Efficient tie-back device for wellhead production pipeline of offshore oil and gas exploitation platform

Abstract

The utility model discloses an efficient tie-back device for a wellhead production pipeline of an offshore oil and gas exploitation platform. Comprising a tubing head reducing cross-shaped telescopic base. The first supporting seat is arranged in the center of the tubing head reducing cross-shaped telescopic base; a first insertion part matched with the first cylindrical slot is arranged at the lower end of the first upright post; the first locking mechanism is arranged between the first cylindrical slot and the first insertion part; the right end of the micrometer scale screw extends into the first longitudinal sliding groove. Second insertion parts are arranged at the lower ends of the second upright posts; a second cylindrical slot matched with the second insertion part is formed in the center of the second supporting seat; the fourth locking mechanism is arranged between the second cylindrical slot and the second insertion part; the utility model discloses an oil nozzle reducing cross-shaped telescopic base. And a pair of laser angle gauges. The oil nozzle lower flange positioning device has the advantages that the oil nozzle lower flange can be positioned, and pipeline tie-back work can be conveniently and instantly carried out.

Description

Technical Field

[0001] This utility model relates to the field of offshore oil and gas exploration platform technology, and in particular to a high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms. Background Technology

[0002] Traditional wellhead commissioning requires the sequential installation of production (gas) trees, followed by alignment with the nozzle coordinates of the repositioned trees before downstream production pipeline flange welding can proceed. If the production (gas) tree cannot be properly positioned, subsequent pipeline reconnection is also restricted, severely impacting project progress. Defects in the production (gas) tree or substandard pipeline welding can compromise project timeliness, manifesting in several ways: 1) A rigid sequence in the construction process. Traditional wellhead reconnection requires pipeline reconnection only after the production (gas) tree installation is complete, meaning a "fixed process topology." If the production (gas) tree delivery is delayed or affected by weather and sea conditions, preventing timely transport to the platform, subsequent pipeline reconnection will inevitably be postponed, exceeding the overall project timeline. 2) Uncertainty regarding pipeline reconnection quality. Substandard weld quality requiring rework affects single-well handover time. 3) Traditional construction methods are inefficient, time-consuming, and exhibit weak "entropy-increasing synergy." Under current technological conditions, it is impossible to achieve the high efficiency of "simultaneous construction and operation."

[0003] Therefore, a high-efficiency reconnection device for wellhead production pipelines on offshore oil and gas exploration platforms, capable of locating the lower flange of the nozzle and facilitating immediate pipeline reconnection work, has become the key to solving the problem. Utility Model Content

[0004] The purpose of this utility model is to provide an efficient reconnection device for wellhead production pipelines on offshore oil and gas exploration platforms, which can position the lower flange of the oil nozzle to facilitate the immediate commencement of pipeline reconnection work.

[0005] To achieve the above objectives, the present invention adopts the following technical solution, including:

[0006] Oil pipe head reducing cross telescopic base, which is used for detachable connection with oil pipe head flange;

[0007] A first support base is located at the center of the tubing head reducing cross telescopic base; a first cylindrical slot is provided at the upper center of the first support base;

[0008] The first column has a first insertion part at its lower end that is adapted to the first cylindrical slot; and a first longitudinal groove is provided on the upper part of the first column along the length direction.

[0009] A first locking mechanism is disposed between the first cylindrical slot and the first insertion part for locking the first cylindrical slot and the first insertion part;

[0010] The micrometer scale screw is horizontally arranged, and the right end of the micrometer scale screw extends into the first longitudinal slide groove and is locked by the second locking mechanism.

[0011] The second column has a second insertion part at its lower end; the upper part of the second column has a second longitudinal sliding groove arranged along the length direction; the second longitudinal sliding groove allows the left end of the micrometer scale screw to extend into, and is locked by a third locking mechanism.

[0012] The second support base has a second cylindrical slot at its center that is adapted to the second insertion part;

[0013] A fourth locking mechanism is disposed between the second cylindrical slot and the second insertion part for locking the second cylindrical slot and the second insertion part;

[0014] The oil nozzle reducing cross telescopic base is set on the outer periphery of the second support base to position the lower flange of the oil nozzle, so as to facilitate the immediate commencement of pipeline reconnection work;

[0015] A pair of laser angle gauges are respectively installed in the middle of the first column and the second column;

[0016] The first cylindrical slot and the first insertion part are respectively provided with an outwardly extending first lower base plate and a first upper base plate at their edges; the second cylindrical slot and the second insertion part are respectively provided with an outwardly extending second lower base plate and a second upper base plate at their edges; 360° circumferential lines are provided on the first upper base plate, the first lower base plate, the second upper base plate and the second lower base plate; and scale lines are provided on the first longitudinal groove and the second longitudinal groove.

[0017] Preferably, the tubing head reducing cross telescopic base includes:

[0018] Four first support rods are arranged radially in a cross shape around the outer periphery of the first support base and locked to the first support base by a fifth locking mechanism; a first adjustment groove is provided on the first support rod along its length, and a movable first adjustment bolt is provided in the first adjustment groove; the first adjustment bolt cooperates with the first adjustment nut to achieve a detachable connection with the oil pipe head flange.

[0019] Preferably, the fifth locking mechanism includes: a first periphery extending outward at the lower part of the first support base, and a first annular limiting groove at the upper end surface of the first periphery; a first slot for clamping the first periphery at the inner end of the first support rod, and a vertical fifth threaded hole at the inner end of the first support rod, the lower end of the fifth threaded hole communicating with the first slot; and a fifth locking pin passing through the fifth threaded hole and inserted into the first annular limiting groove to lock the first support rod to the first support base.

[0020] Preferably, the first locking mechanism includes:

[0021] A first threaded hole is radially disposed on the first cylindrical slot;

[0022] A first locking pin passes through the first threaded hole and abuts against the first insertion part to lock the first cylindrical slot and the first insertion part.

[0023] Preferably, the second locking mechanism includes:

[0024] The third longitudinal slide groove is arranged along the length direction on the upper part of the first column and is orthogonal to the first longitudinal slide groove;

[0025] A transverse groove is horizontally arranged on the micrometer scale screw and communicates with the third longitudinal sliding groove.

[0026] The second locking screw passes through the third longitudinal groove and the transverse groove, and engages with the second locking nut to lock the right end of the micrometer scale screw to the first column.

[0027] Preferably, the third locking mechanism includes:

[0028] A fourth longitudinal groove is provided on the upper part of the second column along the length direction, and is orthogonal to the second longitudinal groove, and communicates with the transverse groove;

[0029] The third locking screw passes through the fourth longitudinal groove and transverse groove and engages with the third locking nut to lock the right end of the micrometer scale screw to the second column.

[0030] Preferably, the fourth locking mechanism includes:

[0031] A fourth threaded hole is radially disposed on the second cylindrical slot;

[0032] A fourth locking pin passes through the fourth threaded hole and abuts against the second insertion part to lock the second cylindrical slot and the second insertion part.

[0033] Preferably, the variable diameter cross telescopic base for the oil nozzle includes:

[0034] Four second support rods are arranged radially in a cross shape around the outer periphery of the second support base and locked to the second support base by a sixth locking mechanism; a second adjustment groove is provided on the second support rod along its length, and a movable second adjustment bolt is provided in the second adjustment groove; the second adjustment bolt cooperates with the second adjustment nut to achieve a detachable connection with the oil nozzle flange.

[0035] Preferably, the sixth locking mechanism includes: a second periphery extending outward at the lower part of the second support base, and a second annular limiting groove at the upper end surface of the second periphery; a second slot for clamping the second periphery at the inner end of the second support rod, and a vertical sixth threaded hole at the inner end of the second support rod, the lower end of the sixth threaded hole communicating with the second slot; and a sixth locking pin passing through the sixth threaded hole and inserted into the second annular limiting groove to lock the second support rod to the second support base.

[0036] Preferably, a butterfly-shaped handle is provided at the upper end of the first, second, third, fourth, fifth, and sixth locking pins.

[0037] The beneficial effects of this utility model are: it can locate the lower flange of the oil nozzle, which facilitates the immediate commencement of pipeline reconnection work. Attached Figure Description

[0038] Figure 1 This is a perspective view of an efficient reconnection device for wellhead production pipelines on offshore oil and gas exploration platforms, according to this utility model.

[0039] Figure 2 This is an exploded view of the lower part of the variable diameter cross telescopic base, the first support base, and the first column of the oil pipe head in this utility model.

[0040] Figure 3 This is an exploded view of the variable diameter cross telescopic base for the oil nozzle, the second support base, and the lower part of the second column in this utility model. Detailed Implementation

[0041] The utility model will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0042] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0043] like Figure 1-3 As shown, the present invention provides a high-efficiency reconnection device 1 for wellhead production pipelines on offshore oil and gas exploration platforms, comprising:

[0044] A variable diameter cross-shaped telescopic base 110 for detachably connecting to a tubing head flange; preferably, the tubing head variable diameter cross-shaped telescopic base 110 includes: four first support rods 111 arranged radially in a cross shape around the outer periphery of the first support base 120, and locked to the first support base 120 by a fifth locking mechanism; a first adjusting groove 112 is provided on the first support rods 111 along the length direction, and a movable first adjusting bolt 113 is provided in the first adjusting groove 112; the first adjusting bolt 113 cooperates with the first adjusting nut 114 to achieve detachable connection with the tubing head flange. As a further preferred embodiment, the fifth locking mechanism includes: a first periphery 123 extending outward at the lower part of the first support base 120, and a first annular limiting groove 124 on the upper end surface of the first periphery 123; a first slot 115 for clamping the first periphery 123 is provided at the inner end of the first support rod 111, and a vertical fifth threaded hole is provided at the inner end of the first support rod 111, the lower end of the fifth threaded hole being connected to the first slot 115; and a fifth locking pin 195 passing through the fifth threaded hole and inserted into the first annular limiting groove 124 to lock the first support rod 111 and the first support base 120.

[0045] The first support base 120 is located at the center of the oil pipe head variable diameter cross telescopic base 110; a first cylindrical slot 121 is provided at the upper center of the first support base 120.

[0046] The first column 130 has a first insertion part 131 at its lower end that is adapted to the first cylindrical slot 121; and a first longitudinal groove 132 is provided on the upper part of the first column 130 along the length direction.

[0047] A first locking mechanism is disposed between the first cylindrical slot 121 and the first insertion part 131 for locking the first cylindrical slot 121 and the first insertion part 131. Preferably, the first locking mechanism includes: a first threaded hole radially disposed on the first cylindrical slot 121; and a first locking pin 191 passing through the first threaded hole and abutting against the first insertion part 131 for locking the first cylindrical slot 121 and the first insertion part 131.

[0048] A micrometer scale screw 140 is horizontally arranged, with its right end extending into the first longitudinal groove 132 and locked by a second locking mechanism. Preferably, the second locking mechanism includes: a third longitudinal groove 134, which is arranged along the length direction on the upper part of the first column 130 and orthogonal to the first longitudinal groove 132; a transverse groove 141, which is horizontally arranged on the micrometer scale screw 140 and communicates with the third longitudinal groove 134; and a second locking screw 192, which passes through the third longitudinal groove 134 and the transverse groove 141 and cooperates with a second locking nut to lock the right end of the micrometer scale screw 140 to the first column 130.

[0049] The second column 150 has a second insertion part 151 at its lower end; a second longitudinal groove 152 is provided on the upper part of the second column 150 along the length direction; the second longitudinal groove 152 allows the left end of the micrometer scale screw 140 to extend into it and be locked by a third locking mechanism; preferably, the third locking mechanism includes: a fourth longitudinal groove 154, which is provided on the upper part of the second column 150 along the length direction and is orthogonal to the second longitudinal groove 152 and communicates with the transverse groove 141; a third locking screw 193, which passes through the fourth longitudinal groove 154 and the transverse groove 141 and cooperates with the third locking nut to lock the right end of the micrometer scale screw 140 to the second column 150.

[0050] The second support base 160 has a second cylindrical slot 161 at its center that is adapted to the second insertion part 151;

[0051] A fourth locking mechanism is disposed between the second cylindrical slot 161 and the second insertion portion 151 for locking the second cylindrical slot 161 and the second insertion portion 151; preferably, the fourth locking mechanism includes: a fourth threaded hole radially disposed on the second cylindrical slot 161; and a fourth locking pin 194 passing through the fourth threaded hole and abutting against the second insertion portion 151 for locking the second cylindrical slot 161 and the second insertion portion 151.

[0052] A variable-diameter cross-shaped telescopic base 170 for the oil nozzle is disposed on the outer periphery of the second support base 160 and is used to position the lower flange of the oil nozzle, facilitating immediate pipeline reconnection. Preferably, the variable-diameter cross-shaped telescopic base 170 includes four second support rods 171 arranged radially in a cross shape on the outer periphery of the second support base 160 and locked to the second support base 160 by a sixth locking mechanism. A second adjusting groove 172 is provided along the length of each second support rod 171, and a movable second adjusting bolt 173 is provided in the second adjusting groove 172. The second adjusting bolt 173 cooperates with a second adjusting nut 174 to achieve a detachable connection with the oil nozzle flange. As a further preferred embodiment, the sixth locking mechanism includes: a second periphery 163 extending outward at the lower part of the second support base 160, and a second annular limiting groove 164 at the upper end surface of the second periphery 163; a second slot 175 for clamping the second periphery 163 is provided at the inner end of the second support rod 171, and a vertical sixth threaded hole is provided at the inner end of the second support rod 171, the lower end of the sixth threaded hole being connected to the second slot 175; and a sixth locking pin 196 passing through the sixth threaded hole and inserted into the second annular limiting groove 164 to lock the second support rod 171 and the second support base 160.

[0053] A pair of laser angle gauges 180 are respectively installed in the middle of the first column 130 and the second column 150;

[0054] Specifically, a first lower base plate 122 and a first upper base plate 133 extending outward are respectively provided on the edges of the first cylindrical slot 121 and the first insertion part 131; a second lower base plate 162 and a second upper base plate 153 extending outward are respectively provided on the edges of the second cylindrical slot 161 and the second insertion part 151; 360° circumferential lines are respectively provided on the first upper base plate 133, the first lower base plate 122, the second upper base plate 153 and the second lower base plate 162; and scale lines are provided on the first longitudinal slide groove and the second longitudinal slide groove.

[0055] During use, first, adjust the tubing head reducing cross-type telescopic base 110 according to the actual tubing head flange size and connect it to the tubing head flange. Then, adjust the first support base 120 according to the current platform bow direction, ensuring the "0" mark on the first lower base plate 122 aligns with the platform bow direction, and lock it using the fifth locking mechanism. Next, adjust the first column 130 according to the angle between the tree to be installed and the platform, ensuring the angle between the "0" mark on the first upper base plate 133 and the "0" mark on the first lower base plate 122 equals the angle between the tree to be installed and the platform, and lock it using the first locking mechanism. Then, adjust the height of the micrometer screw 140 and the distance between the second column 150 and the first column 130 according to the actual dimensions of the tree, and lock them using the second and third locking mechanisms respectively. Throughout this process, a pair of laser angle gauges 180 ensure the horizontal and vertical alignment of the micrometer screw 140. Next, based on the bolt hole positions of the lower flange of the nozzle, adjust the angle between the "0" mark on the second lower base plate 162 and the "0" mark on the second upper base plate 153, and lock it using the fourth locking mechanism. Adjust the radius of the variable diameter cross-telescopic base 170 according to the different sizes of the lower flanges of the nozzle and the bolt hole positions, and lock it using the sixth locking mechanism. The position of the variable diameter cross-telescopic base 170 is the coordinate of the lower flange of the nozzle, allowing for immediate pipeline reconnection.

[0056] In another embodiment, the tubing head reducing cross telescopic base 110 includes: four first support rods 111 arranged radially in a cross shape around the outer periphery of the first support base 120 and locked to the first support base 120 by a fifth locking mechanism; a first adjusting groove 112 is provided on the first support rods 111 along the length direction, and a movable first adjusting bolt 113 is provided in the first adjusting groove 112; the first adjusting bolt 113 cooperates with the first adjusting nut 114 to achieve a detachable connection with the tubing head flange.

[0057] In another embodiment, the fifth locking mechanism includes: a first periphery 123 extending outward at the lower part of the first support base 120, and a first annular limiting groove 124 at the upper end surface of the first periphery 123; a first slot 115 for clamping the first periphery 123 is provided at the inner end of the first support rod 111, and a vertical fifth threaded hole is provided at the inner end of the first support rod 111, the lower end of the fifth threaded hole communicating with the first slot 115; and a fifth locking pin 195 passing through the fifth threaded hole and inserted into the first annular limiting groove 124 to lock the first support rod 111 and the first support base 120.

[0058] In another embodiment, the first locking mechanism includes: a first threaded hole radially disposed on the first cylindrical slot 121; and a first locking pin 191 passing through the first threaded hole and abutting against the first insertion portion 131 for locking the first cylindrical slot 121 and the first insertion portion 131.

[0059] In another embodiment, the second locking mechanism includes: a third longitudinal groove 134 disposed along the length direction on the upper part of the first column 130 and orthogonally disposed to the first longitudinal groove 132; a transverse groove 141 disposed horizontally on the micrometer scale screw 140 and communicating with the third longitudinal groove 134; and a second locking screw 192 passing through the third longitudinal groove 134 and the transverse groove 141 and cooperating with a second locking nut to lock the right end of the micrometer scale screw 140 to the first column 130.

[0060] In another embodiment, the third locking mechanism includes: a fourth longitudinal groove 154, which is disposed on the upper part of the second column 150 along the length direction and orthogonal to the second longitudinal groove 152, and communicates with the transverse groove 141; a third locking screw 193, which passes through the fourth longitudinal groove 154 and the transverse groove 141, and cooperates with the third locking nut to lock the right end of the micrometer scale screw 140 to the second column 150.

[0061] In another embodiment, the fourth locking mechanism includes: a fourth threaded hole radially disposed on the second cylindrical slot 161; and a fourth locking pin 194 passing through the fourth threaded hole and abutting against the second insertion portion 151 for locking the second cylindrical slot 161 and the second insertion portion 151.

[0062] In another embodiment, the variable diameter cross telescopic base 170 for the oil nozzle includes: four second support rods 171 arranged radially in a cross shape around the outer periphery of the second support base 160 and locked to the second support base 160 by a sixth locking mechanism; a second adjusting groove 172 is provided on the second support rods 171 along the length direction, and a movable second adjusting bolt 173 is provided in the second adjusting groove 172; the second adjusting bolt 173 cooperates with the second adjusting nut 174 to achieve a detachable connection with the oil nozzle flange.

[0063] In another embodiment, the sixth locking mechanism includes: a second periphery 163 extending outward at the lower part of the second support base 160, and a second annular limiting groove 164 on the upper end surface of the second periphery 163; a second slot 175 for clamping the second periphery 163 is provided at the inner end of the second support rod 171, and a vertical sixth threaded hole is provided at the inner end of the second support rod 171, the lower end of the sixth threaded hole communicating with the second slot 175; and a sixth locking pin 196 passing through the sixth threaded hole and inserted into the second annular limiting groove 164 to lock the second support rod 171 and the second support base 160.

[0064] In another embodiment, a butterfly-shaped handle is provided at the upper end of the first locking pin 191, the second locking pin 192, the third locking pin 193, the fourth locking pin 194, the fifth locking pin 195 and the sixth locking pin 196 respectively.

[0065] In summary, this utility model provides an efficient reconnection device 1 for wellhead production pipelines on offshore oil and gas exploration platforms, which can position the lower flange of the oil nozzle, facilitating the immediate commencement of pipeline reconnection work.

[0066] 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 the illustrations shown and described herein.

Claims

1. A high-efficiency reconnection device for wellhead production pipelines on offshore oil and gas exploration platforms, characterized in that, include: Oil pipe head reducing cross telescopic base, which is used for detachable connection with oil pipe head flange; A first support base is located at the center of the tubing head reducing cross telescopic base; a first cylindrical slot is provided at the upper center of the first support base. The first column has a first insertion part at its lower end that is adapted to the first cylindrical slot; and a first longitudinal groove is provided on the upper part of the first column along the length direction. A first locking mechanism is disposed between the first cylindrical slot and the first insertion part for locking the first cylindrical slot and the first insertion part; The micrometer scale screw is horizontally arranged, and the right end of the micrometer scale screw extends into the first longitudinal slide groove and is locked by the second locking mechanism. The second column has a second insertion part at its lower end; the upper part of the second column has a second longitudinal sliding groove arranged along the length direction; the second longitudinal sliding groove allows the left end of the micrometer scale screw to extend into, and is locked by a third locking mechanism. The second support base has a second cylindrical slot at its center that is adapted to the second insertion part; A fourth locking mechanism is disposed between the second cylindrical slot and the second insertion part for locking the second cylindrical slot and the second insertion part; The variable diameter cross telescopic base for the oil nozzle is located on the outer periphery of the second support base and is used to position the lower flange of the oil nozzle, so as to facilitate the immediate commencement of pipeline reconnection work. A pair of laser angle gauges are respectively installed in the middle of the first column and the second column; The first cylindrical slot and the first insertion part are respectively provided with an outwardly extending first lower base plate and a first upper base plate at their edges; the second cylindrical slot and the second insertion part are respectively provided with an outwardly extending second lower base plate and a second upper base plate at their edges; 360° circumferential lines are provided on the first upper base plate, the first lower base plate, the second upper base plate and the second lower base plate; and scale lines are provided on the first longitudinal groove and the second longitudinal groove.

2. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 1, characterized in that, The variable diameter cross telescopic base for the tubing head includes: Four first support rods are arranged radially in a cross shape around the outer periphery of the first support base and locked to the first support base by a fifth locking mechanism; a first adjustment groove is provided on the first support rod along its length, and a movable first adjustment bolt is provided in the first adjustment groove; the first adjustment bolt cooperates with the first adjustment nut to achieve a detachable connection with the oil pipe head flange.

3. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 2, characterized in that, The fifth locking mechanism includes: a first periphery extending outward at the lower part of the first support base, and a first annular limiting groove at the upper end surface of the first periphery; a first slot for clamping the first periphery at the inner end of the first support rod, and a vertical fifth threaded hole at the inner end of the first support rod, the lower end of the fifth threaded hole communicating with the first slot; and a fifth locking pin passing through the fifth threaded hole and inserted into the first annular limiting groove to lock the first support rod to the first support base.

4. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 3, characterized in that, The first locking mechanism includes: A first threaded hole is radially disposed on the first cylindrical slot; A first locking pin passes through the first threaded hole and abuts against the first insertion part to lock the first cylindrical slot and the first insertion part.

5. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 4, characterized in that, The second locking mechanism includes: The third longitudinal slide groove is arranged along the length direction on the upper part of the first column and is orthogonal to the first longitudinal slide groove; A transverse groove is horizontally arranged on the micrometer scale screw and communicates with the third longitudinal sliding groove. The second locking screw passes through the third longitudinal groove and the transverse groove, and engages with the second locking nut to lock the right end of the micrometer scale screw to the first column.

6. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 5, characterized in that, The third locking mechanism includes: A fourth longitudinal groove is provided on the upper part of the second column along the length direction, and is orthogonal to the second longitudinal groove, and communicates with the transverse groove; The third locking screw passes through the fourth longitudinal groove and transverse groove and engages with the third locking nut to lock the right end of the micrometer scale screw to the second column.

7. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 6, characterized in that, The fourth locking mechanism includes: A fourth threaded hole is radially disposed on the second cylindrical slot; A fourth locking pin passes through the fourth threaded hole and abuts against the second insertion part to lock the second cylindrical slot and the second insertion part.

8. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 7, characterized in that, The variable diameter cross telescopic base for the oil nozzle includes: Four second support rods are arranged radially in a cross shape around the outer periphery of the second support base and locked to the second support base by a sixth locking mechanism; a second adjustment groove is provided on the second support rod along its length, and a movable second adjustment bolt is provided in the second adjustment groove; the second adjustment bolt cooperates with the second adjustment nut to achieve a detachable connection with the oil nozzle flange.

9. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas exploration platforms according to claim 8, characterized in that, The sixth locking mechanism includes: a second periphery extending outward at the lower part of the second support base, and a second annular limiting groove at the upper end surface of the second periphery; a second slot for clamping the second periphery at the inner end of the second support rod, and a vertical sixth threaded hole at the inner end of the second support rod, the lower end of the sixth threaded hole communicating with the second slot; and a sixth locking pin passing through the sixth threaded hole and inserted into the second annular limiting groove to lock the second support rod to the second support base.

10. The high-efficiency reconnection device for wellhead production pipelines of offshore oil and gas production platforms according to claim 9, characterized in that: A butterfly-shaped handle is provided at the upper end of the first, second, third, fourth, fifth, and sixth locking pins.

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