Stable supporting platform for sucker rod pressure wellhead device

Abstract

The utility model belongs to the technical field of petroleum drilling operation, and discloses a stable supporting platform for a sucker rod wellhead device under pressure, which comprises a stand column and a working platform. The number of the stand columns is more than four, the stand columns are connected through connecting plates, a working platform is arranged on the tops of the stand columns, a driller station is arranged on the working platform, and a hydraulic control and display device of the sucker rod pressure wellhead device is connected to the driller station. A bearing platform is arranged on the connecting plate located on the upper middle portion of the stand column, an upper fixing cross beam of the sucker rod pressurized wellhead device is detachably locked on the bearing platform, hoops are installed on a lifting cylinder body of the sucker rod pressurized wellhead device and the stand column of the stability supporting platform, and the hoops are connected through pull rods or lead screws. The sucker rod pressure wellhead device is stable in structure, stability and safety of the sucker rod pressure wellhead device during operation are improved, and an annular blowout preventer, a blowout prevention telescopic pipe and a slip can be effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling operation technology, and in particular to a stability support platform for a pressurized wellhead device for sucker rods, which can improve the stability and safety of the pressurized wellhead device during operation. Background Technology

[0002] Currently, for some oil wells with a certain pressure, such as those with oil-water cross-contamination requiring water shut-off, there are generally two operational measures used during pump inspection: First, direct venting until depressurization before pump inspection. Second, well control first, followed by pump inspection. Direct venting not only causes a drop in formation pressure, affecting future oil production, but also poses a series of safety hazards such as fire, surface pollution, and toxic gas injuries. While the second well control measure avoids venting, a blowout is still possible if the kill fluid's specific gravity is too low. If the kill fluid's specific gravity is too high, the mud will seep into the formation, polluting it and also affecting future oil production. Even with a suitable specific gravity, the mud must be replaced with clean water after pump inspection, a process known as well washing, which is costly and complex. With increasingly stringent environmental protection requirements, oilfield maintenance personnel hope that pump inspections of such wells can be conducted without venting or well control.

[0003] Chinese invention patent CN 106437558B discloses an integrated machine for live tubing and sucker rod installation, capable of both live tubing installation and live sucker rod operation. Component replacement requires neither wellhead movement nor lifting equipment, allowing for easy on-site operation by the operator.

[0004] As per the instruction manual Figure 1 As shown, this type of sucker rod pressurized wellhead assembly is equipped with multiple blowout preventers, slips, and a lifting cylinder, with an overall height of approximately 4.6 meters. However, the diameter at the location where the sucker rod is installed is only about 70mm, making the entire assembly slender and elongated. This assembly is prone to swaying during pressurized tubing or sucker rod operations. Currently, steel wire ropes are commonly used for traction and stability at engineering sites, but the effect is not ideal. During operation, vibration or external forces may cause structural instability, leading to component displacement, loose connections, or even equipment damage. Furthermore, the swaying of the assembly increases the safety risks for operators, especially under high pressure, potentially causing liquid or gas leaks and leading to serious accidents. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] The purpose of this invention is to overcome the problems of large length-to-diameter ratio, insufficient operational safety, and uncontrollability of existing sucker rod pressurized wellhead devices, and to provide a stable support platform for sucker rod pressurized wellhead devices. The platform has a stable structure and can vertically lock the fixed crossbeam on the sucker rod pressurized wellhead device and fix the lifting cylinder body.

[0007] To solve the above technical problems, the present invention provides a stability support platform for a pressurized wellhead device for sucker rods, comprising:

[0008] The column consists of four or more columns, which are connected by connecting plates.

[0009] The working platform is set on top of the column. The working platform is equipped with a driller's table. The hydraulic control and display device of the sucker rod with pressure wellhead device is connected to the driller's table.

[0010] The support platform is located above the connecting plate in the upper middle part of the column, and the upper fixed crossbeam of the sucker rod with pressure wellhead device can be detachably locked on the support platform;

[0011] The clamps are installed on the lifting cylinder body of the sucker rod pressurized wellhead device and the column of the stability support platform, respectively, and are connected to each other by tie rods or screws.

[0012] Furthermore, the work platform is equipped with guardrails on all four sides, and the bottom of the work platform consists of multiple welded strips spliced ​​together to form a flat surface on the top of the column. A steel plate is installed on the upper part of the strips, and the steel plate is provided with drainage holes and anti-slip texture on the upper surface of the steel plate.

[0013] Furthermore, the bottom of the column is equipped with an adjustable foot, which can be adjusted in height by screwing to facilitate the leveling of the four columns and the work platform.

[0014] Furthermore, the side of the work platform is provided with a ladder extending to the ground.

[0015] Furthermore, the column is fitted with a lead screw, and the other end of the lead screw is locked to the clamp of the lifting cylinder body by a nut.

[0016] Furthermore, the upper fixed crossbeam is installed on the support platform by four U-shaped buckles. The U-shaped buckles pass through the mounting holes on the support platform and the upper fixed crossbeam and are locked by nuts.

[0017] Compared with the prior art, the present invention has achieved the following beneficial effects: 1. The stability support platform for the wellhead device with pressure on the sucker rod described in the present invention allows the workers to work on the top of the platform, making it easier to monitor the situation of tubing or sucker rod tripping.

[0018] 2. This utility model can stabilize the pressurized wellhead device for sucker rods, reduce or avoid shaking during operation, improve safety, ensure smooth operation, and make the operation of running tubing and sucker rods more controllable.

[0019] 3. This utility model can be used as an optional device for pressurized wellhead devices for sucker rods, and can be used in conjunction with various existing pressurized wellhead devices for sucker rods, making it widely adaptable;

[0020] 4. This utility model can be transported, disassembled and installed simultaneously with the sucker rod pressurized wellhead device, and can play a protective role for the sucker rod pressurized wellhead device, preventing damage to the annular blowout preventer, blowout preventer telescopic tube and slips of the sucker rod pressurized wellhead device during disassembly and transportation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein:

[0022] Figure 1 A cross-sectional schematic diagram of the pressurized wellhead assembly for sucker rods;

[0023] Figure 2 A partial cross-sectional schematic diagram of the stability support platform;

[0024] Figure 3 A top-view schematic diagram of the stability support platform;

[0025] In the diagram: 1. Upper fixed crossbeam; 2. Lifting cylinder body; 3. Clamp; 4. Lead screw; 5. Adjustable foot; 6. Column; 7. U-shaped buckle; 8. Drilling platform; 9. Support platform; 10. Working platform; 11. Slat; 12. Drain hole; 13. Connecting plate. Detailed Implementation

[0026] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0028] like Figures 1 to 3 As shown, this utility model relates to a stability support platform for a sucker rod pressurized wellhead device, comprising an upper fixed crossbeam 1, a lifting cylinder body 2, adjusting feet 5, columns 6, a support platform 9, and a working platform 10. There are four or more columns 6, each with adjusting feet 5 installed at its bottom. The height of the adjusting feet 5 can be adjusted by screwing them on, facilitating the leveling of the four columns 6 and the working platform 10. Connecting plates 13 connect the columns 6, and the working platform 10 is located at the top of each column 6. The connecting plate 13, located in the upper part of the columns 6, has a support platform 9. The upper fixed crossbeam 1 of the sucker rod pressurized wellhead device is detachably locked to the support platform 9. The upper fixed crossbeam 1 is installed on the support platform 9 using four U-shaped clips 7. The U-shaped clips 7 pass through mounting holes on the support platform 9 and the upper fixed crossbeam 1 and are locked with nuts.

[0029] The working platform 10 is equipped with a driller's platform 8. The hydraulic control and display device for the sucker rod with wellhead pressure device is connected to the driller's platform 8 for centralized operation and monitoring by the operators. The working platform 10 is surrounded by guardrails to prevent operators from falling. Its bottom consists of multiple welded slats 11 spliced ​​together to form a flat surface, which is supported on top of the columns 6. Steel plates are laid on the slats 11, with drainage holes 12 and anti-slip textures on the upper surface. Furthermore, a ladder extending to the ground is provided on the side of the working platform 10, facilitating operators to climb onto the platform for work.

[0030] Both the lifting cylinder body 2 of the sucker rod with pressure wellhead device and the column 6 of the stability support platform are equipped with clamps 3, which are connected to each other by tie rods or lead screws 4. Specifically, the clamps 3 on the column 6 are welded with lead screws 4, and the other end of the lead screw 4 is locked to the clamps 3 of the lifting cylinder body 2 by a nut, thereby achieving a stable fixation of the lifting cylinder body 2.

[0031] In actual operation, the wellhead tree is removed, and a crane is used to lift the integrated device of the sucker rod pressurized wellhead device and this stability support platform to the wellhead position. Then, the sucker rod with a length exceeding the overall height of this utility model is passed through the central through hole of this utility model to bring out the sucker rod at the wellhead.

[0032] When the pressurized wellhead device is in operation, if the downhole pressure is insufficient to push the sucker rod upwards, the large crane on the workover rig can be used directly to lift the rod, thus improving operational efficiency. However, when the downhole pressure causes the sucker rod to tend to move upwards, the lifting cylinder in this device must be used to lift the rod, while the large crane of the workover rig is used in conjunction with a lifting clamp to straighten the sucker rod. During the rod lifting process, the pressurized wellhead device effectively prevents crude oil from overflowing from the wellhead, avoiding well site contamination.

[0033] This stability support platform securely fixes the upper fixed crossbeam 1 of the sucker rod pressurized wellhead device to the platform's support 9 using U-shaped buckles 7, and further secures the two columns 6 of the sucker rod pressurized wellhead device with clamps 3 and screw rods 4 or tie rods. When the moving crossbeam of the sucker rod pressurized wellhead device is in operation, the upper fixed crossbeam 1 and columns 6, as the main load-bearing components, transmit the force to the support platform. This invention thus provides excellent support for the sucker rod pressurized wellhead device, preventing it from swaying, ensuring smooth operation, and preventing tipping accidents in extreme cases. During operation, operators can climb to the top of the working platform 10 via a ladder to perform related operations. The platform 10 has anti-slip textures and drainage holes 12 to ensure operator safety and ease of operation. Simultaneously, the hydraulic control operating platform for key components such as the blowout preventer, clamping device, and lifting cylinder, as well as related pressure monitoring gauges, are all installed on the driller's platform 8, enabling unified control and improving the controllability and accuracy of the operation. During installation, dismantling, and transportation, the sucker rod pressurized wellhead device can be steadily lifted by the suspension stability support platform, using the bearing platform 9 and clamp 3, which facilitates the overall movement and transfer.

[0034] In summary, during the operation of the sucker rod pressurized wellhead assembly, the assembly must withstand certain pressure and vibration. A stable working platform 10 significantly reduces the swaying of the wellhead assembly caused by vibration or external impacts during operation, thus ensuring stable equipment operation. Reducing wellhead assembly sway is crucial for preventing safety accidents caused by equipment instability, especially when operating in high-pressure or hazardous environments, effectively lowering the risk of equipment damage or personnel injury due to instability. Furthermore, a stable wellhead assembly allows for more precise control of the sucker rod's vertical movement, reducing component wear caused by mechanical friction or irregular operation, thereby extending equipment lifespan and improving overall operational efficiency.

[0035] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A stability support platform for a sucker rod ram wellhead assembly, comprising: include: The column (6) has four or more columns, and the columns (6) are connected by connecting plates (13); The working platform (10) is set on the top of the column (6). The working platform (10) is equipped with a driller's platform (8). The hydraulic control and display device of the sucker rod with pressure wellhead device is connected to the driller's platform (8). The base (9) is located above the connecting plate (13) in the upper part of the column (6), and the upper fixed crossbeam (1) of the sucker rod pressure wellhead device is detachably locked on the base (9); The clamps (3) are respectively installed on the lifting cylinder body (2) of the sucker rod pressurized wellhead device and the column (6) of the stability support platform. The clamps (3) are connected by tie rods or screws (4).

2. The stability support platform for sucker rod ram blowout preventer assembly as claimed in claim 1 wherein: The work platform (10) is equipped with guardrails on all four sides. The bottom of the work platform (10) consists of multiple welded strips (11). The strips (11) are spliced ​​together to form a plane and set on the top of the column (6). A steel plate is set on the upper part of the strips (11). The steel plate is equipped with drainage holes (12) and anti-slip texture is provided on the upper surface of the steel plate.

3. The stability support platform for sucker rod ram blowout preventer assembly as claimed in claim 1 wherein: The bottom of the column (6) is equipped with an adjustable foot (5). The height of the adjustable foot (5) can be adjusted by turning it, which makes it easy to adjust the level of the four columns (6) and the work platform (10).

4. The stability support platform for sucker rod ram blowout preventer assembly of claim 1, wherein, The working platform (10) is provided with a ladder extending to the ground on its side.

5. The stability support platform for sucker rod ram blowout preventer assembly of claim 1, wherein, The clamp (3) on the column (6) is welded with a lead screw (4), and the other end of the lead screw (4) is locked to the clamp (3) of the lifting cylinder body (2) by a nut.

6. The stability support platform for sucker rod ram blowout preventer assembly of claim 1, wherein, The upper fixed crossbeam (1) is installed on the support platform (9) by four U-shaped buckles (7). The U-shaped buckles (7) pass through the mounting holes on the support platform (9) and the upper fixed crossbeam (1) and are locked by nuts.

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