Drilling fluid lifting device

Abstract

The invention relates to the technical field of oil field oil production engineering, in particular to a drilling fluid lifting device. The problems that the labor intensity is increased and the environment is polluted due to the fact that existing drilling mud needs to be stored in a mud pool and then conveyed are mainly solved. The drilling fluid lifting device comprises a fixing seat (1), the fixing seat (1) is connected with a horizontal sliding way through a rotating shaft (2), the horizontal sliding way is provided with a vertical sliding way (7) capable of moving in the horizontal direction, the vertical sliding way (7) is connected with a lifting pump support (10) in a sliding mode, and a lifting pump (11) is fixed to the lifting pump support (10). According to the drilling fluid lifting device, slurry lifting can be achieved at a well mouth, a slurry pool is prevented from being dug in front of a drilling machine base, labor intensity is lowered, pollution to the environment is reduced, and operation is safer.

Description

Technical Field

[0001] The invention relates to the field of oil and gas field development, in particular to a drilling fluid lifting device. Background Art

[0002] Currently, in accordance with safety and environmental management requirements, during drilling operations, in order to reduce or avoid mud pollution to the environment, a transitional drilling fluid pool is usually dug behind the ramp in front of the base when the drilling fluid is returned to the surface. The mud is then pumped to the mud tank via a vertical pump to achieve drilling fluid circulation. This process presents the following problems: the presence of the mud transition pool in front of the base increases the area of ​​environmental pollution caused by the drilling fluid, and the transition pool is prone to collapse, causing the derrick base to tilt forward; before drilling and after completion, disassembly and assembly at heights of 3.3 meters or above is required, which is labor-intensive and poses safety risks; the excavation of the transition pool requires equipment such as excavators, manual repair and shaping, and the laying of anti-seepage cloth and backfilling after completion. This is labor-intensive, time-consuming, and prone to leakage, which can pollute the environment. Summary of the Invention

[0003] In order to overcome the shortcomings of existing drilling mud that requires storage in a mud pool before transportation, which increases labor intensity and pollutes the environment, the present invention provides a drilling fluid lifting device. The drilling fluid lifting device can lift the mud at the wellhead, avoiding the need to dig a mud pool in front of the drilling rig base, reducing labor intensity, reducing environmental pollution, and making operation safer.

[0004] The technical solution of the present invention is: a drilling fluid lifting device, including a fixed seat, the fixed seat is connected to a horizontal slide through a rotating shaft, the horizontal slide is provided with a vertical slide that can move in the horizontal direction, the vertical slide is slidably connected to a lifting pump bracket, and the lifting pump is fixed on the lifting pump bracket.

[0005] Furthermore, the horizontal slide includes a cantilever and a horizontal slide rail, one end of the cantilever is connected to the fixed seat via a vertical rotating shaft, and the other end is connected to the horizontal slide rail via a vertical intermediate shaft.

[0006] Furthermore, the cantilever is L-shaped, the end of the short arm of the L-shape is connected to the fixed seat through a rotating shaft, and the end of the long arm of the L-shape is connected to the horizontal slide rail through an intermediate shaft.

[0007] Furthermore, the horizontal slide rail is provided with a roller that can roll along the surface of the slide rail, and the roller is connected to the vertical slide rail via a rotating shaft.

[0008] Furthermore, the vertical slide includes two vertical slide rails, the two vertical slide rails are connected via a vertical slide bracket, and the roller is connected to the vertical slide bracket via a rotating shaft.

[0009] Furthermore, the vertical slide is slidably connected to a lift pump bracket, and the lift pump is fixed on the lift pump bracket.

[0010] Furthermore, there are two cantilevers and two horizontal slide rails, the two cantilevers are parallel to each other, the two horizontal slide rails are parallel to each other, and the two horizontal slide rails are connected by tie bars.

[0011] Furthermore, a limit pin is provided between the vertical slide and the horizontal slide rail to fix the position of the vertical slide.

[0012] Furthermore, a limiting baffle is provided at the bottom of the vertical slideway to limit the lifting pump bracket.

[0013] Furthermore, two cross beams are fixed on the lift pump bracket, and the lift pump is fixed on the cross beams.

[0014] The present invention has the following beneficial effects: due to the adoption of the above-mentioned scheme, the device includes a horizontal slide and a vertical slide, the vertical slide can slide horizontally along the horizontal slide, and the lifting pump can slide up and down along the vertical slide, thereby changing the horizontal and vertical positions of the lifting pump. After using this device, mud lifting can be achieved at the wellhead, thereby avoiding the deep excavation of a mud transition pool in front of the drilling rig base, thereby reducing the area of ​​mud pollution to the environment, avoiding the forward tilt of the derrick base, and at the same time reducing the workload of earth backfilling and the cost of anti-seepage cloth materials. After calculation, each well can save more than 4,000 yuan. It also further reduces the labor intensity of on-site employees and the frequency of use of excavation equipment; after the lifting installation is completed, there is no need to disassemble and assemble the original vertical pump before drilling, and production requirements can be met, because the safety risks generated during disassembly and assembly are eliminated, the labor intensity is reduced, the work efficiency is improved, and the operating costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view of the present invention (excluding the lift pump); Figure 2 It is a top view of the present invention.

[0016] In the figure, 1-fixed seat, 2-rotating shaft, 3-cantilever, 4-intermediate shaft, 5-horizontal slide rail, 6-vertical slide bracket, 7-lifting slide, 8-roller, 9-tension rod, 10-lift pump bracket, 11-crossbeam, 12-lift pump. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and embodiments, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative efforts shall fall within the scope of protection of the present invention.

[0018] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “inside”, “outside”, “top”, “bottom”, etc. are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0019] Depend on Figure 1 、 Figure 2 As shown, a drilling fluid lifting device includes a fixed base 1, one side of which is provided with a fixed plate that can be fixed to the drilling rig base or crossbeam. There are two fixed bases 1, with a rotating shaft 2 disposed between the two fixed bases 1. A horizontal slide is connected to the rotating shaft 2, and the horizontal slide can rotate about the rotating shaft 2. The horizontal slide includes a cantilever 3 and a horizontal slide rail 5. Each of the cantilever 3 and the horizontal slide rail 5 is two in number. The two cantilevers 3 and the horizontal slide rail 5 are parallel to each other and connected by a tie bar 9. The two cantilevers 3 are also connected by reinforcing ribs to increase overall strength. Both cantilevers 3 are L-shaped, with the short ends of the L-shaped arms connected to the rotating shaft 2, which is connected between the two fixed bases 1. The long ends of the L-shaped arms of the cantilever 3 are connected to an intermediate shaft 4. Connecting plates are fixed at each end of the intermediate shaft 4, and the horizontal slide rail 5 is fixed between the two connecting plates, allowing the horizontal slide rail 5 to rotate about the intermediate shaft 4. The rotating shaft 2 and the intermediate shaft 4 are both vertical, and the angle and position of the horizontal slide rail 5 can be changed by rotating the rotating shaft 2 and the intermediate shaft 4 twice. The cantilever 3 can also adopt a telescopic structure, extending or shortening as needed to increase the coverage area of ​​the horizontal slide rail 5 when rotating.

[0020] The horizontal rail 5 is provided with rollers 8 that can roll along the surface of the horizontal rail 5. There are four rollers 8, two of which are located on the upper portion of the upper rail and two on the lower portion of the lower rail. The four rollers 8 are connected to the vertical slide 7 via their respective rotating shafts. Since the four rollers 8 are located on the upper and lower sides of the horizontal rail 5, the vertical slide 7 is mounted on the surface of the horizontal rail 5, allowing the vertical slide 7 to move along the surface of the rail. At the same time, the position of the vertical slide 7 is changed by the rotation of the horizontal rail 5 and the cantilever 3 along the intermediate shaft 4 and the rotating shaft 2. A limit pin is provided between the vertical slide 7 and the horizontal rail 5 to fix the position of the vertical slide 7.

[0021] The vertical slide 7 includes two vertical slide rails, which are connected by two vertical slide brackets 6. The vertical slide rails and the vertical slide brackets 6 form a frame structure. The roller 8 is connected to the vertical slide bracket 6 via a rotating shaft, so that the frame structure can move as a whole along the horizontal slide rail 5. The vertical slide 7 is slidably connected to the lift pump bracket 10. The lift pump bracket 10 can be fixed on the two vertical slide rails. Two cross beams 11 are fixed on the lift pump bracket 10, and the lift pump 12 is fixed on the two cross beams 11. A limit pin is provided between the lift pump bracket 10 and the vertical slide rail to fix the position of the lift pump 12. A limit baffle is provided at the bottom of the vertical slide rail to limit the lift pump bracket 10 and prevent the lift pump bracket 10 and the lift pump 12 from falling from the bottom. The top of the cross beam 11 of the lift pump bracket 10 can be connected to a guide chain, and the lift pump 12 can be driven up and down by manual or automatic guide chain. The lifting pump 12 adopts a 55KW high-power self-priming lifting pump. The transmission of the motor and the vertical pump is changed from belt drive to direct connection, the long axis is changed to a short axis, the volume is reduced, and it is easy to disassemble and transport; the suction capacity is changed to meet the production requirements of lift and displacement.

[0022] The lifting device is installed on the drilling rig base column and crossbeam through a fixed base 1. The horizontal slide rail 5, cantilever 3, rotating shaft 2, and intermediate shaft 4 together form a retractable and movable structure. When the lifting pump 12 is working, the lifting pump is moved to the appropriate position according to the wellhead position. After starting, the wellhead mud can be transported to the mud truck. When the lifting pump needs to be repaired or replaced, the vertical slide 7 and the lifting pump 12 can be moved horizontally back to the outside of the ship (i.e., a relatively open space, which is convenient for replacement or repair) to complete the disassembly, replacement, or maintenance of the lifting pump. When the height of the lifting pump 12 needs to be adjusted, the height of the lifting pump is adjusted in the cantilever lifting slide by using the manual or automatic guide chain stroke, thereby realizing the lifting operation of the wellhead drilling fluid.

[0023] After using this device, mud can be lifted at the wellhead, thus avoiding the deep mud transition pool dug in front of the drilling rig base, thereby reducing the area of ​​mud pollution to the environment, preventing the derrick base from tilting forward, and reducing the workload of earth backfill. It also further reduces the labor intensity of on-site employees and the frequency of use of excavation equipment, as well as the cost of anti-seepage cloth materials. After calculation, each well can save more than 4,000 yuan. After the lifting installation is completed, there is no need to disassemble and assemble the original vertical pump before drilling to meet production requirements, because the safety risks generated during disassembly and assembly are reduced, labor intensity is reduced, work efficiency is improved, and operating costs are saved.

[0024] The device was tested in June 2021 on 35 wells at Teams 15140 and 15160 of the Daqing Oilfield. The two ZJ15 / 30 drilling rigs required a transitional mud pit dug behind the ramp at the front gate of the base. The device reduced average assembly and disassembly time by approximately 30 minutes, reducing the risk of high-altitude assembly and disassembly, improving work efficiency, saving operating costs, and ensuring safer operation.

[0025] While various embodiments of the present invention have been described above, the above descriptions are intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A drilling fluid lifting device, comprising a fixing seat (1), characterized in that: The fixing seat (1) is connected to a horizontal slide via a rotating shaft (2), the horizontal slide is provided with a vertical slide (7) movable in a horizontal direction, the vertical slide (7) is slidably connected to a lifting pump bracket (10), and a lifting pump (11) is fixed to the lifting pump bracket (10).

2. The drilling fluid lifting device according to claim 1, characterized in that: The horizontal slide comprises a cantilever (3) and a horizontal slide rail (5); one end of the cantilever (3) is connected to the fixed seat (1) via a vertical rotating shaft (2), and the other end is connected to the horizontal slide rail (5) via a vertical intermediate shaft (4).

3. The drilling fluid lifting device according to claim 2, characterized in that: The cantilever (3) is L-shaped, the short arm end of the L-shaped cantilever is connected to the fixed seat (1) via a rotating shaft (2), and the long arm end of the L-shaped cantilever is connected to the horizontal slide rail (5) via an intermediate shaft (4).

4. The drilling fluid lifting device according to claim 3, characterized in that: The horizontal slide rail (5) is provided with a roller (8) that can roll along the surface of the slide rail, and the roller (8) is connected to the vertical slide rail (7) via a rotating shaft.

5. The drilling fluid lifting device according to claim 4, characterized in that: The vertical slide (7) includes two vertical slide rails, which are connected via a vertical slide bracket (6), and the roller (8) is connected to the vertical slide bracket (6) via a rotating shaft.

6. The drilling fluid lifting device according to claim 5, characterized in that: The vertical slideway (7) is slidably connected to a lifting pump bracket (10), and a lifting pump (12) is fixed on the lifting pump bracket (10).

7. The drilling fluid lifting device according to claim 6, characterized in that: There are two cantilevers (3) and two horizontal slide rails (5), the two cantilevers (3) are parallel to each other, the two horizontal slide rails (5) are parallel to each other, and the two horizontal slide rails (5) are connected via a tie rod (9).

8. The drilling fluid lifting device according to claim 7, characterized in that: A limiting pin is provided between the vertical slideway (7) and the horizontal slide rail (5) for fixing the position of the vertical slideway (7).

9. The drilling fluid lifting device according to claim 8, characterized in that: A limiting baffle is provided at the bottom of the vertical slideway (7) to limit the position of the lifting pump bracket (10).

10. The drilling fluid lifting device according to claim 9, characterized in that: Two cross beams (11) are fixed on the lifting pump bracket (10), and the lifting pump (12) is fixed on the cross beams (11).

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