Preparation method of hydraulic compensation adjusting device for single-pipe universal fracturing manifold

Abstract

A preparation method of a hydraulic compensation adjusting device for a single-pipe universal fracturing manifold relates to the technical field of oil field fracturing equipment, and comprises the following steps: step 1, preparing a rectangular bottom support plate, and symmetrically welding guide rod assemblies at the front and rear ends of the top of the support plate; secondly, a hydraulic compensation jack assembly is installed on the top of the supporting plate through bolts; thirdly, manual fast-shaking type adjustable jacks are symmetrically installed at the left end and the right end of the top of the supporting plate and fixed through bolts; fourthly, an upper supporting plate assembly is connected with the upper ends of the two manual quick-shaking type adjustable jacks through bolts; fifthly, the upper end of a guide rod assembly penetrates through an upper supporting plate assembly and then is welded to an upper connecting plate, and a hydraulic rod of a hydraulic jack in a hydraulic compensation jack assembly penetrates through the upper supporting plate assembly and then is connected with the upper connecting plate through a bolt; according to the hydraulic compensation adjusting device, the problem that a wellhead device directly bears the weight of a single-pipe universal manifold due to foundation sinking can be well solved.

Description

Technical Field

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

[0002] With the increasing difficulty of oil and gas development, hydraulic fracturing has become more and more the mainstream oil and gas extraction method, and large-scale fracturing construction has become the norm. The use of large-channel high and low pressure manifold skids has become the mainstream. When using large-channel high and low pressure manifold skids to connect the wellhead, single-tube universal manifolds are often used. At present, the bottom support of the single-tube universal high-pressure manifold uses fixed rigid support. During field well site operations, the vibration of the fracturing manifold and the incomplete hardening or insufficient hardening depth of the foundation often cause the foundation to sink, while the height of the wellhead device remains unchanged, resulting in the weight of more than ten tons of single-tube universal high-pressure manifolds directly transferred to the wellhead device by bolts. During the fracturing process, the high-pressure area cannot be entered for inspection and maintenance, and the height of the single-tube universal manifold base cannot be adjusted in time. This can easily lead to the bolts connecting the wellhead and the single-tube universal manifold breaking or the weight of the single-tube universal manifold is fully supported on the wellhead device, pulling the wellhead off or causing damage to the wellhead device, resulting in serious accidents.

[0003] In summary, it is extremely urgent to invent 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 the large-channel high and low pressure manifold skids sinks, and ensure the load-bearing rather than the load-bearing of the wellhead device. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing 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 object, the present invention provides the following technical solutions: A method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold comprises the following steps: Step 1: Prepare a rectangular bottom support plate, and weld the guide rod assembly symmetrically at the front and rear ends of the top of the support plate; Step 2: Install the hydraulic compensating jack assembly to the top of the support plate with bolts; Step 3: Install manual quick-shake adjustable jacks symmetrically on the left and right ends of the top of the support plate and secure them with bolts; Step 4: Connect the upper support plate assembly to the upper ends of two manual quick-shake adjustable jacks through bolts; Step 5. The upper end of the guide rod assembly passes through the upper support plate assembly and is welded to the upper connecting plate. The hydraulic rod of the hydraulic jack in the hydraulic compensation jack assembly passes through the upper support plate assembly and is connected to the upper connecting plate by bolts, and the hydraulic jack is located at the center of the upper connecting plate.

[0006] A method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold, the method being implemented based on the hydraulic compensating and adjusting device, the hydraulic compensating and adjusting device comprising a support plate and a hydraulic compensating jack assembly, the left and right ends of the top of the support plate being symmetrically provided with manual quick-shaking adjustable jacks, the upper ends of the two manual quick-shaking adjustable jacks being connected to the same upper support plate assembly, the top of the upper support plate assembly being provided with an upper connecting plate; 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, and 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.

[0007] Preferably, the upper support plate assembly includes an upper support plate and rib plates 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 rib plates.

[0008] Preferably, the hydraulic rod of the hydraulic jack passes through the upper support plate and is connected to the middle of the upper connecting plate through the upper top plate of the jack.

[0009] Preferably, guide rod assemblies are symmetrically provided at the front and rear ends of the top of the support plate, and 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 locked by the locking nut.

[0010] Preferably, four corners of the upper connecting plate are provided with lifting screw holes, and eye screws are installed in the lifting screw holes.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the hydraulic compensating adjustment device of the present invention can well solve the problem that the wellhead device directly bears the weight of the single-tube universal manifold due to the sinking of the foundation, and can play a certain role in buffering vibration. When the foundation sinks, the height of the single-tube universal manifold remains almost unchanged, and the mechanical support fails. At this time, the hydraulic compensating jack assembly will compensate for the reduced height, so that the support device continues to bear the weight of the single-tube universal manifold. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a usage state diagram of the present invention; Figure 3 It is a schematic diagram of the structure of the hydraulic compensating jack assembly of the present invention; Figure 4 It is a schematic diagram of the upper support plate assembly structure of the present invention; Figure 5 It is a schematic diagram of the guide rod assembly structure of the present invention; Figure 6 This is an assembly diagram for on-site use of the present invention.

[0014] Description of reference numerals: 1-support plate, 2-hydraulic compensation jack assembly, 21-hydraulic jack, 22-high-pressure oil collecting block, 23-accumulator, 24-external threaded joint, 25-seismic pressure gauge, 26-check valve, 27-connecting pipeline joint, 3-manual fast-shaking 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

[0015] The following is a detailed description of the invention by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all of the embodiments.

[0016] Embodiment 1 like Figures 1 to 6As shown, the present invention discloses a hydraulic compensation and adjustment device for a single-tube universal fracturing manifold, the hydraulic compensation and adjustment device comprises 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 comprises 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 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 arranged on the side of the high-pressure oil collecting block 22, and a connecting pipeline joint 27 is arranged on the one-way valve 26. When in use, hydraulic oil is injected into the hydraulic jack 21 through a hand pump, and the hydraulic jack 21 bears 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, since there is high-pressure hydraulic oil in the accumulator 23, the hydraulic jack 21 will continue to be filled with oil to compensate for the reduced height, so that the compensation device continues to bear the weight of the single-tube universal manifold.

[0017] 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 and adjusted in 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 rib plates 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 through two rib plates 42, and the manual quick-shake adjustable jacks 3 are connected to the rib plates 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.

[0018] 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 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.

[0019] Furthermore, in this embodiment, guide rod assemblies 6 are symmetrically arranged at the front and rear ends of the top of the support plate 1. The guide rod assembly 6 includes 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. The top end of the guide rod 61 passes through the upper support plate 41 and is welded to the upper connecting plate 5, and the bottom end of the guide seat 62 is welded to the support plate 1. When the manual fast-shaking adjustable jack 3 rises, the guide rod 61 slides and separates from the guide seat 62 to play a guiding role. After the locking nut 63 locks the height, the upper connecting plate 5 cannot be lowered, which plays a role in preventing deflection and also plays a role in fine-tuning the height.

[0020] When in use, install the hydraulic compensation adjustment device below the single-tube universal manifold four-way to support the three four-way, two flange straight pipes and blind flange above it. After the single-tube universal manifold and the fracturing manifold are pried and connected, shake the manual quick-shake adjustable jack 3 so that the upper support plate assembly 4 pushes the upper connecting plate 5 to support the four-way in place, and hammer the locking nut 63 of the guide rod assembly 6 to lock the height. Use a hand pump to inject oil and increase pressure into the hydraulic jack 21 through the one-way valve 26 of the hydraulic compensation jack assembly 2, so that the hydraulic rod is stressed. When the seismic-resistant pressure gauge 25 shows a certain predetermined pressure, stop pressurizing. (The premise is that the accumulator 23 has been inflated to the predetermined pressure according to the design requirements before pressurization). When the foundation sinks, the height of the single-tube universal manifold remains almost unchanged, and the mechanical support fails. At this time, since there is high-pressure hydraulic oil inside the accumulator 23, the hydraulic jack 21 will continue to be filled with oil to compensate for the reduced height, so that the support device continues to bear the weight of the single-tube universal manifold and can play a certain buffering role on the vibration caused by the manifold, protecting the wellhead and the single-tube universal manifold. After the construction of one layer is completed, the hydraulic compensation adjustment device of the single-tube universal fracturing manifold is inspected, and the height of the manual fast-shaking adjustable jack 3 is adjusted according to the sinking situation, and the height of the locking nut 63 of the guide rod assembly 6 is adjusted and repositioned, and the hydraulic compensation jack assembly 2 is filled with oil again to reach the set pressure, and the next stage of fracturing construction is continued.

[0021] Embodiment 2 The present invention also discloses a method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold, comprising the following steps: Step 1: prepare a rectangular bottom support plate 1, and symmetrically weld the guide rod assembly 6 at the front and rear ends of the top of the support plate 1; Step 2: Install the hydraulic compensating jack assembly 2 to the top of the support plate 1 by means of bolts; Step 3: Install manual quick-shake adjustable jacks 3 symmetrically on the left and right ends of the top of the support plate 1 and fix them with bolts; Step 4: Connect the upper support plate assembly 4 to the upper ends of the two manual quick-shake adjustable jacks 3 through bolts; Step 5. The upper end of the guide rod assembly 6 passes through the upper support plate assembly 4 and is welded to the upper connecting plate 5. The hydraulic rod of the hydraulic jack 21 in the hydraulic compensating jack assembly 2 passes through the upper support plate assembly 4 and is connected to the upper connecting plate 5 by bolts, so that the hydraulic jack 21 is located at the center of the upper connecting plate 5.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and application concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold, characterized in that: The following steps are involved: Step 1: prepare a rectangular bottom support plate (1), and symmetrically weld the guide rod assembly (6) at the front and rear ends of the top of the support plate (1); Step 2: Install the hydraulic compensating jack assembly (2) onto the top of the support plate (1) by means of bolts; Step 3: Install manual quick-shake adjustable jacks (3) symmetrically on the left and right ends of the top of the support plate (1) and secure them with bolts; Step 4: Connect the upper support plate assembly (4) to the upper ends of the two manual quick-shake adjustable jacks (3) through bolts; Step 5: The upper end of the guide rod assembly (6) passes through the upper support plate assembly (4) and is then welded to the upper connecting plate (5); the hydraulic rod of the hydraulic jack (21) in the hydraulic compensating jack assembly (2) passes through the upper support plate assembly (4) and is then connected to the upper connecting plate (5) by bolts, and the hydraulic jack (21) is located at the center of the upper connecting plate (5).

2. The method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold according to claim 1, characterized in that: The method is implemented based on a hydraulic compensation adjustment device, the hydraulic compensation adjustment device comprising a support plate (1) and a hydraulic compensation jack assembly (2), the left and right ends of the top of the support plate (1) are symmetrically provided with manual quick-shake adjustable jacks (3), 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 fixedly mounted on the top of the support plate (1). The hydraulic compensating jack assembly (2) comprises 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) via a pipeline. One side of the top of the high-pressure oil collecting block (22) is connected to the accumulator (23) via an external threaded joint (24). The seismic pressure gauge (25) is fixedly mounted on the other side of the top of the high-pressure oil collecting block (22). A one-way valve (26) is arranged on the side of the high-pressure oil collecting block (22). A connecting pipeline joint (27) is arranged on the one-way valve (26).

3. The method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold as claimed in claim 2, characterized in that: The upper support plate assembly (4) comprises an upper support plate (41) and rib plates (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 rib plates (42).

4. The method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold as claimed in claim 3, 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 upper top plate of the jack.

5. The method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold as claimed in claim 2, characterized in that: Guide rod assemblies (6) are symmetrically arranged at the front and rear ends of the top of the support plate (1), and 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).

6. The method for preparing a hydraulic compensating and adjusting device for a single-tube universal fracturing manifold as claimed in claim 2, characterized in that: The upper connecting plate (5) has four corners each provided with a lifting screw hole (7), and eye screws (8) are installed in the lifting screw holes (7).

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