Hydraulic compensation adjusting device for single-pipe universal fracturing manifold

Abstract

The utility model relates to the technical field of oil field fracturing equipment, in particular to a hydraulic compensation adjusting device for a single-pipe universal fracturing manifold, which comprises a support plate and a hydraulic compensation jack assembly. The upper ends of the two manual quick-shaking type adjustable jacks are connected with the same upper supporting plate assembly, and an upper connecting plate is arranged on the top of the upper supporting plate assembly. The hydraulic compensation jack assembly is fixedly arranged at the top of the supporting plate and comprises a hydraulic jack, a high-pressure oil collecting block, an energy accumulator, an outer threaded connector, a shock-proof pressure gauge, a one-way valve and a connecting pipeline connector. The hydraulic compensation adjusting device can well solve the problem that a wellhead device directly bears the weight of a single-pipe universal manifold due to foundation sinking, and can play a certain role in buffering vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield fracturing equipment, in particular to a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold. Background Art

[0002] As oil and gas development becomes increasingly challenging, hydraulic fracturing has become an increasingly mainstream method of extraction. Large-scale fracturing operations have become the norm, and the resulting large-channel high- and low-pressure manifold skids have become mainstream. When connecting large-channel high- and low-pressure manifold skids to the wellhead, single-tube universal manifolds are often used. Currently, the bottom supports of single-tube universal high-pressure manifolds are all fixed rigid supports. During field wellsite operations, vibration from the fracturing manifold and incomplete or insufficiently hardened foundations often cause foundation sinking. While the wellhead assembly remains at a constant height, the weight of the over 10-ton single-tube universal high-pressure manifold is directly transferred to the wellhead assembly via bolts. During the fracturing operation, access to the high-pressure area is restricted for inspection and maintenance, and the height adjustment of the single-tube universal manifold base is impossible. This can easily lead to fractured bolts connecting the wellhead to the single-tube universal manifold, or the weight of the single-tube universal manifold resting entirely on the wellhead assembly, pulling the wellhead off course or damaging the wellhead assembly, potentially causing serious accidents.

[0003] In summary, there is an urgent need for a hydraulic compensation and adjustment support device that can resist the vibration of the manifold at all times, automatically compensate for the height in time after the foundation of the single-tube universal manifold and large-channel high and low pressure manifold skid sinks, and ensure the load-bearing capacity instead of the wellhead device. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold, which can solve the above technical problems.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A hydraulic compensating and adjusting device for a single-tube universal fracturing manifold, comprising a support plate and a hydraulic compensating jack assembly. Manual quick-shake adjustable jacks are symmetrically provided on the left and right ends of the top of the support plate. The upper ends of the two manual quick-shake adjustable jacks are connected to the same upper support plate assembly, and an upper connecting plate is provided on the top of the upper support plate assembly.

[0007] The hydraulic compensating jack assembly is fixed on the top of the support plate. The hydraulic compensating jack assembly includes a hydraulic jack, a high-pressure oil collecting block, an accumulator, an external threaded joint, a seismic pressure gauge, a one-way valve and a connecting pipeline joint. The hydraulic jack is connected to the high-pressure oil collecting block through a pipeline. One side of the top of the high-pressure oil collecting block is connected to the accumulator through an external threaded joint. The seismic pressure gauge is fixedly installed on the other side of the top of the high-pressure oil collecting block. A one-way valve is provided on the side of the high-pressure oil collecting block, and a connecting pipeline joint is provided on the one-way valve.

[0008] Preferably, the upper support plate assembly includes an upper support plate and ribs symmetrically arranged on both sides of the bottom of the upper support plate, and the upper ends of the two manual quick-shake adjustable jacks are respectively connected to the upper support plate through the two ribs.

[0009] Preferably, the hydraulic rod of the hydraulic jack passes through the upper support plate and is connected to the middle part of the upper connecting plate through the upper top plate of the jack.

[0010] Preferably, guide rod assemblies are symmetrically provided at the front and rear ends of the top of the support plate. The guide rod assembly includes a guide rod, a guide seat and a locking nut. The guide rod is movably arranged in the guide seat and is locked by the locking nut.

[0011] Preferably, lifting screw holes are provided on the four corners of the upper connecting plate, and eye screws are installed in the lifting screw holes.

[0012] Compared with existing technologies, the present invention offers the following advantages: The hydraulic compensating adjustment device effectively addresses the issue of the wellhead assembly directly bearing the weight of the single-tube universal manifold due to foundation sinking, and also provides a certain degree of vibration dampening. When foundation sinks, the height of the single-tube universal manifold remains virtually unchanged, rendering the mechanical support ineffective. At this point, the hydraulic compensating jack assembly compensates for the reduced height, allowing the support assembly to continue to bear the weight of the single-tube universal manifold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a diagram of the use state of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the hydraulic compensating jack assembly of the utility model;

[0017] Figure 4 This is a schematic diagram of the upper support plate assembly structure of the present utility model;

[0018] Figure 5 This is a schematic diagram of the guide rod assembly structure of the present utility model;

[0019] Figure 6 This is the on-site assembly drawing of the utility model.

[0020] Description of reference numerals:

[0021] 1-Support plate, 2-Hydraulic compensation jack assembly, 21-Hydraulic jack, 22-High-pressure oil collecting block, 23-Accumulator, 24-External threaded connector, 25-Seismic pressure gauge, 26-Check valve, 27-Connecting pipeline connector, 3-Manual quick-shake adjustable jack, 4-Upper support plate assembly, 41-Upper support plate, 42-Rib plate, 5-Upper connecting plate, 6-Guide rod assembly, 61-Guide rod, 62-Guide seat, 63-Locking nut, 7-Lifting screw hole, 8-Lifting eye screw. DETAILED DESCRIPTION

[0022] The following describes the invention of the present invention in detail by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Example

[0023] like Figures 1 to 6 As shown, the utility model discloses a hydraulic compensation and adjustment device for a single-tube universal fracturing manifold, the hydraulic compensation and adjustment device includes a support plate 1 and a hydraulic compensation jack assembly 2, the hydraulic compensation jack assembly 2 is connected to the top of the support plate 1 by bolts, the hydraulic compensation jack assembly 2 includes a hydraulic jack 21, a high-pressure oil collecting block 22, an accumulator 23, an external threaded joint 24, a seismic pressure gauge 25, a one-way valve 26 and a connecting pipeline joint 27, the hydraulic jack 21 is connected to the high-pressure oil collecting block 22 through a pipeline, the top side of the high-pressure oil collecting block 22 is connected to the accumulator 23 through an external threaded joint 24, the accumulator 23 has high-pressure hydraulic oil inside, the seismic pressure gauge 25 is fixedly installed on the other side of the top of the high-pressure oil collecting block 22, a one-way valve 26 is provided on the side of the high-pressure oil collecting block 22, and a connecting pipeline joint 27 is provided on the one-way valve 26. During operation, hydraulic oil is pumped into the hydraulic jack 21 via a hand-operated pump, allowing the hydraulic jack 21 to bear the upper pressure. When the foundation sinks, the height of the single-tube universal manifold remains almost unchanged, and the mechanical support fails. At this time, the high-pressure hydraulic oil in the accumulator 23 continues to fill the hydraulic jack 21, compensating for the lowered height and allowing the compensation device to continue to bear the weight of the single-tube universal manifold.

[0024] Manual quick-shake adjustable jacks 3 are symmetrically provided at the left and right ends of the top of the support plate 1. The manual quick-shake adjustable jacks 3 are connected to the support plate 1 by bolts, and can be quickly lifted and lowered to adjust the height by quick shaking; the upper ends of the two manual quick-shake adjustable jacks 3 are connected to the same upper support plate assembly 4, and the upper support plate assembly 4 includes an upper support plate 41 and ribs 42 symmetrically arranged on both sides of the bottom of the upper support plate 41. The upper ends of the two manual quick-shake adjustable jacks 3 are respectively connected to the upper support plate 41 through two ribs 42, and the manual quick-shake adjustable jacks 3 are connected to the ribs 42 by bolts; an upper connecting plate 5 is provided on the top of the upper support plate 41, and lifting screw holes 7 are opened on the four corners of the upper connecting plate 5, and lifting eye screws 8 are installed in the lifting screw holes 7.

[0025] Furthermore, in this embodiment, the hydraulic rod of the hydraulic jack 21 passes through the upper support plate 41 and is connected to the middle part of the upper connecting plate 5 through the upper top plate of the jack. The upper top plate of the jack is connected to the hydraulic jack 21 and the upper connecting plate 5 respectively by bolts. By setting the upper top plate of the jack to connect the hydraulic jack 21 and the upper connecting plate 5, it is helpful to prevent local deformation and damage of the upper connecting plate 5.

[0026] Furthermore, in this embodiment, guide rod assemblies 6 are symmetrically provided at the front and rear ends of the top of the support plate 1. The guide rod assembly 6 comprises a guide rod 61, a guide seat 62, and a locking nut 63. The guide rod 61 is movably disposed within the guide seat 62 and is locked by the locking nut 63. The top end of the guide rod 61 passes through the upper support plate 41 and is welded to the upper connecting plate 5, while the bottom end of the guide seat 62 is welded to the support plate 1. When the manual quick-crank adjustable jack 3 is raised, the guide rod 61 slides away from the guide seat 62, acting as a guide. After the locking nut 63 locks the height, the upper connecting plate 5 cannot be lowered, thereby preventing deflection and also allowing for fine-tuning of the height.

[0027] During operation, install the hydraulic compensation adjustment device below the single-tube universal manifold cross-piece, supporting the three cross-pieces, two flanged straight pipes, and blind flange above it. After the single-tube universal manifold and the fracturing manifold are skid-connected, shake the manual quick-crank adjustable jack 3 so that the upper support plate assembly 4 pushes the upper connecting plate 5 to support the cross-piece in place. Hammer the locking nut 63 of the guide rod assembly 6 to lock the height. Use a hand pump to inject oil into the hydraulic jack 21 through the check valve 26 of the hydraulic compensation jack assembly 2 to increase pressure, applying force to the hydraulic rod. When the seismic-resistant pressure gauge 25 displays a predetermined pressure, stop pressurizing. (This assumes that the accumulator 23 has been inflated to the predetermined pressure according to design requirements before pressurization.) When the foundation sinks, the height of the single-tube universal manifold remains virtually unchanged, rendering the mechanical support ineffective. At this point, the high-pressure hydraulic oil in the accumulator 23 continues to fill the hydraulic jack 21, compensating for the reduced height. This allows the support device to continue to bear the weight of the single-tube universal manifold and cushion the vibrations generated by the manifold, protecting the wellhead and the single-tube universal manifold. After one layer of construction is completed, the hydraulic compensation adjustment device of the single-tube universal fracturing manifold is inspected. The height of the manual quick-crank adjustable jack 3 is adjusted based on the sinking condition, the locking nut 63 of the guide rod assembly 6 is adjusted and repositioned, and the hydraulic compensation jack assembly 2 is refilled with oil to reach the set pressure before continuing with the next fracturing operation.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and application concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A hydraulic compensating and adjusting device for a single-tube universal fracturing manifold, characterized by: The hydraulic compensation adjustment device comprises a support plate (1) and a hydraulic compensation jack assembly (2), wherein manual quick-shake adjustable jacks (3) are symmetrically provided at the left and right ends of the top of the support plate (1), and the upper ends of the two manual quick-shake adjustable jacks (3) are connected to the same upper support plate assembly (4), and the top of the upper support plate assembly (4) is provided with an upper connecting plate (5); The hydraulic compensating jack assembly (2) is fixed on the top of the support plate (1). The hydraulic compensating jack assembly (2) includes a hydraulic jack (21), a high-pressure oil collecting block (22), an accumulator (23), an external threaded joint (24), a seismic pressure gauge (25), a one-way valve (26) and a connecting pipeline joint (27). The hydraulic jack (21) is connected to the high-pressure oil collecting block (22) through a pipeline. One side of the top of the high-pressure oil collecting block (22) is connected to the accumulator (23) through an external threaded joint (24). The seismic pressure gauge (25) is fixedly installed on the other side of the top of the high-pressure oil collecting block (22). A one-way valve (26) is provided on the side of the high-pressure oil collecting block (22). A connecting pipeline joint (27) is provided on the one-way valve (26).

2. A hydraulic compensating and adjusting device for a single-tube universal fracturing manifold according to claim 1, characterized in that: The upper support plate assembly (4) comprises an upper support plate (41) and ribs (42) symmetrically arranged on both sides of the bottom of the upper support plate (41), and the upper ends of the two manual quick-shake adjustable jacks (3) are respectively connected to the upper support plate (41) via the two ribs (42).

3. A hydraulic compensating and adjusting device for a single-tube universal fracturing manifold according to claim 2, characterized in that: The hydraulic rod of the hydraulic jack (21) passes through the upper support plate (41) and is connected to the middle of the upper connecting plate (5) through the jack upper top plate.

4. The hydraulic compensating and adjusting device for a single-tube universal fracturing manifold according to claim 1, characterized in that: A guide rod assembly (6) is symmetrically provided at the front and rear ends of the top of the support plate (1). The guide rod assembly (6) comprises a guide rod (61), a guide seat (62) and a locking nut (63). The guide rod (61) is movably arranged in the guide seat (62) and is locked by the locking nut (63).

5. The hydraulic compensating and adjusting device for a single-tube universal fracturing manifold according to claim 1, characterized in that: The four corners of the upper connecting plate (5) are each provided with a lifting screw hole (7), and a lifting eye screw (8) is installed in the lifting screw hole (7).

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