CN210888829U - Anti-blocking tubing hanger nipple - Google Patents
Anti-blocking tubing hanger nipple Download PDFInfo
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- CN210888829U CN210888829U CN201921913666.0U CN201921913666U CN210888829U CN 210888829 U CN210888829 U CN 210888829U CN 201921913666 U CN201921913666 U CN 201921913666U CN 210888829 U CN210888829 U CN 210888829U
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- oil pipe
- main body
- buckle
- tubing
- length
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Abstract
The utility model discloses an anti-sticking oil pipe hanger nipple joint, include: the oil feeding pipe buckle, the main body and the oil discharging pipe buckle are integrally formed, a square opening is formed in each of the left side and the right side of the main body, the main body is of a cylindrical structure, two ends of the main body are communicated, the sections of the oil feeding pipe buckle and the oil discharging pipe buckle are isosceles trapezoids, and the side length of one end far away from the main body is smaller than that of one end close to the main body; can solve fracturing string sand bridge card, the tubular column lifting capacity is not enough, the technological problem that the well head can not normally be dismantled, the utility model discloses the biggest advantage of product is: the maximum lifting amplitude is shortened, and the square opening is fixed through an inserting plate; the method is suitable for shallow wells, and is more suitable for wells with small lifting amount; the structure is simple, the operation is convenient, and the operability is strong; convenient processing, low cost, economy and applicability.
Description
Technical Field
The utility model relates to the field of machinary, especially, relate to anti-sticking oil pipe hanger nipple joint.
Background
At present, oil pipe hanger short sections commonly used for oil-water wells all adopt conventional oil pipes with the outer diameter of 73mm and the length of 300-500 mm. During the construction of fracturing operation, once a sand bridge is formed at the packer, most wells are not moved when being clamped and pulled, and particularly, the shallow well operation in a residual oil field is particularly prominent, so that major repair operation is often caused, and the operation cost is increased.
Disclosure of Invention
The utility model discloses the main technical problem who solves provides anti-sticking oil pipe hanger nipple joint, problem in can the background art.
In order to solve the technical problem, the utility model discloses a technical scheme be: provide anti-sticking oil hanger nipple joint, its characterized in that includes: go up oil pipe and detain 1, main part 2, lower oil pipe and detain 3, anti-sticking oil pipe hanger nipple joint upper portion is for going up oil pipe and detains 1, and the middle part is the nozzle stub, and the lower part is lower oil pipe and detains 3, respectively open 2 left and right sides of main part has a square mouth 4, the appearance of main part 2 is the cylinder structure, and both ends link up, it detains 1 and lower oil pipe and detains 3 cross-section for isosceles trapezoid to go up oil pipe, and keeps away from the length of side of the one end of main part is less than and is close to the length of.
Preferably, the upper tubing fastener 1 is connected with the tubing sealing head, and the lower tubing fastener 3 is connected with the fracturing tubing string.
Preferably, the main body 2, the upper oil pipe buckle 1 and the lower oil pipe buckle 3 are integrally formed.
Preferably, the length of the body 2 is 180 mm.
Preferably, the length of the upper oil pipe buckle 1 and the lower oil pipe buckle 3 close to one end of the main body is 90mm, and the length of the end far away from the main body 2 is 73 mm.
Preferably, the square opening 4 is located at a position 50mm close to the upper oil pipe buckle 1, has a longitudinal length of 30mm, and is distributed in a bilateral symmetry mode.
The utility model has the advantages that:
(1) the problem that when the pipe column is clamped by sand, the lifting height of the oil pipe head of the fracturing wellhead is insufficient and the fracturing pipe column cannot be disassembled is solved;
(2) the packer is prevented from being damaged by pulling out the strong lifting pipe, the pipe column is prevented from being blocked to the maximum extent, and the string-moving releasing construction cannot be realized;
(3) the lifting amount is greatly shortened, and the square opening is fixed through an inserting plate;
(4) the method is suitable for shallow wells, and is more suitable for wells with small lifting amount;
(5) the structure is simple, the operation is convenient, and the operability is strong;
(6) the processing is convenient, the cost is low, and the method is economical and applicable;
(7) the tool has very obvious use effect in the remaining oil field, obtains favorable results, and has the sand bridge stuck pipe column stuck releasing success rate close to 100 percent. Recently, 500 well fracturing operations are applied in the remaining oil field, and 60 wells are stuck, wherein: 5 wells of the stuck well are buried in sand, the stuck releasing is not completed, and the other 55 wells are stuck in a sand bridge, so that the stuck releasing success rate is 100 percent. Compared with the prior art, the method improves the unfreezing success rate by 65 percent.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
the parts in the drawings are numbered as follows: 1. applying an oil pipe buckle; 2. a main body; 3. feeding an oil pipe buckle; 4. and (4) square opening.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1, an embodiment of the present invention includes:
anti-sticking oil pipe hanger nipple joint, its characterized in that includes: the oil feeding pipe buckle comprises an upper oil pipe buckle 1, a main body 2 and a lower oil pipe buckle 3, wherein the upper part of the short section is the upper oil pipe buckle 1, the middle part of the short section is a short pipe, the lower part of the short section is the lower oil pipe buckle 3, the left side and the right side of the main body 2 are respectively provided with a square opening 4, the main body 2 is of a cylindrical structure, the two ends of the main body are communicated, the sections of the upper oil pipe buckle 1 and the lower oil pipe buckle 3 are isosceles trapezoids, and the side length of one end far away from the main; the upper oil pipe buckle 1 is connected with an oil pipe sealing head, and the lower oil pipe buckle 3 is connected with a fracturing oil pipe column; the main body 2, the upper oil pipe buckle 1 and the lower oil pipe buckle 3 are integrally formed; the length of the main body 2 is 180 mm; the length of the upper oil pipe buckle 1 and the lower oil pipe buckle 3 close to one end of the main body is 90mm, and the length of the end far away from the main body 2 is 73 mm; the square opening 4 is located at a position 50mm close to the upper oil pipe buckle 1, is 30mm in length along the longitudinal direction, and is distributed in a bilateral symmetry mode.
The utility model discloses a use method: during the construction of the fracturing operation, the tubing hanger short section in the original well is removed and replaced by an anti-blocking tubing hanger short section. When the fracturing string forms a sand bridge, the fracturing string is clamped, the string is lifted to expose the square opening on the anti-blocking tubing hanger nipple, then a specially-made inserting plate is inserted into the square opening and is seated on a well mouth, then the tubing sealing head is detached, and a tubing coupling and a single tubing are connected. And repeatedly shifting the clamped oil pipe column, and loosening the sand bridge to finish the releasing construction.
The upper structure of a general conventional fracturing string is 200mm in an oil pipe sealing head, about 300mm in average in an oil pipe short section, about 200mm in length of an oil pipe coupling, about 250mm in height of an oil pipe elevator and about 950mm in total lifting height. The natural extension of an oil pipe with the length of 500 meters is not more than 100mm, when the lifting load is increased by 20 tons, the extension of the oil pipe is about 300mm, so that the total extension of the oil pipe is not enough to be driven by an elevator in conventional operation, and a wellhead cannot be disassembled for construction. After the anti-blocking oil pipe hanger short section is adopted, the square opening of the oil pipe hanger short section is exposed completely, and only the lifting height is 280mm, so that the requirement of lifting and disassembling a wellhead is met.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (6)
1. Anti-sticking oil pipe hanger nipple joint, its characterized in that includes: go up oil pipe and detain (1), main part (2), oil pipe knot (3) down, anti-sticking oil pipe hanger nipple joint upper portion is for going up oil pipe knot (1), and the middle part is the nozzle stub, and the lower part is oil pipe knot (3) down, main part (2) the left and right sides respectively opens there is a square mouth (4), the appearance of main part (2) is the cylinder structure, and both ends link up, the cross-section that goes up oil pipe knot (1) and oil pipe knot (3) down is isosceles trapezoid, and keeps away from the length of side of the one end of main part is less than and is close to the one end length of side of main.
2. The anti-seize tubing hanger sub of claim 1, wherein: the upper oil pipe buckle (1) is connected with the oil pipe sealing head, and the lower oil pipe buckle (3) is connected with the fracturing oil pipe column.
3. The anti-seize tubing hanger sub according to claim 1, characterized in that the main body (2), the upper tubing buckle (1) and the lower tubing buckle (3) are integrally formed.
4. The anti-seize tubing hanger sub according to claim 1, characterized in that the length of the body (2) is 180 mm.
5. The anti-seize tubing hanger nipple according to claim 1, characterized in that the length of the upper tubing buckle (1) and the lower tubing buckle (3) near the main body is 90mm, and the length of the end far from the main body (2) is 73 mm.
6. The anti-seize tubing hanger nipple according to claim 1, characterized in that the square mouth (4) is located 50mm close to the upper oil pipe buckle (1), has a longitudinal length of 30mm, and is distributed in bilateral symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921913666.0U CN210888829U (en) | 2019-11-07 | 2019-11-07 | Anti-blocking tubing hanger nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921913666.0U CN210888829U (en) | 2019-11-07 | 2019-11-07 | Anti-blocking tubing hanger nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210888829U true CN210888829U (en) | 2020-06-30 |
Family
ID=71313051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921913666.0U Active CN210888829U (en) | 2019-11-07 | 2019-11-07 | Anti-blocking tubing hanger nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210888829U (en) |
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2019
- 2019-11-07 CN CN201921913666.0U patent/CN210888829U/en active Active
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