Efficient assembly support of field hydraulic fracturing packer

Abstract

The utility model discloses an efficient assembly support of a field hydraulic fracturing packer. The efficient assembly support comprises a base, at least two supporting frames and supporting wheels. The at least two supporting frames are detachably arranged on the base; the supporting wheels are arranged on the supporting frames in a pivoted mode, and every two adjacent supporting wheels are spaced by a certain distance. The packers can be arranged on the two adjacent supporting wheels and can roll and rotate along with the supporting wheels. According to the efficient assembly support for the field hydraulic fracturing packer, the assembly work requirements of packers of various diameter specifications in various complex field test work environments can be met.

Description

Technical Field

[0001] The utility model relates to the field of engineering geological exploration, and particularly to an efficient assembly bracket for a field water pressure fracturing packer. Background Art

[0002] The detachable lightweight drill pipe type in-situ water pressure fracturing measurement system widely used in China consists of six parts: a pressure fluid control operation console, a high-pressure water pump, a power supply, a data recorder, a bridging packer, and a high-pressure fluid pipeline. In order to meet the diverse test requirements of engineering geological exploration in China, the test system must be designed in a detachable mode to facilitate transportation and use in various harsh test environments. The packer and the impression packer are important components of the detachable lightweight drill pipe type in-situ water pressure fracturing measurement system, and are used for sealing the rock mass in the test section and orienting the cracks induced by water pressure fracturing. The diameters of conventional geological boreholes are generally 76mm, 94mm, and 110mm, and the size of the packer should match the geological borehole, and the general diameter sizes are 72mm, 90mm, and 104mm. The rubber component and the steel component can form a complete packer and impression packer through standard assembly operations to meet the predetermined strength and sealing requirements. Generally, the assembly of a single packer is completed on the workshop workbench, with high efficiency and high assembly qualification rate. In the field test environment of in-situ stress measurement by water pressure fracturing, due to the diverse and complex field test environment, on-site only a simple assembly bracket can be formed by nearby wood, stones, or drilling steel parts, etc., and a pipe wrench or a free wrench is used to assemble the packer, which requires at least two people to cooperate to complete, with low assembly efficiency and unstable qualification rate. Therefore, the development of a special high-efficiency assembly bracket for field water pressure fracturing packers, which can not only adapt to diverse and complex field working environments, but also meet the strength and rotation requirements of packer assembly, is of great significance for improving the assembly efficiency and qualification rate of field packers and reducing the man-hour consumption.

[0003] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide an efficient assembly bracket for a field water pressure fracturing packer, which can meet the assembly work requirements of packers with various diameter specifications in diverse and complex field test working environments.

[0005] To achieve the above object, the present utility model provides an efficient assembly bracket for a hydraulic fracturing packer in the wild, which includes a base, at least two support frames and support wheels; at least two support frames are detachably arranged on the base; the support wheels are pivotally arranged on each support frame, and there is a distance between two adjacent support wheels; wherein the packer can be arranged on two adjacent support wheels and can roll and rotate along with the support wheels.

[0006] In a preferred embodiment, the base is in an inverted U-shaped structure when viewed from the length direction, the support frames are arranged at the top of the inverted U-shaped structure, and the axis of the support wheel is perpendicular to the length direction of the base.

[0007] In a preferred embodiment, the inverted U-shaped structure includes a plurality of installation long holes, the length direction of the installation long holes is parallel to the length direction of the base, the plurality of installation long holes form two rows along the length direction of the base, and are symmetrically arranged on both sides of the center line of the top surface of the inverted U-shaped structure in the length direction.

[0008] In a preferred embodiment, the installation long holes can realize the adjustment of the distance between two adjacent support wheels.

[0009] In a preferred embodiment, the support frame includes a positioning star, the positioning star is arranged at the middle position of the bottom of the support frame, and the connecting line between the center of the positioning star and the support wheel is perpendicular to the length direction of the base.

[0010] In a preferred embodiment, the positioning star is arranged on the support surface perpendicular to the axis of the support frame and the support wheel.

[0011] In a preferred embodiment, the base further includes scale lines, which are arranged on the top surface of the inverted U-shaped structure, and the scale lines cooperate with the positioning star to be able to display the center distance between two adjacent support wheels.

[0012] In a preferred embodiment, the efficient assembly bracket for a hydraulic fracturing packer in the wild further includes a handle, and the handle is detachably arranged at both ends of the top surface of the inverted U-shaped structure.

[0013] In a preferred embodiment, the efficient assembly bracket for a hydraulic fracturing packer in the wild further includes a cushion block, and the cushion block can be padded under the inverted U-shaped structure.

[0014] In a preferred embodiment, the material of the cushion block is metal or non-metal.

[0015] Compared with the prior art, the high-efficiency assembly bracket for the in-situ stress measurement system packer of the present utility model has the following beneficial effects: By fixing two high-strength support wheels on a steel base plate about 10 mm thick, the height of the support wheels meets the operation requirements for on-site assembly of the packer, facilitating on-site operators to use pipe wrenches or open-end wrenches for installation and disassembly operations; the support wheels can rotate flexibly forward and backward, meeting the rotation requirements during the thread installation and disassembly of the packer; at the same time, two high-strength handles are fixed at both ends of the base plate, facilitating on-site operators in the field to pick up the assembly bracket while wearing gloves. This solution provides a support space for packer assembly, facilitating the operation of pipe wrenches or open-end wrenches, and conforming to the operating habits of most on-site operators in the field, effectively improving the assembly efficiency and quality; the support wheels can rotate forward and backward, eliminating the need for a dedicated person to cooperate in rotating the packer, and the packer automatically rotates following the advancement and retraction of the thread on the bracket, saving manpower and improving efficiency; the support bracket is high in strength and light in weight. Two brackets are required for the assembly of a single packer, and three brackets are required for the assembly of the cross-connected packers in the whole in-situ stress measurement system. The brackets have the same height, basically ensuring that the assembly units are on a horizontal plane, effectively saving the centering time and improving the assembly quality and rate, and well overcoming the deficiencies of low assembly efficiency and low qualification rate in the in-situ stress measurement system packer for in-situ stress measurement in the field. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view structural schematic diagram of the high-efficiency assembly bracket according to an embodiment of the present utility model;

[0017] Figure 2 is a top view structural schematic diagram of the high-efficiency assembly bracket according to an embodiment of the present utility model;

[0018] Figure 3 is a front view working schematic diagram of the high-efficiency assembly bracket according to an embodiment of the present utility model;

[0019] Figure 4 is a top view working schematic diagram of the high-efficiency assembly bracket according to an embodiment of the present utility model;

[0020] Figure 5 is a three-dimensional working schematic diagram of the high-efficiency assembly bracket according to an embodiment of the present utility model.

[0021] MAIN REFERENCE NUMERAL DESCRIPTION:

[0022] 10 - Bracket assembly, 101 - Base, 1011 - Installation long hole, 1012 - Scale line, 102 - Support frame, 1021 - Positioning star, 103 - Support wheel, 104 - Handle, 20 - Packer, 30 - Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will describe in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiments.

[0024] Unless otherwise clearly stated, in the entire specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0025] As Figures 1 to 2 shown, a high-efficiency assembly bracket for a field hydraulic fracturing packer according to a preferred embodiment of the present utility model includes a base 101, at least two support frames 102, and support wheels 103; at least two support frames 102 are detachably arranged on the base 101 through bolts 30; the support wheels 103 are pivotally arranged on each support frame 102, and there is a distance between two adjacent support wheels 103; wherein the packer 20 can be arranged on two adjacent support wheels 103 and can roll and rotate along with the support wheels 103.

[0026] In some embodiments, when viewed from the length direction, the base 101 has an inverted U-shaped structure, the support frames 102 are arranged at the top of the inverted U-shaped structure, and the axis of the support wheel 103 is perpendicular to the length direction of the base 101.

[0027] In some embodiments, the inverted U-shaped structure includes a plurality of mounting long holes 1011, the length direction of the mounting long holes 1011 is parallel to the length direction of the base 101, the plurality of mounting long holes form two rows along the length direction of the base, and are symmetrically arranged on both sides of the center line of the top surface of the inverted U-shaped structure in the length direction.

[0028] In some embodiments, the mounting long holes 1011 can realize the adjustment of the distance between two adjacent support wheels 103, and this distance adjustment function can fully meet the assembly requirements of the packers 20 with diameters of 72 mm, 90 mm, and 104 mm or packers 20 with diameters other than the above.

[0029] In some embodiments, the number of the support frames 102 and the support wheels 103 can also be set to be multiple, such as but not limited to three. It is preferably that the center heights of all the support wheels 103 are the same relative to the top surface of the base 101. The arrangement of three support wheels 103 can meet the simultaneous test requirements of two packers 20.

[0030] In some embodiments, the support frame 102 includes a positioning star 1021, the positioning star 1021 is arranged at the middle position of the bottom of the support frame 102, and the connection line between the center of the positioning star 1021 and the support wheel 103 is perpendicular to the length direction of the base 101.

[0031] In some embodiments, the positioning star 1021 is disposed on a support surface of the support frame 102 perpendicular to the axis of the support wheel 103.

[0032] In some embodiments, the base 101 further includes a scale line 1012 disposed on the top surface of the inverted U-shaped structure. The scale line 1012 cooperates with the positioning star 1021 to be able to display the center distance between two adjacent support wheels 103. The support frame 102 can move within the length range of the installation long hole 1011 to adjust the center distance between two adjacent support wheels 103. The positioning star 1021 and the scale line 1012 cooperate to be able to intuitively display the data of the center distance, which is more conducive to quick adjustment.

[0033] In some embodiments, the high-efficiency assembly bracket for the in-situ hydraulic fracturing packer further includes a handle 104. The handle 104 is detachably disposed at both ends of the top surface of the inverted U-shaped structure through bolts 30. The handle 104 is beneficial for an operator to carry or move the bracket assembly 10.

[0034] In some embodiments, the high-efficiency assembly bracket for the in-situ hydraulic fracturing packer further includes a cushion block (not shown). The cushion block can be disposed at the lower part of the inverted U-shaped structure. The material of the cushion block is metal or non-metal, such as, but not limited to, a sleeper that can be inserted into the lower part of the inverted U-shaped structure. The function of the cushion block is to conveniently adjust the height of the assembly bracket at an uneven bottom surface in the field.

[0035] As Figures 3 to 5 shown, in some embodiments, the usage method of the high-efficiency assembly bracket for the in-situ hydraulic fracturing packer 20 of the present utility model is generally as follows: Support the packer 20 by using two assembly brackets and the cushion block, so that the packer 20 is basically on a horizontal plane; Fix one end of the packer 20 with a fixing device, and use a pipe wrench or a wrench to carry out tightening or disassembly operations at the other end; Two assembly brackets are required for assembling one packer 20, and three assembly brackets are required for assembling a set of bridging packers 20. The three assembly brackets are on the same straight line in the same plane, which can achieve quick centering and high-efficiency assembly; And more than 30% of the manpower can be saved after using the assembly bracket, and the working efficiency can be increased by more than 50%.

[0036] In summary, the high-efficiency assembly bracket for the in-situ water pressure fracturing packer of the present utility model has the following advantages: By fixing two high-strength support wheels on a steel base plate with a thickness of about 10 mm, the height of the support wheels meets the operation requirements for the in-situ assembly of the packer in the field, facilitating on-site operators to use pipe wrenches or open-end wrenches for installation and disassembly operations; the support wheels can rotate flexibly forward and backward, meeting the rotation requirements during the installation and disassembly of the packer's threads; at the same time, two high-strength handles are fixed at both ends of the base plate, facilitating on-site operators in the field to pick up the assembly bracket while wearing gloves. This solution provides a support space for the packer assembly, facilitating the operation of pipe wrenches or open-end wrenches, and also conforming to the operation habits of most on-site operators in the field, effectively improving the assembly efficiency and quality; the support wheels can rotate forward and backward, eliminating the need for a dedicated person to cooperate in rotating the packer, and the packer automatically rotates following the advancement and retraction of the threads on the bracket, saving manpower and improving efficiency; the support bracket is of high strength and light weight. Two brackets are required for the assembly of a single packer, and three brackets are required for the assembly of the cross-connected packers in the entire water pressure fracturing test system. The brackets have the same height, basically ensuring that the assembly units are on a horizontal plane, effectively saving the centering time and improving the assembly quality and rate, and well overcoming the deficiencies of low efficiency and low qualification rate in the in-situ assembly of the packer in the water pressure fracturing in-situ stress measurement system.

[0037] The foregoing description of specific exemplary embodiments of the present utility model has been presented for purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is obvious that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. An efficient assembly bracket for a field hydraulic fracturing packer, characterized in that: include: Base; at least two support frames, which are detachably arranged on the base; as well as A support wheel, which is pivotally mounted on each of the support frames, with a distance between two adjacent support wheels; The packer can be arranged on two adjacent support wheels and can roll and rotate along with the support wheels.

2. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 1, characterized in that: The base is an inverted U-shaped structure when viewed from the length direction, the support frame is arranged on the top of the inverted U-shaped structure, and the axis of the support wheel is perpendicular to the length direction of the base.

3. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 2, characterized in that: The inverted U-shaped structure includes a plurality of long mounting holes, the length direction of the long mounting holes is parallel to the length direction of the base, the plurality of long mounting holes form two rows along the length direction of the base, and are symmetrically arranged on both sides of the length direction center line of the top surface of the inverted U-shaped structure.

4. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 3, characterized in that: The mounting slot can realize the distance adjustment between two adjacent support wheels.

5. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 2, characterized in that: The support frame includes a positioning star, which is arranged at the middle position of the bottom of the support frame, and the center line connecting the positioning star and the supporting wheel is perpendicular to the length direction of the base.

6. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 5, characterized in that: The positioning star is arranged on a supporting surface of the supporting frame which is perpendicular to the axis of the supporting wheel.

7. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 5, characterized in that: The base also includes a scale line, which is arranged on the top surface of the inverted U-shaped structure. The scale line cooperates with the positioning star to display the center distance between two adjacent support wheels.

8. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 2, characterized in that: It also includes handles, which are detachably arranged on both ends of the top surface of the inverted U-shaped structure.

9. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 2, characterized in that: It also includes a pad block, which can be placed at the bottom of the inverted U-shaped structure.

10. The high-efficiency assembly bracket for field hydraulic fracturing packer according to claim 2, characterized in that: The material of the pad is metal or non-metal.

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