CN215726551U - Bridge plug pressure testing device - Google Patents
Bridge plug pressure testing device Download PDFInfo
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- CN215726551U CN215726551U CN202120553256.0U CN202120553256U CN215726551U CN 215726551 U CN215726551 U CN 215726551U CN 202120553256 U CN202120553256 U CN 202120553256U CN 215726551 U CN215726551 U CN 215726551U
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- included angle
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Abstract
The application discloses bridging plug pressure testing device belongs to oil gas well exploitation technical field. The embodiment of the application provides a bridge plug pressure testing device, the one end and the pressure testing bushing of connector, the other end is concave-convex structure, the depressed part in this concave-convex structure can be imbedded to the one end of core bar, and the first contained angle between the sealed face of this junction depressed part and the horizontal plane is greater than the second contained angle between the sealed face of the one end of core bar and the horizontal plane, consequently, there is the clearance between the sealed face of depressed part and the sealed face of the one end of core bar, can reserve certain space for core bar and connector deformation at sealed in-process through this clearance, guarantee the leakproofness between connector and the core bar, permanent use also can not cause the connector damage, do not need often to change the connector like this, thereby the cost to bridge plug sealing performance detection has been reduced.
Description
Technical Field
The application relates to the technical field of oil and gas well exploitation. In particular to a bridge plug pressure testing device.
Background
The bridge plug is a well tool commonly used for staged fracturing of oil and gas wells, and is generally seated at a preset position in a casing pipe to realize sealed separation of well shafts of the oil and gas wells during field operation. Before the bridge plug is placed in the sleeve, the sealing performance of the bridge plug needs to be detected through a bridge plug pressure testing device.
In the related art, the bridge plug pressure testing device mainly comprises: the pressure test pipeline, the connector and the pressure test sleeve are characterized in that the bridge plug is firstly placed in the pressure test sleeve during pressure test, the pressure test pipeline is connected with the pressure test sleeve through the connector, then pressure is applied to the pressure test sleeve, and the pressure is kept for a period of time under the pressure. If the pressure variation amplitude is small, the sealing performance of the bridge plug is good, and if the pressure variation amplitude is large, the sealing performance of the bridge plug is poor.
But the connection of connector and pressure testing pipeline and pressure testing sleeve pipe among the correlation technique is threaded sealing connection, and at the pressure testing in-process, threaded connection department needs to undertake great pressure, uses for a long time and causes the damage of connector screw thread easily, and then causes the sealed inefficacy of connector, just needs often to change the connector under this kind of condition to lead to the cost that detects bridge plug sealing performance higher.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a bridge plug pressure testing device, which can reduce the cost of detecting the sealing performance of a bridge plug. The specific technical scheme is as follows:
the embodiment of the application provides a bridge plug pressure testing device, the device includes: the pressure testing device comprises a pressure testing pipeline, a connector, a pressure testing sleeve, a core rod and a pressure cap;
the first end of the connector is connected with the pressure test sleeve, and the pressure test sleeve is used for setting and releasing the bridge plug;
the second end of the connector is of a concave-convex structure, the first end of the core rod is embedded into a concave part in the concave-convex structure and is in sealing connection with the concave part, a first sealing surface of the concave part forms a first included angle with the horizontal plane, a second sealing surface of the first end of the core rod forms a second included angle with the horizontal plane, and the first included angle is larger than the second included angle;
the pressing cap is sleeved outside the core rod and is connected with a protruding part in the concave-convex structure;
the second end of the core rod is connected with the pressure test pipeline.
In one possible implementation manner, the first end of the core bar is provided with a limiting step;
the limiting step is used for limiting the stroke of the pressing cap in the axial direction.
In another possible implementation manner, the axis of the core rod is aligned with the axis of the connector.
In another possible implementation manner, at least one groove is formed in the first end of the connector, and a sealing ring is arranged in each groove;
the first end of connector with the pressure testing sleeve pipe passes through the recess with sealing washer sealing connection.
In another possible implementation, the first included angle is not greater than 60 ° and not less than 45 °;
the second included angle is not more than 45 degrees and not less than 30 degrees.
In another possible implementation, the first included angle is 45 ° and the second included angle is 30 °.
In another possible implementation, the pressing cap is connected with the protruding part through threads;
and the second end of the core rod is welded with the pressure test pipeline.
In another possible implementation, the shape of the protruding portion and the shape of the pressing cap are both hexagonal.
In another possible implementation, the cross-sectional shape of the thread is trapezoidal.
In another possible implementation manner, the core rod is of a hollow structure.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
the embodiment of the application provides a bridge plug device, the one end and the pressure testing bushing connection of connector, the other end is concave-convex structure, the depressed part in this concave-convex structure can be imbedded to the one end of core bar, and the first contained angle between the sealed face of this junction depressed part and the horizontal plane is greater than the second contained angle between the sealed face of the one end of core bar and the horizontal plane, consequently, there is the clearance between the sealed face of depressed part and the sealed face of the one end of core bar, can reserve certain space for core bar and connector deformation at sealed in-process through this clearance, guarantee the leakproofness between connector and the core bar, permanent use also can not cause the connector damage, do not need often to change the connector like this, thereby the cost to bridge plug sealing performance detection has been reduced.
Drawings
FIG. 1 is a schematic view of a bridge plug pressure testing device provided by an embodiment of the application;
FIG. 2 is a schematic view of another bridge plug pressure testing device provided by the embodiment of the application.
The reference numerals denote:
1-pressure test pipeline, 2-connector, 3-pressure test sleeve, 4-core rod, 5-pressure cap and 41-limiting level.
Detailed Description
In order to make the technical solutions and advantages of the present application more clear, the following describes the embodiments of the present application in further detail.
The embodiment of the application provides a bridge plug pressure testing device, refer to fig. 1, and the device includes: the pressure testing device comprises a pressure testing pipeline 1, a connector 2, a pressure testing sleeve 3, a core bar 4 and a pressure cap 5;
the first end of the connector 2 is connected with a pressure test sleeve 3, and the pressure test sleeve 3 is used for setting and releasing a bridge plug;
the second end of the connector 2 is of a concave-convex structure, the first end of the core rod 4 is embedded into a concave part in the concave-convex structure and is in sealing connection with the concave part, a first sealing surface of the concave part forms a first included angle with the horizontal plane, a second sealing surface of the first end of the core rod 4 forms a second included angle with the horizontal plane, and the first included angle is larger than the second included angle;
the pressing cap 5 is sleeved outside the core rod 4 and is connected with a protruding part in the concave-convex structure;
the second end of the core rod 4 is connected with the pressure test pipeline 1.
The embodiment of the application provides a bridge plug pressure testing device, the one end and the pressure testing sleeve pipe 3 of connector 2 are connected, the other end is concave-convex structure, the depressed part in this concave-convex structure can be embedded into to the one end of core bar 4, and first contained angle between the sealed face of this junction depressed part and the horizontal plane is greater than the second contained angle between the sealed face of the one end of core bar 4 and the horizontal plane, therefore, there is the clearance between the sealed face of depressed part and the sealed face of the one end of core bar 4, can reserve certain space for the deformation of core bar 4 and connector 2 in sealed process through this clearance, guarantee the leakproofness between connector 2 and the core bar 4, permanent use also can not cause the damage of connector 2, do not need often to change connector 2 like this, thereby the cost of detecting the sealing performance of bridge plug has been reduced.
Introduction of the connector 2: in a possible implementation manner, the second end of the connector 2 is a concave-convex structure, a first included angle is formed between a first sealing surface of a concave portion in the concave-convex structure and the horizontal plane, a second included angle is formed between a second sealing surface of the first end of the core rod 4 and the horizontal plane, and the first included angle is larger than the second included angle.
In one possible implementation, the first included angle is no greater than 60 °, and no less than 45 °, i.e., 45 ° ≦ α ≦ 60 °, where α represents the first included angle. The second included angle is not more than 45 degrees and not less than 30 degrees, namely beta is more than or equal to 30 degrees and less than or equal to 45 degrees, wherein beta represents the second included angle.
The first included angle may be any value between 45 ° and 60 °, which is not particularly limited in the embodiments of the present application. For example, the first included angle is 45 °, 50 °, or 60 °. The second included angle may be any value between 30 ° and 45 °, which is not particularly limited in the embodiment of the present application. For example, the second angle is 30 °, 35 °, or 45 °.
It should be noted that, because the first included angle is greater than the second included angle, the first included angle and the second included angle are not equal to 45 ° at the same time, that is, when the first included angle is equal to 45 °, the second included angle is any value smaller than 45 ° between 30 ° and 45 °, and when the second included angle is equal to 45 °, the first included angle is any value larger than 45 ° between 45 ° and 60 °. In the embodiments of the present application, only the first included angle is 45 ° and the second included angle is 30 °.
In a possible implementation manner, at least one groove is arranged inside the first end of the connector 2, and a sealing ring is arranged in each groove; the first end of the connector 2 is hermetically connected with the pressure test sleeve 3 through a groove and a sealing ring.
In this implementation manner, the number of the grooves may be set and changed as needed, and in the embodiment of the present application, the number of the grooves is not specifically limited. For example, the number of grooves is 1, 2 or 3.
Moreover, a sealing ring is arranged in each groove, the type of the sealing ring can be set according to the requirement, and the sealing ring is not particularly limited in the embodiment of the application. For example, the seal ring is an O-ring seal. In addition, the number of the sealing rings in each groove can be set and changed according to needs, and is not particularly limited in the embodiment of the present application. For example, the number of the seal rings is 1 or 2.
In a possible implementation manner, the structure of the protruding portion of the second end of the connection head 2 may be set and modified as needed, and in the embodiment of the present application, this is not particularly limited. For example, the structure of the projection is hexagonal.
In this implementation, when the connector 2 is connected with the pressure test sleeve 3, the connector 2 and the pressure test sleeve 3 can be screwed by an adjustable wrench, so that the sealing property of the joint of the connector 2 and the pressure test sleeve 3 is ensured.
In a possible implementation manner, the length of the protruding portion may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited.
Introduction of core rod 4: in a possible realization, see fig. 2, the first end of the core rod 4 is provided with a limiting step 41;
the limiting step 41 is used for limiting the stroke of the pressing cap 5 in the axial direction.
In this implementation, the height of the limiting step 41 may be set and changed as needed, and this is not particularly limited in the embodiment of the present application. For example, the height of the restriction step 41 is 1 cm or 2 cm.
In a possible implementation manner, the core rod 4 is a hollow structure, that is, the center of the core rod 4 is a through hole, so that in the process of pressure testing, pressure can pass through the core rod 4 and enter the pressure testing sleeve 3, thereby performing pressure testing on the bridge plug in the pressure testing sleeve 3.
In a possible implementation mode, the axis of the core rod 4 is aligned with the axis of the connector 2, so that the core rod 4 can be aligned with the connector 2, and the bridge plug in the pressure test sleeve 3 is uniformly stressed in the pressure test process, thereby facilitating the pressure test process.
In a possible implementation manner, the material of the core rod 4 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the core rod 4 is made of cast iron or an alloy.
In a possible implementation manner, the length of the core rod 4 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited.
In a possible implementation manner, the diameter of the core rod 4 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the diameter of the core rod 4 is larger than the diameter of the pressure test line 1.
In one possible embodiment, the second end of the core rod 4 is fixedly connected to the pressure test line 1. The fixing connection manner may be set and changed as needed, and is not particularly limited in the embodiment of the present application. For example, the fixed connection is welding.
It should be noted that the pressing cap 5 is sleeved outside the core rod 4, and the pressing cap 5 can be sleeved outside the core rod 4 before the second end of the core rod 4 and the pressure test pipeline 1 are welded together, so that only the pressing cap 5 needs to be screwed during pressure test.
Introduction of the press cap 5: in a possible implementation manner, the pressing cap 5 is a hollow structure, that is, the center of the pressing cap 5 is a through hole, so that the pressing cap 5 can be sleeved outside the core rod 4. And, press cap 5 and bulge to pass through threaded connection, when carrying out the pressure testing like this, can screw through adjustable spanner and press cap 5, in the process of screwing, will press cap 5 and bulge to be connected to realize the sealed between core bar 4 and connector 2. In addition, since the core bar 4 is provided with the limiting step 41, the stroke of the pressing cap 5 in the axial direction can be limited in the process of screwing the pressing cap 5 through the limiting step 41.
In a possible implementation manner, the material of the pressing cap 5 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. For example, the material of the pressing cap 5 is cast iron or an alloy.
Introduction of the thread: in this application embodiment, press cap 5 and bulge to pass through threaded connection, the first end of connector 2 and pressure testing sleeve pipe 3 pass through threaded connection. The cross section of the thread at the threaded connection part is trapezoidal, and the trapezoid can be an isosceles trapezoid.
It should be noted that, in the related art, two components are mainly connected by screw thread sealing, and the screw thread connection not only plays a role in fastening, but also needs to bear a large pressure. The cross section of the thread is triangular, the contact surface is small, the bearing force is small, therefore, frequent disassembly easily causes thread damage, the sealing failure of the connector 2 is caused, the connector 2 needs to be frequently replaced under the condition, and the cost for detecting the sealing performance of the bridge plug is high.
In the embodiment of the application, during the pressure test, the connection part of the core rod 4 and the connector 2 bears larger pressure, and the threaded connection part only plays a role in connection and fastening, so that the damage to the threads is smaller. In addition, the cross section of the thread is trapezoidal, and compared with a triangular thread, the trapezoidal thread has a larger contact surface, is more wear-resistant in the using process and can bear larger force. Therefore, frequent disassembly is less damaging to the acme threads than to the triangular threads.
Moreover, this bridging plug pressure testing device's simple structure, convenient operation frequently dismantles and can not lead to the fact the influence to the sealing performance of connector 2, does not need often to change connector 2 like this to can reduce the cost of pressure testing in-process, material saving expense.
Introduction of the pressure test sleeve 3: in a possible implementation manner, the material of the pressure testing sleeve 3 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited. The pressure test casing 3 is, for example, a steel pipe. The model of the steel pipe can be set and changed according to the needs, for example, the steel pipe is J55 or P110.
In a possible implementation manner, the length of the pressure test sleeve 3 may be set and changed as needed, and in the embodiment of the present application, this is not particularly limited.
To sum up, the bridge plug pressure testing device that this application embodiment provided, the one end and the pressure testing sleeve pipe 3 of connector 2 are connected, the other end is concave-convex structure, the depressed part in this concave-convex structure can be embedded into to the one end of core bar 4, and first contained angle between the sealed face of this junction depressed part and the horizontal plane is greater than the sealed face of the one end of core bar 4 and the second contained angle between the horizontal plane, consequently, there is the clearance between the sealed face of the one end of depressed part and core bar 4, can reserve certain space for core bar 4 and connector 2 deformation in sealed process through this clearance, guarantee the leakproofness between connector 2 and the core bar 4, permanent use also can not cause the damage of connector 2, do not need often to change connector 2 like this, thereby the cost of detecting the bridge plug sealing performance has been reduced.
The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A bridge plug pressure testing device, the device comprising: the pressure testing device comprises a pressure testing pipeline (1), a connector (2), a pressure testing sleeve (3), a core rod (4) and a pressure cap (5);
the first end of the connector (2) is connected with the pressure test sleeve (3), and the pressure test sleeve (3) is used for setting a bridge plug;
the second end of the connector (2) is of a concave-convex structure, the first end of the core rod (4) is embedded into a concave part in the concave-convex structure and is in sealing connection with the concave part, a first sealing surface of the concave part and the horizontal plane form a first included angle, a second sealing surface of the first end of the core rod (4) and the horizontal plane form a second included angle, and the first included angle is larger than the second included angle;
the pressing cap (5) is sleeved outside the core rod (4) and is connected with a protruding part in the concave-convex structure;
the second end of the core rod (4) is connected with the pressure test pipeline (1).
2. Device according to claim 1, characterized in that the first end of the core rod (4) is provided with a limit step (41);
the limiting step (41) is used for limiting the stroke of the pressing cap (5) in the axial direction.
3. Device according to claim 1, characterized in that the axis of the core rod (4) is in line with the axis of the connecting head (2).
4. The device according to claim 1, wherein the first end of the connector (2) is provided with at least one groove therein, each groove being provided with a sealing ring;
the first end of connector (2) with pressure testing sleeve pipe (3) pass through the recess with sealing washer sealing connection.
5. The device of claim 1, wherein the first included angle is no greater than 60 ° and no less than 45 °;
the second included angle is not more than 45 degrees and not less than 30 degrees.
6. The device of claim 5, wherein the first included angle is 45 ° and the second included angle is 30 °.
7. Device according to claim 1, characterized in that the pressing cap (5) is screwed to the protruding part;
and the second end of the core rod (4) is welded with the pressure test pipeline (1).
8. Device according to claim 7, characterized in that the shape of the protruding portion and the shape of the pressing cap (5) are both hexagonal.
9. The device of claim 7, wherein the cross-sectional shape of the thread is trapezoidal.
10. Device according to claim 1, characterized in that the core rod (4) is of hollow construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120553256.0U CN215726551U (en) | 2021-03-17 | 2021-03-17 | Bridge plug pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120553256.0U CN215726551U (en) | 2021-03-17 | 2021-03-17 | Bridge plug pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215726551U true CN215726551U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120553256.0U Active CN215726551U (en) | 2021-03-17 | 2021-03-17 | Bridge plug pressure testing device |
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| Country | Link |
|---|---|
| CN (1) | CN215726551U (en) |
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2021
- 2021-03-17 CN CN202120553256.0U patent/CN215726551U/en active Active
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