A multifunctional operating trolley for offshore drilling

Abstract

The camming mechanism is a kind of multifunctional operation platform for offshore drilling, and the camming mechanism is provided with a plurality of camming oil cylinders on the camming oil cylinder, and the telescopic rod of each camming oil cylinder is connected with the camming roller which moves with it and abuts against the drilling pipe string, and the camming rollers on the two camming guide mechanisms are symmetrically arranged on both sides of the drilling pipe string, and the symmetrically distributed camming rollers are evenly spaced along the vertical direction, and each closing slide rail is respectively equipped with a closing oil cylinder which pushes the camming guide mechanisms to slide. The two camming guide mechanisms are closed together so that the camming rollers on the two camming guide mechanisms are pressed against both sides of the pipe string, and the closing oil cylinder pushes the camming guide mechanisms to move until the camming rollers just touch the pipe string and stop. When the pipe string is lifted or lowered, the camming rollers will be driven accordingly. When the pipe string deviates under the action of waves or the outer diameter of the pipe string changes when it is lifted or lowered, the camming oil cylinder on the camming guide mechanism automatically extends and retracts to adjust the extension and retraction amount of its piston rod to adaptively adjust the position of the camming roller.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and in particular to a multifunctional operating trolley for marine drilling. Background Art

[0002] Traditional moonpool trolleys on drilling vessels or platforms are typically single-purpose, primarily used to move equipment, such as BOP trolleys and Christmas tree trolleys. Due to space constraints in the moonpool, the inventory of trolleys is limited to one or two, severely limiting the functions and processes these trolleys can perform. The dynamic and complex offshore drilling environment can easily cause pipe string deflection or changes in outer diameter. Patent document CN208899487U discloses a pipe lowering device for an offshore drilling platform, including a working platform, a support frame and a lifting mechanism. Support columns are fixedly installed on both sides of the bottom end of the working platform, and mounting plates are fixedly installed on the bottom ends of the support columns. A lowering mechanism is fixedly installed on the bottom ends of the mounting plates. Support seats are fixedly installed on both sides of the top end of the working platform, and a support frame is fixedly installed on the top end of the support seat. A fixing mechanism is movably installed on the bottom end of the support frame, and a lifting mechanism is movably installed on the bottom end of the fixing mechanism. A lowering pipe is fixedly installed on the bottom end of the lifting mechanism through a clamp, but the setting of the clamp cannot guarantee the offset limit of the pipe column. Summary of the Invention

[0003] The purpose of the present invention is to provide a multifunctional work trolley for marine drilling to solve the problems existing in the above-mentioned prior art. The straightening cylinder that controls the straightening roller on the straightening guide mechanism automatically adjusts the extension of the piston rod to ensure that the straightening roller maintains close contact with the pipe string. At the same time, the reaction force given by the cylinder limits the lateral displacement of the pipe string, thereby playing a straightening and guiding role on the pipe string.

[0004] To achieve the above-mentioned objectives, the present invention provides the following solution: The present invention provides a multifunctional operating trolley for marine drilling, comprising a trolley body mounted at the drilling head and a base movably arranged on the trolley body, the base being provided with an opening for the drilling pipe string to enter, and symmetrically arranged closing slide rails extending in the same straight line direction on both sides of the opening, each of the closing slide rails being slidably provided with a straightening guide mechanism, the straightening guide mechanism being provided with a plurality of straightening oil cylinders arranged in a vertical direction, the telescopic rod of each straightening oil cylinder being connected with a straightening roller which moves with it and abuts against the drilling pipe string, the straightening rollers on the two straightening guide mechanisms being symmetrically arranged on both sides of the drilling pipe string, the symmetrically distributed straightening rollers being evenly spaced in the vertical direction, and each of the closing slide rails being respectively equipped with a closing oil cylinder for pushing the straightening guide mechanism to slide, and each of the closing oil cylinders being fixed on the base.

[0005] Preferably, a connecting portion for the drilling pipe to enter the inner side of the opening is opened on one side edge of the base, and the connecting portion passes through the base in a vertical direction.

[0006] Preferably, the movement direction of the base along the trolley body is the same as the direction in which the drilling pipe string enters the connecting portion, and the closing slide rail extends in a direction perpendicular to the movement direction of the base.

[0007] Preferably, a matching walking roller and a walking slide are provided between the trolley body and the base, the walking slide extends along the direction in which the drilling pipe enters the connecting portion, and the walking roller is equipped with a locking mechanism for locking it at any position on the walking slide.

[0008] Preferably, the trolley body is provided with two parallel slide rails, the base is mounted on the two slide rails, and the two slide rails are symmetrically arranged on both sides of the drilling well.

[0009] Preferably, a transition mounting portion is detachably connected between the base and the straightening guide mechanism, and the closing slide rail and the closing cylinder are both mounted on the transition mounting portion.

[0010] Preferably, a plurality of the closing slide rails are provided on the transition mounting portion, and the closing slide rails are evenly spaced along the moving direction of the base, and the straightening guide mechanism is mounted on each of the closing slide rails.

[0011] Preferably, an operating platform that moves with the straightening guide mechanism is provided on the top, and guardrails are provided around the operating platform, each of which surrounds an operating space for manual operation.

[0012] Preferably, a scissor-type lifting bracket is provided between the operating platform and the righting guide mechanism, and the scissor-type lifting bracket is provided with a lifting cylinder for driving the scissor-type lifting bracket to expand in a vertical direction.

[0013] Compared with the prior art, the present invention has achieved the following technical effects:

[0014] First, an opening for the drilling pipe to enter is provided on the base, and closing slide rails extending in the same straight line direction are symmetrically provided on both sides of the opening, and a straightening guide mechanism is slidably provided on each closing slide rail, and a number of straightening oil cylinders arranged in the vertical direction are provided on the straightening guide mechanism, and the telescopic rods of each straightening oil cylinder are connected to straightening rollers that move with it and abut against the drilling pipe, and the straightening rollers on the two straightening guide mechanisms are symmetrically arranged on both sides of the drilling pipe, and the symmetrically distributed straightening rollers are evenly spaced in the vertical direction, and each closing slide rail is respectively equipped with a closing oil cylinder for pushing the straightening guide mechanism to slide, and each closing oil cylinder is fixed on the base, and in the process of placing the pipe, the opening is arranged relative to the drilling well, so that the pipe can be extended into the drilling well through the opening, and symmetrically through the closing slide rails. The two cams are arranged on both sides of the opening so that the straightening guide mechanisms can gather at the opening or separate along the closing slide rails. In the process of lowering the pipe string, the two straightening guide mechanisms are closed together so that the straightening rollers on the two mechanisms are pressed against both sides of the pipe string. The closing oil cylinder pushes the straightening guide mechanism to move until the straightening rollers just touch the pipe string and stop. When the pipe string is lifted or lowered, the straightening rollers will follow accordingly. When the pipe string deviates under the action of waves or the outer diameter of the pipe string changes when it is lifted or lowered, the straightening oil cylinder on the straightening guide mechanism automatically retracts and retracts the piston rod to adaptively adjust the position of the straightening roller to ensure that the straightening roller maintains close contact with the pipe string. At the same time, the lateral displacement of the pipe string is limited by the reaction force given by the straightening oil cylinder, thereby effectively straightening and guiding the pipe string.

[0015] Second, a connecting portion is provided on one side edge of the base for the drilling pipe to enter the inside of the opening. The connecting portion passes through the base in a vertical direction. By setting up the connecting portion, the drilling pipe can enter the inside of the opening along one side, which facilitates the connection between the pipe and the opening and improves the work efficiency of the entire pipe installation.

[0016] Third, the movement direction of the base along the trolley body is the same as the direction in which the drilling pipe enters the connecting part, and the sliding rails are extended in a direction perpendicular to the movement of the base. Therefore, before the pipe is clamped and straightened, the base is moved so that the connecting part arranged on it can move with it to the position of the pipe until the opening is correspondingly sleeved on the outer peripheral side of the pipe, and then the pipe is clamped and straightened by the straightening roller.

[0017] Fourth, the trolley body and the base are provided with matching travel rollers and travel rails. The travel rails extend along the direction in which the drilling pipe enters the connecting part. Through the mobile setting of the base, it can be used to fix the equipment and move under the cooperation of the travel rollers and the travel rails to realize the function of transporting large-volume equipment. The travel rollers are equipped with a locking mechanism to lock them at any position on the travel rails. The locking mechanism can quickly position them to achieve precise transportation of large-volume equipment.

[0018] Fifth, a scissor-type lift bracket is installed between the operating platform and the straightening and guiding mechanism. This bracket is equipped with a lifting cylinder that drives it vertically, allowing the operating platform to be adjusted vertically, allowing operators to operate at any height on the pipe string. Furthermore, the entire device integrates three functional modules: equipment transportation, pipe string straightening and guiding, and a manual work platform, into a single vehicle, allowing each function to be performed simultaneously or independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a side view of the overall structure of the present invention;

[0021] Figure 2 It is a top view of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structural system of the present invention in a standby state;

[0023] Figure 4 It is a schematic diagram of the pipe string righting operation state of the overall structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the operating platform of the present invention in a raised operating state;

[0025] Among them, 1-base, 2-transition mounting part, 3-righting guide mechanism, 4-operating platform, 5-close slide rail, 6-guide limit hole, 7-guardrail, 8-lifting cylinder, 9-righting roller, 10-righting cylinder, 11-pulley assembly, 12-close cylinder, 13-pipe column, 14-opening, 15-travel roller, 16-bolt hole, 17-travel slide rail, 18-guide limit bolt. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a multifunctional work trolley for marine drilling to solve the problems existing in the above-mentioned prior art. The straightening cylinder that controls the straightening roller on the straightening guide mechanism automatically adjusts the extension of the piston rod to ensure that the straightening roller maintains close contact with the pipe string. At the same time, the reaction force given by the cylinder limits the lateral displacement of the pipe string, thereby playing a straightening and guiding role on the pipe string.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 5 As shown, this embodiment provides a multifunctional operation trolley for marine drilling, including a trolley body mounted at the wellhead and a base 1 movably arranged on the trolley body. The base 1 is a support platform for the entire trolley, and is preferably a rectangular platform structure as a whole. An opening 14 for a drilling pipe 13 to enter is provided on the base 1. Further, it is convenient to move the base 1 until the opening 14 is arranged opposite to the wellhead. Both sides of the opening 14 are symmetrically provided with sliding rails 5 extending in the same straight direction. Each sliding rail 5 is slidably provided with a The straightening guide mechanism 3 is provided with a plurality of straightening cylinders 10 arranged in the vertical direction. The telescopic rod of each straightening cylinder 10 is connected with a straightening roller 9 which moves with it and abuts against the drilling pipe 13. The straightening rollers 9 on the two straightening guide mechanisms 3 are symmetrically arranged on both sides of the drilling pipe 13. The straightening rollers 9 symmetrically distributed are evenly spaced along the vertical direction, and each closing slide rail 5 is respectively equipped with a closing cylinder 12 for pushing the straightening guide mechanism 3 to slide. Each closing cylinder 12 is fixed on the base 1. During the process of inserting the pipe string 13, the opening 14 is arranged relative to the wellbore, so that the pipe string 13 can be extended into the well through the opening 14, and the slide rails 5 are symmetrically arranged on both sides of the opening 14, so that the straightening guide mechanism 3 can be gathered at the opening 14 along the straightening slide rails 5 or separated. During the process of lowering the pipe string 13, the two straightening guide mechanisms 3 are brought together, so that the straightening rollers 9 on both sides are pressed against both sides of the pipe string 13, and the straightening guide mechanism 3 is pushed by the close cylinder 12 to move until the straightening rollers 9 just touch the pipe string 1 3. When the pipe string 13 is lifted or lowered, the straightening roller 9 will be driven accordingly. When the pipe string 13 is offset under the action of waves or the outer diameter of the pipe string 13 changes when it is lifted or lowered, the straightening cylinder 10 on the straightening guide mechanism 3 will automatically extend and retract to adjust the extension amount of its piston rod to adaptively adjust the position of the straightening roller 9 to ensure that the straightening roller 9 and the pipe string 13 maintain close contact. At the same time, the reaction force given by the straightening cylinder 10 limits the lateral displacement of the pipe string 13, thereby playing an effective straightening and guiding role for the pipe string 13.

[0030] Among them, a connecting portion is provided on one side edge of the base 1 for the drilling pipe string 13 to enter the inside of the opening 14. The preferred connecting portion is combined with the opening 14 to form a long U-shaped opening structure and is arranged in the middle position of the base 1 to facilitate the pipe string 13 to enter the center position of the base 1. The connecting portion passes through the base 1 in the vertical direction. By setting the connecting portion, the drilling pipe string 13 can enter the inside of the opening 14 along one side, which facilitates the connection between the pipe string 13 and the opening 14 and improves the work efficiency of the installation of the entire pipe string 13.

[0031] Furthermore, the movement direction of the base 1 along the trolley body is the same as the direction in which the drilling pipe 13 enters the connecting part, and the sliding rails 5 are extended in a direction perpendicular to the movement of the base 1. Before the pipe 13 is clamped and straightened, the base 1 is moved so that the connecting part provided thereon can move with it to the position of the pipe 13 until the opening 14 is correspondingly sleeved on the outer peripheral side of the pipe 13, and then the pipe 13 is clamped and straightened by the straightening roller 9.

[0032] As a preferred embodiment of the present invention, a matching walking roller 15 and a walking rail 17 are provided between the trolley body and the base 1 to constrain the entire base 1 on the walking rail 17, so that the base 1 can move in both directions along the walking rail 17. The walking rail 17 extends along the direction in which the drilling pipe 13 enters the connecting part to ensure that the drilling pipe 13 can effectively enter the inside of the opening 14 through the movement of the base 1. The mobile setting of the base 1 can be used to fix the equipment, which moves under the cooperation of the walking roller 15 and the walking rail 17 to realize the function of moving large-volume equipment. The walking roller 15 is equipped with a locking mechanism to lock it at any position on the walking rail 17. The locking mechanism can quickly position it to achieve precise transportation of large-volume equipment.

[0033] Furthermore, a transition mounting portion 2 is detachably connected between the base 1 and the straightening guide mechanism 3. Preferably, the transition mounting portion 2 is a rectangular platform as a whole, but is smaller than the base 1. A through hole is provided in the middle that is adapted to and has a corresponding position with the opening 14 and the connecting portion structure. The closing slide rail 5 and the closing cylinder 12 are both installed on the transition mounting portion 2 to facilitate disassembly and maintenance of the closing slide rail 5 and the closing cylinder 12. Preferably, a plurality of bolt holes 16 are provided on the base 1 and are evenly arranged around the outer periphery of the opening 14, and a plurality of guide limit holes 6 are also provided on the base 1, which are evenly arranged around the outer periphery of each bolt hole 16. During the connection process between the base 1 and the transition mounting part 2, a guide limit bolt 18 is provided in the guide limit hole 6. The guide limit bolt 18 passes through the base 1 and is inserted into the guide limit hole 6 of the base 1. After the guide limit bolt 18 is rotated 90 degrees, the bolt ear plate avoids the hole opening, and then the nut is tightened on the upper part of the base 1 and the top of the exposed guide limit bolt 18, so that the entire base 1 and the transition mounting part 2 are guided and limited and initially fixed. After the entire base 1 and the transition mounting part 2 are initially fixed, the base 1 and the transition mounting part 2 are tightened by setting bolts through the bolt holes 16 to achieve tight fixation of the base 1 and the transition module, so that the entire base 1 can move with the trolley, be locked and work normally.

[0034] The transition mounting portion 2 is provided with a plurality of collapsing rails 5, each of which is evenly spaced along the direction of movement of the base 1. The righting guide mechanism 3 is mounted on each of the collapsing rails 5 to ensure that the righting guide mechanism 3 can move stably along the collapsing rails 5 and prevent the righting guide mechanism 3 from tipping over due to a shift in its center of gravity. Furthermore, the righting guide mechanism 3 is provided with a pulley assembly 11 that moves along the collapsing rails 5.

[0035] Furthermore, an operating platform 4 that moves with the straightening guide mechanism 3 is provided on the top, and guardrails 7 are provided around the operating platform 4. Each guardrail 7 surrounds an operating space for manual operation. The vehicle is provided with an operating platform 4, which is convenient for workers to perform manual operations such as tying cards in the moon pool area during drilling operations.

[0036] As a preferred embodiment of the present invention, a scissor-type lift bracket is installed between the operating platform 4 and the righting guide mechanism. The scissor-type lift bracket is equipped with a lifting cylinder that drives it to expand vertically, allowing the operating platform 4 to be adjusted vertically, thereby enabling operators to work at any height on the pipe string. When the operating platform 4 is not raised, the scissor-type lift bracket and lifting cylinder 8 are stacked on top of the righting guide mechanism 3. As the transition mounting portion 2 closes, the cylinder 12 pushes the righting roller 9 until it contacts the pipe string 13, and the scissor-type lift bracket closes to create a hollow working space in the area around the pipe string 13. Furthermore, the lifting cylinder 8 inside the scissor-type lift bracket can be extended to propel the entire scissor-type lift bracket to any desired height, facilitating operations.

[0037] Preferably, the straightening and guiding mechanism 3 and the operating platform 4 are both removable. When straightening and manual operation are not required, these two structures and the transition mounting portion 2 can be removed, leaving the base 1 as a basic trolley, enabling the transport of large-volume equipment. This device integrates three functional modules—equipment transport, string 13 straightening and guiding, and a manual operation platform—into a single vehicle, enabling the simultaneous or independent performance of various functions.

[0038] Adaptive changes based on actual needs are all within the scope of protection of the present invention.

[0039] It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A multifunctional operating trolley for offshore drilling, characterized in that: The trolley body comprises a trolley body mounted at the drilling port and a base movably arranged on the trolley body, the base being provided with an opening for the drilling pipe string to enter, and symmetrically arranged closing slide rails extending in the same straight line direction on both sides of the opening, a straightening guide mechanism being slidably provided on each of the closing slide rails, a plurality of straightening oil cylinders arranged in a vertical direction being provided on the straightening guide mechanism, a telescopic rod of each straightening oil cylinder being connected with a straightening roller which moves therewith and abuts against the drilling pipe string, the straightening rollers on the two straightening guide mechanisms being symmetrically arranged on both sides of the drilling pipe string, the symmetrically distributed straightening rollers being evenly spaced in the vertical direction, and each of the closing slide rails being respectively equipped with a closing oil cylinder for pushing the straightening guide mechanism to slide, and each of the closing oil cylinders being fixed on the base; A connecting portion is provided on one side edge of the base for the drilling pipe to enter the inner side of the opening, and the connecting portion passes through the base in a vertical direction; The movement direction of the base along the trolley body is the same as the direction in which the drilling pipe string enters the connecting portion, and the closing slide rail extends in a direction perpendicular to the movement direction of the base; A traveling roller and a traveling slide rail are provided between the trolley body and the base. The traveling slide rail extends in the direction in which the drilling pipe enters the connecting portion, and the traveling roller is equipped with a locking mechanism for locking it at any position on the traveling slide rail.

2. The multifunctional operation vehicle for offshore drilling according to claim 1, characterized in that: The trolley body is provided with two parallel arranged walking slide rails, the base is mounted on the two walking slide rails, and the two walking slide rails are symmetrically arranged on both sides of the drilling well.

3. The multifunctional operation vehicle for offshore drilling according to claim 2, characterized in that: A transition mounting portion is detachably connected between the base and the straightening guide mechanism, and both the closing slide rail and the closing oil cylinder are mounted on the transition mounting portion.

4. The multifunctional operation vehicle for offshore drilling according to claim 3, characterized in that: The transition mounting portion is provided with a plurality of the closing slide rails, each of the closing slide rails is distributed at equal intervals along the moving direction of the base, and the straightening guide mechanism is mounted on each of the closing slide rails.

5. The multifunctional operation vehicle for offshore drilling according to claim 4, characterized in that: An operating platform that moves with the straightening guide mechanism is provided on the top of the operating platform. Guardrails are provided around the operating platform. Each guardrail surrounds an operating space for manual operation.

6. The multifunctional operation vehicle for offshore drilling according to claim 5, characterized in that: A scissor-type lifting bracket is provided between the operating platform and the righting guide mechanism, and the scissor-type lifting bracket is provided with a lifting cylinder for driving the scissor-type lifting bracket to expand in a vertical direction.

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