Hoisting-free hydraulic control pry for wellhead installation of coiled tubing injection head

Abstract

The utility model relates to the technical field of oil field coiled tubing operation construction equipment, and particularly discloses a hoisting-free hydraulic control pry for wellhead installation of a coiled tubing injection head, which comprises a lower base and an injection head positioning mechanism, a longitudinal moving mechanism is installed on the lower base, and the longitudinal moving mechanism is provided with a longitudinal sliding seat and a longitudinal hydraulic cylinder. The longitudinal hydraulic cylinder drives the longitudinal sliding seat to move, the lifting turnover mechanism is installed on the longitudinal sliding seat and provided with a lifting hydraulic cylinder and a swing hydraulic cylinder, the bottom of the lifting hydraulic cylinder and the bottom of the swing hydraulic cylinder are installed on the longitudinal sliding seat, and the top of the lifting hydraulic cylinder and the top of the swing hydraulic cylinder are connected with the injection head positioning mechanism. The injection head positioning mechanism is provided with an injection head positioning frame, and an injection head is placed on the injection head positioning frame; wellhead installation and construction operation of the coiled tubing injection head are achieved, a crane is not needed, safety and reliability are achieved, construction cost is saved, construction efficiency is greatly improved, wellhead assembly and construction are achieved without hoisting, applicability is high, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of coiled tubing operation construction equipment in oil fields, and particularly relates to a hydraulic control skid for installing a coiled tubing injector head at the wellhead without hoisting. Background Art

[0002] With the continuous development of oil field development, coiled tubing operations are increasingly applied in oil fields due to their advantages such as short operation cycles and the ability to trip the tubing string under pressure. However, in traditional coiled tubing operation construction, a crane is required to participate in the entire operation process. Frequent and long-term hoisting operations have always been a relatively serious safety hazard in coiled tubing operations. Hoisting operations not only pose safety problems but also reduce the construction efficiency of coiled tubing, increase the construction cost of coiled tubing, and affect the benefits of coiled tubing construction. Therefore, a control device that can achieve wellhead installation without hoisting and continuously support the coiled tubing wellhead equipment during construction is needed.

[0003] Existing coiled tubing operations without hoisting mainly rely on vehicle-mounted integrated equipment, and there is less research on skid-mounted equipment. Due to the large number of moving parts required for hoist-free operations and the large load-bearing of the moving parts, the hoist-free operation platform generally has a large tonnage, which leads to the vehicle-mounted integrated equipment having too large a tonnage, facing the risk of vehicle overloading, or being unable to load a sufficiently long coiled tubing, restricting the operation depth of coiled tubing. Moreover, most of the existing integrated equipment has redundant and complex structures, poor lifting balance, and too many practical application limitations.

[0004] Therefore, there is an urgent need to design a hydraulic control skid for installing a coiled tubing injector head at the wellhead without hoisting to solve the problems of complex structure and poor lifting balance of existing hoisting equipment. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a hydraulic control skid for installing a coiled tubing injector head at the wellhead without hoisting.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a hydraulic control skid for installing a coiled tubing injector head at the wellhead without hoisting, including a lower base and an injector head positioning mechanism. A longitudinal movement mechanism is installed on the lower base. The longitudinal movement mechanism is provided with a longitudinal sliding seat and a longitudinal hydraulic cylinder, and the longitudinal hydraulic cylinder drives the longitudinal sliding seat to move. A lifting and flipping mechanism is installed on the longitudinal sliding seat. The lifting and flipping mechanism is provided with a lifting hydraulic cylinder and a swinging hydraulic cylinder. The bottoms of the lifting hydraulic cylinder and the swinging hydraulic cylinder are installed on the longitudinal sliding seat, and the tops of the lifting hydraulic cylinder and the swinging hydraulic cylinder are connected to the injector head positioning mechanism. The injector head positioning mechanism is provided with an injector head positioning frame, and the injector head is placed on the injector head positioning frame.

[0007] Specifically, the lower base is provided with a frame, two groups of fixing blocks are oppositely installed on the frame, a plurality of fixing ears are provided on both sides of the frame, and the lower base is installed on the chassis truck through the fixing ears.

[0008] Specifically, the longitudinal movement mechanism is further provided with a longitudinal pulley and a longitudinal slide rail. Two groups of longitudinal slide rails are installed on the fixing blocks. The longitudinal pulley is slidably connected to the longitudinal slide rail, and the longitudinal pulley is fixedly connected to the bottom of the longitudinal slide seat.

[0009] Specifically, the bottom of the longitudinal hydraulic cylinder is installed on the frame. The end of the cylinder rod of the longitudinal hydraulic cylinder is connected to the bottom of the longitudinal slide seat through a bracket, and the longitudinal hydraulic cylinder drives the longitudinal slide seat to move along the longitudinal slide rail.

[0010] Specifically, the injection head positioning mechanism is provided with a mounting frame. There are two cross beams, one above the other, on one side of the mounting frame. An injection head positioning frame is sleeved on the two cross beams together. Four injection head positioning pins are installed on the injection head positioning frame. The injection head positioning pins are inserted into the mounting holes of the injection head, and the injection head positioning pins face the inside of the mounting frame.

[0011] Specifically, a transverse hydraulic cylinder is installed on the mounting frame at one end of the cross beam. The cylinder rod of the transverse hydraulic cylinder is connected to the outside of the injection head positioning frame, and the transverse hydraulic cylinder adjusts the transverse position of the injection head positioning frame on the mounting frame.

[0012] Specifically, the bottom of the lifting hydraulic cylinder is fixedly installed on the longitudinal slide seat. The top of the cylinder rod of the lifting hydraulic cylinder is rotationally connected to one side of the bottom of the mounting frame through a pin shaft.

[0013] Specifically, the bottom of the swing hydraulic cylinder is rotationally installed on the longitudinal slide seat through a pin shaft. The top of the cylinder rod of the swing hydraulic cylinder is rotationally connected to the bottom of the mounting frame through a pin shaft.

[0014] The utility model has the following beneficial effects:

[0015] The hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting designed by the utility model realizes the installation and construction operation of the coiled tubing injector head at the wellhead. It does not require a crane, is safe and reliable, and saves construction costs.

[0016] The hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting designed by the utility model realizes operations such as not guiding and threading the pipe on-site and not connecting the hydraulic control pipeline, greatly improving the construction efficiency.

[0017] The hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting designed by the utility model can be combined with the existing skid-mounted coiled tubing equipment to realize the assembly and construction at the wellhead without hoisting, and has strong applicability.

[0018] The hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting designed by the utility model optimizes the hydraulic control design for the coiled tubing injector head to rise and align, making its structure stable and safe.

[0019] The hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting designed by the utility model adopts a skid-mounted structure, enabling the selection of an appropriate transportation method according to the construction conditions of the equipment and solving the problem of overloading. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting.

[0021] Figure 2 It is a front view of the hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting in the non-lifted state.

[0022] Figure 3 It is a front view of the hydraulic control skid for installing the coiled tubing injector head at the wellhead without hoisting in the lifted state.

[0023] Figure 4 It is a schematic diagram of the structure of the lower base.

[0024] Figure 5 It is a schematic diagram of the structure of the longitudinal pulley.

[0025] Figure 6 It is a schematic diagram of the structure of the injector head positioning mechanism.

[0026] As shown in the figure: 1 - longitudinal moving mechanism, 1.1 - longitudinal pulley, 1.2 - longitudinal hydraulic cylinder, 1.3 - longitudinal sliding seat, 1.4 - longitudinal slide rail;

[0027] 2 - lifting and flipping mechanism, 2.1 - lifting hydraulic cylinder, 2.2 - swing hydraulic cylinder;

[0028] 3 - injector head positioning mechanism, 3.1 - injector head positioning frame, 3.2 - injector head positioning pin, 3.3 - cross beam, 3.4 - transverse hydraulic cylinder; 4 - lower base, 4.1 - frame, 4.2 - fixed ear, 4.3 - fixed block. Detailed Embodiment

[0029] Hereinafter, the technical solutions in the embodiments of the present utility model will be further described clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Such as Figures 1-6As shown in the figure, a hydraulic control skid for wellhead installation of a coiled tubing injector head without hoisting includes a lower base 4. A longitudinal movement mechanism 1, a lifting and flipping mechanism 2, and an injector head positioning mechanism 3 are installed on the lower base 4. The lower base 4 is provided with a frame 4.1, fixing lugs 4.2, and fixing blocks 4.3. Two groups of fixing blocks 4.3 are oppositely installed on the frame 4.1, and a plurality of fixing lugs 4.2 are provided on both sides of the frame 4.1. The lower base 4 is installed on the chassis vehicle through the fixing lugs 4.2.

[0031] The longitudinal movement mechanism 1 is installed on the lower base 4. The longitudinal movement mechanism 1 is provided with a longitudinal pulley 1.1, a longitudinal hydraulic cylinder 1.2, a longitudinal sliding seat 1.3, and a longitudinal sliding rail 1.4. The longitudinal hydraulic cylinder 1.2 drives the longitudinal sliding seat 1.3 to move.

[0032] Two groups of longitudinal sliding rails 1.4 are installed on the fixing blocks 4.3. The longitudinal pulley 1.1 is slidably connected to the longitudinal sliding rail 1.4. The longitudinal pulley 1.1 is fixedly connected to the bottom of the longitudinal sliding seat 1.3. The longitudinal sliding rail 1.4 adopts the structural form of a smooth shaft. The longitudinal pulley 1.1 includes rollers at the lower part, a sliding sleeve in the middle, and a mounting plate at the upper part. The mounting plate is fixedly connected to the bottom of the longitudinal sliding seat 1.3. The sliding sleeve is slidably connected to the smooth shaft, and the rollers roll on the frame 4.1 of the lower base 4.

[0033] The bottom of the longitudinal hydraulic cylinder 1.2 is installed on the frame 4.1. The end of the cylinder rod of the longitudinal hydraulic cylinder 1.2 is connected to the bottom of the longitudinal sliding seat 1.3 through a bracket. The longitudinal hydraulic cylinder 1.2 drives the longitudinal sliding seat 1.3 to move along the longitudinal sliding rail 1.4.

[0034] The lifting and flipping mechanism 2 is installed on the longitudinal sliding seat 1.3. The lifting and flipping mechanism 2 is provided with a lifting hydraulic cylinder 2.1 and a swing hydraulic cylinder 2.2. The bottoms of the lifting hydraulic cylinder 2.1 and the swing hydraulic cylinder 2.2 are installed on the longitudinal sliding seat 1.3. The tops of the lifting hydraulic cylinder 2.1 and the swing hydraulic cylinder 2.2 are connected to the injector head positioning mechanism 3.

[0035] The bottom of the lifting hydraulic cylinder 2.1 is fixedly installed on the longitudinal sliding seat 1.3. The top of the cylinder rod of the lifting hydraulic cylinder 2.1 is rotationally connected to one side of the bottom of the mounting frame through a pin shaft.

[0036] The bottom of the swing hydraulic cylinder 2.2 is rotationally installed on the longitudinal sliding seat 1.3 through a pin shaft. The top of the cylinder rod of the swing hydraulic cylinder 2.2 is rotationally connected to the bottom of the mounting frame through a pin shaft.

[0037] The injector head positioning mechanism 3 is provided with an injector head positioning frame 3.1, an injector head positioning pin 3.2, a cross beam 3.3, and a transverse hydraulic cylinder 3.4. The injector head is placed on the injector head positioning frame 3.1.

[0038] The injection head positioning mechanism is also provided with a mounting frame. On one side of the mounting frame, there are two cross beams 3.3, upper and lower. A common injection head positioning frame 3.1 is sleeved on the two cross beams 3.3. Four injection head positioning pins 3.3 are installed on the injection head positioning frame 3.1. The injection head positioning pins 3.2 are inserted into the mounting holes of the injection head, and the injection head positioning pins 3.2 face the inside of the mounting frame.

[0039] On the mounting frame and at one end of the cross beam 3.3, a transverse hydraulic cylinder 3.4 is installed. The cylinder rod of the transverse hydraulic cylinder 3.4 is connected to the outside of the injection head positioning frame 3.1. The transverse hydraulic cylinder 3.4 adjusts the transverse position of the injection head positioning frame 3.1 on the mounting frame.

[0040] The working principle of the present utility model:

[0041] The longitudinal slide of the lower movable platform 1.3 cooperates with the longitudinal slide rail 1.4 installed on the lower base 4, enabling the lower movable platform to move longitudinally on the lower base 4. The two ends of the longitudinal hydraulic cylinder 1.2 are respectively connected to the lower base 4 and the longitudinal slide of the lower movable platform 1.3, providing power for controlling the longitudinal movement of the lower movable platform of the control pry.

[0042] The lifting hydraulic cylinder 2.1 and the swing hydraulic cylinder 2.2 are both located on the longitudinal slide 1.3. The lifting hydraulic cylinder 2.1 is mainly responsible for the rising action of the injection head, and the swing hydraulic cylinder 2.2 is mainly responsible for the swinging action of the injection head. The two hydraulic cylinders cooperate to complete the tasks of rising and aligning the injection head.

[0043] The mounting frame of the injection head positioning mechanism is combined and connected with the lifting hydraulic cylinder 2.1. Through the combined actions of the lifting hydraulic cylinder 2.1 and the swing hydraulic cylinder 2.2, the rising and alignment of the injection head are achieved. The transverse slide rail (cross beam 3.3) is connected to the mounting frame. The injection head positioning frame directly loads the injection head, and the longitudinal movement of the injection head is achieved through the longitudinal hydraulic cylinder 1.4.

[0044] The present utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, all fall within the protection scope of the present utility model.

[0045] The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

[0046] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic control skid for installing a coiled tubing injection head at a wellhead without hoisting, characterized in that: It includes a lower base and an injection head positioning mechanism, wherein a longitudinal moving mechanism is installed on the lower base, the longitudinal moving mechanism is provided with a longitudinal slide and a longitudinal hydraulic cylinder, the longitudinal hydraulic cylinder drives the longitudinal slide to move, a lifting and flipping mechanism is installed on the longitudinal slide, the lifting and flipping mechanism is provided with a lifting hydraulic cylinder and a swinging hydraulic cylinder, the bottoms of the lifting hydraulic cylinder and the swinging hydraulic cylinder are installed on the longitudinal slide, the tops of the lifting hydraulic cylinder and the swinging hydraulic cylinder are connected to the injection head positioning mechanism, the injection head positioning mechanism is provided with an injection head positioning frame, and the injection head is placed on the injection head positioning frame.

2. The hydraulic control skid for installing a coiled tubing injection head at the wellhead without hoisting according to claim 1 is characterized in that: The lower base is provided with a frame, on which two groups of fixing blocks are relatively installed, and two sides of the frame are provided with a plurality of fixing ears, through which the lower base is installed on the chassis vehicle.

3. The hydraulic control skid for installing a coiled tubing injection head at the wellhead without hoisting according to claim 2 is characterized in that: The longitudinal moving mechanism is also provided with a longitudinal pulley and a longitudinal slide rail. The longitudinal slide rail is provided with two groups mounted on the fixed block. The longitudinal slide rail is slidably connected to the longitudinal pulley, and the longitudinal pulley is fixedly connected to the bottom of the longitudinal slide seat.

4. The hoist-free hydraulic control skid for the coiled tubing injection head wellhead installation according to claim 3 is characterized in that: The bottom of the longitudinal hydraulic cylinder is installed on the frame, the cylinder rod end of the longitudinal hydraulic cylinder is connected to the bottom of the longitudinal slide seat through a bracket, and the longitudinal hydraulic cylinder drives the longitudinal slide seat to move along the longitudinal slide rail.

5. The hydraulic control skid for installing a coiled tubing injection head at a wellhead without hoisting according to claim 1 is characterized in that: The injection head positioning mechanism is provided with a mounting frame, one side of the mounting frame is provided with two upper and lower beams, the two beams are jointly sleeved with an injection head positioning frame, the injection head positioning frame is installed with four injection head positioning pins, the injection head positioning pins are inserted into the mounting holes of the injection head, and the injection head positioning pins face the inside of the mounting frame.

6. The hoist-free hydraulic control skid for the coiled tubing injection head wellhead installation according to claim 5 is characterized in that: A transverse hydraulic cylinder is installed on the mounting frame and at one end of the crossbeam, the cylinder rod of the transverse hydraulic cylinder is connected to the outer side of the injection head positioning frame, and the transverse hydraulic cylinder adjusts the transverse position of the injection head positioning frame on the mounting frame.

7. The hydraulic control skid for installing a coiled tubing injection head at a wellhead without hoisting according to claim 5 is characterized in that: The bottom of the lifting hydraulic cylinder is fixedly installed on the longitudinal slide seat, and the top of the cylinder rod of the lifting hydraulic cylinder is rotatably connected to one side of the bottom of the mounting frame through a pin shaft.

8. The hoist-free hydraulic control skid for coiled tubing injection head wellhead installation according to claim 1 is characterized in that: The bottom of the swing hydraulic cylinder is rotatably mounted on the longitudinal slide seat through a pin shaft, and the top of the cylinder rod of the swing hydraulic cylinder is rotatably connected to the bottom of the mounting frame through a pin shaft.

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