well wall. The screen pipes are classified into surface screen pipes, technical screen pipes and reservoir screen pipes according to their uses. When drilling is started, after the upper surface soil formations are drilled, because the formations are soft and easy to collapse, in order to prevent blowout and ensure smooth drilling, a surface screen pipe needs to be laid. The depth of the surface screen can be as deep as several hundreds of screens, each of which can reach more than one thousand meters, but most wells do not exceed two hundred meters. Under the conditions that the bottom layer is firm, the pressure of oil, gas and water layers is ensured, and the drilling period is short, the surface sieve tube can not be arranged.
After the surface screen pipe is put into the well, various complex conditions such as well leakage, well collapse, high-pressure oil, gas, water layers and the like can be encountered in the process of continuously drilling, after conditioned mud and other measures are adopted, if the area is still invalid, a technical screen pipe is required to be put before drilling the complex stratum so as to isolate the complex stratum which is difficult to control and ensure the smooth drilling operation, and the technical screen pipe can not be put under the condition that the stratum is not complex and the drilling depth is not large.
The existing sand control screen pipe is high in manufacturing cost, poor in self-cleaning effect, easy to block, short in service life and capable of influencing construction in the using process, and therefore a novel sand control screen pipe is provided for solving the problems.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the problems associated with the prior art sand control screens.
Therefore, the invention aims to provide the V-shaped precise micro-seam self-cleaning sand control screen pipe which has a good self-cleaning effect, can prevent blockage, prolongs the service life and reduces the construction cost in the using process.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
the utility model provides a self-cleaning sand control screen pipe of accurate micro-crack of V type, its includes branch pipe body, screen pipe face silk and filter equipment, the even through-hole that is provided with in surface of branch pipe body, the bottom of branch pipe body is provided with connects the pipe fitting, the outer wall of branch pipe body is provided with screen pipe face silk, just be provided with V type filter-tank between the adjacent screen pipe face silk, be provided with filter equipment in the middle of the inner chamber of branch pipe body, be provided with the strengthening rib between screen pipe face silk and the support body.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: and the outer wall of the branch pipe body is provided with an anti-corrosion coating.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the outer diameter of the branch pipe body is 80-280 mm, and the length of the branch pipe body is 1-20 m.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the cross section of the screen pipe surface wire is triangular.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the screen pipe surface wire is connected with the branch pipe body through the wrap welding.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the inner cavity of the through hole is provided with a superfine filter screen.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the branch pipe body is made of low-carbon steel, and a zinc layer is sprayed on the surface of the screen pipe surface wire.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the filtering device is 4-6 filter discs, and the distance between the filter discs is 20-60 mm.
As a preferred scheme of the V-shaped precise micro-seam self-cleaning sand control screen pipe, the invention comprises the following steps: the filtering device is fixedly connected with the branch pipe body through pins for drilling at two ends.
Compared with the prior art, the invention has the beneficial effects that:
1. non-clogging property: the cross section of the screen pipe surface wire is triangular, the gap on the screen pipe is formed by two adjacent acute angles on the two surface wires, and when a solid passes through the screen pipe, the solid is in point contact with the two edges of the gap, so that theoretically, the solid particles on the screen pipe are either trapped on the screen pipe or pass through the gap of the screen pipe, and a third blockage state cannot be formed;
2. the strength is high: the screen pipe has high strength because the element adopts a welding-around structure of stainless steel wires, and can be cut on a grinding wheel cutting machine and can also be used for processing the end surface on a lathe without causing loosening deformation;
3. corrosion resistance: the corrosion resistance of neutral water, acidic water, alkaline water, regenerant caustic soda, hydrochloric acid, sulfuric acid, salt and the like is improved, and various filtering devices can be operated economically and safely.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the screen face wire of the present invention;
FIG. 3 is a schematic top view of the present invention.
In the figure; 100 branch pipes, 110 through holes, 120 reinforcing ribs, 130 connecting pipes, 140 anti-corrosion coatings, 200 screen pipe surface wires, 210V-shaped filter tanks and 300 filter devices.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides the following technical scheme: a V-shaped precise micro-seam self-cleaning sand control screen pipe comprises a branch pipe body 100, screen pipe surface wires 200 and a filtering device 300, wherein through holes 110 are uniformly formed in the surface of the branch pipe body 100, a connecting pipe fitting 130 is arranged at the bottom of the branch pipe body 100, the screen pipe surface wires 200 are arranged on the outer wall of the branch pipe body 100, a V-shaped filtering groove 210 is formed between every two adjacent screen pipe surface wires 200, the filtering device 300 is arranged in the middle of an inner cavity of the branch pipe body 100, and reinforcing ribs 120 are arranged between the screen pipe surface wires 200 and a support body;
preferably: the outer wall of the branch pipe body 100 is provided with an anti-corrosion coating 140, and for neutral water, acidic water, alkaline water, regenerants of caustic soda, hydrochloric acid, sulfuric acid, salt and the like, the anti-corrosion performance is improved, so that various filtering devices can be operated economically and safely.
Preferably: the outer diameter of the branch pipe body 100 is 80-280 mm, and the length of the branch pipe body is 1-20 m.
Preferably: the screen face wires 200 are triangular in cross-section, two adjacent acute angles on two screen face wires 200 form a point contact with the two sides of the slot when a solid passes through the screen, so theoretically, solid particles on the screen are either trapped on the screen or pass through the screen slot, and a third plugging state cannot be formed.
Preferably: the screen pipe surface wire 200 is connected with the branch pipe body 100 through the wire-wrapping welding, and is firm and durable, and the pressure resistance is stronger, and the service life cycle is longer.
Preferably: the inner cavity of the through hole 110 is provided with a superfine filter screen, so that secondary filtration is realized, and the efficiency of filtering and screening is improved.
Preferably: the branch pipe body 100 is made of low-carbon steel, the surface of the screen pipe surface wire 200 is sprayed with a zinc layer, a protective layer is formed through spraying treatment, and the appearance is attractive and clean.
Preferably: the filtering device 300 is provided with 4-6 filter discs, the distance between the filter discs is 20-60mm, and the number of the filter discs and the distance between the filter discs can be selected according to actual use.
Preferably: the filtering device 300 is fixedly connected with the branch pipe body 100 through the pins for drilling at two ends, so that the installation and the disassembly are convenient, the maintenance is convenient, and the maintenance cost is reduced.
The working principle is as follows: by connecting the pipe 130, the device is installed at the designated position, the cross section of the screen face wire 200 is triangular, the gap on the screen is formed by two adjacent acute angles on two face wires, when the solid passes through the screen, the solid forms point contact with the two sides of the gap, therefore, theoretically, the solid particles on the screen are either trapped on the screen or pass through the screen gap, and a third blocking state cannot be formed; the screen pipe has high strength because the element adopts a welding-around structure of stainless steel wires, and can be cut on a grinding wheel cutting machine and can also be used for processing the end surface on a lathe without causing loosening deformation; the corrosion resistance of neutral water, acidic water, alkaline water, regenerant caustic soda, hydrochloric acid, sulfuric acid, salt and the like is improved, and various filtering devices can be operated economically and safely.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides a self-cleaning sand control screen pipe of accurate slit of V type which characterized in that: including branch pipe body (100), screen pipe face silk (200) and filter equipment (300), the even through-hole (110) that is provided with in surface of branch pipe body (100), the bottom of branch pipe body (100) is provided with connects pipe fitting (130), the outer wall of branch pipe body (100) is provided with screen pipe face silk (200), just be provided with V type filter tank (210) between adjacent screen pipe face silk (200), be provided with filter equipment (300) in the middle of the inner chamber of branch pipe body (100), be provided with strengthening rib (120) between screen pipe face silk (200) and the support body.
2. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the outer wall of the branch pipe body (100) is provided with an anti-corrosion coating (140).
3. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the outer diameter of the branch pipe body (100) is 80-280 mm, and the length of the branch pipe body is 1-20 m.
4. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the cross section of the screen pipe surface wire (200) is triangular.
5. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the screen surface wire (200) is connected with the branch pipe body (100) through the wire-wrapping welding.
6. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the inner cavity of the through hole (110) is provided with a superfine filter screen.
7. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the branch pipe body (100) is made of low-carbon steel, and a zinc layer is sprayed on the surface of the screen pipe surface wire (200).
8. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the filtering device (300) is provided with 4-6 filter discs, and the distance between the filter discs is 20-60 mm.
9. The V-shaped precise micro-seam self-cleaning sand control screen pipe as claimed in claim 1, wherein: the filtering device (300) is fixedly connected with the branch pipe body (100) through pins for drilling at two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914412.1A CN111927407A (en) | 2020-09-03 | 2020-09-03 | V-shaped precise micro-seam self-cleaning sand-proof screen pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010914412.1A CN111927407A (en) | 2020-09-03 | 2020-09-03 | V-shaped precise micro-seam self-cleaning sand-proof screen pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111927407A true CN111927407A (en) | 2020-11-13 |
Family
ID=73309436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010914412.1A Pending CN111927407A (en) | 2020-09-03 | 2020-09-03 | V-shaped precise micro-seam self-cleaning sand-proof screen pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN111927407A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319606A (en) * | 2008-07-23 | 2008-12-10 | 詹其国 | Anti-pressure anti-torsion high-strength V-groove self-cleaning sand-proof screen pipe |
| CN201170088Y (en) * | 2008-02-04 | 2008-12-24 | 詹其国 | Filtering components of V type accurate micro-seam self-cleaning sand control screen |
| US20100224359A1 (en) * | 2009-03-06 | 2010-09-09 | Namhyo Kim | Subterranean Screen with Varying Resistance to Flow |
| CN206397484U (en) * | 2017-01-13 | 2017-08-11 | 西南石油大学 | A kind of adjustable compound sand-prevention screen pipe of precision |
| US20180073333A1 (en) * | 2016-09-15 | 2018-03-15 | Bryant Alan Arterbury | Well Screen Design For Enhanced Horizontal Flow Filtration Control |
| CN208669283U (en) * | 2018-05-24 | 2019-03-29 | 山东天厚石油科技有限责任公司 | A kind of corrosion-proof high-temp sand screen |
| CN211008586U (en) * | 2019-10-29 | 2020-07-14 | 中国石油化工股份有限公司 | Down-hole seam punching screen composite filter |
-
2020
- 2020-09-03 CN CN202010914412.1A patent/CN111927407A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170088Y (en) * | 2008-02-04 | 2008-12-24 | 詹其国 | Filtering components of V type accurate micro-seam self-cleaning sand control screen |
| CN101319606A (en) * | 2008-07-23 | 2008-12-10 | 詹其国 | Anti-pressure anti-torsion high-strength V-groove self-cleaning sand-proof screen pipe |
| US20100224359A1 (en) * | 2009-03-06 | 2010-09-09 | Namhyo Kim | Subterranean Screen with Varying Resistance to Flow |
| US20180073333A1 (en) * | 2016-09-15 | 2018-03-15 | Bryant Alan Arterbury | Well Screen Design For Enhanced Horizontal Flow Filtration Control |
| CN206397484U (en) * | 2017-01-13 | 2017-08-11 | 西南石油大学 | A kind of adjustable compound sand-prevention screen pipe of precision |
| CN208669283U (en) * | 2018-05-24 | 2019-03-29 | 山东天厚石油科技有限责任公司 | A kind of corrosion-proof high-temp sand screen |
| CN211008586U (en) * | 2019-10-29 | 2020-07-14 | 中国石油化工股份有限公司 | Down-hole seam punching screen composite filter |
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Application publication date: 20201113 |
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