CN209942799U - Flexible sand control screen pipe with section-by-section filling function - Google Patents
Flexible sand control screen pipe with section-by-section filling function Download PDFInfo
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- CN209942799U CN209942799U CN201920467813.XU CN201920467813U CN209942799U CN 209942799 U CN209942799 U CN 209942799U CN 201920467813 U CN201920467813 U CN 201920467813U CN 209942799 U CN209942799 U CN 209942799U
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Abstract
The utility model provides a flexible sand control screen pipe which is filled section by section, which comprises an upper joint, a connecting joint below the upper joint and a screen pipe component arranged on the connecting joint; the connecting joint is connected with the upper joint through a spherical short section, one end of the spherical short section extends into the upper joint, the other end of the spherical short section is provided with a spherical convex part used for installing the connecting joint, and the inner side of the connecting joint is provided with an assembling part matched with the spherical convex part; the screen pipe assembly comprises a screen pipe base pipe short joint arranged at the lower end of the connecting joint. The utility model discloses the cambered surface cooperation on cambered surface and the top connection that the cambered surface portion in the attach fitting outside also can be fine in the creation to ensure the wholeness of this kind of sand control screen pipe, smooth transition can be realized to top connection and attach fitting surface, the screen pipe of being convenient for stretches into the well body, avoids the screen pipe to block and takes place the damage, has improved the reliability and the trafficability characteristic of this kind of screen pipe, makes things convenient for this kind of sand control screen pipe business turn over well body, is favorable to improving the installation effectiveness of this kind of sand control screen pipe.
Description
Technical Field
The invention belongs to the technical field of petroleum sand control screen pipes, and particularly relates to a flexible sand control screen pipe filled section by section.
Background
The ultrashort radius oil well gas can fully utilize the track of the oil well, so that the oil and gas reservoir can be used to the maximum extent, and the technology has wide application in the excavation or development and adjustment of old oil fields. But for loose sandstone reservoirs, sand control must be carried out during well completion operation to ensure normal production of oil and gas wells. The ultrashort radius oil gas well can not be put into the well because of the large deflecting curvature of the conventional sand control screen pipe, so that the sand control operation can not be carried out. The invention relates to a section-by-section filling flexible sand control screen pipe, which is a novel sand control screen pipe capable of performing filling sand control construction operation and fully ensuring the filling sand control effect and meets the sand control requirement of an ultra-short radius oil-gas well.
Disclosure of Invention
In view of the above, the present invention provides a segment-by-segment packed flexible sand control screen to overcome the above-mentioned drawbacks of the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the flexible sand control screen pipe comprises an upper joint, a connecting joint below the upper joint and a screen pipe assembly arranged on the connecting joint; the connecting joint is connected with the upper joint through a spherical short section, one end of the spherical short section extends into the upper joint, the other end of the spherical short section is provided with a spherical convex part used for installing the connecting joint, and the inner side of the connecting joint is provided with an assembling part matched with the spherical convex part; the screen pipe subassembly includes the screen pipe base pipe nipple joint of attach fitting lower extreme installation and the attach nipple joint of installation in the screen pipe base pipe nipple joint, and this attach nipple top is equipped with and is equipped with the external screw thread with bulge complex depressed part, the one end that the screen pipe base pipe nipple joint was stretched out to the bottom, the one end that spherical nipple joint stretched into the top connection is equipped with the internal thread that matches with the external screw thread.
Furthermore, the inner side surface of the bottom of the upper joint is an arc surface, and the outer side of the connecting joint is provided with an arc surface part matched with the upper joint.
Furthermore, the inner side of the pipe nipple of the screen pipe base pipe is provided with a placing table for positioning the connecting nipple, and the connecting nipple is provided with a positioning block matched with the placing table.
Further, a sealing member is arranged on one side of the convex part, which faces the concave part.
Furthermore, a filtering component is arranged on the connecting joint corresponding to the position of the short joint of the base pipe of the sieve tube.
Furthermore, a liquid passing hole is formed in the position, corresponding to the filtering component, of the short joint of the base pipe of the sieve pipe.
Furthermore, the filtering component comprises a filtering pipe sleeved on a short joint of the base pipe of the sieve pipe, the filtering pipe adopts a wire-wound sieve pipe or a slotted sieve pipe, and a filter screen or a filter disc is arranged inside and outside the filtering pipe.
Furthermore, a wall clamping cavity convenient for liquid circulation is formed between the connecting short section and the screen pipe base pipe short section.
Furthermore, a through groove convenient for liquid to pass through is formed in the protruding portion along the axial direction of the spherical nipple, the lower end of the through groove is communicated with the wall clamping cavity, and the upper end of the through groove is communicated with a through hole vertically formed in the connecting joint.
Compared with the prior art, the invention has the following advantages:
compared with the prior sand control screen pipe, the sand control screen pipe can realize section-by-section installation and filling, thereby fully ensuring the gravel filling quality and greatly improving the sand control effect of an oil-gas well; by rotationally connecting the connecting joint with the spherical short section, the sieve tube can better adapt to the change of well trajectory, and the universality and the applicability of the sieve tube are greatly improved; the assembly part on the connecting joint can also form a ball socket matched with the convex part of the spherical nipple together with the concave part on the connecting nipple, so that the connecting joint realizes multi-angle rotation, the rotation performance of the connecting joint is greatly improved, the flexibility change performance of the sand control screen pipe is further improved, and meanwhile, the ball socket can also avoid the spherical nipple or the connecting joint from shaking, so that the separation of the connecting joint and the spherical nipple is avoided, and the reliability of the screen pipe in use is further improved.
The cambered surface part on the outer side of the connecting joint in the sand control screen pipe can be well matched with the cambered surface on the upper joint, so that the integrity of the sand control screen pipe is ensured, smooth transition can be realized on the outer surfaces of the upper joint and the connecting joint, the screen pipe can conveniently extend into a well body, the screen pipe is prevented from being clamped and damaged, the reliability and the passing performance of the screen pipe are improved, the sand control screen pipe can conveniently enter and exit from the well body, and the installation efficiency of the sand control screen pipe is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view in the direction of a-a in fig. 1.
Description of reference numerals:
1-upper joint; 2-a spherical nipple; 201-a boss; 3-connecting a joint; 301-an assembly part; 302-arc surface portion; 4-a seal; 5-a nipple joint of a base pipe of the sieve tube; 501-placing a table; 6-a filter pipe; 7-connecting short joints; 701-a recess; 8-external threads; 9-internal thread; 10-a through hole; 11-positioning blocks; 12-a double-walled cavity; 13-a filter disc; 14-liquid passing holes; 15-through groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A segment-by-segment packed flexible sand control screen, as shown in fig. 1 and 2, comprises an upper joint 1, a joint sub 3 below the upper joint 1, and a screen assembly mounted on the joint sub 3; the connecting joint 3 is connected with the upper joint 1 through a spherical short section 2, one end of the spherical short section 2 extends into the upper joint 1, the other end of the spherical short section is provided with a spherical bulge 201 for installing the connecting joint 3, and the inner side of the connecting joint 3 is provided with an assembling part 301 matched with the spherical bulge 201; the screen pipe subassembly includes 3 sieve pipe base pipe nipple joints 5 of lower extreme installation of attach fitting and the connection nipple joint 7 of installation in the sieve pipe base pipe nipple joint 5, and the 7 top of this connection nipple joint is equipped with and is equipped with bellying 201 complex depressed part 701, the one end that the sieve pipe base pipe nipple joint 5 was stretched out to the bottom is equipped with external screw thread 8, the one end that spherical nipple joint 2 stretched into top connection 1 is equipped with the internal thread 9 that matches with external screw thread 8.
The inner side surface of the bottom of the upper joint 1 is an arc surface, and the outer side of the connecting joint 3 is provided with an arc surface part 302 matched with the upper joint 1; by connecting the connecting joint 3 with the spherical short joint, the connecting joint 3 can rotate on the spherical short joint 2 properly, so that the flexible change of the sieve tube is realized, the sieve tube is better adapted to the change of well track, the sieve tube can enter various well bodies conveniently, and the universality and the applicability of the sieve tube are greatly improved;
when the inner side of the connecting joint 3 rotates along the spherical nipple 2, the connecting joint 3 can drive the nipple 5 of the base pipe of the sieve tube at the bottom and the connecting nipple 7 to synchronously rotate, the assembling part 301 on the connecting joint 3 and the concave part 701 on the connecting nipple 7 jointly form a ball socket matched with the convex part 201 of the spherical nipple 2, so that the connecting joint realizes multi-angle rotation, the rotating performance of the connecting joint is greatly improved, the flexible change performance of the sand control sieve tube is further improved, meanwhile, the ball socket can limit the spherical nipple, the spherical nipple and the connecting joint are prevented from shaking or loosening, the connecting joint is prevented from being separated from the spherical nipple, and the reliability of the sieve tube in use is further improved;
the cambered surface portion 302 in the 3 outside of attach fitting also can be fine with the cambered surface cooperation on the top connection 1 to ensure the wholeness of this kind of sand control screen pipe, smooth transition can be realized to top connection 1 and 3 surfaces of attach fitting, the screen pipe of being convenient for stretches into the well body, avoids the screen pipe to block and takes place the damage, has improved the reliability and the trafficability characteristic of this kind of screen pipe, makes things convenient for this kind of sand control screen pipe business turn over well body.
The sieve tube base tube nipple 5 inboard is equipped with the platform 501 of placing that is used for positioning connection nipple 7, be equipped with on the connection nipple 7 with place platform 501 complex locating piece 11, the restriction that locating piece 11 can be fine lives connection nipple 7, avoid connection nipple 7 to drop downwards from sieve tube base tube nipple 5, the top of connection nipple 7 can also be withstood by the bottom surface of spherical nipple 2 this moment, so connection nipple 7 can be placed platform 501 and spherical nipple 2 and press from both sides tightly fixedly jointly, the stability of connection nipple at the during operation has been improved greatly.
A liquid passing hole 14 is formed in the position, corresponding to the filter assembly, of the screen pipe base pipe short joint 5; when the sand control screen pipe works, mortar can be desanded outside the filtering component, the filtering component can play a good role in filtering, and petroleum can directly enter a pipe nipple of the screen pipe through the liquid hole 14 after being filtered.
A filter assembly is arranged on the connecting joint 3 corresponding to the position of the short section 5 of the base pipe of the sieve tube; the filter assembly comprises a filter pipe 6 sleeved on a short section 5 of a base pipe of the sieve pipe, the filter pipe 6 adopts a wire-wound sieve pipe or a slotted sieve pipe, a filter screen or a filter disc 13 is arranged inside and outside the filter pipe 6, the filter screen or the filter disc 13 is arranged inside and outside the filter pipe 6, and a specific installation mode is adopted, so that a person skilled in the art can install one or more filter discs 13 inside and outside the filter pipe according to actual needs, and metal cotton sheets can be arranged inside and outside the filter pipe to enhance the filtering effect of the filter pipe;
a wall clamping cavity 12 facilitating liquid circulation is formed between the connecting short section 7 and the screen pipe base pipe short section 5; a through groove 15 convenient for liquid to pass through is arranged on the convex part 201 along the axial direction of the spherical nipple 2, the lower end of the through groove 15 is communicated with the wall clamping cavity 12, and the upper end of the through groove 15 is communicated with a through hole 10 vertically arranged on the connecting joint 3; when the flexible sand control screen pipe is filled section by section, multi-stage connection is generally needed for use, namely, external connecting threads at the lower part of a connecting short section 7 of the screen pipe are connected with internal connecting threads of an upper joint 1, after the internal and external threads 8 are connected, the outer side of the lower end of a base pipe short section 5 of the screen pipe is matched with the inner side of the upper end of the upper joint 1, a wall clamping cavity 12 is formed between the connecting short section 7 and the short section/upper joint of the base pipe of the screen pipe, and the wall clamping cavity 12 is communicated with a through groove 15 on a convex part of a spherical short section through a through hole 10 on the inner side of the;
when sand control is filled in the well body, mortar is desanded outside the filter pipe 6, under the interception of the filter assembly, filling sand (gravel) in the mortar can be left outside the filter pipe 6, sand-carrying liquid can penetrate through the filter pipe and enter the liquid flow channel described above through the liquid passing hole in the nipple of the base pipe of the sieve pipe, and along with the continuous injection of the mortar, the filling sand can fill the well body, so that the filling construction process of the well body is completed.
One side of going to depressed part 701 on the bellying 201 is equipped with sealing member 4, this sealing member 4 can adopt current sealing rubber circle, also can adopt other sealing members 4 that can play sealed effect, as long as can realize spherical nipple joint 2 with connect the sliding seal of nipple joint 7 department can, seal through using sealing member 4, can avoid taking the sand fluid to get into and link the nipple joint inside, make that it is better to take the sand fluid flow in the circulation passageway of compriseing double-layered wall chamber, thereby avoid taking the sand fluid to leak, the speed of filling the construction has been accelerated greatly.
Compared with the prior sand control screen pipe, the sand control screen pipe can realize section-by-section installation and filling, thereby fully ensuring the gravel filling quality and greatly improving the sand control effect of an oil-gas well; by rotationally connecting the connecting joint with the spherical short section, the sieve tube can better adapt to the change of well trajectory, and the universality and the applicability of the sieve tube are greatly improved; the assembly part on the connecting joint can also form a ball socket matched with the convex part of the spherical nipple together with the concave part on the connecting nipple, so that the connecting joint realizes multi-angle rotation, the rotation performance of the connecting joint is greatly improved, the flexibility change performance of the sand control screen pipe is further improved, and meanwhile, the ball socket can also avoid the spherical nipple or the connecting joint from shaking, so that the separation of the connecting joint and the spherical nipple is avoided, and the reliability of the screen pipe in use is further improved.
The cambered surface part on the outer side of the connecting joint in the sand control screen pipe can be well matched with the cambered surface on the upper joint, so that the integrity of the sand control screen pipe is ensured, smooth transition can be realized on the outer surfaces of the upper joint and the connecting joint, the screen pipe can conveniently extend into a well body, the screen pipe is prevented from being clamped and damaged, the reliability and the passing performance of the screen pipe are improved, the sand control screen pipe can conveniently enter and exit from the well body, and the installation efficiency of the sand control screen pipe is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (9)
1. The flexible sand control screen pipe is filled section by section, which is characterized in that: comprises an upper joint, a connecting joint below the upper joint and a sieve tube component arranged on the connecting joint; the connecting joint is connected with the upper joint through a spherical short section, one end of the spherical short section extends into the upper joint, the other end of the spherical short section is provided with a spherical convex part used for installing the connecting joint, and the inner side of the connecting joint is provided with an assembling part matched with the spherical convex part; the screen pipe subassembly includes the screen pipe base pipe nipple joint of attach fitting lower extreme installation and the attach nipple joint of installation in the screen pipe base pipe nipple joint, and this attach nipple top is equipped with and is equipped with the external screw thread with bulge complex depressed part, the one end that the screen pipe base pipe nipple joint was stretched out to the bottom, the one end that spherical nipple joint stretched into the top connection is equipped with the internal thread that matches with the external screw thread.
2. The segment-by-segment packed flexible sand control screen of claim 1, wherein: the medial surface of top connection bottom is the cambered surface, and the outside of attach fitting is equipped with the cambered surface portion that matches with the top connection.
3. The segment-by-segment packed flexible sand control screen of claim 1, wherein: the sieve tube base tube nipple joint is characterized in that a placing table used for positioning the connecting nipple joint is arranged on the inner side of the nipple joint of the sieve tube base tube, and a positioning block matched with the placing table is arranged on the connecting nipple joint.
4. The segment-by-segment packed flexible sand control screen of claim 1, wherein: a sealing member is arranged on one side of the convex part facing the concave part.
5. The segment-by-segment packed flexible sand control screen of claim 1, wherein: and a filtering component is arranged on the connecting joint corresponding to the short section of the base pipe of the sieve tube.
6. The segment-by-segment packed flexible sand control screen of claim 5, wherein: and a liquid passing hole is formed in the position, corresponding to the filtering component, of the short joint of the base pipe of the sieve pipe.
7. The segment-by-segment packed flexible sand control screen of claim 5, wherein: the filter assembly comprises a filter pipe sleeved on a short joint of a base pipe of the sieve pipe, the filter pipe adopts a wire-wound sieve pipe or a slotted sieve pipe, and a filter screen or a filter disc is arranged inside and outside the filter pipe.
8. The segment-by-segment packed flexible sand control screen of claim 1, wherein: and a wall clamping cavity convenient for liquid circulation is formed between the connecting short section and the screen pipe base pipe short section.
9. The segment-by-segment packed flexible sand control screen of claim 8, wherein: the upper edge of the convex part is provided with a through groove convenient for liquid to pass through along the axial direction of the spherical short section, and the lower end of the through groove is communicated with the wall clamping cavity and the upper end of the through groove is communicated with a through hole vertically arranged on the connecting joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467813.XU CN209942799U (en) | 2019-04-08 | 2019-04-08 | Flexible sand control screen pipe with section-by-section filling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467813.XU CN209942799U (en) | 2019-04-08 | 2019-04-08 | Flexible sand control screen pipe with section-by-section filling function |
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| CN209942799U true CN209942799U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920467813.XU Active CN209942799U (en) | 2019-04-08 | 2019-04-08 | Flexible sand control screen pipe with section-by-section filling function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915086A (en) * | 2019-04-08 | 2019-06-21 | 海油来博(天津)科技股份有限公司 | A kind of segmented flexibility sand control screen |
| CN113818844A (en) * | 2021-05-31 | 2021-12-21 | 中国海洋石油集团有限公司 | Well completion pipe string structure for ultra-short radius well |
-
2019
- 2019-04-08 CN CN201920467813.XU patent/CN209942799U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915086A (en) * | 2019-04-08 | 2019-06-21 | 海油来博(天津)科技股份有限公司 | A kind of segmented flexibility sand control screen |
| CN109915086B (en) * | 2019-04-08 | 2023-09-26 | 海油来博(天津)科技股份有限公司 | Sectional type flexible sand control screen pipe |
| CN113818844A (en) * | 2021-05-31 | 2021-12-21 | 中国海洋石油集团有限公司 | Well completion pipe string structure for ultra-short radius well |
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