CN117552717A - Wellhead central control method for low-level assembly state of rotary lifting type base of petroleum drilling machine - Google Patents
Wellhead central control method for low-level assembly state of rotary lifting type base of petroleum drilling machine Download PDFInfo
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- CN117552717A CN117552717A CN202210946589.9A CN202210946589A CN117552717A CN 117552717 A CN117552717 A CN 117552717A CN 202210946589 A CN202210946589 A CN 202210946589A CN 117552717 A CN117552717 A CN 117552717A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005553 drilling Methods 0.000 title claims description 11
- 239000003208 petroleum Substances 0.000 title claims description 11
- 238000004080 punching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000004886 process control Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a central control method for a wellhead in a low-level assembly state of a lifting base of an oil rig, which comprises the steps of perforating lugs on rear bases on two sides in an integral processing mode, correspondingly connecting one ends of front stand columns, middle stand columns and rear stand columns on two sides with corresponding lug seats of a lower base by using pin shafts, horizontally arranging the front stand columns, the middle stand columns and the rear stand columns on two sides along the same direction, fixing the positions of the front stand columns on two sides, and keeping the central connecting lines of pin holes at two ends of the adjacent stand columns to form a parallelogram; the other ends of the front upright posts, the middle upright posts and the rear upright posts on the two sides are connected with corresponding lugs of the upper-layer upper seat by using pin shafts, so that the central projection coincidence of the upper-layer and lower-layer wellhead in the upright post vertical state can be realized. The invention can not only ensure the requirement of the high state of the base, but also reduce the processing difficulty and the safety risk, and has the characteristics of convenient operation, simple tool, safety and reliability, and can meet the requirement without depending on special equipment.
Description
Technical Field
The invention belongs to the technical field of petroleum drilling equipment manufacturing, and particularly relates to a wellhead central control method for a low-level assembly state of a rotary lifting base of a petroleum drilling machine.
Background
The spiral lifting type base is formed by assembling multiple parts, each part is a large-scale welding structural part, and due to factors such as manufacturing tolerance and the like existing in the manufacturing process, the base is lifted to a working position after being assembled, and the fact that when the vertical columns are ensured to be vertical, the centers of the wellhead in the front-rear direction of the upper layer and the lower layer cannot be overlapped often occurs. The size of each part in the base is larger, the structure is complex, some parts are difficult to integrally machine, and the precision of the parts which can be machined is improved by adopting the integral machining or the parts which can be machined are further improved, so that the manufacturing cost and the manufacturing period are greatly increased; if the base is assembled when the base is lifted to a high position, the upper layer is not reliably supported by the middle layer, so that the upper layer has unstable safety risk, and the problems of high manufacturing difficulty, high production cost and high safety risk are faced.
Disclosure of Invention
The invention aims to provide a wellhead center control method for a low-level assembly state of a rotary lifting type base of an oil rig, which can simply and efficiently align and coincide the centers of an upper layer wellhead and a lower layer wellhead of the rotary lifting type base after lifting.
The technical scheme adopted by the invention is that the wellhead central control method for the low-level assembly state of the rotary lifting type base of the petroleum drilling machine specifically comprises the following steps:
step 1, punching lugs on rear bases on two sides in an integral processing mode, and processing two ends of a front upright post, a middle upright post, a rear upright post and an inclined upright post on two sides into pin holes;
step 2, adjusting the rear bases on two sides to be coaxial and equal in height with the centers of the corresponding pin shaft holes, wherein the central connecting lines of any two groups of pin shaft holes are parallel, fixing the rear bases into a whole at the moment, connecting the rear bases on two sides with the front bases on the corresponding sides through pin shafts, and fixedly connecting two ends of the connecting frame to opposite side walls of the front bases on two sides;
step 3, connecting one end of the front upright posts on two sides with the lug seats on the upper surfaces of the corresponding rear bases on two sides by using pin shafts, connecting the lug seats close to the front bases, connecting one end of the middle upright posts on two sides with the lug seats on the corresponding rear bases on two sides by using pin shafts, connecting one end of the rear upright posts on two sides with the upper surfaces of the corresponding rear bases on two sides by using pin shafts, and connecting the connecting positions of the rear upright posts on two sides with the lug seats far away from the front bases;
step 4, connecting one ends of the oblique stand columns on the two sides with the lug seats of the rear bases on the corresponding sides through pin shafts, wherein the connected lug seats are positioned on the opposite sides of the rear bases on the two sides and close to the rear stand columns, and the other ends of the connected lug seats are in pin joint with the middle stand columns;
step 5, dismantling oblique stand columns at two sides, reversing front stand columns, middle stand columns and rear stand columns at two sides to the direction of a front base, and adjusting positions among the front stand columns, the middle stand columns and the rear stand columns at two sides to form a parallelogram;
step 6, after the position of the upright post is adjusted in the step 5, connecting the upper base with the other ends of the front upright post, the middle upright post, the inclined upright post and the rear upright post at two sides respectively through pin shafts;
and 7, lifting the front upright post, the middle upright post and the rear upright post to keep vertical, so that the central projections of the upper and lower layer wellhead are overlapped.
The present invention is also characterized in that,
in the step 2, the rear base is connected into a whole, namely, two ends of the connecting beam are aligned with lug holes on opposite sides of the rear base on two sides far away from the front base, then the connecting beam is connected by utilizing a pin shaft, one end of the diagonal brace is aligned with lug holes on the side wall of the connecting beam, the other end of the diagonal brace is aligned with lug holes on opposite sides of the rear base on two sides, and two ends of the diagonal brace are also connected by adopting pin shafts.
And step 4, the specific connection mode of the oblique upright posts on the two sides and the middle upright post on the corresponding side is that the oblique upright posts on the two sides are laid down towards the middle upright post on the corresponding side until one end of the oblique upright post is abutted against the side wall of the middle upright post, and the lug plate is fixedly connected at the abutting position of the middle upright post corresponding to the oblique upright post and is used for being connected with the oblique upright post.
In the step 5, the positions of the front upright posts, the middle upright posts and the rear upright posts on two sides meet the parallelogram principle, namely when the front upright posts on two sides are placed to the lowest position and the heights of the pin hole centers on two ends are H, the positions of the front upright posts on two sides are fixed, then the distances between the pin hole centers on two ends of the middle upright posts on two sides and the pin hole centers on two ends of the front upright posts on two sides are adjusted, and when the connecting lines of the pin hole centers on two ends of the middle upright posts on two sides and the pin hole centers on two ends of the corresponding front upright posts on two sides form a parallelogram, the positions of the middle upright posts on two sides are fixed; and then adjusting the distance between the pin hole centers at the two ends of the rear upright posts at the two sides and the pin hole centers at the two ends of the middle upright post, so that the connecting lines between the pin hole centers at the two ends of the rear upright posts at the two sides and the pin hole centers at the two ends of the middle upright post at the corresponding sides form a parallelogram, and fixing the positions of the rear upright posts at the two sides.
Step 6, aligning ear seat holes at the bottoms of the left upper seat and the right upper seat with pin holes at the front upright post and the rear upright post at the two sides, and connecting the ear seat holes through pin shafts; ear seat holes arranged at the bottom of the stand platform are aligned with pin holes at the middle upright post and the inclined upright post ends at two sides respectively, the centers of the holes are coaxially connected through pin shafts, and pin shaft is used for fixing pin hole positions of the upper left seat and the upper right seat corresponding to the stand platform.
The invention has the beneficial effects that:
(1) The invention mainly uses specific technological measures to control the center of the wellhead when the low-level assembly is in a state; according to the structural characteristics of the product, the alignment requirements of the centers of the upper and lower layer wellheads and the perpendicularity requirements of the front, middle and rear upright posts are realized by carrying out low-level assembly in the manufacturing process of the spiral lifting base and combining specific process control measures when the spiral lifting base is lifted to a working position.
(2) The invention can not only ensure the requirement of the high state of the base, but also reduce the processing difficulty and the safety risk, and has the characteristics of convenient operation, simple tool, safety and reliability, and can meet the requirement without depending on special equipment.
Drawings
FIG. 1 is a schematic view of a high-level assembly of a swing-up base in a control method of the present invention;
FIG. 2 is a schematic view of the vertical assembly of the diagonal columns and the center column in the control method of the present invention;
FIG. 3 is a schematic view of the assembly of the lower layer of the swing-up base in the control method of the present invention;
FIG. 4 is a side view of FIG. 1;
FIG. 5 is a schematic diagram of the assembly of the swing-up base in the control method of the present invention.
In the figure, the left-right seat is 1, the right stand is 2, the left-left seat is 3, the right front base is 4, the right rear base is 5, the left front base is 6, the left rear base is 7, the connecting frame is 8, the connecting beam is 9, the diagonal brace is 10, the front upright post is 11, the middle upright post is 12, the rear upright post is 13, and the diagonal upright post is 14.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The structure of the spiral lifting type base of the petroleum drilling machine is shown in fig. 1 and 2, and comprises a front upright post 11 connected with an upper layer and a lower layer, a rear upright post 13 of a middle upright post 12, the front upright post 11, the rear upright post 13 of the middle upright post 12 are equal in length, one end of an inclined upright post 14 is connected with a lower layer base, and the other end is connected with the middle upright post 12;
as shown in fig. 3, the lower-layer base comprises a right front base 4 and a right rear base 5 which are respectively positioned at two sides, a left front base 6 and a left rear base 7, the right front base 4 and the right rear base 5 are connected through a pin shaft, the left front base 6 and the left rear base 7 are connected through a pin shaft, a connecting frame 8 is connected between the right front base 4 and the left front base 6, a connecting beam 9 is connected between the right rear base 5 and the left rear base 7 at a position far away from the right front base 4 and the left front base 6, the side wall of the connecting beam 9 is fixedly connected with an ear plate, one end of an inclined strut 10 is connected with the ear plate of the side wall of the connecting beam 9 through a pin shaft, and the other end of the inclined strut is connected with the ear seat at the opposite side of the right rear base 5 and the left rear base 7 through a pin shaft;
as shown in fig. 4, the front upright comprises a left front upright and a right front upright, the middle upright comprises a left middle upright and a right middle upright, the rear upright comprises a left rear upright and a right rear upright, the oblique upright comprises a left oblique upright and a right oblique upright, the front uprights 11 and the rear uprights 13 on two sides are connected with the lugs on the upper surfaces of the right rear base 5 and the left rear base 7 through pin shafts, and the middle uprights 12 and the oblique uprights 14 on two sides are connected with the lugs on the opposite sides of the right rear base 5 and the left rear base 7 through pin shafts;
the other ends of the right front upright post and the right rear upright post are connected with an upper right seat 1 through a pin shaft, the connecting position is positioned at the bottom end of the upper right seat 1, the other ends of the left front upright post and the left rear upright post are connected with an upper left seat 3 through a pin shaft, the connecting position is positioned at the bottom end of the upper left seat 3, a stand table 2 is arranged between the upper right seat 1 and the upper left seat 3, and opposite sides of the stand table 2, the upper right seat 1 and the upper left seat 3 are connected with the upper right seat 1 and the upper left seat 3 through pin shafts; the ear seat at the bottom end of the stand 2 is connected with the right middle upright post, the left middle upright post, the right inclined upright post and the left inclined upright post through pin shafts.
The invention relates to a wellhead central control method for the low-level assembly state of a rotary lifting base of an oil rig, which comprises the following specific steps,
step 1, punching ear seats on a right rear base 5 and a left rear base 7 in an integral processing mode, and processing two ends of a left front upright post, a right front upright post, a left middle upright post, a right middle upright post, a left rear upright post, a right rear upright post, a left inclined upright post and a right inclined upright post into pin holes;
step 2, adjusting the centers of the corresponding pin shaft holes of the right rear base 5 and the left rear base 7 to be coaxial and equal in height, wherein the central connecting lines of any two groups of pin shaft holes are parallel, fixing the right rear base 5 and the left rear base 7 into a whole at the moment, aligning two ends of a connecting beam (9) with lug holes of the opposite sides of the right rear base 5 and the left rear base 7 far away from the front base, connecting by using a pin shaft, aligning one end of a diagonal brace (10) with lug holes of the side wall of the connecting beam (9), aligning the other end of the diagonal brace with lug holes of the opposite sides of the rear base, and connecting two ends of the diagonal brace (10) by using pin shafts; the right rear base 5 and the right front base 4 on two sides are connected through a pin shaft, the left rear base 7 and the left front base 6 are connected, and two ends of a connecting frame (8) are fixedly connected to the opposite side walls of the right front base 4 and the right front base;
step 3, connecting one ends of a right front upright post and a left front upright post with ear seats on the upper surfaces of a right rear base 5 and a left rear base 7 by using a pin shaft, connecting the ear seats close to the front base, connecting one ends of a right middle upright post and a left middle upright post with ear seats fixedly connected with the opposite sides of the right rear base 5 and the left rear base 7 by using a pin shaft, and finally connecting one ends of the right rear upright post and the left rear upright post with ear seats on the upper surfaces of the right rear base 5 and the left rear base 7 far away from the front base by using a pin shaft;
and 4, connecting one ends of the right inclined upright post and the left inclined upright post with lug seats on the opposite sides of the right rear base 5 and the left rear base 7 through pin shafts, connecting the lug seats to the rear upright post 13 on the opposite sides, and then placing the right inclined upright post and the left inclined upright post down towards the right middle upright post and the left middle upright post on the corresponding sides until one ends of the right inclined upright post and the left inclined upright post are respectively abutted to the side walls of the right middle upright post and the left middle upright post, fixedly connecting lug plates at the abutting positions of the right middle upright post and the left middle upright post corresponding to the right inclined upright post and the left inclined upright post, wherein the lug plates are used for being connected with the inclined upright posts 14, and the two ends of the right inclined upright post and the left inclined upright post are connected through pin shafts, so that the lug plates are convenient to detach and can play a role in stabilizing effect only when the upright posts are in a vertical state.
Step 5, as shown in fig. 5, dismantling the right oblique stand column and the left oblique stand column, placing the left front stand column, the right front stand column, the left middle stand column, the right middle stand column, the left rear stand column and the right rear stand column along the direction of the front base, enabling the device to be in a low-level assembly state, adjusting positions among the front stand columns 11, the middle stand column 12 and the rear stand column 13, fixing positions of the left front stand column and the right front stand column when the heights of the pin hole centers of the two ends are H, adjusting distances between the pin hole centers of the two ends of the left middle stand column and the right middle stand column and the pin hole centers of the two ends of the corresponding left front stand column and the right front stand column, enabling connecting lines between the pin hole centers of the two ends of the left middle stand column and the two ends of the pin hole centers of the two ends of the corresponding left front stand column and the right front stand column to form a parallelogram, and then fixing positions of the left middle stand column and the right middle stand column; the distances between the pin hole centers at the two ends of the left rear upright post and the right rear upright post and the pin hole centers at the two ends of the left middle upright post and the right middle upright post at the corresponding sides are adjusted, so that the connecting lines between the pin hole centers at the two ends of the left rear upright post and the right rear upright post and the pin hole centers at the two ends of the left middle upright post and the right middle upright post at the corresponding sides form a parallelogram, and the positions of the left rear upright post and the right rear upright post are fixed;
the low-level assembly is carried out in the manufacturing process of the spiral lifting base, and the alignment requirement of the centers of the upper and lower layer wellheads and the perpendicularity requirement of the front, middle and rear upright posts on the two sides are realized when the spiral lifting base is lifted to the working position by combining specific process control measures.
Step 6, after the upright post positions are adjusted in the step 5, aligning the ear seat holes at the bottoms of the right upper seat 1 and the left upper seat 3 with the pin holes at the ends of the left front upright post, the right front upright post, the left rear upright post and the right rear upright post at the two sides, and connecting the ear seat holes through pin shafts; ear seat holes arranged at the bottom of the standing stand 2 are aligned with pin holes at the ends of the left middle upright post, the right middle upright post, the left inclined upright post and the right inclined upright post at two sides respectively, the centers of the holes are coaxially connected through pin shafts, and pin shafts are used for fixing pin hole positions of the right upper seat 1 and the left upper seat 3 corresponding to the standing stand 2;
at this time, the offset distance between the wellhead center a of the stand 2 and the lower wellhead center a ' is L, when the pin hole center heights H of the two ends of the front uprights 11 at the two sides are increased, the offset distance between the wellhead center a and the lower wellhead center a ' is L, and conversely, when the offset distance between the wellhead center a and the lower wellhead center a ' is L, the pin hole center heights H of the two ends of the front uprights at the two sides are gradually decreased;
and 7, lifting the left front upright post, the right front upright post, the left middle upright post, the right middle upright post, the left rear upright post and the right rear upright post on two sides to keep vertical, so that the central projections of the upper and lower layers of the wellhead are overlapped, the processing difficulty and the safety risk are reduced, and the device is convenient to operate, simple in tool, safe and reliable, and can meet the product quality requirement without depending on special equipment.
The assembling method can realize the alignment requirement of the centers of the upper and lower layer wellhead and the perpendicularity requirement of each upright post of the front, middle and rear layers when the base is lifted to the working position.
Claims (5)
1. The central control method for the wellhead of the low-level assembly state of the rotary lifting base of the petroleum drilling machine is characterized by comprising the following steps of:
step 1, punching lugs on rear bases at two sides in an integral processing mode, and processing two ends of a front upright post (11), a middle upright post (12), a rear upright post (13) and an inclined upright post (14) at two sides into pin holes;
step 2, adjusting the rear bases on two sides to be coaxial and equal in height with the centers of the corresponding pin shaft holes, fixing the rear bases into a whole at the moment, connecting the rear bases on two sides with the front bases on the corresponding sides through pin shafts, and fixedly connecting two ends of a connecting frame (8) to opposite side walls of the front bases on two sides;
step 3, connecting one end of the front upright posts (11) on two sides with the lug seats on the upper surfaces of the corresponding side rear bases by using pin shafts, connecting the lug seats close to the front bases, connecting one end of the middle upright post (12) on two sides with the lug seats on the corresponding side rear bases by using pin shafts, connecting the lug seats on the opposite sides of the two side rear bases, and finally connecting one end of the rear upright posts (13) on two sides with the upper surfaces of the corresponding side rear bases by using pin shafts, wherein the connecting positions are located far away from the lug seats of the front bases;
step 4, connecting one ends of the oblique stand columns (14) at two sides with the lug seats of the rear base at the corresponding sides through pin shafts, connecting the lug seats at the opposite sides of the rear base at two sides and close to the positions of the rear stand columns (13), and connecting the other ends of the oblique stand columns with the middle stand columns (12) in a pin joint mode;
step 5, dismantling two side inclined upright posts (14), reversing the front upright posts (11), the middle upright post (12) and the rear upright post (13) on two sides to the direction of the front base, and adjusting the positions among the front upright posts (11), the middle upright post (12) and the rear upright post (13) on two sides to form a parallelogram;
step 6, after the upright post positions are adjusted in the step 5, connecting the upper base with the other ends of the front upright posts (11), the middle upright posts (12), the inclined upright posts (14) and the rear upright posts (13) at two sides through pin shafts respectively;
and 7, lifting the front upright post (11), the middle upright post (12) and the rear upright post (13) to keep vertical, so that the central projections of the upper and lower layer wellhead are overlapped.
2. The wellhead central control method for the low-level assembly state of the rotary lifting base of the petroleum drilling machine according to claim 1, wherein in the step 2, the rear base is connected into a whole, specifically, two ends of the connecting beam (9) are aligned with lug holes on opposite sides of the rear base on two sides far away from the front base, then the two ends of the inclined strut (10) are connected by a pin shaft, one end of the inclined strut is aligned with lug holes on the side wall of the connecting beam (9), the other end of the inclined strut is aligned with lug holes on opposite sides of the rear base on two sides, and two ends of the inclined strut (10) are also connected by a pin shaft.
3. The central wellhead control method for the low-level assembly state of the rotary lifting type base of the petroleum drilling machine according to claim 1, wherein in the step 4, the two side inclined upright posts (14) are specifically connected with the corresponding side middle upright post (12), the two side inclined upright posts (14) are put down towards the corresponding side middle upright post (12) until one end of each inclined upright post (14) is abutted against the side wall of the middle upright post (12), and an ear plate is fixedly connected with the corresponding inclined upright post (14) at the abutting position of the side wall of the middle upright post (12) and is used for being connected with the inclined upright post (14).
4. The central control method for the wellhead of the low-level assembly state of the rotary lifting type base of the petroleum drilling machine according to claim 1, wherein the positions of the front uprights (11), the middle uprights (12) and the rear uprights (13) on the two sides in the step 5 meet the parallelogram principle, specifically, when the front uprights (11) on the two sides are placed to the lowest position and the central heights of the pin holes on the two ends are H, the positions of the front uprights (11) on the two sides are fixed, then the distance between the central pin holes on the two ends of the middle uprights (12) on the two sides and the central pin holes on the two ends of the front uprights (11) on the two sides is adjusted, and when the central pin holes on the two ends of the middle uprights (12) on the two sides and the central pin holes on the two ends of the corresponding front uprights (11) on the two sides are connected to form a parallelogram; and then the distances between the pin hole centers at the two ends of the rear upright posts (13) at the two sides and the pin hole centers at the two ends of the middle upright post (12) are adjusted, so that the pin hole centers at the two ends of the rear upright posts (13) at the two sides and the pin hole centers at the two ends of the middle upright post (12) at the corresponding sides are connected to form a parallelogram, and the positions of the rear upright posts (13) at the two sides are fixed.
5. The central control method for the wellhead of the low-level assembly state of the rotary lifting base of the petroleum drilling machine according to claim 1, wherein the step 6 is specifically to align the ear seat holes at the bottoms of the upper right seat (1) and the upper left seat (3) with the end pin holes of the front upright post (11) and the rear upright post (13) at the two sides, and connect the ear seat holes through pin shafts; ear seat holes arranged at the bottom of the standing stand (2) are aligned with pin holes at the ends of the middle vertical columns (12) and the inclined vertical columns (14) at the two sides respectively, the hole centers are coaxially connected through pin shafts, and pin holes corresponding to the upper right seat (1) and the upper left seat (3) and the standing stand (2) are fixed through pin shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946589.9A CN117552717A (en) | 2022-08-05 | 2022-08-05 | Wellhead central control method for low-level assembly state of rotary lifting type base of petroleum drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946589.9A CN117552717A (en) | 2022-08-05 | 2022-08-05 | Wellhead central control method for low-level assembly state of rotary lifting type base of petroleum drilling machine |
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| Publication Number | Publication Date |
|---|---|
| CN117552717A true CN117552717A (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210946589.9A Pending CN117552717A (en) | 2022-08-05 | 2022-08-05 | Wellhead central control method for low-level assembly state of rotary lifting type base of petroleum drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117552717A (en) |
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2022
- 2022-08-05 CN CN202210946589.9A patent/CN117552717A/en active Pending
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