CN211573490U - High-precision multi-layer protection spiral sand filtering pipe - Google Patents
High-precision multi-layer protection spiral sand filtering pipe Download PDFInfo
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- CN211573490U CN211573490U CN201922468415.2U CN201922468415U CN211573490U CN 211573490 U CN211573490 U CN 211573490U CN 201922468415 U CN201922468415 U CN 201922468415U CN 211573490 U CN211573490 U CN 211573490U
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Abstract
The utility model relates to a spiral sand screen of high-accuracy multilayer protection. The technical scheme is as follows: one end of the base pipe is connected with an oil pipe coupling through threads, a screen filtering layer is sleeved on the outer side of the base pipe, a wire winding filtering layer is sleeved on the outer side of the screen filtering layer, an outer protective layer is sleeved on the outer side of the wire winding filtering layer, end rings are respectively arranged at two ends of the screen filtering layer, the wire winding filtering layer and the outer protective layer, and filtering holes are uniformly formed in the screen filtering layer and the wire winding filtering layer. The utility model has the advantages that: the utility model discloses filter area is big, the permeability is high, be equipped with the side flow hole on the outer protective layer, the sand control filter layer is punctured when avoiding going into the well, hang bad sand control construction failure who arouses, the injury that causes the stratum in the well completion in-process that significantly reduces, the base pipe hole has evenly been seted up on the base pipe, the base pipe hole is spiral distribution on the base pipe, the permeability is high, effective control hydrocarbon reservoir goes out the sand, prevent that the wall of a well from collapsing and ensure the long-term production of oil gas well, improves oil well operation benefit.
Description
Technical Field
The utility model relates to a petroleum industry equipment, in particular to spiral sand screen of high-accuracy multilayer protection.
Background
At present, most of oil fields in China are heterogeneous and multi-oil-layer sandstone oil reservoirs, and for oil and gas wells of loose sandstone oil reservoirs, whether the wells are vertical wells, inclined wells or horizontal wells, sand production of the oil wells is one of the problems frequently encountered in oil field development. The sand production of the oil well is more harmful, the yield of the oil well is greatly reduced, the underground pipe column is seriously damaged, the operation cost is increased sharply, and the economic loss is serious. In order to prevent damages caused by stratum sand production (impeller abrasion, pump efficiency reduction, mechanical part abrasion, pipeline blockage, production interruption and the like), a sand control pipe needs to be put in for sand control, no matter wound metal or embedded metal sand screens are in the market at present, the sand control effect is good in thin oil wells and wells with low mud content, but the effect is common in thick oil wells and wells with high mud content, the base pipe is low in strength due to the fact that sand filtering holes are formed in the base pipe, the strength of the sand filtering pipe is low, stratum collapse can be caused by serious sand production, the sleeve pipe deforms, the yield of the oil and gas wells is reduced, and sand control construction failure caused by the fact that a sand control filtering layer is punctured and hung when the oil and gas wells are put in the well can occur, the existing sand filtering pipes are fixed with the base pipe in a split mode through welding one by one, the welding times are many.
Disclosure of Invention
The utility model aims at providing a spiral sand screen of high accuracy multilayer protection to the above-mentioned defect that prior art exists, filter area is big, the permeability is high, prevent that stifled ability is strong, longe-lived.
The technical scheme is as follows: including the tubing coupling, the parent tube, the end link, the screen cloth filter layer, the wire winding filter layer, outer protective layer, be equipped with the screw thread at the both ends of parent tube, there is the tubing coupling one end of parent tube through threaded connection, the outside cover of parent tube is equipped with the screen cloth filter layer, the outside cover of screen cloth filter layer is equipped with the wire winding filter layer, the outside cover of wire winding filter layer is equipped with outer protective layer, be equipped with the end link respectively at the both ends of screen cloth filter layer, wire winding filter layer, outer protective layer, filter holes have evenly been seted up on screen cloth.
Preferably, the length of the screen filtering layer, the length of the wire winding filtering layer and the length of the outer protective layer are consistent, and the two ends of the screen filtering layer, the wire winding filtering layer and the two ends of the outer protective layer are flush.
Preferably, the two ends of the screen filtering layer, the wire winding filtering layer and the outer protective layer are respectively welded and fixed with the end rings.
Preferably, the outer protective layer is uniformly provided with lateral flow holes.
Preferably, the side flow holes on the outer protective layer are bridge type side flow holes formed by surface stretching and partially inwards concave from the outer surface, and double-side flow seams are formed.
Preferably, the base pipe is uniformly provided with base pipe holes, and the base pipe holes are spirally distributed on the base pipe.
Preferably, the wire-wound filter layer is provided with two layers, and the diameter of the filter hole of the outer wire-wound filter layer is larger than that of the filter hole of the inner wire-wound filter layer.
The utility model has the advantages that: the utility model discloses filter area is big, the permeability is high, prevent stifled strong, long-lived, the utility model discloses a multiple filtration sand control, the sand control is effectual, effectively protect the hydrocarbon reservoir, be equipped with the side flow hole on the outer protective layer, the sand control filter layer is punctured when avoiding going into the well, hang bad and the sand control construction failure who arouses, the injury that causes the stratum among the well completion process that significantly reduces, can guarantee that the intercommunication between hydrocarbon reservoir and the well is unblocked, the base pipe hole has evenly been seted up on the base pipe, the base pipe hole is spiral distribution on the base pipe, the permeability is high, effectively control the hydrocarbon reservoir goes out the sand, prevent that the wall of a well from collapsing and ensure the long-term production of oil gas well.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of an outer protective layer;
FIG. 3 is a schematic view of a side-flow orifice configuration;
FIG. 4 is a schematic structural view of a base pipe;
FIG. 5 is a schematic view of the structure of the outer protective layer of example 2;
in the figure: the oil pipe coupling comprises a pipe coupling 1, a base pipe 2, an end ring 3, a screen filtering layer 4, a wire winding filtering layer 5, an outer protective layer 6, a filtering hole 7, a lateral flow hole 8, a lateral flow seam 9 and a base pipe hole 10.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1:
as shown in figure 1, the utility model comprises an oil pipe coupling 1, a base pipe 2, an end ring 3, a screen filter layer 4, a wire winding filter layer 5 and an outer protective layer 6, wherein threads are arranged at two ends of the base pipe 2, one end of the base pipe 2 is connected with the oil pipe coupling 1 through threads, the screen filter layer 4 is sleeved outside the base pipe 2, the wire winding filter layer 5 is sleeved outside the screen filter layer 4, the outer protective layer 6 is sleeved outside the wire winding filter layer 5, the end rings 3 are respectively arranged at two ends of the screen filter layer 4, the wire winding filter layer 5 and the outer protective layer 6, filter holes 7 are uniformly arranged on the screen filter layer 4 and the wire winding filter layer 5, sand-containing crude oil passes through the outer protective layer 6, the wire winding filter layer 5 and blocks sand outside the base pipe 2, the base pipe adopts API standard casing pipe or oil pipe, the outer protective layer 6, the wire winding filter layer 5 and the screen filter layer, by adopting a full-welding structure, the multilayer sand control can effectively limit the formation sand outside the casing, and the sand control effect is good.
As shown in figure 1, the length of the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 is consistent, the two ends are flush, and the two ends of the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 are conveniently welded and fixed with the end ring 3.
As shown in fig. 1, two ends of the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 are respectively welded and fixed with the end ring 3, so that the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 are of an integrated structure and form an independent filtering body, and when the screen filtering layer 4, the wire winding filtering layer 5, the outer protective layer 6 and the base pipe are assembled with the base pipe 2, the welding times of the screen filtering layer 4, the wire winding filtering layer 5, the outer protective layer 6 and the base pipe are reduced to the minimum, and the influence of.
As shown in figure 2, the outer protective layer 6 is evenly provided with lateral flow holes 8, so that the sand control construction failure caused by the puncture and hanging damage of the sand control filter layer during the well descending is avoided.
As shown in fig. 3, the lateral flow holes 8 on the outer protective layer 6 are bridge-type lateral flow holes 8 formed by surface stretching and partially recessing from the outer surface inwards, and have lateral flow seams 9 at both sides, so as to avoid sand control construction failure caused by puncture and hanging damage of the sand control filter layer during downhole, and well protect the sand control filter layer.
As shown in fig. 4, the base pipe 2 is uniformly provided with base pipe holes 10, and the base pipe holes 10 are spirally distributed on the base pipe 2. The permeability is high, the opening area of the cross section of the pipe body is reduced, the strength of the central pipe is retained to the maximum extent on the basis of ensuring the whole flow area of the pipe body, and various well conditions such as inclined wells, vertical wells, deep wells and the like are met.
As shown in fig. 1, the wire winding filter layer 5 is provided with two layers, the diameter of the filter hole 7 of the outer wire winding filter layer 5 is larger than that of the filter hole 7 of the inner side, multi-layer filtering sand prevention is carried out, and the sand prevention effect is enhanced.
The utility model discloses filter area is big, the permeability is high, prevent stifled strong ability, long service life, effectively protect the hydrocarbon reservoir, be equipped with the side flow hole on the outer protective layer, the sand control filter layer is punctured when avoiding going into the well, hang bad and the sand control construction failure who arouses, the injury that causes the stratum in the well completion in-process that significantly reduces, can guarantee that the intercommunication between hydrocarbon reservoir and the well is unblocked, the base tube hole has evenly been seted up on the base tube, the base tube hole is spiral distribution on the base tube, the permeability is high, effectively control the hydrocarbon reservoir sand production, prevent that the wall of a well from collapsing and ensure the long-term production of hydrocarbon well, the oil well.
Example 2:
as shown in figure 1, the utility model comprises an oil pipe coupling 1, a base pipe 2, an end ring 3, a screen filter layer 4, a wire winding filter layer 5 and an outer protective layer 6, wherein threads are arranged at two ends of the base pipe 2, one end of the base pipe 2 is connected with the oil pipe coupling 1 through threads, the screen filter layer 4 is sleeved outside the base pipe 2, the wire winding filter layer 5 is sleeved outside the screen filter layer 4, the outer protective layer 6 is sleeved outside the wire winding filter layer 5, the end rings 3 are respectively arranged at two ends of the screen filter layer 4, the wire winding filter layer 5 and the outer protective layer 6, filter holes 7 are uniformly arranged on the screen filter layer 4 and the wire winding filter layer 5, sand-containing crude oil passes through the outer protective layer 6, the wire winding filter layer 5 and blocks sand outside the base pipe 2, the base pipe adopts API standard casing pipe or oil pipe, the outer protective layer 6, the wire winding filter layer 5 and the screen filter layer, by adopting a full-welding structure, the multilayer sand control can effectively limit the formation sand outside the casing, and the sand control effect is good.
As shown in figure 1, the length of the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 is consistent, the two ends are flush, and the two ends of the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 are conveniently welded and fixed with the end ring 3.
As shown in fig. 1, two ends of the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 are respectively welded and fixed with the end ring 3, so that the screen filtering layer 4, the wire winding filtering layer 5 and the outer protective layer 6 are of an integrated structure and form an independent filtering body, and when the screen filtering layer 4, the wire winding filtering layer 5, the outer protective layer 6 and the base pipe are assembled with the base pipe 2, the welding times of the screen filtering layer 4, the wire winding filtering layer 5, the outer protective layer 6 and the base pipe are reduced to the minimum, and the influence of.
As shown in figure 2, the outer protective layer 6 is evenly provided with lateral flow holes 8, so that the sand control construction failure caused by the puncture and hanging damage of the sand control filter layer during the well descending is avoided.
As shown in fig. 3, the lateral flow holes 8 on the outer protective layer 6 are bridge-type lateral flow holes 8 formed by surface stretching and partially recessing from the outer surface inwards, and have lateral flow seams 9 at both sides, so as to avoid sand control construction failure caused by puncture and hanging damage of the sand control filter layer during downhole, and well protect the sand control filter layer.
As shown in fig. 4, the base pipe 2 is uniformly provided with base pipe holes 10, and the base pipe holes 10 are spirally distributed on the base pipe 2. The permeability is high, the opening area of the cross section of the pipe body is reduced, the strength of the base pipe 2 is retained to the maximum extent on the basis of ensuring the whole flow area of the pipe body, and various well conditions such as inclined wells, vertical wells, deep wells and the like are met.
As shown in fig. 1, the wire winding filter layer 5 is provided with two layers, the diameter of the filter hole 7 of the outer wire winding filter layer 5 is larger than that of the filter hole 7 of the inner side, multi-layer filtering sand prevention is carried out, and the sand prevention effect is enhanced.
The difference from the embodiment 1 is that:
like figure 5, the lateral flow hole 8 is spirally distributed on the outer protective layer 6, the permeability is high, the opening area of the cross section of the pipe body is reduced, on the basis of ensuring the whole overflowing area of the pipe body, the strength of the outer protective layer 6 is kept to the maximum extent, the strength of the pipe body is increased, the service life is prolonged, and the cost is saved.
The utility model discloses filter area is big, the permeability is high, prevent stifled strong ability, long service life, effectively protect the hydrocarbon reservoir, be equipped with the side flow hole on the outer protective layer, the sand control filter layer is punctured when avoiding going into the well, hang bad and the sand control construction failure who arouses, the injury that causes the stratum in the well completion in-process that significantly reduces, can guarantee that the intercommunication between hydrocarbon reservoir and the well is unblocked, the base tube hole has evenly been seted up on the base tube, the base tube hole is spiral distribution on the base tube, the permeability is high, effectively control the hydrocarbon reservoir sand production, prevent that the wall of a well from collapsing and ensure the long-term production of hydrocarbon well, the oil well. The lateral flow holes are spirally distributed on the outer protective layer, the permeability is high, the opening area of the cross section of the pipe body is reduced, the strength of the outer protective layer is kept to the maximum extent on the basis of ensuring the whole overflowing area of the pipe body, the strength of the pipe body is increased, the service life is prolonged, and the cost is saved.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (7)
1. The utility model provides a spiral sand screen of high accuracy multilayer protection, characterized by: including oil pipe coupling (1), parent tube (2), end links (3), screen cloth filter layer (4), wire winding filter layer (5), outer protective layer (6), both ends at parent tube (2) are equipped with the screw thread, there is oil pipe coupling (1) one end of parent tube (2) through threaded connection, outside cover at parent tube (2) is equipped with screen cloth filter layer (4), the outside cover of screen cloth filter layer (4) is equipped with wire winding filter layer (5), the outside cover of wire winding filter layer (5) is equipped with outer protective layer (6), at screen cloth filter layer (4), wire winding filter layer (5), the both ends of outer protective layer (6) are equipped with end links (3) respectively, at screen cloth filter layer (4), filter pores (7) have evenly been seted up on wire winding filter layer (5.
2. The high precision multi-layer protective spiral sand screen of claim 1, further comprising: the length of the screen filtering layer (4), the length of the wire winding filtering layer (5) and the length of the outer protective layer (6) are consistent, and the two ends are flush.
3. The high precision multi-layer protective spiral sand screen of claim 2, wherein: two ends of the screen filtering layer (4), the wire winding filtering layer (5) and the outer protective layer (6) are respectively welded and fixed with the end ring (3).
4. The high precision multi-layer protective spiral sand screen of claim 1, further comprising: the outer protection layer (6) is uniformly provided with lateral flow holes (8).
5. The high precision multi-layer protective spiral sand screen of claim 4, wherein: the side flow holes (8) on the outer protective layer (6) are bridge type side flow holes (8) which are formed by surface stretching and partially inwards concave from the outer surface, and the side flow holes (8) form double-side flow seams (9).
6. The high precision multi-layer protective spiral sand screen of claim 1, further comprising: the base pipe (2) is evenly provided with base pipe holes (10), and the base pipe holes (10) are spirally distributed on the base pipe (2).
7. The high precision multi-layer protective spiral sand screen of claim 1, further comprising: the wire winding filter layer (5) is provided with two layers, and the diameter of the filter hole (7) of the outer wire winding filter layer (5) is larger than that of the filter hole (7) of the inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468415.2U CN211573490U (en) | 2019-12-31 | 2019-12-31 | High-precision multi-layer protection spiral sand filtering pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468415.2U CN211573490U (en) | 2019-12-31 | 2019-12-31 | High-precision multi-layer protection spiral sand filtering pipe |
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| CN211573490U true CN211573490U (en) | 2020-09-25 |
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| CN201922468415.2U Active CN211573490U (en) | 2019-12-31 | 2019-12-31 | High-precision multi-layer protection spiral sand filtering pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324400A (en) * | 2020-12-04 | 2021-02-05 | 中国石油大学(北京) | Pre-filled sand control screen pipe nipple and processing method thereof |
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2019
- 2019-12-31 CN CN201922468415.2U patent/CN211573490U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324400A (en) * | 2020-12-04 | 2021-02-05 | 中国石油大学(北京) | Pre-filled sand control screen pipe nipple and processing method thereof |
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