Well drilling and workover rig and adjusting device for aligning well center of well drilling and workover rig

Abstract

The invention relates to the technical field of petroleum drilling and workover rigs, in particular to a drilling and workover rig and an adjusting device for aligning the drilling and workover rig to the center of a borehole, the drilling and workover rig comprises a jacking oil cylinder and a walking translation mechanism, the jacking oil cylinder is used for driving a base to ascend and descend, and the walking translation mechanism is arranged below the jacking oil cylinder. The walking translation device is rotationally arranged relative to the base, the walking translation device can drive the jacking oil cylinder to linearly move back and forth in different directions, and the moving direction of the jacking oil cylinder is perpendicular to the jacking direction of the jacking oil cylinder; and the jacking oil cylinder can be controlled to move towards any direction through the walking translation device, so that the drilling and workover rig can be conveniently aligned with the center of a borehole.

Description

Technical Field

[0001] This invention relates to the field of oil drilling and workover rig technology, specifically to a drilling and workover rig and its adjustment device for aligning the wellbore center. Background Technology

[0002] During the rapid relocation and placement of oil drilling and workover rigs, the base is moved as a whole using an integrated towing method. The base is towed to the top of the square well, but the center of the base will deviate significantly from the original wellbore center. The conventional approach is for the driver to repeatedly reverse the trailer to adjust it, but this cannot meet the requirement of aligning the wellbore center. Adjusting the wellbore center takes a long time and affects the speed of the entire drilling rig relocation and placement.

[0003] Application No. 201811137125.3 discloses a trailer workover rig derrick adjustment device and a trailer workover rig. The device comprises a trailer, a support frame, a trailer workover rig derrick adjustment device, and a derrick, arranged sequentially from bottom to top. The trailer workover rig derrick adjustment device includes a double-acting hydraulic cylinder and a swinging device connected to both ends of the double-acting hydraulic cylinder via a fork. The swinging device includes a mounting base, a sliding shaft, and a bearing block. The sliding shaft is fixed on the mounting base, and the bearing block can slide on the sliding shaft. One end of the fork is connected to the bearing block, and the other end is connected to the double-acting hydraulic cylinder. The device moves the derrick left and right by pistons on both sides of the double-acting hydraulic cylinder in the same direction and synchronously, adjusting the position of the derrick. However, it can only adjust the position in one direction, making it difficult to align with the center of the wellbore. Summary of the Invention

[0004] The technical problem to be solved by this invention is that the base needs to be moved back and forth during the process of aligning the drilling rig with the center of the wellbore, which is time-consuming and labor-intensive.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] First, an adjustment device for aligning the wellbore center of a drilling and workover rig is provided, including a lifting cylinder and a traveling and translating device. The lifting cylinder is used to drive the base to rise and fall. The traveling and translating device is located below the lifting cylinder and is rotatably arranged relative to the base. The traveling and translating device can drive the lifting cylinder to move back and forth in a straight line in different directions, and the direction of movement of the lifting cylinder is perpendicular to the lifting direction of the lifting cylinder.

[0007] Furthermore, the lifting cylinder is rotatably connected to the base around its own axis, and the walking and translating device is connected to the lifting cylinder.

[0008] Furthermore, the walking and translating device includes a walking mechanism and a translating mechanism. Both the walking mechanism and the translating mechanism are rotatably arranged relative to the base. The walking mechanism is connected to the lifting cylinder and can drive the lifting cylinder to move in different directions. The translating mechanism is connected to the walking mechanism and can drive the walking mechanism to move back and forth in a straight line.

[0009] Furthermore, the traveling mechanism includes rollers and a translating trolley, the translating trolley being detachably connected to the bottom of the lifting cylinder, and a plurality of rollers being installed at the bottom of the translating trolley.

[0010] Furthermore, the translation mechanism includes a translation cylinder and a support plate. The support plate is disposed below the traveling mechanism, and the translation cylinder is mounted on the support plate and connected to the traveling mechanism.

[0011] Furthermore, a limiting plate is provided on the support pad, a limiting groove is formed on the limiting plate, and a limiting rod is provided on the translation trolley that passes through the limiting groove.

[0012] Furthermore, the two ends of the support pad are raised.

[0013] A drilling and workover rig includes a base and an adjustment device for aligning the wellbore center as described above.

[0014] The base is provided with a through hole, and the adjustment device is used to align the through hole on the base with the wellbore.

[0015] Furthermore, the upper end of the lifting cylinder is rotatably connected to the base by a bolt, the axis of the bolt is parallel to the axis of the lifting cylinder, the bolt can move up and down axially and is limited to the base, and the bolt can rotate circumferentially.

[0016] Furthermore, at least one wellbore centering adjustment device for the drilling and workover rig is provided at each of the four corners of the base.

[0017] The present invention has the following beneficial effects:

[0018] I. This invention allows the axis of the roller to face in different directions, so that the base can be moved in any direction when the roller rolls, thereby making it easier to align the center of the drilling and workover rig with the center of the wellbore, and facilitating subsequent work.

[0019] Second, the present invention allows the roller to roll on the support plate, making the roller roll more smoothly and less affected by the ground, making the device more convenient and reliable to use.

[0020] Third, the present invention utilizes a limiting groove and a limiting rod to make the connection between the support pad and the roller more stable, and at the same time, it also makes it easier for the roller to slide off the support pad, making the device more stable and reliable in use.

[0021] Fourth, this invention utilizes a translational hydraulic cylinder to drive the rollers, making it more accurate and convenient to adjust the position of the base, while also improving work efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the drilling and workover rig in this embodiment;

[0024] Figure 2 This is a schematic diagram showing the connection between the drilling and workover rig and the trailer in this embodiment;

[0025] Figure 3 This is a schematic diagram of the drilling and workover rig in this embodiment, showing the lifting state of the drilling and workover rig;

[0026] Figure 4 This is a top view of the drilling and workover rig in this embodiment;

[0027] Figure 5 This is a schematic diagram of the rotation of the support plate of the adjustment device;

[0028] Figure 6 This is a schematic diagram of the walking mechanism of the adjustment device;

[0029] Figure 7 A side view of the traveling mechanism of the adjustment device;

[0030] Figure 8 This is a diagram showing the first operating state of the regulating device;

[0031] Figure 9 This is a diagram showing the second operating state of the regulating device;

[0032] Figure 10 This is a shortened schematic diagram of the lifting cylinder of the adjusting device.

[0033] Attached reference numerals: 10 base, 11 trailer, 12 wheels;

[0034] 21 Frame, support rod; 22, 23 Hydraulic telescopic rod; 24 Fixed rod;

[0035] 30 boreholes;

[0036] 40 Lifting cylinder, 41 Roller, 42 Translation trolley, 43 Support pad, 44 Translation cylinder, 45 Limiting plate, 46 Limiting groove, 46, 47 Limiting rod, 48 Bolt;

[0037] 50 ground level. Detailed Implementation

[0038] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] This invention provides an adjustment device for aligning the wellbore center of a drilling and workover rig, such as... Figure 1 As shown, it includes a lifting cylinder 40, which is rotatably mounted on the base 10. The lifting cylinder 40 drives the base 10 to rise and fall. A traveling and translating device is provided at the bottom of the lifting cylinder 40, which drives the lifting cylinder 40 to move.

[0043] like Figure 6 and Figure 7As shown, the walking and translating device includes a walking mechanism and a translating mechanism. The walking mechanism includes a roller 41. The bottom of the lifting cylinder 40 is provided with a roller 41. When the walking and translating device touches the ground, it lifts the base 10. When the roller 41 rolls, it can drive the lifting cylinder 40 to move, thereby adjusting the position of the base 10. By rotating the lifting cylinder 40, the roller 41 can be turned in different directions, thus making the lifting cylinder 40 move in different directions.

[0044] Specifically, the translation mechanism includes a translation trolley 42, which is detachably connected to the bottom of the lifting cylinder 40. Several rollers 41 are installed inside the translation trolley 42, and a support plate 43 is provided below the translation trolley 42. The rollers 41 contact and cooperate with the support plate 43. During use, the support plate 43 is in contact with the ground 50. When the rollers 41 adjust the position of the base 10, they move on the support plate 43. In some embodiments, the two ends of the support plate 43 are raised.

[0045] In order to more accurately control the rolling distance of the roller 41, a translation cylinder 44 is provided between the support pad 43 and the translation trolley 42. The translation cylinder 44 can push the translation trolley 42 to move by extending or retracting, so that the roller 41 moves on the support pad 43, thereby adjusting the position of the base 10.

[0046] To ensure a more stable connection between the support plate 43 and the translation trolley 42, a limiting plate 45 is provided on the support plate 43. A limiting groove 46 is provided on the limiting plate 45. A limiting rod 47 is provided on the translation trolley 42, which passes through the limiting groove 46. When the translation cylinder 44 moves, the limiting rod 47 moves within the limiting groove 46, thus ensuring that the support plate 43 is stably installed on the translation trolley 42 and preventing the roller 41 from slipping off the support plate 43, thereby ensuring the stable use of the device.

[0047] The present invention also provides a drilling and workover rig, including the adjustment device as described above, wherein a through hole is provided on the base 10, and the adjustment device is used to align the center of the through hole on the base 10 with the center of the wellbore.

[0048] like Figure 4 , Figure 5 and Figure 10 As shown, since the roller 41 can only roll in one direction, in order to enable the base 10 to move in any direction and ensure that the center of the through hole on the base 10 is more accurately aligned with the center of the wellbore, the upper end of the lifting cylinder 40 is rotatably connected to the base 10 by a bolt 48. The axis of the bolt 48 is parallel to the axis of the lifting cylinder 40. The bolt 48 can move up and down axially and is limited to the base 10. The bolt 48 can rotate circumferentially. Therefore, the lifting cylinder 40 can be rotated at this time to make the roller 41 face any direction.

[0049] In this embodiment, when it is necessary to change the moving direction of the base 10, the lifting cylinder 40 shortens, causing the support pad 43 to leave the ground. Then, the lifting cylinder 40 is rotated to make the support pad 43 face different directions. When the direction is accurately adjusted, the lifting cylinder 40 extends, making the support pad 43 contact the ground 50 again. The translation cylinder 44 extends again, which allows the base 10 to move in different directions. The base can move in any direction on the plane. In other embodiments, the through hole on the base 10 can be aligned with the center of the wellbore by multiple adjustments.

[0050] like Figure 2 As shown, in order to facilitate the transfer of the base 10, a trailer 11 is detachably mounted on one end of the base 10 and a wheel 12 is detachably mounted on the other end. During the transfer process, the trailer 11 and the wheel 12 are on the ground, and the base 10 can be easily transferred using the trailer 11 and the wheel 12.

[0051] like Figure 8 and Figure 9 As shown, during the use of this device, the base 10 is first moved onto the wellbore 30 by the trailer 11. When adjusting the position of the base 10, the lifting cylinder 40 extends, so that the support pad 43 contacts the ground 50. The trailer 11 and wheels 12 can be removed, and the base 10 is lifted up, so that the entire base 10 is supported only by the lifting cylinder 40. Then, the translation cylinder 44 extends and retracts, so that the roller 41 rolls on the support pad 43, and the limiting rod 47 moves in the limiting groove 46. At this time, the base 10 is displaced relative to the support pad 43, thereby adjusting the position of the base 10 relative to the wellbore 30, so that the center of the drilling and workover rig 20 is aligned with the center of the wellbore 30, which facilitates subsequent work.

[0052] Meanwhile, if the initial stopping position of the base 10 deviates significantly, the length of the limiting groove 46 may be insufficient within a single adjustment distance. Therefore, multiple adjustments are required. Specifically, when the translation cylinder 44 extends to its limit position, the lifting cylinder 40 shortens, causing the support plate 43 to lift off the ground. During the shortening process of the lifting cylinder 40, the translation cylinder 44 can return to its original state. After the translation cylinder 44 moves into position, the lifting cylinder 40 extends again, lifting the base 10. Since the translation cylinder 44 has returned to its original state, there is sufficient margin to push the lifting cylinder 40 to move again, thus causing the base 10 to continue moving in the same direction. Through multiple adjustments, the center of the through hole on the base 10 is aligned with the center of the wellbore.

[0053] like Figure 1 and Figure 3As shown, in this embodiment, due to some height restrictions during the transfer of the base 10, the height of the entire equipment needs to be reduced during the transfer of the base 10. However, after the base 10 is moved to the position of the wellbore 30, it needs to be raised. To achieve this effect, several parallel support rods 22 are rotatably installed between the frame 21 and the base 10. At the same time, a hydraulic telescopic rod 23 is rotatably installed between the frame 21 and the base 10. When the hydraulic telescopic rod 23 extends, it can lift the frame 21. At this time, each support rod 22 rotates upward synchronously, raising the frame 21. When the hydraulic telescopic rod 23 shortens, each support rod 22 rotates downward synchronously, lowering the frame 21 to meet the height restriction requirements.

[0054] To reduce the load on the hydraulic telescopic rod 23 when lifting the frame 21, a fixed rod 24 is rotatably mounted on the frame 21. The fixed rod 24 is detachably connected to the base 10. When the frame 21 is raised, the fixed rod 24 is connected to the base 10, so that the fixed rod 24, the support rod 22 and the base 10 form a stable triangle. At this time, even if the hydraulic telescopic rod 23 retracts slightly, it will not cause the frame 21 to fall, thereby reducing the load on the hydraulic telescopic rod 23 in the working state and improving the service life of the hydraulic telescopic rod 23.

[0055] In this embodiment, four adjustment devices are arranged in a matrix on the base 10. It should be understood that the above description of specific embodiments of the present invention is merely to illustrate the technical approach and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. An adjustment device for aligning the wellbore center of a drilling and workover rig, characterized in that: The invention comprises a lifting cylinder (40) and a travel translation device, wherein the lifting cylinder (40) is used to drive the base (10) to rise and fall, and the travel translation device is arranged below the lifting cylinder (40). The travel translation device is rotatably arranged relative to the base (10), and the travel translation device can drive the lifting cylinder (40) to move back and forth in a straight line in different directions, and the moving direction of the lifting cylinder (40) is perpendicular to the lifting direction of the lifting cylinder (40).

2. The adjusting device for aligning the wellbore center of a well drilling and workover rig according to claim 1, characterized in that: The lifting cylinder (40) is rotatably connected to the base (10) around its own axis, and the walking translation device is connected to the lifting cylinder (40).

3. The adjusting device for aligning the wellbore center of a well drilling and workover rig according to claim 1, characterized in that: The walking and translating device comprises a walking mechanism and a translating mechanism, wherein the walking mechanism and the translating mechanism are both rotatably arranged relative to the base (10), the walking mechanism is connected to the lifting cylinder (40) and can drive the lifting cylinder (40) to move in different directions, and the translating mechanism is connected to the walking mechanism and can drive the walking mechanism to move back and forth in a straight line.

4. The adjusting device for aligning the wellbore center of a well drilling and workover rig according to claim 3, characterized in that: The walking mechanism comprises a roller (41) and a translation pulley (42); the translation pulley (42) is detachably connected to the bottom of the lifting cylinder (40); and a plurality of the rollers (41) are mounted on the bottom of the translation pulley (42).

5. The adjusting device for aligning the wellbore center of a well drilling and workover rig according to claim 3, characterized in that: The translation mechanism comprises a translation oil cylinder (44) and a support pad (43), wherein the support pad (43) is arranged below the traveling mechanism, and the translation oil cylinder (44) is mounted on the support pad (43) and connected to the traveling mechanism.

6. The adjusting device for aligning the wellbore center of a well drilling and workover rig according to claim 5, characterized in that: A limit plate (45) is arranged on the support pad (43), a limit groove (46) is provided on the limit plate (45), and a limit rod (47) is arranged on the translation pulley (42) and is inserted into the limit groove (46).

7. The adjusting device for aligning the wellbore center of a well drilling and workover rig according to claim 5, characterized in that: The two ends of the supporting pad (43) are raised.

8. A drilling and workover rig, characterized in that: A wellbore centering adjustment device comprising a base (10) and a well drilling and workover machine according to any one of claims 1 to 7; The base (10) is provided with a through hole, and the adjustment device is used to align the through hole on the base (10) with the wellbore.

9. The well drilling and workover rig according to claim 8, characterized in that: The upper end of the lifting cylinder (40) is rotatably connected to the base (10) via a bolt (48); the axis of the bolt (48) is parallel to the axis of the lifting cylinder (40); the bolt (48) is axially movable up and down and limited to the base (10); and the bolt (48) is circumferentially rotatable.

10. The well drilling and workover rig according to claim 8, characterized in that: At least one adjusting device for aligning the wellbore center of the well drilling and workover machine is provided at each of the four corners of the base (10).

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