CN113062710A - Portable underwater butt joint throttling device - Google Patents
Portable underwater butt joint throttling device Download PDFInfo
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- CN113062710A CN113062710A CN202110220497.8A CN202110220497A CN113062710A CN 113062710 A CN113062710 A CN 113062710A CN 202110220497 A CN202110220497 A CN 202110220497A CN 113062710 A CN113062710 A CN 113062710A
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- head conversion
- guide cylinder
- butt joint
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- 210000001503 joint Anatomy 0.000 title claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 76
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000003032 molecular docking Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 239000013535 sea water Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003305 oil spill Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
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- 210000003205 muscle Anatomy 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/013—Connecting a production flow line to an underwater well head
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
- E21B34/04—Valve arrangements for boreholes or wells in well heads in underwater well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
- E21B34/04—Valve arrangements for boreholes or wells in well heads in underwater well heads
- E21B34/045—Valve arrangements for boreholes or wells in well heads in underwater well heads adapted to be lowered on a tubular string into position within a blow-out preventer stack, e.g. so-called test trees
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a portable underwater butt joint throttling device, which comprises: the device comprises an inner guide cylinder, an outer guide cylinder, a lower clamp head conversion flange, an upper clamp head conversion flange, a frame, an ROV operation single-bolt clamp, a throttle valve and a hoisting mechanism, wherein the lower clamp head conversion flange and the upper clamp head conversion flange are butted or separated through the ROV operation single-bolt clamp; the portable underwater butt joint throttling device provided by the invention can carry out underwater hoisting and recovery through the saddle-shaped lowering tool or the suspender; the single-bolt hoop can be locked and unlocked through ROV operation to carry out underwater butt joint and separation; the outer guide cylinder and the inner guide cylinder are matched to conduct rough guide, so that the butt joint difficulty is reduced; the opening of the throttle valve can be adjusted by operating the rotary device through the ROV, and the pressure and the flow rate are adjusted; the pointer and the indication scale mark can display the action condition of the underwater part; by connecting the pressure test pipeline with the test channel on the upper clamp head conversion flange, reverse pressure test can be realized, and the integrity of butt joint sealing pressure is detected.
Description
Technical Field
The invention relates to the technical field of underwater equipment, in particular to a portable underwater butt joint throttling device.
Background
After a blowout accident of marine drilling, a large amount of high-temperature high-pressure oil spill is generated in the accident well, and toxic and harmful corrosive gas and hydrate are generated. In the rescue process, a well sealing device is generally used for sealing and recovering spilled oil, and a well sealing strategy of soft well closing is adopted, namely a valve and a throttling device of a branch channel are used for controlling flow and pressure, so that controllable well closing is realized. And the throttling device is difficult to transfer and install, and whether the sealing performance is good or not cannot be determined after the throttling device is transferred and installed, so that great potential safety hazards exist, and the safe and effective well sealing is influenced. Therefore, how to provide an underwater docking throttling device to realize a controllable soft well closing function and ensure that the throttling device can normally work during the underground emergency rescue period is a problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
Therefore, the invention aims to provide a portable underwater butt joint throttling device, which meets the requirements of adjusting and controlling fluid in a well or a pipeline in operations such as drilling, exploitation, blowout accidents and the like, can realize pressure and flow rate adjustment, can be matched with an ROV (remote operated vehicle) to carry out underwater hoisting and butt joint, can carry out underwater pressure integrity test, ensures the normal work of the throttling device, and further improves the safety of well sealing.
The invention provides a portable underwater butt joint throttling device, which comprises:
the inner guide cylinder comprises two parts, the two parts are combined and then tightly hold the outer cylindrical surface of the lower hoop head conversion flange to form a whole, and the two parts are preset in corresponding manifolds;
one end of the outer guide cylinder can be sleeved on the outer wall surface of the inner guide cylinder and forms butt joint coarse positioning; the other end of the frame is fixed with a frame;
the ROV operation single-bolt hoop is characterized in that an installation cavity is formed in the frame, the ROV operation single-bolt hoop is fixed in the installation cavity, and an operation hole of the ROV operation single-bolt hoop extends out of the installation cavity in the lateral direction;
the middle part of the frame is provided with a through hole, the other end of the lower clamp head conversion flange penetrates into the mounting cavity through the bottom of the through hole, one end of the upper clamp head conversion flange penetrates into the mounting cavity from the top of the through hole, and the lower clamp head conversion flange and the upper clamp head conversion flange are butted or separated through an ROV operation single-bolt clamp;
the other end of the upper hoop head conversion flange is connected with the throttle valve through a connecting part; the outlet of the throttle valve is communicated with the seawater to spray spilled oil outwards, or the outlet of the throttle valve is connected with a connecting pipeline to recover spilled oil;
the hoisting mechanism is fixed above the frame and used for hoisting;
wherein, the upper clamp head conversion flange is provided with a test channel, one end of the test channel is connected with the sealing end surface of the upper clamp head conversion flange and the lower clamp head conversion flange, the other end is connected with a liquid flying head Y under water through a pipe joint and a pipeline, and the ROV hydraulic pressure meter provides test pressure and displays the pressure value.
According to the technical scheme, compared with the prior art, the invention discloses a portable underwater butt joint throttling device, an inner guide cylinder and a lower clamp head conversion flange are pre-arranged in a corresponding manifold, the whole device is hoisted into water through a hoisting mechanism, butt joint coarse positioning guiding is completed through the matching of an outer guide cylinder and an inner guide cylinder, fine positioning guiding of an upper clamp head conversion flange and a lower upper clamp head conversion flange is performed through an ROV operation single-bolt clamp, and the ROV operates the ROV operation single-bolt clamp through an operation hole to complete butt joint or separation, so that hoisting and butt joint are convenient; and test pressure can be provided through the ROV hydraulic source after the butt joint, and the sealing performance test is realized on line, so that the use safety of the throttling device is ensured, and the safety of well sealing is further ensured.
Furthermore, the test channel comprises a vertical channel and a horizontal channel, one end of the vertical channel is communicated with the sealing end faces of the upper clamp head conversion flange and the lower clamp head conversion flange, the other end of the vertical channel is communicated with one end of the horizontal channel, and a pipe joint is fixed on the horizontal channel in a sealing mode. The sealing end face is provided with a metal sealing ring, prevents that the inside liquid of clamp head conversion flange from leaking outward, and vertical passageway one end is in the metal sealing ring outside, and this department's gas tightness of reverse pressurization test through outside test pressure to show the pressure value through ROV hydraulic pressure table, and then judge the leakproofness of butt joint back sealing end face.
Furthermore, a circular area C is formed at the intersection of a vertical rib and an inclined rib on the circumferential direction of an outer arm of the inner guide cylinder, and a conical section and a cylindrical section which are provided with a plurality of sections for guiding the lower hoop head conversion flange and the inner guide cylinder and are arranged in a staggered manner are formed on the outer guide cylinder; thereby facilitating positioning in the initial docking.
Further, the frame comprises four rectangular side plates with holes, and an upper frame plate and a lower frame plate which penetrate through the through holes; the rectangular side plates, the frame upper plate and the frame lower plate are connected in pairs and fixed together through the double-headed bolts, the nuts and the gaskets to form a mounting chamber for fixing the ROV operation single-bolt hoop.
Furthermore, the connecting part is a connecting flange connected with the upper hoop head conversion flange, and the connecting flange is arranged at a corresponding inlet on the outer wall of the throttle valve and enables the throttle valve to be in a horizontal placement state; therefore, the structure is suitable for flow-dividing type interception, namely oil spill is sprayed into seawater, the outlet of the throttle valve points to the front, namely the direction of a wellhead or the direction of blowout jet, so that the ROV underwater robot cruises to the outer side and cannot be hit by jet.
Further, adopt the reposition of redundant personnel type, hoisting machine constructs including: the top of the frame is symmetrically welded with two groups of first lifting lugs opposite to two sides of the throttle valve, and each first lifting lug is provided with double lifting holes and forms a 7 shape; the hanger rod is of a door-shaped structure and is formed by bending cylindrical steel pipes through the cross section, the upper portion of the hanger rod is contracted inwards to form a smooth radian, the middle portions of the two cylindrical steel pipes on the two sides of the hanger rod are fixedly connected through the reinforcing plates, the lower end faces of the two cylindrical steel pipes are welded with second lifting lugs with double lifting holes along the axis direction, and the second lifting lugs and the lifting holes on the first lifting lugs are fixedly arranged in a penetrating mode through pin shafts.
Furthermore, the connecting part comprises a saddle-shaped lowering frame, a lifting flange and a tee joint; the saddle-shaped lowering frame is of a saddle-shaped structure with one side closed, the opening side of the saddle-shaped lowering frame is connected with a flange at the inlet of the throttling valve through a flange hoop, and a lifting flange and a tee joint which are sequentially communicated with the inlet of the throttling valve are arranged in the saddle-shaped lowering frame; the bottom that the frame closed side corresponds is transferred to the saddle is provided with the through hole fixed with last clamp head conversion flange and tee bend, and makes the throttle valve be in vertical state of placing. Therefore, the structure is suitable for a recovery type, namely the outlet of the throttle valve is led to one side far away from the well jet flow, the outlet is downwards connected with an underwater hose line, the hose line continuously collects overflowed crude oil through an underwater manifold and recovers the crude oil to an oil collecting ship berthed on the sea surface, so that the marine pollution is reduced, the recovered crude oil can be further refined into products such as gasoline, diesel oil and the like as exploitation income, and the loss is reduced.
Further, adopt the recovery type, hoisting machine constructs for setting up in the saddle third lug of transferring the frame top.
Furthermore, the top of the frame is provided with a scale mark, the upper end of a trunnion of the ROV operation single bolt hoop is provided with a pointer, and the pointer rotates along with the trunnion to follow and indicate the pointer on the scale mark, so that the action condition of the underwater part can be displayed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a recovery type portable underwater docking throttling device provided by the invention (an inner guide cylinder and a lower clamp head conversion flange are not shown);
FIG. 2 is an exploded view of the components of FIG. 1;
FIG. 3 is a schematic structural diagram of a shunt type portable underwater butt joint throttling device provided by the invention (an inner guide cylinder and a lower clamp head conversion flange are not shown);
FIG. 4 is an exploded view of the components of FIG. 3;
FIG. 5 is a schematic view of the inner guide sleeve and lower clamp head transition flange connection;
FIG. 6 is a schematic diagram showing the internal structure of an ROV operating single bolt clamp;
FIG. 7 is a diagram illustrating the positional correspondence of a pointer and scale markings;
FIG. 8 is a schematic view illustrating the sealing end face test of the upper and lower hoop head transition flanges;
FIG. 9 illustrates a recovery throttle device spill flow path;
FIG. 10 is a schematic illustration of a throttle-type throttle device spill flow path;
in the figure: 100-inner guide cylinder, 200-lower hoop head conversion flange, 300-outer guide cylinder, 301-second section cylindrical surface, 302-second section conical surface, 303-diamond plate, 304-U-shaped reinforcing rib, 305-first section cylindrical surface, 306-first section conical surface, 400-frame, 401-rectangular side plate, 402-frame upper plate, 403-frame lower plate, 404-pointer, 405-scale mark, 500-ROV operation single bolt hoop, 501-trunnion, 600-upper hoop head conversion flange, 700-throttle valve, 701-connecting flange, 702-saddle-shaped lower frame, 7021-third lifting lug, 703-lifting flange, 704-tee joint, 705-flange hoop, 800-hoisting mechanism, 801-suspender 801, 1-reinforcing plate, 8012-second lifting lug, 8013-pin shaft, 802-first lifting lug, 900-test channel, 901-pipe joint, 902-pipeline, 903-vertical channel, 904-horizontal channel, C-circular area, Y-underwater liquid flying head.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention can be hoisted and lowered to the water by a drilling ship, a drilling platform or other types of ships, and the underwater pipeline butt joint is carried out by the connecting device; after the butt joint, a reverse pressure test can be carried out through the pressure test interface, and the underwater pressure integrity test is verified; the control of the lifting appliance release, underwater docking and throttle valve can be controlled by an underwater Robot (ROV). According to different conditions, a shunting type or a recycling type can be adopted, the shunting type is suitable for the working condition that the well can be closed in a short period after blowout, and the recycling type is suitable for the working condition that the well can not be closed in a short period after blowout.
Referring to the attached drawings 1 and 2, one embodiment of the invention discloses a recovery type portable underwater butt joint throttling device, which comprises:
the inner guide cylinder 100 comprises two parts, the two parts are combined and then tightly hold the outer cylindrical surface of the lower hoop head conversion flange 200 to form a whole, and the two parts are preset in corresponding manifolds;
one end of the outer guide cylinder 300 can be sleeved on the outer wall surface of the inner guide cylinder 100 and forms butt joint coarse positioning; a frame 400 is fixed at the other end thereof;
the ROV operation single-bolt hoop 500 is characterized in that an installation cavity is formed inside the frame 400, the ROV operation single-bolt hoop 500 is fixed in the installation cavity, and an operation hole of the ROV operation single-bolt hoop 500 extends out of the installation cavity in the lateral direction;
the middle part of the frame 400 of the upper clamp head conversion flange 600 is provided with a through hole, the other end of the lower clamp head conversion flange 200 penetrates into the installation cavity through the bottom of the through hole, one end of the upper clamp head conversion flange 600 penetrates into the installation cavity from the top of the through hole, and the lower clamp head conversion flange 200 and the upper clamp head conversion flange 600 are butted or separated through an ROV operation single bolt clamp 500;
the other end of the upper hoop head conversion flange 600 is connected with the throttle valve 700 through a connecting part; the outlet of the throttle valve 700 is communicated with seawater to spray spilled oil outwards, or the outlet of the throttle valve 700 is connected with a connecting pipeline to recover spilled oil;
the hoisting mechanism 800 is fixed above the frame 400 and used for hoisting;
wherein, the upper clamp head conversion flange 600 is provided with a test channel 900, one end of the test channel 900 is connected with the sealing end faces of the upper clamp head conversion flange 600 and the lower clamp head conversion flange 200, the other end is connected with the underwater liquid flying head Y through a pipe joint 901 and a pipeline 902, and the ROV hydraulic pressure source provides test pressure, and the ROV hydraulic pressure meter displays the pressure value.
Referring to fig. 8, the test channel 900 includes a vertical channel 903 and a horizontal channel 904, one end of the vertical channel 903 is communicated with the sealing end faces of the upper clamp head conversion flange 600 and the lower clamp head conversion flange 200, the other end of the vertical channel is communicated with one end of the horizontal channel 904, and a pipe joint 901 is fixed on the horizontal channel 904 in a sealing manner.
Referring to fig. 5, a circular region C is formed at the intersection of the vertical rib and the diagonal rib on the outer arm of the inner guide cylinder 100 in the circumferential direction, and a plurality of conical sections and cylindrical sections which are guided by the lower clamp head conversion flange 200 and the inner guide cylinder 100 and are arranged in a staggered manner are formed on the outer guide cylinder 300.
The frame 400 includes four rectangular side plates 401 having holes, and an upper frame plate 402 and a lower frame plate 403 penetrating through the through holes; the rectangular side plates 401, the frame upper plate 402 and the frame lower plate 403 are joined two by two and fixed together by stud bolts, nuts and washers to form a mounting chamber for fixing the ROV-operating single bolt clamp 500.
In the scheme, the connecting part comprises a saddle-shaped lowering frame 702, a lifting flange 703 and a tee 704; the saddle-shaped lowering frame 702 is of a saddle-shaped structure with one side closed, the opening side of the saddle-shaped lowering frame is connected with a flange at the inlet of the throttling valve 700 through a flange anchor ear 705, and a lifting flange 703 and a tee joint 704 which are sequentially communicated with the inlet of the throttling valve 700 are arranged in the saddle-shaped lowering frame; the bottom that the frame 702 closed side corresponds is transferred to the saddle is provided with the through hole of fixing with last clamp head conversion flange 600 and tee bend 704, and makes throttle valve 700 be in vertical state of placing, conveniently leads to the choke valve export and keeps away from well head department, and hoisting machine structure 800 is for setting up in the saddle transfer the third lug 7021 at frame 702 top.
Referring to fig. 9, a flange of the throttle valve of the recovery type portable underwater butt joint throttling device can be connected with a pipeline, can be connected across the pipeline, and can also be a pipeline connected with an underwater manifold or a buoyancy pipeline of an FPSO oil collecting vessel, and is lifted by a drilling vessel, a drilling platform or other platforms to be lowered into the sea or lifted out, and a lifting lug on the saddle-shaped lowering tool is used as a lowering and recovering lifting point; the lower clamp head conversion flange and the inner guide cylinder are installed on a pre-arranged underwater pipeline, when the underwater butt joint is carried out, the outer cylinder of the guide cylinder can carry out rough guide, after the guide cylinder is inserted, the ROV operation single bolt clamp carries out accurate guide, and the ROV operation single bolt clamp is locked to complete the underwater butt joint. The recovery type throttling device overflows crude oil underwater → other valves at the lower part → a lower hoop head conversion flange → an upper hoop head conversion flange → a tee joint → a lifting flange → an underwater throttling valve → a recovery pipeline → a sea surface recovery vessel → obtains the loss of income through refining.
Referring to the attached figures 3 and 4, the embodiment of the invention discloses a shunting type portable underwater butt joint throttling device, which comprises:
the inner guide cylinder 100 comprises two parts, the two parts are combined and then tightly hold the outer cylindrical surface of the lower hoop head conversion flange 200 to form a whole, and the two parts are preset in corresponding manifolds;
one end of the outer guide cylinder 300 can be sleeved on the outer wall surface of the inner guide cylinder 100 and forms butt joint coarse positioning; a frame 400 is fixed at the other end thereof;
the ROV operation single-bolt hoop 500 is characterized in that an installation cavity is formed inside the frame 400, the ROV operation single-bolt hoop 500 is fixed in the installation cavity, and an operation hole of the ROV operation single-bolt hoop 500 extends out of the installation cavity in the lateral direction;
the middle part of the frame 400 of the upper clamp head conversion flange 600 is provided with a through hole, the other end of the lower clamp head conversion flange 200 penetrates into the installation cavity through the bottom of the through hole, one end of the upper clamp head conversion flange 600 penetrates into the installation cavity from the top of the through hole, and the lower clamp head conversion flange 200 and the upper clamp head conversion flange 600 are butted or separated through an ROV operation single bolt clamp 500;
the other end of the upper hoop head conversion flange 600 is connected with the throttle valve 700 through a connecting part; the outlet of the throttle valve 700 is communicated with seawater to spray spilled oil outwards, or the outlet of the throttle valve 700 is connected with a connecting pipeline to recover spilled oil;
the hoisting mechanism 800 is fixed above the frame 400 and used for hoisting;
wherein, the upper clamp head conversion flange 600 is provided with a test channel 900, one end of the test channel 900 is connected with the sealing end faces of the upper clamp head conversion flange 600 and the lower clamp head conversion flange 200, the other end is connected with the underwater liquid flying head Y through a pipe joint 901 and a pipeline 902, and the ROV hydraulic pressure source provides test pressure, and the ROV hydraulic pressure meter displays the pressure value.
Referring to fig. 8, the test channel 900 includes a vertical channel 903 and a horizontal channel 904, one end of the vertical channel 903 is communicated with the sealing end faces of the upper clamp head conversion flange 600 and the lower clamp head conversion flange 200, the other end of the vertical channel is communicated with one end of the horizontal channel 904, and a pipe joint 901 is fixed on the horizontal channel 904 in a sealing manner.
Referring to fig. 5, a circular region C is formed at the intersection of the vertical rib and the diagonal rib on the outer arm of the inner guide cylinder 100 in the circumferential direction, and a plurality of conical sections and cylindrical sections which are guided by the lower clamp head conversion flange 200 and the inner guide cylinder 100 and are arranged in a staggered manner are formed on the outer guide cylinder 300.
The frame 400 includes four rectangular side plates 401 having holes, and an upper frame plate 402 and a lower frame plate 403 penetrating through the through holes; the rectangular side plates 401, the frame upper plate 402 and the frame lower plate 403 are joined two by two and fixed together by stud bolts, nuts and washers to form a mounting chamber for fixing the ROV-operating single bolt clamp 500.
In the above scheme, the connection portion is a connection flange 701 connected to the upper clip head conversion flange 600, and the connection flange 701 is disposed at a corresponding inlet on an outer wall of the throttle valve 700, and the throttle valve 700 is placed horizontally. Hoisting machine 800 includes: the top of the frame 400 is symmetrically welded with two groups of first lifting lugs 802 opposite to two sides of the throttle valve 700, the first lifting lugs 802 are provided with double lifting holes and form a 7 shape; the hanger rod 801 is of a door-shaped structure, the cross section of the hanger rod is formed by bending cylindrical steel pipes, the upper portion of the hanger rod is contracted inwards to form a smooth radian, the middle portions of the cylindrical steel pipes on the two sides of the hanger rod are fixedly connected through a reinforcing plate 8011, the lower end faces of the two cylindrical steel pipes are welded with second lifting lugs 8012 with double lifting holes along the axial direction, and the second lifting lugs 8012 and the lifting holes on the first lifting lug 802 are fixedly arranged in a penetrating mode through a pin shaft 8013.
Referring to the attached drawing 10, the shunt type portable underwater butt joint throttling device is not connected with a pipeline, is lifted by a drilling ship, a drilling platform or other platforms and is lowered into the sea or lifted out, and the arc at the upper end of the suspender is used as a lowering and recovering lifting point; the lower clamp head conversion flange and the inner guide cylinder are installed on a pre-arranged underwater pipeline, when the underwater butt joint is carried out, the outer cylinder of the guide cylinder can carry out rough guide, after the guide cylinder is inserted, the ROV operation single bolt clamp carries out accurate guide, and the ROV operation single bolt clamp is locked to complete the underwater butt joint. Crude oil overflowing underwater from the split-flow type throttling device → other valves at the lower part → a lower hoop head conversion flange → an upper hoop head conversion flange → an underwater throttling valve → seawater in the sea area → finally floats to the water surface to pollute the environment.
Advantageously, in the above embodiments, the frame lower plate 403 and the outer guide cylinder are welded together to form a hollow multi-section conical cylinder structure with a plane surface; reinforcing ribs are arranged between the outer guide cylinder and the lower plate of the frame, and a window is arranged on the cylindrical surface of the cylinder at the interval of the two reinforcing ribs; the lower part of the outer guide cylinder is provided with two layers of rhombic plates 303 which are connected with reinforcing ribs and reinforcing pipes; three U-shaped reinforcing ribs 304 are connected with the outer profile of the diamond plate 303 at the corresponding side of the reinforcing pipe to enhance the strength of the outer guide cylinder.
Referring to fig. 6 and 7, the ROV operation single-bolt clamp 500 of the present invention is a prior art, and refer to a subsea clamp type connector disclosed in patent document CN108678705A, in the present invention, a scale mark 405 is installed on the top of the frame 400, a pointer 404 is installed on the upper end of the trunnion 501 of the ROV operation single-bolt clamp 500, and the pointer 404 follows the trunnion 501 to rotate and is indicated on the scale mark 405. One side of the scale mark is S, and the other side is O; the pointer is installed on a nut trunnion of ROV operation list bolt clamp, and the scale mark is installed on outer frame upper plate. When the single-bolt hoop is locked, the nut trunnion is positioned near the S, the pointer points to the S, and on the contrary, when the single-bolt hoop is opened, the pointer points to the O.
In the above embodiment, regarding the tightness test, the ROV carries the pressure source, and by connecting the pressure test pipeline with the test channel on the upper clamp head conversion flange, reverse pressure test can be realized, and the integrity of the butt seal pressure can be detected. The vertical channel is communicated to the outer side of the metal sealing steel ring, the sealing steel ring is of a circular flat plate structure, sealing O-shaped sealing rings are arranged on the upper side and the lower side of the flat plate, and when the upper hoop head conversion flange and the lower hoop head conversion flange compress the steel ring, the sealing O-shaped rings are compressed. Thus, a closed gap containing cavity is formed from the metal sealing steel ring to the inside of the O-shaped ring. The horizontal channel is connected with a pipeline, an ROV carries an underwater flying line to apply hydrostatic pressure to the inside, the hydrostatic pressure only acts on the outer side of the steel ring, the working state is just opposite, and when the horizontal channel works, the pressure from the underground is applied to the through hole in the upper hoop head, and the pressure acts on the inner side of a sealing strip of the sealing steel ring. Whether the sealing steel ring forms initial sealing or not can be checked through reverse pressure testing so as to check whether installation meets requirements or not.
In the above embodiment, regarding rough positioning and fine positioning, as the steel cable of the drilling vessel lowers the shunt-type or recovery-type portable throttling device, the outer guide cylinder at the lower part slowly approaches the lower clamp head converting flange which is already installed on the subsea equipment manifold, because the inner diameter of the outer guide cylinder is larger, and the outer diameter of the lower clamp head converting flange is smaller, although the portable throttling device swings with the water flow along the water flow, the portable throttling device can be inserted under the condition of larger axis deviation difference (170 and 200mm) or deviation angle (5-10 °), the first section of conical surface 306 of the outer guide cylinder after entering the lower clamp head converting flange contacts the surface of the lower clamp head converting flange, so that the lower clamp head converting flange slowly slides into the first section of cylindrical surface 305 along the conical surface, after entering a distance, the inner guide cylinder wrapped on the outer side of the lower clamp head converting flange starts to act, and the ribs distributed in the circumferential direction of the outer side form a region C, the diameter of the outer guide cylinder is slightly smaller than the first section of cylindrical surface 305 of the outer guide cylinder, firstly, the inclined ribs on the outer side of the inner guide cylinder contact the first section of conical surface 306 of the outer guide cylinder and slide in slowly, and then the straight surfaces of the ribs on the outer side contact the first section of cylindrical surface 305 of the outer guide cylinder, so that the larger axial deflection angle or eccentricity during the lowering can be corrected to the difference between (0-1 degree) and about 10 mm. Along with slowly entering, when interior guide cylinder diagonal muscle and the contact of outer guide cylinder second section conical surface 302, the circular region that three point location can be formed to lower clamp head switching flange external diameter in outer guide cylinder second section cylindrical surface 301 contact accurate direction and begin to play a role, have the conical surface on the hypoplastron of single bolt clamp, three locating pin, after the upper portion surface contact conical surface of last clamp head, gradually get into the circular region that three locating pin formed, this process can be about 1mm and in a minimum axis angle the axis deviation restraint of upper and lower clamp head. I.e. the effect of accurate positioning. And finally, the accurate butt joint of the upper and lower hoop head flanges is realized, and the sealing reliability is ensured.
The portable underwater butt joint throttling device provided by the invention can carry out underwater hoisting and recovery through the saddle-shaped lowering tool or the suspender; the rotation device can be operated by an ROV (remote operated vehicle) to lock and unlock the single-bolt hoop for underwater butt joint and separation; the outer guide cylinder and the inner guide cylinder are matched to conduct rough guide, so that the butt joint difficulty is reduced; the opening of the throttle valve can be adjusted by operating the rotary device through the ROV, and the pressure and the flow rate are adjusted; the pointer and the indication scale mark can display the action condition of the underwater part; by connecting the pressure test pipeline with the test channel on the upper clamp head conversion flange, reverse pressure test can be realized, and the integrity of butt joint sealing pressure is detected.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A portable underwater docking throttling device, comprising:
the inner guide cylinder (100) comprises two parts, the two parts are combined and then tightly hold the outer cylindrical surface of the lower hoop head conversion flange (200) to form a whole, and the two parts are preset in corresponding manifolds;
one end of the outer guide cylinder (300) can be sleeved on the outer wall surface of the inner guide cylinder (100) and forms butt joint coarse positioning; the other end of the frame is fixed with a frame (400);
the ROV operation single-bolt clamp (500) is characterized in that an installation cavity is formed in the frame (400), the ROV operation single-bolt clamp (500) is fixed in the installation cavity, and an operation hole of the ROV operation single-bolt clamp (500) extends out of the installation cavity in the lateral direction;
the lower clamp head conversion flange (200) and the upper clamp head conversion flange (600) are in butt joint or separation through ROV operation of the ROV operation single bolt clamp (500);
the other end of the upper hoop head conversion flange (600) is connected with the throttle valve (700) through a connecting part; the outlet of the throttle valve (700) is communicated with seawater to spray spilled oil outwards, or the outlet of the throttle valve (700) is connected with a connecting pipeline to recover spilled oil;
the hoisting mechanism (800) is fixed above the frame (400) and used for hoisting;
the test channel (900) is formed in the upper clamp head conversion flange (600), one end of the test channel (900) reaches the upper clamp head conversion flange (600) and the sealing end face of the lower clamp head conversion flange (200), the other end of the test channel is connected with the underwater liquid flying head (Y) through the pipe joint (901) and the pipeline (902), test pressure is provided by the ROV hydraulic source, and the ROV hydraulic gauge displays the pressure value.
2. The portable underwater butt joint throttling device as claimed in claim 1, wherein the testing channel (900) comprises a vertical channel (903) and a horizontal channel (904), one end of the vertical channel (903) is communicated to the sealing end faces of the upper clamp head conversion flange (600) and the lower clamp head conversion flange (200), the other end of the vertical channel is communicated with one end of the horizontal channel (904), and the pipe joint (901) is hermetically fixed on the horizontal channel (904).
3. The portable underwater butt joint throttling device according to claim 1, wherein a circular area (C) is formed at the intersection of a vertical rib and a diagonal rib on the outer arm circumference direction of the inner guide cylinder (100), and a plurality of conical sections and cylindrical sections which are used for guiding the lower hoop head conversion flange (200) and the inner guide cylinder (100) and are arranged in a staggered manner are formed on the outer guide cylinder (300).
4. A portable underwater docking restriction device according to claim 1, wherein the frame (400) comprises four perforated rectangular side plates (401), and an upper frame plate (402) and a lower frame plate (403) which pass through the perforations; the rectangular side plate (401), the frame upper plate (402) and the frame lower plate (403) are joined in pairs and fixed together by stud bolts, nuts and spacers to form a mounting chamber for fixing the ROV operation single bolt clamp (500).
5. A portable underwater docking throttling device according to claim 1, wherein the connecting portion is a connecting flange (701) connected to the upper band head converting flange (600), the connecting flange (701) is disposed at a corresponding inlet on an outer wall of the throttling valve (700), and the throttling valve (700) is placed horizontally.
6. A portable underwater docking throttling device according to claim 5, wherein said hoisting means (800) comprises: the top of the frame (400) is symmetrically welded with two groups of first lifting lugs (802) relative to two sides of the throttle valve (700), and the first lifting lugs (802) are provided with double lifting holes and form a 7 shape; the hanger rod (801) is of a door-shaped structure and formed by bending cylindrical steel pipes through sections, the upper portion of the hanger rod is contracted inwards to form a smooth radian, the middle portions of the cylindrical steel pipes on the two sides of the hanger rod are fixedly connected through a reinforcing plate (8011), second lifting lugs (8012) with double lifting holes are welded on the lower end faces of the two cylindrical steel pipes along the axial direction, and the second lifting lugs (8012) and the lifting holes in the first lifting lugs (802) are fixedly arranged in a penetrating mode through hinge pins (8013).
7. A portable underwater docking restriction according to claim 1, wherein the connection comprises a saddle-shaped drop frame (702), a lifting flange (703) and a tee (704); the saddle-shaped lowering frame (702) is of a saddle-shaped structure with one closed side, the opening side of the saddle-shaped lowering frame is connected with a flange at the inlet of the throttling valve (700) through a flange hoop (705), and the saddle-shaped lowering frame is internally provided with the lifting flange (703) and the tee joint (704) which are sequentially communicated with the inlet of the throttling valve (700); the bottom corresponding to the closed side of the saddle-shaped lowering frame (702) is provided with a through hole which is fixed with the upper hoop head conversion flange (600) and the tee joint (704), and the throttle valve (700) is in a vertical placement state.
8. A portable underwater docking throttling device according to claim 7, wherein said hoisting means (800) is a third lifting lug (7021) arranged at the top of said saddle shaped lowering frame (702).
9. A portable underwater butt joint throttling device according to claim 5 or 7, wherein a scale mark (405) is arranged at the top of the frame (400), a pointer (404) is arranged at the upper end of a trunnion (501) of the ROV operation single bolt hoop (500), and the pointer (404) follows the rotation of the trunnion (501) and is indicated on the scale mark (405).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110220497.8A CN113062710A (en) | 2021-02-26 | 2021-02-26 | Portable underwater butt joint throttling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110220497.8A CN113062710A (en) | 2021-02-26 | 2021-02-26 | Portable underwater butt joint throttling device |
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| CN113062710A true CN113062710A (en) | 2021-07-02 |
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| CN202110220497.8A Pending CN113062710A (en) | 2021-02-26 | 2021-02-26 | Portable underwater butt joint throttling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114738540A (en) * | 2022-06-14 | 2022-07-12 | 中海石油(中国)有限公司 | But recovery type choke valve under long distance high-efficient drive water |
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