CN118309396A - Spiral lock catch type sand control screen pipe for oil and gas well completion - Google Patents
Spiral lock catch type sand control screen pipe for oil and gas well completion Download PDFInfo
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- CN118309396A CN118309396A CN202410639838.9A CN202410639838A CN118309396A CN 118309396 A CN118309396 A CN 118309396A CN 202410639838 A CN202410639838 A CN 202410639838A CN 118309396 A CN118309396 A CN 118309396A
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- 238000005493 welding type Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 44
- 239000010410 layer Substances 0.000 claims description 41
- 239000002184 metal Substances 0.000 claims description 28
- 238000004080 punching Methods 0.000 claims description 24
- 239000002131 composite material Substances 0.000 claims description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims description 17
- 239000010935 stainless steel Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 11
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- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000007547 defect Effects 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 27
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- 238000011156 evaluation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
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Classifications
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- 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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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
The invention relates to a spiral lock catch type sand control screen for well completion of an oil and gas well, which consists of a base pipe, a filtering jacket and a protective sleeve. The filter jacket is sleeved on the outer wall of the base pipe, and the protective sleeve is sleeved on the filter jacket; the filtering jacket and the protective sleeve are both spiral lock catches; or the filter jacket is a spiral lock catch type, and the protective sleeve is a spiral welding type. The invention can thoroughly eliminate all defect problems related to welding, ensure the manufacturing quality to be completely controllable, and avoid sand prevention failure; meanwhile, the spiral lock catch type sand control screen has long service life and can be suitable for complex oil and gas wells.
Description
Technical Field
The invention relates to the technical field of oil and gas well completion, in particular to a spiral lock catch type sand control screen for oil and gas well completion.
Background
At present, the well completion of the oil and gas well commonly adopts a regular filter screen type sand control screen, which comprises a multi-layer composite filter screen type sand control pipe, a CMS metal screen cloth screen pipe, an MGC multi-layer composite filter screen series screen pipe, an HCC composite sand control screen pipe, a Excluder screen pipe, a PoroMax screen pipe, a PetroGuard wire-wound screen cloth composite screen pipe and the like. The product adopts the multi-layer metal wire woven net composite as the filtering material, so that the woven regular filter holes have stable structure, strong deformation resistance, high uniform permeability of the filter holes, reliable sand prevention and good sand blocking effect. However, in the practical production and application of oil and gas wells, the screen damage, large sand output from a shaft and sand prevention failure accidents often occur to the screen, and the requirements of high and stable production of the oil and gas wells cannot be met.
The filter screen type sand control screen pipe mainly comprises a base pipe, a filter layer and a protective sleeve. The base pipe is an oil pipe provided with a plurality of round through holes and plays a role of an inner supporting framework; the filtering layer is generally wrapped by 3-7 layers of stainless steel woven silk screens layer by layer and then welded into a filtering pipe by resistance welding straight seams, and the filtering pipe is sleeved outside the base pipe to control sand and filter; the protective sleeve is usually a straight seam welded punching pipe or a spiral welded mesh pipe with the wall thickness of 1.2-1.5 mm, and has the protection function on the sieve tube and the prefiltering function.
The sand control of oil and gas well usually controls the median value of stratum sand diameter to be 80-300 mu m, and adopts a mat-type net or square hole net with mesh size of 50-200 meshes as a filtering control layer filter screen of the sieve tube, wherein the diameters of warp and weft wires are only 0.08-0.20 mm, the structural strength is not high, and the mesh is easy to deform and damage in the use process. For this purpose, one or more layers of coarse filter screen are compounded in and outside the filter control layer filter screen to play the roles of supporting, protecting the filter control layer filter screen and distributing fluid. Or the protection is further enhanced and the secondary filtering effect is achieved by supporting the multi-layer coarse filter screen by a wire-wound screen pipe and a punching pipe.
The reasons for failure of the filter screen type sand control screen are approximately:
(1) The welding quality of the filter screen of the filter control layer is difficult to ensure:
The filter screen of the filtering control layer is overlapped with the rough filter screen of the inner side support protection and the outer side support protection layer by layer and then is wrapped outside the base pipe, and resistance welding is carried out in a straight seam lapping mode, so that the porous medium for depth filtration is formed. Because of interlayer pores instead of continuous dense materials after overlapping and wrapping the filter screens layer by layer, the complete penetration and mutual fusion of all the metal wires of the filter screen layers in the weld joint cannot be ensured.
In addition, the filter screen of the filter control layer is several times smaller than the diameter of the rough filter screen of the inner and outer support protection, the welding of the composite filter screen belongs to the typical welding of different thickness materials, and the filter screen metal wire of the filter control layer is extremely easy to generate defects such as fusing, incomplete welding, welding leakage, air holes, inclusion, peroxidation and the like, and welding defects exist in welding seams. Meanwhile, the filter screen of the filter control layer is wrapped between the coarse filter screens of the inner side support protection and the outer side support protection, and welding defects in welding seams cannot be subjected to nondestructive detection and evaluation.
(2) The filter control layer filter screen has low mechanical strength and is easy to damage:
The temperature of the underground stratum of the oil gas well is tens to hundreds of degrees higher than the temperature of the ground, and the underground stratum of the oil gas well can be subjected to expansion with heat and contraction with cold after being put into the oil gas well under a screen pipe. Because the length of the sieve tube is large (usually 3-10 m for each sieve tube, and the total length is hundreds to thousands of meters), the thermal deformation amount is large, the wire diameter of the filter screen of the filter control layer is the thinnest, and the welding points are very easy to pull off, so that the meshes are damaged. Meanwhile, the sieve tube bears high pressure and internal and external pressure difference of a shaft in the injection and production processes of the oil and gas well, and the dangerous point of strength damage is welding spots and metal wires of a filter screen of the filtering control layer, so that the filter screen is easy to break.
(3) Bias flow and erosion damage of produced fluid:
In the production process of the oil and gas well, fine sand and medium sand particles with larger particle sizes form a filter cake sand bridge outside the sieve tube in the sand production of the stratum, and muddy silt and fine silt with smaller particle sizes invade the filter layer of the composite filter screen to cause local blockage of a fluid channel, so that fluid flows unevenly.
If the filter control layer screen has weld defects, mesh deformation and breakage, fluid in the wellbore will preferentially flow from the broken hole with the least resistance. And as the production time increases, the filter resistance increases due to the gradual accumulation of muddy silt and fine silt in the filter layer of the composite filter screen of the sieve tube, and the drift of the damaged holes is continuously aggravated. The result of this vicious circle forms that the oil gas water carries stratum sand to wash out the hole at a high speed, pierces the screen pipe, and the oil gas well produces sand in a large amount and makes sand control inefficacy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a spiral lock catch type sand control screen pipe for oil and gas well completion, which can avoid sand control failure.
In order to solve the problems, the spiral lock catch type sand control screen for oil and gas well completion is characterized in that: the sand control screen consists of a base pipe, a filtering jacket and a protective sleeve; the filter jacket is sleeved on the outer wall of the base pipe, and the protective sleeve is sleeved on the filter jacket; the filtering jacket and the protective sleeve are both spiral lock catches; or the filter jacket is a spiral lock catch type, and the protective sleeve is a spiral welding type.
The base pipe is a standard oil pipe or a sleeve pipe, round through holes or long round through holes are uniformly distributed on the pipe wall of the base pipe to serve as fluid channels, and the shape, the size and the distribution mode of the through holes are optimally designed according to the oil and gas well yield and the pipe column strength.
The filter jacket is a filter pipe formed by continuous spiral locking of a strip-shaped filter material; the plate-strip filter material is one of a multi-layer composite filter screen, a sintered metal composite screen, a sintered metal fiber felt and a stainless steel sheet metal strip with filter pores formed by laser cutting, chemical etching processing or precise machining, and is pressed or rolled into a corrugated filter medium, wherein the total thickness of the corrugated filter medium is 4 times or more of the thickness of the original plate-strip filter material.
The filter jacket is formed by spirally locking a plurality of strip-shaped single-layer filter materials, or is formed by integrally spirally locking a plurality of strip-shaped multi-layer filter materials which are overlapped together, or is formed by respectively spirally locking a plurality of strip-shaped single-layer filter materials, and then is sleeved and assembled into a whole.
When the filter jacket and the protective sleeve are both spiral lock catches, the spiral lift angle of the lock catch connecting seam is 30 degrees plus or minus 15 degrees.
The filtering jacket and the protective sleeve are in an outer lock catch structure, namely lock catch seam materials are located on the outer side surface of the pipe body, and the diameter of the spiral lock catch seam is larger than the inner diameter of the pipe body materials.
The spiral lock connection seam I of filtering jacket is the same with the spiral lock connection seam II of protective sheath revolve to the same.
When the filter jacket is in a spiral lock type, and the protective sleeve is in a spiral welding type, the spiral lock connection joint III of the filter jacket is in the same rotation direction as the spiral welding joint of the protective sleeve.
The protective sleeve is a perforated pipe formed by punching a stainless steel metal sheet belt and then spirally locking; the punching mode is one of round through holes, square through holes, shutter holes and wing slits.
The stainless steel sheet metal strip of the protective sleeve adopts a spiral lock catch mode when the thickness is less than or equal to 0.6mm, and adopts a conventional spiral welding mesh pipe or straight welding punching pipe when the thickness is more than or equal to 0.6 mm.
When the protective sleeve is in a spiral lock catch type, the punched stainless steel sheet metal strip is pressed or rolled into a corrugated material, and the total thickness of the corrugated material is 4 times or more of the thickness of the original sheet metal strip.
And after the filter jacket and the protective sleeve are assembled, reducing and extruding forging is carried out, so that the assembly gap between the filter jacket and the protective sleeve is eliminated, and the outer diameter of the sieve tube reaches the design size requirement.
Compared with the prior art, the invention has the following advantages:
1. The invention makes the strip filter material into the filter jacket in the form of continuous spiral lock catch, avoids the welding process, thoroughly eliminates all the defect problems related to welding, and ensures the complete control of the manufacturing quality.
2. The continuous spiral locking structure automatically compensates for thermal expansion and cold contraction deformation.
The continuous spiral lock catch structure of the filter jacket has excellent flexibility, and can automatically compensate thermal expansion and cold contraction deformation when the environmental temperature is greatly changed, so that hidden danger that the filter material is pulled out of a metal wire, deformed meshes and damaged due to deformation of the screen pipe is eliminated.
3. The spiral lock catch type sand control screen has long service life.
The filtering jacket and the protective sleeve are formed by using the plate-band type material spiral lock catches, the material is tightly packed, and the dimensional accuracy of the parts is high. Meanwhile, the filter jacket and the protective sleeve are assembled and then subjected to diameter shrinkage and extrusion forging, so that the assembly gap between the filter jacket and the protective sleeve is eliminated to form a complete whole, the internal pores of the filter jacket are uniform, the strength and the anti-explosion performance are greatly improved, the risks of broken wires, breakage, fluid bias flow and complete failure of a flushing screen are eliminated, and the long-term stable production of the screen is ensured.
4. Is suitable for complex oil and gas wells.
The spiral lock catch type sand control screen pipe has the structural characteristics of a continuous spiral corrugated pipe, namely excellent flexibility, and particularly outstanding torsion resistance, bending resistance and thermal shock resistance, and is particularly suitable for well conditions of horizontal wells or sidetrack branch wells with small curvature radius, directional wells and large changes in environmental temperature, wherein expansion and contraction deformation is required to be automatically compensated, and sedimentation deformation exists in a well bore or a casing pipe. Meanwhile, the invention can also be applied to well completion sand prevention of coal-bed gas wells, natural gas hydrate exploitation wells, geothermal wells and brine wells.
5. High cost performance.
The spiral lock catch type sand control screen pipe has the advantages of simple structure, low production cost, high cost performance, no precision welding process, high production efficiency, reliable quality and realization of mechanized and automatic production. Meanwhile, the test is carried out by adopting conventional tools such as calipers, plugs and the like, and technical risks are avoided.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Fig. 1 is a schematic structural diagram of the present invention (structural combination of spiral-lock filter jacket and spiral-lock protective sleeve).
Fig. 2 is a side view of the present invention (structural combination of a spiral-lock filter jacket and a spiral-lock protective sheath).
Fig. 3 is a schematic structural view of the present invention (structural combination of spiral-lock filter jacket and spiral welding type protective sheath).
Fig. 4 is a side view of the present invention (structural combination of spiral-lock filtration jacket and spiral-welded protective sheath).
In the figure: 1-a base pipe; 2-filtering jacket; 21-a spiral lock connection joint I; 22-a spiral lock connection joint III; 3-a protective sleeve; 31-a spiral lock connection joint II; 32-spiral weld.
Detailed Description
As shown in fig. 1-4, a spiral lock catch type sand control screen for oil and gas well completion comprises a base pipe 1, a filter jacket 2 and a protective sleeve 3. The filter jacket 2 is sleeved on the outer wall of the base pipe 1, and the filter jacket 2 is sleeved with a protective sleeve 3; the filtering jacket 2 and the protective sleeve 3 are both spiral lock catches; or the filter jacket 2 is of a spiral lock type, and the protective sleeve 3 is of a spiral welding type.
Wherein: the base pipe 1 is a standard oil pipe or a sleeve pipe, round through holes or long round through holes are uniformly distributed on the pipe wall and used as fluid channels, and the shape, the size and the distribution mode of the through holes are optimally designed according to the oil and gas well yield and the pipe column strength.
The filter jacket 2 is a filter pipe formed by continuous spiral locking and buckling of a plate-strip-shaped filter material; the plate-strip-shaped filter material is one of a multi-layer composite filter screen, a sintered metal composite screen, a sintered metal fiber felt and a stainless steel sheet metal strip with filter pores formed by laser cutting, chemical etching processing or precise machining, and is pressed or rolled into a corrugated filter medium, wherein the total thickness of the corrugated filter medium is 4 times or more of that of the original plate-strip-shaped filter material, so that the highest point of a connecting seam after spiral locking is ensured to be leveled with the outer surface of the corrugated filter medium or slightly lower than the highest point of the connecting seam after spiral locking, and smooth assembly of a product is ensured.
The filter jacket 2 is formed by spiral locking of a plurality of single-layer filter materials in a plate-strip shape, or is formed by overlapping a plurality of multi-layer filter materials in a plate-strip shape together in an integral spiral locking manner, or is formed by respectively spiral locking of a plurality of single-layer filter materials in a plate-strip shape and then is sleeved and assembled into a whole.
When the filter jacket 2 and the protective sleeve 3 are both spiral lock catches, the spiral angle of the lock catch connecting seam is 30 degrees plus or minus 15 degrees. The filter jacket 2 and the protective sleeve 3 are both in an outer locking structure, namely locking seam materials are positioned on the outer side surface of the pipe body, and the diameter of the spiral locking seam is larger than the inner diameter of the pipe body materials. The spiral lock connection seam I21 of the filter jacket 2 and the spiral lock connection seam II 31 of the protective sleeve 3 have the same rotation direction, namely left rotation or right rotation.
When the filter jacket 2 is of a spiral lock type and the protective sleeve 3 is of a spiral welding type, the spiral lock connecting seam III 22 of the filter jacket 2 and the spiral welding seam 32 of the protective sleeve 3 have the same rotation direction, namely left rotation or right rotation.
The protective sleeve 3 is a perforated pipe formed by a spiral lock catch after punching a stainless steel metal sheet belt; the punching mode is one of round through holes, square through holes, blind holes and wing slits (also called bridge punching slits).
The stainless steel sheet metal strip of the protective sleeve 3 adopts a spiral locking mode when the thickness is less than or equal to 0.6mm, and adopts a conventional spiral welding mesh pipe or straight welding punching pipe when the thickness is more than or equal to 0.6 mm.
When the protective sleeve 3 is a spiral lock catch, the punched stainless steel sheet metal strip is pressed or rolled into a corrugated material, and the total thickness of the corrugated material is 4 times or more of the thickness of the original sheet metal strip, so that the highest point of the connecting seam after the spiral lock catch is ensured to be level with the outer surface of the corrugated material or slightly lower than the highest point, and the appearance of the product is level.
After the filter jacket 2 and the protective sleeve 3 are assembled, reducing and extruding forging are carried out, so that the assembly gap between the filter jacket 2 and the protective sleeve is eliminated, and the outer diameter of the sieve tube reaches the design size requirement.
Example 1: the structure combination of the spiral locking type filtering jacket and the spiral locking type protective sleeve.
As shown in fig. 1-2, a spiral lock catch type sand control screen for oil and gas well completion comprises a base pipe 1, a filter jacket 2 and a protective sleeve 3. The filter jacket 2 is sleeved on the outer wall of the base pipe 1, and the filter jacket 2 is sleeved with the protective sleeve 3.
The base pipe 1 adopts a standard oil pipe or a sleeve pipe, oblong holes are uniformly distributed on the outer surface to serve as fluid channels (circular through holes and the like, and the shape, the size and the distribution mode of the through holes are optimally designed according to the oil gas well yield and the tubular column strength.
The filter jacket 2 is a porous medium pipe formed by spiral locking a plate-shaped five-layer composite filter screen, and the filter medium material can be selected from one of a plurality of forms, such as a multi-layer composite filter screen, a sintered metal fiber mat and a stainless steel sheet metal belt with filter pores formed by laser cutting, chemical etching processing or precise machining processing.
The protective sleeve 3 is a porous pipe formed by spiral locking after a stainless steel sheet is provided with a punching slot (also called bridge punching slot). The punching mode can also be selected from round through holes, square through holes, shutter holes and the like.
The spiral lock catches of the filter jacket 2 and the protective sleeve 3 are both in a left-handed or right-handed direction.
After the filter jacket 2 and the protective sleeve 3 are assembled, the diameter reduction and the extrusion forging are required to be carried out, the assembly gap between the filter jacket 2 and the protective sleeve is eliminated, and the outer diameter of the sieve tube reaches the design size requirement.
Taking a 2-7/8' sand control pipe commonly used in oil and gas well completion as an example, the technical scheme of the invention is clearly described. The technical indexes of the base pipe 1, the filtering jacket 2, the protective sleeve 3 and the spiral lock catch type sand control screen pipe are as follows:
Base pipe 1: API 5CT PSL1; the oil pipe specification is 2-7/8'. Times.5.51 NU, N80; the outer diameter is 73.02mm; the wall thickness is 5.51mm; length 9.6m; punching a slotted hole 2X 50.8 mm; the aperture ratio is 6.8%.
Filter jacket 2: the filter medium is a five-layer composite filter screen; the width of the banded filter screen is 122.5mm, and the thickness of the filter screen is 1.7mm; jacket thickness 6.8mm; the filtering precision is 125 mu m; an inner diameter of 74.5mm; the outer diameter is 88.6mm; a length of 3850mm (2 pieces); the spiral direction is left-handed, spiral lock catches; helix angle 26.1 °; material 304L.
Protective sheath 3: material 304L; the thickness is 0.6mm, and the plate band width is 122.5mm; the punching mode is a slot (gap 1.2 mm); the punching plate has a belt thickness of 2.4mm; an inner diameter of 90.5mm; the outer diameter is 95.3mm; a length of 3850mm (2 pieces); the spiral direction is left-handed, spiral lock catches; the helix angle is 24.2 °.
Spiral lock catch type sand control screen pipe: the outer diameter of the screen pipe after the diameter reduction and the extrusion forging is 93.4mm.
Example 2: the structure combination of the spiral locking type filtering jacket and the spiral welding type protective sleeve.
As shown in fig. 3-4, a spiral lock catch type sand control screen for oil and gas well completion is composed of a base pipe 1, a filter jacket 2 and a protective sleeve 3. The filter jacket 2 is sleeved on the outer wall of the base pipe 1, and the filter jacket 2 is sleeved with the protective sleeve 3.
The base pipe 1 adopts a standard oil pipe or a sleeve pipe, round through holes (also can be oblong holes and the like) are uniformly distributed on the outer surface to serve as fluid channels, and the shape, the size and the distribution mode of the through holes are optimally designed according to the oil and gas well yield and the tubular column strength.
The filter jacket 2 is a porous medium pipe formed by spiral locking a plate-shaped five-layer composite filter screen, and the filter medium material can be selected from one of a plurality of forms, such as a multi-layer composite filter screen, a sintered metal fiber mat and a stainless steel sheet metal belt with filter pores formed by laser cutting, chemical etching processing or precise machining processing.
The protective sleeve 3 is a porous pipe formed by spiral welding after punching round through holes on a stainless steel sheet. The punching mode can also be selected from a slot (also called bridge punching), a square through hole, a shutter hole and the like.
The spiral lock catches of the filter jacket 2 and the protective sleeve 3 are both in a left-handed or right-handed direction.
After the filter jacket 2 and the protective sleeve 3 are assembled, the diameter reduction and the extrusion forging are required to be carried out, the assembly gap between the filter jacket 2 and the protective sleeve is eliminated, and the outer diameter of the sieve tube reaches the design size requirement.
Taking a 2-7/8' sand control pipe commonly used in oil and gas well completion as an example, the technical scheme of the invention is clearly described. The technical indexes of the base pipe 1, the filtering jacket 2, the protective sleeve 3 and the spiral lock catch type sand control screen pipe are as follows:
Base pipe 1: API 5CT PSL1; the oil pipe specification is 2-7/8'. Times.5.51 NU, N80; the outer diameter is 73.02mm; the wall thickness is 5.51mm; length 9.6m; punching a round hole phi 10 mm; the aperture ratio is 6.8%.
Filter jacket 2: the filter medium is a five-layer composite filter screen; the width of the banded filter screen is 122.5mm, and the thickness of the filter screen is 1.7mm; jacket thickness 6.8mm; the filtering precision is 125 mu m; an inner diameter of 74.5mm; the outer diameter is 88.6mm; a length of 3850mm (2 pieces); the spiral direction is left-handed, spiral lock catches; helix angle 26.1 °; material 304L.
Protective sheath 3: material 304L; the thickness is 1.5mm, and the plate band width is 152.4mm; the punching mode is a round hole phi 10 mm; the punching plate has a belt thickness of 1.5mm; an inner diameter of 90.5mm; the outer diameter is 93.5mm; a length of 3850mm (2 pieces); the spiral direction is left-handed, and spiral welding is performed; helix angle 31.3 °.
Spiral lock catch type sand control screen pipe: the outer diameter of the screen pipe after the diameter reduction and the extrusion forging is 91.6mm.
Claims (12)
1. A spiral lock catch type sand control screen pipe for oil and gas well completion is characterized in that: the sand control screen consists of a base pipe (1), a filtering jacket (2) and a protective sleeve (3); the filter jacket (2) is sleeved on the outer wall of the base pipe (1), and the protective sleeve (3) is sleeved on the filter jacket (2); the filtering jacket (2) and the protective sleeve (3) are both spiral lock catches; or the filter jacket (2) is a spiral lock catch type, and the protective sleeve (3) is a spiral welding type.
2. The spiral lock sand control screen for an oil and gas well completion of claim 1, wherein: the base pipe (1) is a standard oil pipe or a sleeve pipe, round through holes or long round through holes are uniformly distributed on the pipe wall of the base pipe to serve as fluid channels, and the shape, the size and the distribution mode of the through holes are optimally designed according to the oil gas well yield and the pipe column strength.
3. The spiral lock sand control screen for an oil and gas well completion of claim 1, wherein: the filter jacket (2) is a filter pipe formed by continuous spiral locking of a strip-shaped filter material; the plate-strip filter material is one of a multi-layer composite filter screen, a sintered metal composite screen, a sintered metal fiber felt and a stainless steel sheet metal strip with filter pores formed by laser cutting, chemical etching processing or precise machining, and is pressed or rolled into a corrugated filter medium, wherein the total thickness of the corrugated filter medium is 4 times or more of the thickness of the original plate-strip filter material.
4. The spiral lock sand control screen for an oil and gas well completion of claim 3, wherein: the filter jacket (2) is formed by spirally locking a plurality of strip-shaped single-layer filter materials, or is formed by integrally spirally locking a plurality of strip-shaped multi-layer filter materials which are overlapped together, or is formed by respectively spirally locking a plurality of strip-shaped single-layer filter materials and then is sleeved and assembled into a whole.
5. The spiral lock sand control screen for an oil and gas well completion of claim 1, wherein: when the filter jacket (2) and the protective sleeve (3) are both spiral lock catches, the spiral angle of the lock catch connecting seam is 30 degrees plus or minus 15 degrees.
6. The spiral lock type sand control screen for oil and gas well completion of claim 5, wherein: the filtering jacket (2) and the protective sleeve (3) are both in an outer locking structure, namely locking seam materials are located on the outer side surface of the pipe body, and the diameter of the spiral locking seam is larger than the inner diameter of the pipe body materials.
7. The spiral lock sand control screen for an oil and gas well completion of claim 6, wherein: the spiral lock connection joint I (21) of the filter jacket (2) and the spiral lock connection joint II (31) of the protective sleeve (3) have the same rotation direction.
8. The spiral lock sand control screen for an oil and gas well completion of claim 1, wherein: when the filter jacket (2) is in a spiral lock type, and the protective sleeve (3) is in a spiral welding type, a spiral lock connection joint III (22) of the filter jacket (2) and a spiral welding joint 32 of the protective sleeve (3) have the same rotation direction.
9. The spiral lock sand control screen for an oil and gas well completion of claim 1, wherein: the protective sleeve (3) is a perforated pipe formed by punching a stainless steel metal sheet belt and then spirally locking; the punching mode is one of round through holes, square through holes, shutter holes and wing slits.
10. The spiral lock sand control screen for an oil and gas well completion of claim 9, wherein: the stainless steel sheet metal strip of the protective sleeve (3) adopts a spiral lock catch mode when the thickness is less than or equal to 0.6mm, and adopts a conventional spiral welding mesh pipe or straight welding punching pipe when the thickness is more than or equal to 0.6 mm.
11. The spiral lock sand control screen for an oil and gas well completion of claim 10, wherein: when the protective sleeve (3) is a spiral lock catch type, the punched stainless steel sheet metal strip is pressed or rolled into a corrugated material, and the total thickness of the corrugated material is 4 times or more of the thickness of the original sheet metal strip.
12. The spiral lock sand control screen for an oil and gas well completion of claim 1, wherein: and the filter jacket (2) and the protective sleeve (3) are assembled and then subjected to diameter reducing extrusion forging, so that the assembly gap between the filter jacket and the protective sleeve is eliminated, and the outer diameter of the sieve tube reaches the design size requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410639838.9A CN118309396A (en) | 2024-05-22 | 2024-05-22 | Spiral lock catch type sand control screen pipe for oil and gas well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410639838.9A CN118309396A (en) | 2024-05-22 | 2024-05-22 | Spiral lock catch type sand control screen pipe for oil and gas well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118309396A true CN118309396A (en) | 2024-07-09 |
Family
ID=91724794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410639838.9A Pending CN118309396A (en) | 2024-05-22 | 2024-05-22 | Spiral lock catch type sand control screen pipe for oil and gas well completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118309396A (en) |
-
2024
- 2024-05-22 CN CN202410639838.9A patent/CN118309396A/en active Pending
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