Integrated quick dismounting and mounting drilling and repairing machine base

Abstract

The utility model discloses an integrated quick dismounting and mounting drilling and repairing machine base, and the base can be loaded on a flatbed transport vehicle to be transported on the road through two-stage folding and hinged transport design, comprising: bottom assembly, top assembly, front stand, rear stand, widened platform, side support, left support, right support, base lifting cylinder and pre-lifting cylinder, etc, the front stand, rear stand, bottom assembly and top assembly jointly constitute a parallelogram folding mechanism, and the base lifting cylinder and pre-lifting cylinder realize two-stage folding between the bottom assembly and the top assembly. The utility model discloses two-stage folding structure and hinged transport design through parallelogram, realize base and accessory one car integral transport, reduce dismounting and mounting work. The two-stage folding mechanism significantly reduces the transport height, and there is no high-altitude operation, guarantees the safe and stable lifting, satisfies the road transport standard, improves the relocation efficiency, reduces the operation cost and the effect of safety risk.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and workover equipment technology. More specifically, this utility model relates to an integrated, quick-installation and disassembly base for a drilling and workover machine. Background Technology

[0002] Drilling workover rig bases are key pieces of equipment in oil drilling and production operations, used to house the derrick, rotary table, blowout preventer assembly, and provide a drilling platform. Their performance directly affects the efficiency and safety of drilling and workover operations. Currently, common drilling workover rig bases mainly adopt structures such as rotary type, telescopic type, and modular assembly type.

[0003] Specifically, the jacking structure base requires assembling modules such as the bottom assembly, top assembly, and intermediate column at the well site, and then using hydraulic cylinders or wire ropes to jack it up to the working position. This process involves a large amount of disassembly and assembly work, requires multiple hoisting devices, is time-consuming, and involves many transport vehicles. While the telescopic structure base can reduce the number of transport vehicles, its sleeve telescopic structure limits the overall height of the base, resulting in insufficient stability and making it difficult to meet the requirements of operating scenarios with high wellhead height requirements, thus narrowing its application scope. The block-assembled structure is composed of multiple stacked modules, and the connection and fixing between the modules requires a lot of high-altitude work, which is not only inefficient but also poses a high risk to personnel safety.

[0004] In addition, some existing improved designs, such as the self-propelled transportation scheme that changes the connection position between the tires and the base to achieve equipment mobility (such as CN202411449467A), can reduce some disassembly and assembly, but their "vertical transportation" method cannot meet the strict restrictions on vehicle dimensions (especially height and width) of conventional road transportation. They are mainly suitable for specific areas with open terrain (such as deserts) and have poor applicability in my country and most areas with strict road regulations.

[0005] Therefore, existing drilling rig bases generally suffer from the following common problems: large workload and long time consumption during relocation and installation; multiple transportation modules and high vehicle frequency, resulting in poor economic efficiency; frequent high-altitude operations, leading to significant safety risks; and difficulty in meeting the operational requirements of high bases while complying with road transport regulations. This has become one of the bottlenecks restricting the low-cost and high-efficiency development of oil and gas resources. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated, quick-assembly and disassembly drilling rig base, aiming to solve the technical problems of existing drilling rig bases, which suffer from multiple transport trips, large installation workload, and long time consumption due to modular disassembly and assembly. Through a parallelogram folding structure and integrated transport design, the base and accessories can be transported as a whole in a single trip. Furthermore, by utilizing a two-stage lifting mechanism, the transport height is significantly reduced while ensuring safe and stable lifting, meeting highway transport standards, ultimately improving relocation efficiency and reducing operating costs and safety risks.

[0007] The technical solution adopted by this utility model to solve this technical problem is: an integrated quick-installation and disassembly drilling and repair machine base, wherein the base can be loaded as a whole structure on a flatbed transport vehicle for road transport in the transport state, including: Bottom assembly; Top assembly; The front column and the rear column, together with the bottom assembly and the top assembly, constitute a parallelogram folding mechanism; The base lifting cylinder and the pre-lifting cylinder are connected between the bottom assembly and the top assembly; Side supports, folded inside the front and rear columns; The left and right supports are folded down on both sides of the bottom assembly; In the transportation state, the parallelogram folding mechanism is in a folded state, so that the top assembly is close to the bottom assembly in the height direction, the side support, left support and right support are in a folded state, and the overall dimensions of the base meet the height and width restrictions for road transportation.

[0008] As a further embodiment of this utility model, the lower end of the pre-lifting cylinder is hinged to the bottom assembly, and the upper end is configured to slidably engage with the arc plate fixed to the top assembly, so as to lift the top assembly to a set height before the lifting action of the base lifting cylinder is performed.

[0009] As a further embodiment of this utility model, the top assembly is hinged to a widening platform on its side. The widening platform folds upward in the transport state to reduce the width and unfolds outward in the working state to provide an operating platform.

[0010] As a further embodiment of this utility model, the side supports are multiple, and the side supports are folded inward or outward in the transportation state to be stored in the side or inside of the front column and / or rear column, thereby avoiding excessive width and providing overall structural stability of the base in the left and right directions in the working state.

[0011] As a further embodiment of this utility model, a left support and a right support are respectively provided on both sides of the bottom assembly. The left support and the right support are connected to the bottom assembly through a multi-pin structure, and have an unfolded working position and an upwardly folded transport position. In the working state, the lower end of the side support is connected to the unfolded left support and / or right support.

[0012] A further embodiment of this utility model is: it also includes a rear support, which is a telescopic structure. In the transportation state, it is retracted to its shortest length and locked with a pin; in the working state, it is extended to its longest length and locked with a pin to provide overall structural stability of the base in the front-rear direction. Its lower end is provided with a roller and contacts the ground, and its upper end is connected to the top assembly.

[0013] As a further embodiment of this utility model, the bottom assembly integrates a derrick lifting cylinder and an adjusting cylinder for adjusting its angle. In the transportation state, the derrick lifting cylinder and the adjusting cylinder remain integrally connected to the base and do not need to be disassembled.

[0014] As a further embodiment of this utility model, a blowout preventer transport skid fixing seat is provided on the left support for guiding and receiving the movement of the blowout preventer transport skid toward the wellhead. The top assembly integrates a mechanism for attaching the driller's cabin.

[0015] This utility model has at least the following beneficial effects: 1. Extremely high transportation efficiency and significant economic benefits. By designing the base as a parallelogram folding structure, and ensuring that accessories such as the widened platform, left / right supports, and side supports are all folded, a high degree of integration and compactness of the base is achieved during transportation. This allows the entire base and most of its components to be transported as a single unit in a single trip. Compared to existing technologies that require disassembling multiple modules and transporting in multiple trips, this significantly reduces the number of transport vehicles and substantially lowers transportation costs and well site relocation expenses.

[0016] 2. Installation and disassembly workload is significantly reduced, and the operation cycle is shortened. Since the base does not require disassembly of the main structure (such as the column and lifting cylinder) during transportation, and no tedious reassembly is needed upon arrival at the well site, installation only requires unfolding the support, widening platform, and bracing to perform the lifting operation. This process eliminates a large amount of bolting, hoisting, and assembly work, reducing the traditional installation time of several days to several hours, significantly improving the efficiency of well team relocation.

[0017] 3. The lifting process is safe, stable, and highly reliable. The innovative two-stage lifting system (pre-lifting cylinder + base lifting cylinder) is one of the core advantages of this invention. The pre-lifting cylinder, by pushing the arc plate, first smoothly lifts the massive top assembly to a safe height. This process involves gentle and controllable force application, effectively eliminating the impact and risks that may exist when the base lifting cylinder is directly activated. This step-by-step lifting mechanism greatly enhances the safety and stability of the lifting process for tall bases, reducing the probability of equipment failure and safety accidents.

[0018] 4. Optimized structural design to meet both transportation restrictions and operational needs. This invention is not simply about "making it smaller," but rather about dynamically adapting to different scenarios through a smart design that combines "folding" and "extension." During transportation, it folds as a whole to meet strict highway height and width restrictions; during operation, it unfolds completely, providing ample working height and a stable operating platform. This design perfectly resolves the contradiction between a high base and demanding transportation conditions, expanding the applicable geographical area of ​​the drilling rig.

[0019] 5. High degree of integration reduces high-altitude work and improves safety. The driller's cabin attachment mechanism, blowout preventer transport skid mounting base, and other accessories are integrated into the main base, achieving functional modularity. Blowout preventer installation and other operations can be completed on the base platform, assisted by rollers and a tilting arm, reducing the risks associated with frequent crane use and high-altitude work in traditional operations, fundamentally improving operational safety.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a front view of the drilling machine base of this utility model in its transportation state; Figure 2 This is a side view of the drilling and repair machine base in its transport state. Figure 3 This is a front view of the drilling machine base of this utility model at a low position; Figure 4 This is a side view of the drilling machine base of this utility model at a low position; Figure 5 This is a side view of the pre-lifting state of the drilling machine base of this utility model; Figure 6 This is a front view of the drilling machine base of this utility model in its working state; Figure 7 This is a side view of the drilling machine base of this utility model in its working state; Figure 8 This is a schematic diagram of the mounting base for the blowout preventer transport skid of this utility model; Figure 9 This is a schematic diagram of the transport skid for installing the blowout preventer according to this utility model; Figure 10 This is a schematic diagram of the blowout preventer of this utility model rotating. Figure 11 This is a schematic diagram of the device for hoisting the blowout preventer to the wellhead according to this utility model; Figure 12 This is a schematic diagram of the transport skid of the blowout preventer of this utility model in its transport state; Figure 13This is a schematic diagram of the transport skid of the blowout preventer of this utility model in the flipped state; Figure 14 This is a schematic diagram of the transport skid mounting base for the blowout preventer of this utility model.

[0022] Among them, 1-top assembly, 2-bottom assembly, 3-left support, 4-right support, 5-widening platform, 6-rear support, 7-pre-lifting cylinder, 8-base lifting cylinder, 9-rear column, 10-adjusting cylinder, 11-side support, 12-front column, 13-derrick lifting cylinder, 14-wellhead center, 15-driller's cabin, 16-blowout preventer transport skid fixing seat, 17-blowout preventer transport skid, 18-tilting cylinder, 19-blowout preventer assembly, 20-fixing clip, 21-tilting arm, 22-bottom skid, 23-connecting seat, 24-limiting seat, 25-skid support, 26-bracket, 27-roller, 28-limiting frame. Detailed Implementation

[0023] The present invention will now be described in detail and completely with reference to the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be particularly noted that the technical solutions and features provided in the various parts of the present invention, including the following description, can be combined with each other without conflict.

[0024] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, and the specific implementation process is as follows: like Figures 1-14As shown, this embodiment provides an integrated, quick-installation and disassembly drilling and repair machine base. In transport mode, the base can be loaded as a single structure onto a flatbed truck for road transport. It includes: a bottom assembly 2 (containing all pipelines pre-installed within the bottom assembly 2); a top assembly 1, with a connecting seat 23 at its bottom for support and detachable connection to the bottom assembly 2 during transport; a front column 12 and a rear column 9, which together form a parallelogram folding mechanism; two base lifting cylinders 8 are arranged on both sides of the bottom assembly 2, with their lower ends connected to the bottom assembly 2 by pins and their upper ends connected to the top assembly 1 by pins. During transport, the parallelogram folding mechanism is folded, causing the top assembly 1 to be close to the bottom assembly 2 in the height direction, and the overall dimensions of the base meet the height and width restrictions for road transport.

[0026] The core design of this base lies in its ability to function as a complete structure during transport, directly mounted on a standard flatbed truck to comply with public road transport regulations. Key structural elements enabling this function include a bottom assembly 2 serving as the basic frame, and a top assembly 1 located above it. Connecting the bottom and top assemblies 1 are front uprights 12 and rear uprights 9, which are hinged together with the two assemblies to form a complete parallelogram folding mechanism. Furthermore, a base lifting cylinder 8 is positioned between the bottom assembly 2 and the top assembly 1, with its ends connected to both via pins. When the drilling rig needs to be moved, the base enters the transport state. At this time, by controlling the retraction of the base lifting cylinder 8, the parallelogram folding mechanism is driven to move, causing the top assembly 1 to fold downwards towards the bottom assembly 2 in the height direction, thus achieving longitudinal folding of the entire base structure. After this folding operation, the overall dimensions of the base, including its total height and width, are effectively controlled within the height and width limits stipulated by road transport regulations. This integrated design eliminates the need for disassembling the main structure into multiple independent modules, a step required for traditional bases. During the relocation process, the main body of the base does not require any disassembly and can be directly hoisted onto a flatbed truck for transportation. This fundamentally solves the problems of low operational efficiency and high operating costs caused by multiple disassembly and reassembly and multiple truck trips.

[0027] In another embodiment, the two-stage lifting system of the base is described in detail. This system adds a dedicated pre-lifting cylinder 7 in addition to the base lifting cylinder 8. The lower ends of the two pre-lifting cylinders 7 are connected to the bottom assembly 2 via pins, while their upper ends are not directly hinged to the top assembly 1, but are instead configured to engage with an arc-shaped plate fixedly mounted on the lower surface of the top assembly 1. This engagement is a slidable contact engagement.

[0028] The lifting process of the base from its transport state to its working state is designed in two distinct stages. The first stage is the pre-lifting stage: the pre-lifting cylinder 7 is operated to extend its push rod, the end of which slides along the curved surface of the arc plate, thereby smoothly lifting the massive top assembly 1 from its lowest folded position to a predetermined safe height. The purpose of this stage is to overcome the static friction and initial inertia of the structure. The second stage is the main lifting stage: after the pre-lifting step is completed and the top assembly 1 has been raised to a certain height, the base lifting cylinder 8 begins to work. At this time, since the pre-lifting cylinder 7 has provided the initial displacement, the base lifting cylinder 8 can more smoothly take over the subsequent lifting load, driving the parallelogram mechanism to continue moving until the top assembly 1 is pushed to the predetermined working height. This step-by-step lifting mechanism greatly improves the stability and safety of the lifting process.

[0029] In another embodiment, a widening platform 5 is hinged to the left side of the top assembly 1. The widening platform 5 folds upward in the transport state to reduce the width and unfolds outward in the working state to provide an operating platform.

[0030] This embodiment relates to the design of an additional working platform on the top assembly 1. A widened platform 5 is hingedly mounted on the left side of the top assembly 1. The main function of this widened platform 5 is to provide operators with additional working area and passageway, expanding the workspace, when the base is in the working state. To meet the width restrictions of road transport, the widened platform 5 is designed as a foldable structure. In the transport state, the operator flips the widened platform 5 upwards, so that it is flush against or parallel to the side of the top assembly 1, thereby significantly reducing the overall size of the base in the width direction and ensuring that it does not exceed the width limit during transport. When the base is in place at the well site and ready for use, the operator unfolds the widened platform 5 outwards, restoring it to a horizontal or preset working position, and secures it with pins or other locking mechanisms, forming a safe and stable extended operating platform. This design effectively resolves the contradiction between the large structure and transport width restrictions without affecting functionality.

[0031] In another embodiment, four side supports 11 are also installed on the outside of the two front columns 12 and the two rear columns 9. The upper ends of the side supports 11 are connected to the front columns 12 and the rear columns 9 by pins. The side supports 11 are folded inward or outward in the transport state to be stored on the side or inside of the front columns 12 and / or the rear columns 9, thereby avoiding excessive width.

[0032] This embodiment describes a support structure for enhancing the lateral stability of the base. The base has multiple side supports 11 distributed on both sides, with their upper ends connected to the outer sides of the front column 12 and rear column 9 via pins. In the transport state, these side supports 11 need to be folded up to avoid excessive structural width. Specifically, the side supports 11 are released from their working position, rotated inwards to fold against the sides of the front column 12 and rear column 9, or rotated outwards to a position that does not affect the overall transport width, and temporarily secured with a simple device. When the base is raised to the working position, these side supports 11 need to be unfolded to provide lateral restraint. The operator unfolds the side supports 11 from their folded state, connecting their lower ends to corresponding supports (such as the left support 3 and right support 4) fixed on both sides of the bottom assembly 2 via pins, thereby forming a stable triangular support structure that effectively restricts the lateral displacement and rotational freedom of the top assembly 1.

[0033] In another embodiment, a left support 3 and a right support 4 are respectively provided on both sides of the bottom assembly 2. The left support 3 and the right support 4 are connected to the bottom assembly 2 through a multi-pin structure, and have an unfolded working position and an upwardly folded transport position. In the working state, the lower end of the side support 11 is connected to the unfolded left support 3 and / or right support 4.

[0034] This embodiment details the structure of the supports on both sides of the bottom assembly 2 and their relationship with the side supports 11. A left support 3 and a right support 4 are respectively provided on both sides of the bottom assembly 2. The connection between these two supports and the bottom assembly 2 employs a multi-pin structure, typically a three-pin connection structure, where the working or transport state is fixed by replacing one of the pins. By operating these pins, the left support 3 and right support 4 can switch between two positions: one is an upward-folded transport position, where the supports are close to the side of the bottom assembly 2 to reduce width; the other is a horizontally unfolded working position, where the supports extend outwards, providing a connection base for the lower end of the side supports 11. In the working state, after the left support 3 and right support 4 are unfolded and fixed, the lower end of the aforementioned side supports 11 is connected to the pre-set connection points on these supports via pins. Thus, the side supports 11, the columns, and the supports together form a stable load-bearing frame, greatly enhancing the overall rigidity and stability of the base during operation.

[0035] In another embodiment, a rear support 6 is also included. The rear support 6 is a telescopic structure that retracts to its shortest length and is locked with a pin in the transport state; and extends to its longest length and is locked with a pin in the working state. Its lower end is provided with a roller and contacts the ground, and its upper end is connected to the top assembly 1.

[0036] This embodiment describes a support scheme for the rear of the base. The base is equipped with two rear supports 6, which are designed as telescopic structures, for example, consisting of an inner rod and an outer cylinder connected by pin holes. The total length can be adjusted by selecting different pin hole positions.

[0037] In transport mode, to reduce the overall length and volume of the equipment, the rear support 6 is retracted to its shortest possible length and locked by inserting a pin. At this time, the rear support 6 is transported as a compact component along with the base. In operating mode, the upper end of the rear support 6 is first connected to the rear of the top assembly 1 via a pin. Then, it is stretched to the required maximum length and locked with a pin. The lower end of the rear support 6 is equipped with rollers, which contact the well site surface after the drilling rig base is finally in place, forming a stable support together with the bottom assembly 2. The main function of the rear support 6 is to restrict the displacement and rotational freedom of the top assembly 1 in the longitudinal direction.

[0038] In another embodiment, the bottom assembly 2 integrates a derrick lifting cylinder 13 and an adjusting cylinder 10 for adjusting its angle. In the transport state, the derrick lifting cylinder 13 and the adjusting cylinder 10 remain integrally connected to the base without disassembly. This embodiment illustrates the integration scheme of the derrick lifting system on the base. The two derrick lifting cylinders 13 and their corresponding adjusting cylinders 10, necessary for derrick lifting, are directly integrated into the bottom assembly 2. The lower end of the derrick lifting cylinder 13 is connected to the bottom assembly 2 via a pin, giving it a degree of freedom to swing. One end of the adjusting cylinder 10 is connected to the bottom assembly 2, and the other end is connected to the cylinder body of the derrick lifting cylinder 13. By extending or retracting the adjusting cylinder 10, the derrick lifting cylinder 13 can be rotated around its lower hinge point, thereby changing its tilt angle. A key advantage is that, in the transport state, the entire derrick lifting system (including the lifting cylinders and adjusting cylinders 10) remains integrally connected to the base without additional disassembly, achieving true integrated transport. Once the base is installed in the working state, the derrick hoisting cylinder 13 can be adjusted to a precise vertical working position by operating the adjustment cylinder 10, or it can be temporarily tilted to a clearance position according to the site layout requirements, so as to leave space for the installation of the driller's cabin 15 or the operation of the blowout preventer assembly 19.

[0039] In another embodiment, at least one of the left support 3 / right support 4 is provided with a blowout preventer transport skid mounting base for guiding and receiving the movement of the blowout preventer transport skid toward the wellhead; the top assembly 1 is integrated with a mechanism for attaching the driller's cabin 15.

[0040] This embodiment integrates blowout preventer (BOP) installation auxiliary equipment and driller's cabin 15 mounting functions. A dedicated BOP transport skid mounting bracket 16 is installed on the left support 3. (For example...) Figure 14As shown, the blowout preventer (BOP) transport skid mounting base typically includes a bracket 26, two limiting brackets 28 for positioning, and multiple rollers 27 to facilitate the movement of the BOP transport skid. The rollers are mounted above the bracket, allowing the bottom skid of the BOP transport skid to slide on the bracket. When the BOP transport skid slides to the limiting bracket 24 and is stopped by the limiting bracket, it indicates that the BOP transport skid has reached its sliding position. The BOP transport skid 17 consists of a bottom skid, a tilting cylinder 18, a tilting arm 21, a limiting bracket 24, a skid support 25, and a fixing clip 20. During the installation of the BOP assembly 19, the transport skid with the BOP assembly 19 installed can be hoisted onto this mounting base as a whole. The sliding plate or wheels at the bottom of the transport skid cooperate with the rollers on the mounting base, allowing the operator to relatively easily push the heavy BOP assembly 19 towards the wellhead. Once the limiting seat 24 on the transport skid enters the limiting frame of the blowout preventer transport skid fixing seat, it indicates that the predetermined position has been reached. Subsequently, the erection and installation of the blowout preventer can be completed by operating mechanisms such as the tilting cylinder 18.

[0041] Meanwhile, a mechanism specifically designed for attaching the driller's cabin 15 is provided on the right side of the top assembly 1, enabling the driller's cabin 15, as an independent module, to be quickly and accurately hoisted and attached to the top assembly 1.

[0042] In another embodiment, the method of using the integrated quick-release drilling and overhaul rig base includes the following steps: Transportation steps: The base, which is in a folded transportation state, is loaded onto a flatbed transport vehicle and transported to the well site; Positioning and unfolding steps: hoist the entire base to the wellhead position, unfold the folded widened platform 5 and the left support 3 and right support 4; Pre-lifting step: Operate the pre-lifting cylinder 7 so that its push rod engages with the arc plate of the top assembly 1 to lift the top assembly 1 to a set height; Main lifting steps: Operate the base lifting cylinder 8 to drive the parallelogram folding mechanism to continue lifting the top assembly 1 to the predetermined working height; Stabilization steps: Install and lock the rear support 6 and the side support 11 to stabilize the base in the working state.

[0043] This embodiment describes the complete usage method of the integrated base from transportation to operation. First, the transportation step is performed: the base, in its fully folded state (including the folding of the parallelogram mechanism, the widening platform 5, and the retracted supports), is hoisted onto a flatbed transport vehicle and transported to the target well site. Next, the positioning and deployment step is performed: the base is hoisted to the center 14 of the wellhead, then the folded widening platform 5 is manually unfolded, and the left support 3 and right support 4 are unfolded to a horizontal working position and secured using pins. Then, the lifting process begins, which consists of two steps. The first step is the pre-lifting step: the pre-lifting cylinder 7 is operated, causing its push rod to extend and interact with the arc plate of the top assembly 1, smoothly lifting the top assembly 1 to an initial height. The second step is the main lifting step: after the pre-lifting is completed, the base lifting cylinder 8 is operated, driving the parallelogram mechanism to fully unfold, continuously lifting the top assembly 1 to the final predetermined working height. Finally, the stabilization steps are as follows: connect the upper end of the rear support 6 to the top assembly 1, adjust the length of the lower end and connect it to the bottom assembly 2 or make its rollers contact the ground and lock it; at the same time, unfold the side support 11, and pin its lower end to the unfolded left support 3 and right support 4, so that the entire base is stably in working condition.

[0044] In another embodiment, during the pre-lifting step, the top assembly 1 is lifted by the pre-lifting cylinder 7, so that the base lifting cylinder 8 changes from a non-stressed state to a pre-stressed state that is easy to start. After the main hoisting step, there is also an adjustment step: operating the adjustment cylinder 10 to change the tilt angle of the derrick hoisting cylinder 13 in order to avoid the installation space of the driller's room 15 or the blowout preventer assembly 19. Following the stabilization step, the step of installing the blowout preventer assembly 19 is also included: the transport skid containing the blowout preventer assembly 19 is hoisted onto the blowout preventer transport skid mounting base and pushed toward the wellhead along its rollers, and the blowout preventer assembly 19 is erected and installed at the wellhead by means of the tilting arm 21.

[0045] In this embodiment, the core function of the pre-lifting step, besides increasing the height, is to transform the originally loose or unloaded base lifting cylinder 8 into a tensioned state ready to be stressed through the action of the pre-lifting cylinder 7, creating favorable conditions for the subsequent main lifting start. After the main lifting step is completed, an adjustment step is added: the adjustment cylinder 10 connected to the derrick lifting cylinder 13 is operated to extend or retract, thereby changing the tilt angle of the derrick lifting cylinder 13. This operation is usually to open up space, facilitating the attachment of the driller's cabin 15 or providing convenience for the subsequent installation of the blowout preventer assembly 19, and avoiding interference between equipment. After the base is stabilized, there is also a blowout preventer assembly 19 installation step: the blowout preventer assembly 19, which has been assembled on the blowout preventer transport skid, is hoisted as a whole onto the blowout preventer transport skid fixing seat installed on the left / right supports 4 using hoisting equipment. Then, with the help of the rollers on the fixing seat, the transport skid is pushed towards the wellhead until the limiting device on it is engaged with the limiting frame of the fixing seat. Finally, the tilting cylinder 18 on the transport skid is used to push the tilting arm 21 to erect the horizontal blowout preventer assembly 19, and then the horizontal lifting system of the drilling rig is used to finally install it on the wellhead device.

[0046] Low-position installation of the base: The entire base is hoisted to the center 14 of the wellhead. The left support 3 and right support 4 on both sides of the bottom assembly 2 are unfolded, and the widened platform 5 on the left side of the top assembly 1 is unfolded. The two adjusting cylinders 10 are operated to push the two derrick lifting cylinders 13 towards the wellhead to avoid the installation space of the driller's cabin 15. The driller's cabin 15 is hung on the right side of the top assembly 1. The upper ends of the two rear supports 6 are connected to the pin shaft of the top assembly 1, and the rollers at the lower end of the rear supports 6 are in contact with the ground.

[0047] Base Lifting: Operate the two pre-lifting cylinders 7 to lift the base to a certain height. Operate the two base lifting cylinders 8 to continue lifting the base to the working position. The lower ends of the two rear supports 6 are connected to the bottom assembly 2 by pins. The rear supports 6 restrict the front-to-back displacement and rotational freedom of the top assembly 1. Deploy the four side supports 11 on both sides of the front column 12 and the rear column 9. The lower ends of the side supports 11 are connected to the left support 3 and the right support 4 by pins. The side supports 11 restrict the left-to-right displacement and rotational freedom of the top assembly 1. Operate the adjusting cylinder 10 to rotate the derrick lifting cylinder 13 to a vertical position to avoid the installation of the blowout preventer transport skid.

[0048] Blowout Preventer Assembly 19 Installation: Install the blowout preventer transport skid mounting base on the left support 3, hoist the blowout preventer transport skid (including the blowout preventer) onto the mounting base, and roll the blowout preventer transport skid along the mounting base toward the wellhead. The upper limit seat 24 of the transport skid enters the limit frame. Operate the two tilting cylinders 18 to push the rotating arm to rotate around the pivot pin to a vertical position. Install the blowout preventer on the wellhead device at the center 14 of the wellhead through the drilling and workover rig's traveling hoist system.

[0049] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. An integrated, quick-installation and disassembly drilling and repair machine base, characterized in that, The base, in its transport state, can be loaded as a single structure onto a flatbed truck for road transport, including: Bottom assembly; Top assembly; The front column and the rear column, together with the bottom assembly and the top assembly, constitute a parallelogram folding mechanism; The base lifting cylinder and the pre-lifting cylinder are connected between the bottom assembly and the top assembly; Side supports, folded inside the front and rear columns; The left and right supports are folded down on both sides of the bottom assembly; In the transportation state, the parallelogram folding mechanism is in a folded state, so that the top assembly is close to the bottom assembly in the height direction, the side support, left support and right support are in a folded state, and the overall dimensions of the base meet the height and width restrictions for road transportation.

2. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 1, characterized in that, The lower end of the pre-lifting cylinder is hinged to the bottom assembly, and the upper end is configured to slidably engage with the arc plate fixed to the top assembly, so as to lift the top assembly to a set height before the lifting action of the base lifting cylinder is performed.

3. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 1 or 2, characterized in that, The top assembly is hinged to a widening platform on its side, which folds upward in the transport state to reduce its width and unfolds outward in the working state to provide an operating platform.

4. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 1, characterized in that, The side supports are multiple in number. In the transport state, the side supports fold inward or outward to be stored in the side or inside of the front column and / or rear column, thereby avoiding excessive width and providing overall structural stability of the base in the left and right directions in the working state.

5. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 4, characterized in that, The bottom assembly is provided with a left support and a right support on both sides. The left support and the right support are connected to the bottom assembly through a multi-pin structure, and have an unfolded working position and an upwardly folded transport position. In the working state, the lower end of the side support is connected to the unfolded left support and / or right support.

6. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 1, characterized in that, It also includes a rear support, which is a telescopic structure that retracts to its shortest length and is locked with a pin in the transport state; and extends to its longest length and is locked with a pin in the working state to provide overall structural stability of the base in the front-rear direction. The lower end of the rear support is provided with a roller and contacts the ground, and the upper end is connected to the top assembly.

7. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 1, characterized in that, The bottom assembly integrates a derrick lifting cylinder and an adjusting cylinder for adjusting its angle. In the transport state, the derrick lifting cylinder and the adjusting cylinder remain integrally connected to the base and do not need to be disassembled.

8. The integrated quick-installation and disassembly drilling and repair machine base as described in claim 5, characterized in that, The left support is equipped with a blowout preventer transport skid fixing seat, which is used to guide and receive the movement of the blowout preventer transport skid toward the wellhead. The top assembly integrates a mechanism for attaching the driller's cabin.

Images