Opening and closing device for assisting righting, inserting and driving of drill conductor

Abstract

The utility model discloses an opening and closing device assisting in righting, inserting and driving a drill conductor, which belongs to the technical field of offshore oil engineering and comprises a support frame, a first opening and closing component and a second opening and closing component are movably connected onto the support frame and can be assembled and locked to form a horn mouth, and the horn mouth is provided with a plurality of opening and closing holes. The shape of the horn mouth is matched with a casing pipe of the drill conductor and a low-pressure well head of the drill conductor so as to centralize the drill conductor. The utility model discloses not only can provide righting force to guarantee the free standing and verticality of casing, but also can have the opening and closing function, along with the deep piling, when low-pressure wellhead reaches the horn mouth, the first opening and closing component and the second opening and closing component can be opened and separated to make low-pressure wellhead pass smoothly, and the construction difficulty is low, and can be reused, and the cost is saved. The construction risk is reduced, and the project cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore oil engineering, and particularly relates to an opening and closing device for assisting the straightening and insertion of a water-blocking casing. Background Art

[0002] At present, the main form of oil and gas development is the development of jacket platforms. However, in addition to the open sea, there are also a large number of oil and gas resources in the navigable areas of some sea areas. The development of oil and gas in this area is not suitable for jackets. In order to make full use of the resources in the navigable area and realize the economic and safe exploitation of oil and gas, the development of underwater production systems has been applied. The waterproof casing installed on the jacket can rely on the waterproof casing guide layer at the top, middle and bottom of the jacket to ensure its installation verticality. However, the height of the underwater production system is limited. When using conventional crane ships to install waterproof casing, relying solely on the base support cannot guarantee the free standing requirements of the waterproof casing. In addition, the verticality requirements of the waterproof casing installation are high. The top of the waterproof casing carries a low-pressure wellhead head that is slightly larger than the casing diameter, and the verticality of the low-pressure wellhead head is difficult to ensure.

[0003] Therefore, it is urgent to design an opening and closing device for assisting the straightening and insertion of the riser casing to solve the above-mentioned problem of difficulty in ensuring the free standing of the riser casing and the verticality of the low-pressure wellhead of the riser casing. Utility Model Content

[0004] In order to solve the technical problem mentioned in the background technology that the free standing of the riser casing and the verticality of the low-pressure wellhead of the riser casing cannot be guaranteed, an opening and closing device for assisting the straightening and insertion of the riser casing is provided to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the specific technical scheme of the opening and closing device for assisting the waterproof casing to be straightened and inserted is as follows:

[0006] An opening and closing device for assisting in the straightening and insertion of a watertight casing comprises a supporting frame on which a first opening and closing assembly and a second opening and closing assembly are movably connected. The first opening and closing assembly and the second opening and closing assembly can be assembled and locked to form a bell mouth, the shape of which matches the casing of the watertight casing and the low-pressure wellhead of the watertight casing to straighten the watertight casing.

[0007] Furthermore, the first opening and closing assembly includes a first half speaker, and the second opening and closing assembly includes a second half speaker, and the first half speaker and the second half speaker are spliced ​​to form a speaker mouth.

[0008] Furthermore, the first half trumpet and the second half trumpet are both provided with an arc segment and a semi-conical segment, and the arc segment and the semi-conical segment are fixedly connected, the arc segment of the first half trumpet and the arc segment of the second half trumpet are spliced ​​to form a straightening ring, and the straightening ring matches the casing section diameter of the riser casing, the semi-conical segment of the first half trumpet and the semi-conical segment of the second half trumpet are spliced ​​to form a conical straightening groove, and the conical straightening groove matches the low-pressure wellhead of the riser casing.

[0009] Furthermore, the support frame includes a support rod and a connecting rod, the support rod is fixedly connected to the connecting rod, and the first opening and closing assembly and the second opening and closing assembly are movably connected to the support rod, and the first opening and closing assembly and the second opening and closing assembly can move in the direction of the support rod.

[0010] Furthermore, sliders are provided at opposite ends of the first opening and closing assembly and the second opening and closing assembly, and a slide groove is provided on the support rod. The slide groove is slidably connected to the slider, so that the first opening and closing assembly and the second opening and closing assembly can move in the direction of the support rod.

[0011] Furthermore, a plurality of positioning holes are provided on the slide, and a locking screw hole is provided on the slider. Bolts pass through the positioning holes and are screwed into the locking screw holes. The bolts are rotated to fix the slider and the slide, thereby locking the first opening and closing assembly and the second opening and closing assembly on the support rod.

[0012] Furthermore, pulleys are provided at opposite ends of the first opening and closing assembly and the second opening and closing assembly, and a track is provided on the support rod for the pulleys to slide, so that the first opening and closing assembly and the second opening and closing assembly can move in the direction of the support rod.

[0013] Furthermore, a first screw hole is provided on the connecting rod, a first adjusting rod is screwed into the first screw hole, one end of the first adjusting rod is connected to the first opening and closing assembly, and the first adjusting rod is rotated to adjust the position of the first opening and closing assembly on the supporting rod;

[0014] The connecting rod is also provided with a second screw hole, in which a second adjusting rod is screwed, one end of which is connected to the second opening and closing assembly, and the second adjusting rod is rotated to adjust the position of the second opening and closing assembly on the supporting rod.

[0015] Furthermore, a first connection seat is fixedly connected to the first opening and closing component, and the first connection seat is rotatably connected to the first adjusting rod. A second connection seat is fixedly connected to the second opening and closing component, and the second connection seat is rotatably connected to the second adjusting rod.

[0016] Furthermore, the lengths of the first adjusting rod and the second adjusting rod are both greater than the length of the track.

[0017] The opening and closing device for assisting the straightening and insertion of the waterproof casing of the utility model has the following advantages: the utility model can not only provide a straightening force to ensure the free standing and verticality of the casing, but also has an opening and closing function. As the piling goes deeper and the low-pressure wellhead reaches the bell mouth, the first opening and closing component and the second opening and closing component can be opened and separated, so that the low-pressure wellhead can pass smoothly. The construction difficulty is low and the device can be reused, which not only reduces the construction risk but also reduces the project cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the opening and closing device for assisting the waterproof casing to be straightened and inserted in the utility model;

[0019] Figure 2 This is a schematic diagram of the second half of the speaker structure of the utility model;

[0020] Figure 3 It is a schematic structural diagram of the second opening and closing device for assisting the waterproof casing to be straightened and inserted in the utility model;

[0021] Figure 4 It is a schematic diagram of the opening and closing of the second opening and closing device for assisting the straightening and insertion of the waterproof casing of the utility model.

[0022] Markings in the figure: 1. Support frame; 101. Support rod; 102. Connecting rod; 2. First opening and closing assembly; 201. First half speaker; 202. First connecting seat; 3. Second opening and closing assembly; 301. Second half speaker; 100. Arc segment; 200. Semi-conical segment; 4. Slider; 5. Slide groove; 6. Positioning hole; 7. Pulley; 8. Track; 9. First screw hole; 10. First adjusting rod; 11. Second screw hole; 12. Second adjusting rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0025] Please refer to the attached Figure 1 To Attachment Figure 4 The utility model describes an opening and closing device for assisting the straightening and insertion of a water-blocking casing.

[0026] The existing base plate support cannot guarantee the free standing requirement of the riser casing, and the verticality requirement of the riser casing installation is high. The top of the riser casing carries a low-pressure wellhead slightly larger than the casing diameter, and the verticality of the low-pressure wellhead section is difficult to ensure.

[0027] Therefore, the utility model provides an opening and closing device for assisting the waterproof casing to be straightened and inserted, such as Figure 1 As shown, it includes a supporting frame 1, on which a first opening and closing component 2 and a second opening and closing component 3 are movably connected. The first opening and closing component 2 and the second opening and closing component 3 can be assembled and locked to form a bell mouth, and the shape of the bell mouth matches the casing of the watertight casing and the low-pressure wellhead of the watertight casing to straighten the watertight casing and ensure the free standing and verticality of the watertight casing.

[0028] The first opening and closing component 2 includes a first half speaker 201 , and the second opening and closing component 3 includes a second half speaker 301 . The first half speaker 201 and the second half speaker 301 are spliced ​​to form a speaker mouth.

[0029] Preferably, the first opening and closing assembly 2 and the second opening and closing assembly 3 are symmetrically arranged to ensure that the first half horn 201 and the second half horn 301 do not interfere with the waterproof casing when they are separated.

[0030] like Figure 2 As shown, the first half horn 201 and the second half horn 301 are both provided with an arc segment 100 and a semi-conical segment 200, and the arc segment 100 and the semi-conical segment 200 are fixedly connected, the arc segment 100 of the first half horn 201 and the arc segment 100 of the second half horn 301 are spliced ​​to form a straightening ring, and the straightening ring matches the diameter of the casing section of the riser so as to straighten the casing section of the riser, the semi-conical segment 200 of the first half horn 201 and the semi-conical segment 200 of the second half horn 301 are spliced ​​to form a conical straightening groove, and the conical straightening groove matches the low-pressure wellhead of the riser so as to straighten the low-pressure wellhead of the riser, thereby meeting the overall verticality requirement of the riser.

[0031] The support frame 1 includes a support rod 101 and a connecting rod 102, the support rod 101 is fixedly connected to the connecting rod 102, and the support rod 101 is movably connected with a first opening and closing component 2 and a second opening and closing component 3. The first opening and closing component 2 and the second opening and closing component 3 can move in the direction of the support rod 101, so that the bell mouth can be fine-tuned to achieve the purpose of accurately aligning the bell mouth with the base plate hole.

[0032] like Figure 1As shown, sliders 4 are provided at the opposite ends of the first opening and closing component 2 and the second opening and closing component 3, and a slide groove 5 is provided on the support rod 101. The slide groove 5 is slidably connected with the slider 4, so that the first opening and closing component 2 and the second opening and closing component 3 move in the direction of the support rod 101, thereby splicing or separating the first half speaker 201 and the second half speaker 301.

[0033] A plurality of positioning holes 6 are provided on the slide groove 5, and a locking screw hole is provided on the slider 4. Bolts pass through the positioning holes 6 and are screwed into the locking screw holes. The bolts are turned to fix the slider 4 and the slide groove 5, thereby locking the first opening and closing component 2 and the second opening and closing component 3 on the support rod 101.

[0034] In another specific embodiment, a wheel-track method is used to realize the movable connection between the support frame 1 and the first opening and closing component 2 and the second opening and closing component 3, such as Figure 3 and Figure 4 As shown, pulleys 7 are provided at opposite ends of the first opening and closing assembly 2 and the second opening and closing assembly 3 , and a track 8 is provided on the support rod 101 , and the track 8 allows the pulleys 7 to slide, so that the first opening and closing assembly 2 and the second opening and closing assembly 3 move in the direction of the support rod 101 .

[0035] Preferably, a first screw hole 9 is provided on the connecting rod 102, and a first adjusting rod 10 is screwed into the first screw hole 9. One end of the first adjusting rod 10 is connected to the first opening and closing component 2. The first adjusting rod 10 is rotated to adjust the position of the first opening and closing component 2 on the support rod 101; a second screw hole 11 is also provided on the connecting rod 102, and a second adjusting rod 12 is screwed into the second screw hole 11. One end of the second adjusting rod 12 is connected to the second opening and closing component 3. The second adjusting rod 12 is rotated to adjust the position of the second opening and closing component 3 on the support rod 101, that is, the first opening and closing component 2 on the support rod 101 can be moved forward and backward by the forward and reverse rotation of the first adjusting rod 10, and the second opening and closing component 3 on the support rod 101 can be moved forward and backward by the forward and reverse rotation of the second adjusting rod 12.

[0036] Preferably, a first connecting seat 202 is fixedly connected to the first opening and closing component 2, and the first connecting seat 202 is rotatably connected to the first adjusting rod 10. A second connecting seat is fixedly connected to the second opening and closing component 3, and the second connecting seat is rotatably connected to the second adjusting rod 12.

[0037] Specifically, a first bearing is provided on the first connecting seat 202, the outer ring of the first bearing is fixedly connected to the first connecting seat 202, and the inner ring of the first bearing is fixedly connected to the first adjusting rod 10, thereby realizing the rotational connection between the first connecting seat 202 and the first adjusting rod 10; a second bearing is provided on the second connecting seat, the outer ring of the second bearing is fixedly connected to the second connecting seat, and the inner ring of the first bearing is fixedly connected to the second adjusting rod 12, thereby realizing the rotational connection between the second connecting seat and the second adjusting rod 12.

[0038] Preferably, the lengths of the first adjusting rod 10 and the second adjusting rod 12 are both greater than the length of the track 8, so that the bell mouth can be moved and adjusted to the maximum extent on the supporting frame 1, thereby accurately straightening the waterproof casing.

[0039] The working principle of this utility model:

[0040] S1. Install the device on the base plate on land and align the bell mouth with the base plate hole;

[0041] S2. Offshore construction: Install the base plate and the bell mouth as a whole and level them;

[0042] S3. Insert the waterproof casing, plan the pile driving sequence and depth reasonably according to the geological conditions and structural strength, and use the pile hammer to drive the low-pressure wellhead of the waterproof casing close to the bell mouth;

[0043] S4, the diver opens the bell mouth;

[0044] S5. Continue to use the hammer to drive the piles and drive the waterproof casing into the designed mud entry position. The installation of the waterproof casing is completed.

[0045] The utility model is provided with a symmetrical bell-mouth, and the water-blocking casing is inserted into the bell-mouth for guidance. The water-blocking casing leans against the bell-mouth, and the bell-mouth is used to provide a straightening force for the water-blocking casing and ensure the verticality of the casing installation. During the casing installation process, the bell-mouth can be opened with the assistance of a diver to allow the pile hammer to pass smoothly and continue to pile in place. The device is reusable, and effectively solves the requirements for free standing and verticality of installation of the water-blocking casing of the underwater production system. The construction difficulty is low, and the verticality requirement of the water-blocking casing installation can be met. The device can be recycled and reused, which not only reduces construction risks but also reduces project costs.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An opening and closing device for assisting the straightening and insertion of a waterproof casing, characterized in that: It includes a supporting frame, on which a first opening and closing component and a second opening and closing component are movably connected. The first opening and closing component and the second opening and closing component can be assembled and locked to form a bell mouth. The shape of the bell mouth matches the casing of the watertight casing and the low-pressure wellhead of the watertight casing to straighten the watertight casing.

2. The opening and closing device for assisting the straightening and insertion of the waterproof casing according to claim 1 is characterized in that: The first opening and closing component includes a first half speaker, and the second opening and closing component includes a second half speaker. The first half speaker and the second half speaker are spliced ​​to form a speaker mouth.

3. The opening and closing device for assisting the waterproof casing straightening and insertion according to claim 2 is characterized in that: The first half trumpet and the second half trumpet are both provided with arc segments and semi-conical segments, which are fixedly connected; the arc segments of the first half trumpet and the arc segments of the second half trumpet are spliced ​​together to form a straightening ring, which matches the diameter of the casing section of the riser; the semi-conical segment of the first half trumpet and the semi-conical segment of the second half trumpet are spliced ​​together to form a conical straightening groove, which matches the low-pressure wellhead of the riser.

4. The opening and closing device for assisting the waterproof casing straightening and insertion according to claim 2 is characterized in that: The support frame includes a support rod and a connecting rod, the support rod is fixedly connected to the connecting rod, and a first opening and closing component and a second opening and closing component are movably connected to the support rod, and the first opening and closing component and the second opening and closing component can move in the direction of the support rod.

5. The opening and closing device for assisting the waterproof casing straightening and insertion according to claim 4 is characterized in that: Slide blocks are provided at opposite ends of the first opening and closing component and the second opening and closing component, and a slide groove is provided on the support rod. The slide groove is slidably connected with the slide block, so that the first opening and closing component and the second opening and closing component can move in the direction of the support rod.

6. The opening and closing device for assisting the waterproof casing to be straightened and inserted according to claim 5 is characterized in that: The slide groove is provided with a plurality of positioning holes, the slider is provided with locking screw holes, the bolts pass through the positioning holes and are screwed with the locking screw holes, and the bolts are rotated to fix the slider and the slide groove, thereby locking the first opening and closing assembly and the second opening and closing assembly on the support rod.

7. The opening and closing device for assisting the waterproof casing straightening and insertion according to claim 4 is characterized in that: Pulleys are arranged at opposite ends of the first opening and closing component and the second opening and closing component, and tracks are arranged on the support rod for the pulleys to slide, so that the first opening and closing component and the second opening and closing component can move in the direction of the support rod.

8. The opening and closing device for assisting the waterproof casing straightening and insertion according to claim 7 is characterized in that: A first screw hole is provided on the connecting rod, a first adjusting rod is screwed into the first screw hole, one end of the first adjusting rod is connected to the first opening and closing component, and the first adjusting rod is rotated to adjust the position of the first opening and closing component on the supporting rod; The connecting rod is also provided with a second screw hole, in which a second adjusting rod is screwed, one end of which is connected to the second opening and closing assembly, and the second adjusting rod is rotated to adjust the position of the second opening and closing assembly on the supporting rod.

9. The opening and closing device for assisting the waterproof casing to be straightened and inserted according to claim 8 is characterized in that: The first opening and closing component is fixedly connected with a first connecting seat, which is rotatably connected to the first adjusting rod. The second opening and closing component is fixedly connected with a second connecting seat, which is rotatably connected to the second adjusting rod.

10. The opening and closing device for assisting the waterproof casing straightening and insertion according to claim 8, characterized in that: The lengths of the first adjusting rod and the second adjusting rod are both greater than the length of the track.

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