CN114278223A - Surface layer well building device for deepwater natural gas hydrate exploitation - Google Patents
Surface layer well building device for deepwater natural gas hydrate exploitation Download PDFInfo
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- CN114278223A CN114278223A CN202111667995.3A CN202111667995A CN114278223A CN 114278223 A CN114278223 A CN 114278223A CN 202111667995 A CN202111667995 A CN 202111667995A CN 114278223 A CN114278223 A CN 114278223A
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Abstract
The invention provides a surface well building device for deepwater natural gas hydrate exploitation, which comprises: a pipe string; the connecting pipe body is fixedly connected with one end of the pipe column; the supporting component is movably sleeved on the connecting pipe body and used for supporting the stratum; the baffle assembly is positioned on one side of the support assembly, which is far away from the pipe column, and has a closed state and an expanded state; in the closed state, the baffle plate assembly is folded on the periphery of the connecting pipe body; in an unfolding state, the baffle component is unfolded outwards along the radial direction of the connecting pipe body, and the projection area of the baffle component in the unfolding state along the axial direction of the connecting pipe body is larger than that in a closing state; the baffle assembly is in transmission connection with the supporting assembly, and under the condition that the supporting assembly moves towards the direction far away from the pipe column relative to the connecting pipe body, the baffle assembly can be switched to the unfolding state from the closing state. The surface well building device provided by the invention can prevent natural gas from crystallizing at a well mouth, and improves the well building working efficiency.
Description
Technical Field
The invention relates to the technical field of natural gas hydrate exploitation, in particular to a surface layer well building device for deepwater natural gas hydrate exploitation.
Background
The natural gas hydrate is a solid compound formed by natural gas and water under the conditions of low temperature and high pressure, and is mainly distributed in deep sea areas.
At present, because cement releases heat during well cementation, shallow hydrates are decomposed, when a well is built by using a surface well building device in the prior art, gas is easy to escape from the interface of a surface conduit and a mud line, a large amount of hydrates are generated on the outer wall of a high-pressure well head and a low-pressure well head, a blowout preventer cannot be separated from the well head in the well drilling process, the normal work of an underwater production system is influenced, and the safe and efficient development and utilization of deep-water natural gas hydrates are also influenced.
Disclosure of Invention
The invention provides a surface layer well building device for deepwater natural gas hydrate exploitation, which is used for solving the technical problems that in the prior art, the surface layer well building operation risk is high, and gas is easy to flow upwards.
The invention provides a surface well building device for deepwater natural gas hydrate exploitation, which comprises:
a pipe string;
the connecting pipe body is fixedly connected with one end of the pipe column;
the supporting component is movably sleeved on the connecting pipe body and is used for supporting the stratum;
a flapper assembly located on a side of the support assembly remote from the tubing string, the flapper assembly having a closed state and an expanded state; in the closed state, the baffle plate assembly is folded on the periphery of the connecting pipe body; in the unfolded state, the baffle assembly is unfolded outwards along the radial direction of the connecting pipe body, and the projection area of the baffle assembly in the unfolded state along the axial direction of the connecting pipe body is larger than that in the closed state;
the baffle assembly is in transmission connection with the support assembly, and under the condition that the support assembly moves relative to the connecting pipe body in the direction far away from the pipe column, the baffle assembly can be switched from the closed state to the unfolded state.
According to the surface well construction device provided by the embodiment of the invention, the baffle plate assembly comprises a first transmission piece and a plurality of baffle plates;
the baffle is connected to the connecting pipe body in a swinging mode and can swing along the axial direction of the connecting pipe body;
one end of the first transmission piece is rotatably connected to the surface of the baffle, the other end of the first transmission piece is in transmission connection with the supporting assembly, and the first transmission piece is used for driving the baffle to swing in the direction far away from the connecting pipe body under the condition that the supporting assembly moves in the direction far away from the pipe column relative to the connecting pipe body.
According to the surface well building device provided by the embodiment of the invention, the surface of the baffle plate is provided with the accommodating groove which is used for accommodating the first transmission piece when the baffle plate assembly is in the closed state.
According to the surface well construction device provided by the embodiment of the invention, the first transmission piece is of a telescopic structure and can be telescopic along the length direction of the first transmission piece.
According to the surface well construction device provided by the embodiment of the invention, the surface well construction device further comprises a sliding block, and the sliding block is movably sleeved on the connecting pipe body and is positioned between the supporting component and the baffle component;
the first transmission piece comprises a first cylinder body and a first piston rod, the first piston rod is movably inserted into the first cylinder body and can move along the axial direction of the first piston rod, the first cylinder body is rotatably connected to the sliding block, and one end of the first piston rod is rotatably connected to the surface of the baffle;
the outer peripheral surface of the connecting pipe body is convexly provided with a connecting part, the surface layer well building device further comprises a second transmission part, the second transmission part comprises a second cylinder body and a second piston rod, the second piston rod is movably inserted into the second cylinder body and can move along the axial direction of the second piston rod, the second cylinder body is arranged on the sliding block, one end of the second piston rod is arranged on the connecting part, and the second transmission part is parallel to the central shaft of the connecting pipe body;
fluid is contained in the second cylinder body and the first cylinder body, and the second cylinder body is communicated with the first cylinder body.
According to the surface well construction device provided by the embodiment of the invention, the periphery of the sliding block is provided with the anti-collision flexible piece.
According to the surface well building device provided by the embodiment of the invention, the outer surface of the connecting pipe body is provided with the guide part, and the supporting component and/or the sliding block are/is provided with the matching parts matched with the guide part, so that the supporting component and/or the sliding block can move along the guide part.
According to the surface well building device provided by the embodiment of the invention, the supporting component comprises a sleeve, a plurality of brackets and a plurality of supporting plates;
the sleeve is movably sleeved on the connecting pipe body and is a plurality of the supports are distributed along the circumferential direction of the sleeve, one end of each support is fixed on the sleeve, and the supporting plate is movably connected to the other end of each support.
According to the surface well-building device provided by the embodiment of the invention, the supporting component further comprises an elastic member, one end of the elastic member is rotatably connected to the bracket, and the other end of the elastic member is rotatably connected to the surface of the supporting plate.
According to the surface well construction device provided by the embodiment of the invention, the surface of the support plate, which is far away from the bracket, is provided with the grid plate.
According to the surface well building device provided by the embodiment of the invention, the periphery of the pipe column is provided with threads.
According to the surface well building device provided by the invention, the support component is movably sleeved on the connecting pipe body, and the baffle component is in transmission connection with the support component, so that the support component in contact with the stratum slides upwards along the connecting pipe body in the mud feeding process of the pipe column and drives the baffle component to be switched into the unfolding state, natural gas fleeing from the stratum is shielded, the natural gas is prevented from crystallizing at the wellhead, the operation risk is reduced, and the well building work efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a surface well construction apparatus provided by an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic perspective view of a surface well construction apparatus according to an embodiment of the present invention;
FIG. 4 is a top view of a surface well construction apparatus provided by an embodiment of the present invention;
fig. 5 is a schematic structural view of a connecting tube according to an embodiment of the present invention;
fig. 6 is a bottom view of a connecting tube body according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a baffle plate provided in an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a second cylinder provided in the embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a slider provided in an embodiment of the present invention;
FIG. 10 is a top view of a slider provided by an embodiment of the present invention;
FIG. 11 is a schematic view of the assembly of the sleeve and the holder provided by the embodiment of the present invention;
FIG. 12 is a top view of the sleeve and holder of FIG. 11;
FIG. 13 is a schematic structural diagram of a support plate according to an embodiment of the present invention;
FIG. 14 is a second schematic structural view of a supporting plate according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a pipe column provided by an embodiment of the invention.
Reference numerals:
10: a pipe string; 11: a thread;
20: connecting the pipe body; 21: a connecting portion; 211: a fourth connecting member; 212: a sixth connecting member; 22: a guide member; 221: a limiting member;
30: a support assembly; 31: a sleeve; 311: a second groove; 32: a support; 321: a ninth connecting member; 33: a support plate; 331: a seventh connecting member; 332: an eighth connecting member; 333: a grid plate; 34: an elastic member;
40: a baffle assembly; 41: a first transmission member; 411: a first cylinder; 412: a first piston rod; 42: a baffle plate; 421: a third connecting member; 422: a fifth connecting member; 423: accommodating grooves;
50: a low-pressure wellhead head;
60: a slider; 61: a flange; 611: a first connecting member; 612: a second connecting member; 613: an anti-collision flexible member; 62: reinforcing ribs; 63: a first groove;
70: a second transmission member; 71: a second cylinder; 711: a hard tube; 712: a connecting port; 713: a hose; 72: a second piston rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the embodiment of the invention, the surface well construction device is used for deepwater natural gas hydrate exploitation, and comprises a pipe string 10, a connecting pipe body 20, a support assembly 30 and a baffle assembly 40 according to the illustration in figure 1.
The connecting pipe body 20 is fixedly connected to one end of the pipe string 10. The support assembly 30 is movably sleeved on the connecting tube 20, and the support assembly 30 is used for supporting the ground. The flapper assembly 40 is positioned on a side of the support assembly 30 remote from the pipe string 10, the flapper assembly 40 having a closed state and an open state. In the closed state, the baffle assembly 40 is folded around the connecting tube body 20; in the deployed state, the baffle assembly 40 is deployed outward in the radial direction of the connecting pipe body 20, and the projected area of the baffle assembly 40 in the deployed state in the axial direction of the connecting pipe body 20 is larger than that in the closed state.
The flapper assembly 40 is drivingly connected to the support assembly 30, and the flapper assembly 40 is switchable from the closed condition to the deployed condition upon movement of the support assembly 30 relative to the connecting tube body 20 in a direction away from the pipe string 10.
Wherein, connecting tube body 20 and tubular column 10 are both ends open-ended hollow cylinder shell structure, and the center pin of connecting tube body 20 and the center pin of tubular column 10 are located same straight line, and modes fixed connection such as welding, threaded connection of connecting tube body 20 and tubular column 10 accessible. A low pressure wellhead head 50 is also connected to the end of the connection body 20 remote from the pipe string 10.
It should be noted that when the support assembly 30 moves upward to the limit position, it does not move upward along the connecting pipe body 20 any more, and the baffle assembly 40 is in the unfolded state, and the projected area along the axial direction of the connecting pipe body 20 is the largest, and the support assembly 30 bears a part of the wellhead load and the weight of the pipe string, so as to improve the structural stability of the surface well-building apparatus.
Well device is built on top layer transfers to the aquatic through drilling ship or platform, and at transferring the in-process, baffle subassembly 40 is in closed condition, is favorable to reducing the resistance that receives in the aquatic when transferring. The pipe string 10 is used to drill into the formation and the support assembly 30 is seated to the surface of the formation as the pipe string 10 is cemented. The support assembly can include components such as a bracket, a support plate, a pillar and the like, and can be supported on the stratum.
As the depth of the pipe string 10 into the mud increases, the support assembly 30 gradually slides upward along the connecting pipe body 20, and the baffle assembly 40 is driven to switch from the closed state to the open state, thereby blocking the natural gas from the formation. The supporting component 30 and the baffle component 40 can be connected in a transmission manner through a linkage, a telescopic rod, an oil cylinder and other elements. Moreover, the baffle plate assembly 40 forms an included angle with the central axis of the connecting pipe body 20 in an unfolded state, which is greater than or equal to 45 degrees and less than or equal to 90 degrees, so that the shielding effect of the baffle plate assembly 40 is ensured.
According to the surface well building device provided by the embodiment of the invention, the support component is movably sleeved on the connecting pipe body, and the baffle component is in transmission connection with the support component, so that the support component in contact with the stratum slides upwards along the connecting pipe body in the mud feeding process of the pipe column and drives the baffle component to be switched into the unfolding state, natural gas fleeing from the stratum is shielded, the natural gas is prevented from crystallizing at the wellhead, the operation risk is reduced, and the well building working efficiency is improved.
Further, the flapper assembly 40 includes a first transmission member 41 and a plurality of flapper 42.
The shutter 42 is swingably connected to the connecting pipe body 20, and the shutter 42 can swing in the axial direction of the connecting pipe body 20 to switch the shutter assembly 40 between the closed state and the open state.
One end of the first transmission member 41 is rotatably connected to the surface of the baffle plate 42, and the other end of the first transmission member 41 is in transmission connection with the support assembly 30, and the first transmission member 41 is used for driving the baffle plate 42 to swing in the direction away from the connecting pipe body 20 under the condition that the support assembly 30 moves in the direction away from the pipe column 10 relative to the connecting pipe body 20, so that the baffle plate assembly 40 is switched from the closed state to the unfolded state.
As shown in fig. 4, the four baffles 42 are uniformly distributed along the circumferential direction of the connecting pipe body 20, and as shown in fig. 7, the baffles 42 have a quadrangular plate-like structure.
The surface of the flap 42 is provided with an accommodation groove 423, and the accommodation groove 423 is used for accommodating the first transmission member 40 when the flap assembly 40 is in the closed state.
As shown in fig. 7, the surface of the blocking plate 42 adjacent to the support member 30 is provided with a strip-shaped receiving groove 423, and the receiving groove 423 extends along the length direction of the blocking plate 42. When the baffle assembly 40 is in the closed state, the first transmission member 40 can be accommodated in the accommodation groove 423, so that the surface well-building device has a compact and stable structure.
Further, the first transmission member 40 has a telescopic structure, and the first transmission member 40 can be extended and contracted along the longitudinal direction thereof, so that the flap 42 can swing. For example, the first transmission member 40 may be a telescopic rod, a hydraulic cylinder, an elastic rod, a linkage, or the like.
In one embodiment, the surface well-building apparatus further includes a sliding block 60, wherein the sliding block 60 is movably sleeved on the connecting pipe 20 and located between the supporting component 30 and the baffle component 40.
The first transmission member 41 includes a first cylinder 411 and a first piston rod 412, the first piston rod 412 is movably inserted in the first cylinder 411 and can move along the axial direction of the first piston rod 412, the first cylinder 411 is rotatably connected to the slider 60, and one end of the first piston rod 412 is rotatably connected to the surface of the baffle plate 42. The first cylinder 411 is pivotable about a joint with the slider 60, and the first piston rod 412 is pivotable about a joint with the flapper 42.
The outer peripheral surface of the connecting pipe body 20 is convexly provided with a connecting portion 21, the surface layer well building device further comprises a second transmission member 70, the second transmission member 70 comprises a second cylinder 71 and a second piston rod 72, the second piston rod 72 is movably inserted into the second cylinder 71 and can move along the axial direction of the second piston rod 72, the second cylinder 71 is arranged on the sliding block 60, one end of the second piston rod 72 is arranged on the connecting portion 21, and the second transmission member 70 is parallel to the central axis of the connecting pipe body 20. The second cylinder 71 and the first cylinder 411 contain fluid, and the second cylinder 71 and the first cylinder 71 communicate with each other.
The second cylinder 71 and the first cylinder 411 may contain a fluid such as compressed air or hydraulic oil.
Specifically, the sliding block 60 is a hollow cylindrical shell structure, one end of the sliding block 60 close to the baffle plate assembly 40 is provided with a flange 61 protruding outwards relative to the outer periphery of the sliding block 60, the end face of the flange 61 is provided with a first connecting piece 611, and the second cylinder 71 is connected with the first connecting piece 611, such as hinged connection, fixed connection and the like. The flange 61 is provided at an outer circumference thereof with a second connecting member 612, and the first cylinder 411 is hinged to the second connecting member 612.
As shown in fig. 5 to 7, the connecting portion 21 has a rectangular plate-shaped structure, a third connecting member 421 is disposed at one end of the blocking plate 42, a fourth connecting member 211 is disposed at the periphery of the connecting portion 21, and the third connecting member 421 is hinged to the fourth connecting member 211, so that the blocking plate 42 can swing up and down by using the third connecting member 421 as a rotating shaft.
As shown in fig. 7, the surface of the baffle plate 42 near the support assembly 30 is provided with a fifth connecting member 422, and the first piston rod 412 is hinged with the fifth connecting member 422.
As shown in fig. 5 and 6, the connecting portion 21 is provided with a sixth connecting member 212 near the surface of the pipe string 10, and the second piston rod 72 is connected to the sixth connecting member 212, for example, hinged, fixed, etc.
As shown in fig. 9, the outer circumference of the slider 60 is further provided with a rib 62 connected to the flange 61 for improving the strength of the slider 60 as a whole. The sliding block 60 may be fixedly connected to the supporting component 30 to achieve synchronous movement, and the sliding block 60 may not be connected to the supporting component 30.
As shown in fig. 8, the second cylinder 71 is provided with a pipe 711 and a connection port 712, and the first cylinder 411 is also provided with a pipe 711 and a connection port 712. As shown in fig. 2, the first cylinder 411 and the hard pipe 711 of the second cylinder 71 communicate with each other through a hose 713, and the first cylinder 411 and the connection port 712 of the second cylinder 71 communicate with each other through another hose 713, so that the hydraulic circuit communication between the first transmission member 41 and the second transmission member 70 is realized.
In one embodiment, when the support assembly 30 moves upward relative to the connecting tube 20, the second transmission member 70 is compressed, the second piston rod 72 is gradually retracted into the second cylinder 71, and the fluid in the second cylinder 71 is compressed and flows into the first cylinder 411, ejecting the first piston rod 412 and pushing the flap 42 to swing upward until the flap assembly 40 is switched to the deployed state.
Further, the outer circumference of the slider 60 is provided with a crash-proof flexible piece 613. Specifically, as shown in fig. 9, eight flexible bumper members 613 are disposed on the outer periphery of the flange 61 of the slider 60, the flexible bumper members 613 protrude outward relative to the outer periphery of the flange 61, and the flexible bumper members 613 can prevent the four flaps 42 from colliding with the slider 60 and causing damage when the flap assembly 40 is switched to the closed state.
The crash flex 613 may be a silicone, rubber, or the like.
The outer surface of the connecting tube body 20 is provided with the guide 22, and the supporting member 30 and/or the slider 60 is provided with a fitting to be fitted with the guide 22 so that the supporting member 30 and/or the slider 60 can be moved along the guide 22.
The guide member may be a chute, a guide rail, or the like.
In one embodiment, as shown in fig. 5, four guide members 22 are protruded from the outer surface of the connecting tube body 20, and the guide members 22 extend in the axial direction of the connecting tube body 20. The inner surfaces of the support member 30 and the slider 60 are provided with mating members, which are recesses, that mate with the guide member 22.
For example, as shown in fig. 9 and 10, the inner surface of the slider 60 is provided with four first grooves 63 adapted to the position and size of the guide member 22, and the guide member 22 is movably inserted into the first grooves 63.
The guide member 22 is further provided at both ends thereof with stoppers 221 for limiting the extreme positions of the supporting member 30 and/or the slider 60 and preventing the supporting member 30 and/or the slider 60 from being removed from the connecting tube body 20.
Further, the support assembly 30 includes a sleeve 31, a plurality of brackets 32, and a plurality of support plates 33. The sleeve 31 is movably sleeved on the connecting tube 20, as shown in fig. 10 and 11, and a plurality of brackets 32 are distributed along the circumference of the sleeve 31. One end of the bracket 32 is fixed to the sleeve 31, and the support plate 33 is movably coupled to the other end of the bracket 32.
In a specific embodiment, as shown in fig. 12, the inner surface of the sleeve 31 is provided with a fitting element, which is a second groove 311 adapted to the position and size of the guide 22, the guide 22 is movably inserted into the second groove 311, and the five brackets 32 are uniformly distributed on the outer periphery of the sleeve 31. As shown in fig. 11, the extending direction of the holder 32 is inclined to the central axis of the connecting tube 20, and the angle between the holder 32 and the central axis of the connecting tube 20 is less than 90 °.
A support plate 33 is attached to the end of each bracket 32 remote from the sleeve 31. The support plate 33 has a quadrangular plate-like structure, and the support plate 33 has a trapezoidal shape as shown in fig. 13, for example. The surface of the supporting plate 33 is provided with a seventh connecting piece 331, the seventh connecting piece 331 is hinged with one end of the bracket 32 far away from the sleeve 31, so that the supporting plate 33 can be movably connected, the supporting plate 33 can adapt to the rugged surface of the stratum, the supporting stability is enhanced, and the surface well building device is prevented from toppling.
Further, as shown in fig. 1, the supporting member 30 further includes an elastic member 34, and one end of the elastic member 34 is rotatably connected to the bracket 32 and the other end is rotatably connected to a surface of the supporting plate 33.
In one particular embodiment, the resilient member 34 is a spring-loaded cylinder that is capable of telescoping. As shown in fig. 13, the surface of the supporting plate 33 near the sleeve 31 is provided with an eighth connecting member 332, and the cylinder body of the spring cylinder is hinged with the eighth connecting member 332. As shown in fig. 11, a ninth connecting member 321 is disposed in the middle of the bracket 32, and one end of the piston rod of the spring cylinder, which is far away from the cylinder body, is hinged to the ninth connecting member 321. In this embodiment, the cylinder body and the piston rod of spring cylinder are all rotatable, and spring cylinder's piston rod can stretch out and draw back, for backup pad 33 provides the buffering, make backup pad 33 can laminate various rugged surfaces, are favorable to improving backup pad 33's suitability, and the bearing capacity of reinforcing supporting component 30 guarantees that the well is built on top layer safety, prevents that the well head from sinking.
Further, as shown in fig. 14, the surface of the support plate 33 facing away from the support frame 32 is provided with a grid plate 333. By providing the grid plate 333, the friction between the support plate 33 and the formation mud surface can be increased, and the stability of the support assembly 30 can be improved.
Further, the outer circumference of the pipe string 10 is provided with threads 11 for increasing the contact area with the formation and enhancing the stability and load-bearing capacity of the pipe string 10. Specifically, as shown in fig. 15, the thread 11 is a trapezoidal thread that is convex with respect to the outer periphery of the pipe string 10.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A surface well construction device for deepwater natural gas hydrate exploitation is characterized by comprising:
a pipe string;
the connecting pipe body is fixedly connected with one end of the pipe column;
the supporting component is movably sleeved on the connecting pipe body and is used for supporting the stratum;
a flapper assembly located on a side of the support assembly remote from the tubing string, the flapper assembly having a closed state and an expanded state; in the closed state, the baffle plate assembly is folded on the periphery of the connecting pipe body; in the unfolded state, the baffle assembly is unfolded outwards along the radial direction of the connecting pipe body, and the projection area of the baffle assembly in the unfolded state along the axial direction of the connecting pipe body is larger than that in the closed state;
the baffle assembly is in transmission connection with the support assembly, and under the condition that the support assembly moves relative to the connecting pipe body in the direction far away from the pipe column, the baffle assembly can be switched from the closed state to the unfolded state.
2. The surface well-building apparatus of claim 1 wherein the baffle assembly comprises a first transmission member and a plurality of baffles;
the baffle is connected to the connecting pipe body in a swinging mode and can swing along the axial direction of the connecting pipe body;
one end of the first transmission piece is rotatably connected to the surface of the baffle, the other end of the first transmission piece is in transmission connection with the supporting assembly, and the first transmission piece is used for driving the baffle to swing in the direction far away from the connecting pipe body under the condition that the supporting assembly moves in the direction far away from the pipe column relative to the connecting pipe body.
3. The surface well-building device of claim 2 wherein the surface of said baffle is provided with a receiving groove for receiving said first transmission member when said baffle assembly is in said closed condition.
4. The surface well-building device of claim 2 wherein the first transmission member is a telescopic structure, the first transmission member being capable of telescoping along its length.
5. The surface well construction device according to claim 4, further comprising a sliding block movably sleeved on the connecting pipe body and located between the supporting assembly and the baffle assembly;
the first transmission piece comprises a first cylinder body and a first piston rod, the first piston rod is movably inserted into the first cylinder body and can move along the axial direction of the first piston rod, the first cylinder body is rotatably connected to the sliding block, and one end of the first piston rod is rotatably connected to the surface of the baffle;
the outer peripheral surface of the connecting pipe body is convexly provided with a connecting part, the surface layer well building device further comprises a second transmission part, the second transmission part comprises a second cylinder body and a second piston rod, the second piston rod is movably inserted into the second cylinder body and can move along the axial direction of the second piston rod, the second cylinder body is arranged on the sliding block, one end of the second piston rod is arranged on the connecting part, and the second transmission part is parallel to the central shaft of the connecting pipe body;
fluid is contained in the second cylinder body and the first cylinder body, and the second cylinder body is communicated with the first cylinder body.
6. Surface well construction device according to claim 5, wherein the outer circumference of the slide is provided with crash-proof flexible elements.
7. Surface well construction device according to claim 5, wherein the outer surface of the connecting tube body is provided with a guide, and the support member and/or the slide is provided with a mating member for mating with the guide, such that the support member and/or the slide is movable along the guide.
8. The surface well-building apparatus of claim 1 wherein the support assembly comprises a sleeve, a plurality of brackets, and a plurality of support plates;
the sleeve is movably sleeved on the connecting pipe body and is a plurality of the supports are distributed along the circumferential direction of the sleeve, one end of each support is fixed on the sleeve, and the supporting plate is movably connected to the other end of each support.
9. The surface well-building apparatus of claim 8 wherein the support assembly further comprises a resilient member having one end rotatably connected to the bracket and the other end rotatably connected to a surface of the support plate.
10. Surface well construction device according to claim 8, characterized in that the surface of the support plate facing away from the support is provided with a grid plate.
11. The surface well-building device of claim 1, wherein the outer circumference of the tubular string is threaded.
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| CN202111667995.3A CN114278223B (en) | 2021-12-31 | 2021-12-31 | Surface layer well construction device for exploiting deep water natural gas hydrate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981003157A1 (en) * | 1980-05-02 | 1981-11-12 | Global Marine Inc | Submerged buoyant offshore drilling and production tower |
| CN103015896A (en) * | 2011-08-23 | 2013-04-03 | 包尔机械有限公司 | Underwater drilling arrangement and method for making a bore in a bed of a water body |
| CN109723410A (en) * | 2019-03-24 | 2019-05-07 | 西南石油大学 | A kind of umbrella-type exploitation tool of gas hydrates solid state fluidizing exploitation |
| CN110359843A (en) * | 2019-08-09 | 2019-10-22 | 中国石油大学(华东) | A kind of suction anchor formula surface layer shaft building device being suitable for deep water exploitation of gas hydrates |
| CN214330592U (en) * | 2021-01-04 | 2021-10-01 | 四川中宏瑞石油机械工程有限公司 | Bore hole plugging device for well drilling |
| CN214659987U (en) * | 2021-05-20 | 2021-11-09 | 湖南科技大学 | Subsea drilling rig support leg foot plate structure with water spraying function and movable anchor plate |
-
2021
- 2021-12-31 CN CN202111667995.3A patent/CN114278223B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981003157A1 (en) * | 1980-05-02 | 1981-11-12 | Global Marine Inc | Submerged buoyant offshore drilling and production tower |
| CN103015896A (en) * | 2011-08-23 | 2013-04-03 | 包尔机械有限公司 | Underwater drilling arrangement and method for making a bore in a bed of a water body |
| CN109723410A (en) * | 2019-03-24 | 2019-05-07 | 西南石油大学 | A kind of umbrella-type exploitation tool of gas hydrates solid state fluidizing exploitation |
| CN110359843A (en) * | 2019-08-09 | 2019-10-22 | 中国石油大学(华东) | A kind of suction anchor formula surface layer shaft building device being suitable for deep water exploitation of gas hydrates |
| CN214330592U (en) * | 2021-01-04 | 2021-10-01 | 四川中宏瑞石油机械工程有限公司 | Bore hole plugging device for well drilling |
| CN214659987U (en) * | 2021-05-20 | 2021-11-09 | 湖南科技大学 | Subsea drilling rig support leg foot plate structure with water spraying function and movable anchor plate |
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| CN114278223B (en) | 2023-07-07 |
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