CN107476775B - It is a kind of to assist under water to wellhead assembly and operating method - Google Patents
It is a kind of to assist under water to wellhead assembly and operating method Download PDFInfo
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- CN107476775B CN107476775B CN201710873937.3A CN201710873937A CN107476775B CN 107476775 B CN107476775 B CN 107476775B CN 201710873937 A CN201710873937 A CN 201710873937A CN 107476775 B CN107476775 B CN 107476775B
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- wellhead assembly
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- rov
- semicircular
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- 238000011017 operating method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000003139 buffering effect Effects 0.000 claims abstract description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims 1
- 239000000872 buffer Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010016173 Fall Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
Landscapes
- 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)
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of underwater auxiliary to wellhead assembly and operating method, wherein underwater auxiliary includes symmetrically arranged two sets to shaft collar to wellhead assembly, two sets of edges to shaft collar are connected by door-hinge, by switch locking, two sets are cylindrical in shape opposite other edge when locking to shaft collar；Described includes semi-circular buffering steel plate, spring, semi arch plate, semicircular cylinder stressed plate, semicircular ring base plate, semicircular cylinder bearing base and lifting earrings to shaft collar, semicircular ring base plate bottom surface is welded on semicircular cylinder bearing base, semi arch plate, semicircular cylinder stressed plate are respectively welded on semicircular ring pedestal plate top surface, it is connected between semi arch plate, semicircular cylinder stressed plate and semi-circular buffering steel plate by spring, the medial surface that semi-circular buffers steel plate is arcwall face, and lifting earrings is arranged on semicircular cylinder bearing base.The operating method of the present invention can be realized two open setting of casing safely, to rapidly enter low pressure well oral, reduce marine environment influences on shaft mouth operation bring.
Description
Technical field
The present invention relates to the drilling engineering field of the resources such as petroleum gas, especially a kind of deep water surface layer operation auxiliary set
Pipe enters safely the oral underwater auxiliary of underwater low pressure well to wellhead assembly and operating method.
Background technique
Ocean deepwater drilling work flow is general are as follows: surface layer injection tripping in surface conductor pipe (band low pressure well is oral), two drive a well
Eye drilling, setting of casing, well cementation, lower subsea blowout preventer and marine riser, under open operation etc..To open casing job be to install due to two
Before subsea blowout preventer and marine riser, therefore, when casing is at low pressure well head, influenced by ocean bottom currents, casing waves not
It is fixed, it is extremely low to well head efficiency, while operation process middle sleeve easily with low pressure well is oral collides, cause casing float shoe to damage
Bad, junk or the oral port sealing damage of low pressure well, bring very big security risk to subsequent job.
Due to ocean deepwater operation develop at home it is later, it is domestic at present temporarily to open casing to low pressure well head without corresponding auxiliary two
Therefore head dedicated unit needs to invent a kind of auxiliary casing to the oral device of underwater low pressure well.
Summary of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned prior art, a kind of structure is provided and is simply assisted under water to well
Mouthful device, using the underwater auxiliary to wellhead assembly and corresponding operation method, can be realized two open setting of casing safety, quickly into
It is oral to enter low pressure well.
To achieve the goals above, the technical solution adopted by the present invention is that: a kind of underwater auxiliary is to wellhead assembly, feature
Be: including symmetrically arranged two sets to shaft collar, two sets of edges to shaft collar are connected by door-hinge, relatively another
By switch locking, two sets are cylindrical in shape when locking to shaft collar at edge；
Described includes semi-circular buffering steel plate, spring, semi arch plate, semicircular cylinder stressed plate, semicircular ring bottom to shaft collar
Seat board, semicircular cylinder bearing base and lifting earrings, semicircular ring base plate bottom surface are welded on semicircular cylinder bearing base, semi arch
Plate, semicircular cylinder stressed plate are respectively welded on semicircular ring pedestal plate top surface, and the semi arch plate, semicircular cylinder stressed plate pass through respectively
Spring is connected with semi-circular buffering steel plate, and the medial surface of the semi-circular buffering steel plate is arcwall face, the lifting ear
Ring is arranged on semicircular cylinder bearing base.
Further, chain-falling is additionally provided between the semi-circular buffering steel plate and semicircular ring base plate.
Further, the lifting is welded on position among the semicircular cylinder bearing base.
Invention additionally discloses a kind of underwater auxiliary to well head operating method, above-mentioned underwater auxiliary is utilized to wellhead assembly,
Include the following steps as follows: (1) entering water:Underwater auxiliary is hung near ROV mechanical arm wellhead assembly；Check water
Lower auxiliary is to each unit status of wellhead assembly, it is ensured that safety；Wirerope both ends are connect with two lifting earrings with block is unloaded；It is caught among wirerope with ROV mechanical arm；Drilling platforms crane slings underwater auxiliary to wellhead assembly, in company with ROV mono-
It rises and is lauched and dives to seafloor wellhead locations.
(2) it installs:ROV at a distance observation well head, once two spud in head rise low pressure well it is oral after, do in well head head
The underwater auxiliary of installation prepares wellhead assembly out；After drill bit rises to a distance from well head head safety work, using ROV by water
Lower auxiliary to wellhead assembly cover low pressure well in word, and wirerope is pulled to the one side for being equipped with door-hinge；By ROV machinery
Arm is opened, and is moved to safety zone and is observed.
3) to well head:Setting of casing is oral and underwater auxiliary is to 10m above wellhead assembly or so to underwater low pressure well；
ROV is moved to suitable position observation well head situation；Casing is slowly transferred in observation, once casing float shoe contact two and half
Loop buffer steel plate can quickly transfer casing, it is made to enter low pressure well head along semi-circular buffering steel plate circular arc；Confirmation set
Pipe can be according to normal lowering velocity setting of casing after entering low pressure well head.
4) it dismantles:After casing enters low pressure well head, at mobile ROV to well head, touched using ROV mechanical arm underwater
Auxiliary opens it to wellhead assembly switch button；Mobile ROV is complete to wellhead assembly to assist under water to wirerope one side
It is complete to open, catch wirerope level to be assisted under water after being moved to safety zone to wellhead assembly in tow using ROV mechanical arm, it will
It takes the water surface out of.
The beneficial effects of the present invention are: structure is simple, easy to process, production cost is low, reusable, and when operation operates
It is convenient, can be realized two open setting of casing safely, to rapidly enter low pressure well oral, reduce marine environment to shaft mouth operation bring
It influences, is greatly improved to well head efficiency and safety.
Detailed description of the invention
The present invention is described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram in the present invention after two semicircular cylinder bearing base connections.
Fig. 3 is that two semi-circulars buffer the structural schematic diagram after steel plate combination in the present invention.
Fig. 4 is the structural schematic diagram in the present invention after two semicircular cylinder stressed plate combinations.
Specific embodiment
As shown in Figs 1-4, a kind of underwater auxiliary of the present invention is to wellhead assembly, including symmetrically arranged two sets to shaft collar
10, two sets of edges to shaft collar are connected by door-hinge 20, and opposite other edge is locked by switch 30, and two sets to well head
Structure 10 is cylindrical in shape when locking.
Described includes that semi-circular buffers steel plate 101, spring 102, semi arch plate 103, semicircular cylinder stress to shaft collar 10
Plate 104, semicircular ring base plate 105, chain-falling 106, semicircular cylinder bearing base 107 and lifting earrings 108.The semicircular ring base plate
105 bottom surfaces are welded on semicircular cylinder bearing base 107.Semi arch plate 103, semicircular cylinder stressed plate 104 are respectively welded at semicircular ring bottom
On 105 top surface of seat board.The semi arch plate 103, semicircular cylinder stressed plate 104 are buffered by spring 109 and the semi-circular respectively
Steel plate 101 is connected.The medial surface of the semi-circular buffering steel plate 101 is arcwall face, and the lifting earrings 108 is arranged in semicircle
On cylinder bearing base 107.
The both ends of the chain-falling 106 are connect with semi-circular buffering steel plate 101 with semicircular ring base plate 105 respectively.Entirely
6~9 chain-fallings are installed on device.
The lifting earrings 108 is welded on the intermediate position of semicircular cylinder bearing base 107.In this way, whole device has symmetrically
Two lifting earrings, be able to maintain stable lifting during installation.
Specifically, two above-mentioned semicircular cylinder bearing bases 107 are connected by two door-hinges 20, the opposite other side passes through switch 30
Locking, when locking, form hollow cylinder bearing base；To it is semi-open when for two hinged semicircular cylinder bearing bases.Cylinder
The internal diameter of bearing base is more normal than deep water to use the big 20cm of the oral outer diameter of low pressure well, and the outer diameter of cylinder bearing base is 110cm bigger than internal diameter, cylinder
Bearing base side wall be it is hollow, be welded by 10cm thick steel plate, entire cylinder bearing base height low pressure well more underwater than deep water is oral
The high 15cm of mud extraction height.
Above-mentioned two pieces of symmetrically arranged semicircular ring base plates 105, which respectively correspond, to be welded on cylinder bearing base, the circle of composition
Board bottom seat, for internal diameter as cylinder bearing base internal diameter, outer diameter is consistent with cylinder bearing base outer diameter, and plectane base thickness is 20cm,
It can be with cylinder bearing base open or close.
The cylinder stressed plate that above-mentioned two pieces of semicircular cylinder stressed plates 104 are combined into, outer diameter is consistent with cylinder bearing base outer diameter,
Wall thickness 15cm, cylinder stressed plate upper surface are evenly distributed with 6 or 12 circular holes, aperture 10cm, hole depth 5cm, for installing and fixing
The end of spring 109.
Above-mentioned two blocks of semi arch plates 103 are combined into arc of circle plate, and section is arc-shaped at 1/4, radius 40cm, arc end surface
Uniformly distributed 2~3 circular holes, aperture 10cm, hole depth 5cm, for installing and fixing the end of spring 109.Arc plate right-angle side end face
It is welded with cylinder stressed plate, welding position is the same radial orientation of cylinder stressed plate circular hole, another right-angle side end face weld of arc plate
It connects on plectane pedestal.
Above-mentioned two pieces of semi-circulars buffering steel plate 101 with a thickness of 15cm, at 1/4 circular ring shape, circular arc inner wall radius 65cm,
Exterior radius 80cm.There are circular hole, aperture 10cm, hole depth 5cm, circular hole position and arc plate on every semi-circular buffering steel plate inner wall
It is corresponding with cylinder stressed plate circular hole position, it is used to install and fix spring.109 diameter of spring and arc plate, cylinder by
Circularhole diameter on power plate, loop buffer steel plate matches, and each spring screen resilience when compressing 10cm can reach the left side 1~2t
The right side, spring are in point of neutralization length and are no less than 20cm.Each both ends of the spring is firmly welded on corresponding circular hole bottom face.
The state of above-mentioned door-hinge 20 and the switch 30 of cylinder bearing base is on the contrary, i.e. cylinder bearing base is in an open position
When, door-hinge 20 resets dynamics minimum, and when cylinder bearing base is in the closed position, it is maximum that door-hinge 20 resets dynamics.Door-hinge and corresponding
Junction is secured by being welded to connect.
Above-mentioned switch 30 is push-button switch, the button force phase that button force is provided with underwater robot ROV mechanical arm
Match, is welded on corresponding link position.
Auxiliary of the invention a kind of underwater specifically includes that steps are as follows to well head operating method:
(1) enter water:Underwater auxiliary is hung near ROV mechanical arm wellhead assembly；Check underwater auxiliary to well
Mouth each unit status of device, it is ensured that safety；Wirerope both ends are connect with two lifting earrings with block is unloaded；With ROV machinery
Arm is caught among wirerope；Drilling platforms crane slings underwater auxiliary to wellhead assembly, is lauched and dives together in company with ROV
To seafloor wellhead locations.
(2) it installs:ROV at a distance observation well head, once two spud in head rise low pressure well it is oral after, do in well head head
The underwater auxiliary of installation prepares wellhead assembly out；After drill bit rises to a distance from well head head safety work, using ROV by water
Lower auxiliary to wellhead assembly cover low pressure well in word, and wirerope is pulled to the one side for being equipped with door-hinge；By ROV machinery
Arm is opened, and is moved to safety zone and is observed.
3) to well head:Setting of casing is oral and underwater auxiliary is to 10m above wellhead assembly or so to underwater low pressure well；
ROV is moved to suitable position observation well head situation；Casing is slowly transferred in observation, once casing float shoe contact two and half
Loop buffer steel plate can quickly transfer casing, it is made to enter low pressure well head along semi-circular buffering steel plate circular arc；Confirmation set
Pipe can be according to normal lowering velocity setting of casing after entering low pressure well head.
4) it dismantles:After casing enters low pressure well head, at mobile ROV to well head, touched using ROV mechanical arm underwater
Auxiliary opens it to wellhead assembly switch button；Mobile ROV is complete to wellhead assembly to assist under water to wirerope one side
It is complete to open, catch wirerope level to be assisted under water after being moved to safety zone to wellhead assembly in tow using ROV mechanical arm, it will
It takes the water surface out of.
The above content is merely illustrative of the technical solution of the present invention, and those skilled in the art are to technology of the invention
The simple modification or equivalent replacement that scheme carries out, all without departing from the spirit and scope of technical solution of the present invention.
Claims (4)
1. a kind of underwater auxiliary is to wellhead assembly, it is characterised in that: including symmetrically arranged two sets to shaft collar, two sets to well
One edge of mouth structure is connected by door-hinge, and for opposite other edge by switch locking, two sets are in cylinder when locking to shaft collar
Shape；
It is described to shaft collar include semi-circular buffering steel plate, spring, semi arch plate, semicircular cylinder stressed plate, semicircular ring base plate,
Semicircular cylinder bearing base and lifting earrings, semicircular ring base plate bottom surface are welded on semicircular cylinder bearing base, semi arch plate, semicircle
Cylinder stressed plate be respectively welded on semicircular ring pedestal plate top surface, the semi arch plate, semicircular cylinder stressed plate pass through respectively spring with
The semi-circular buffering steel plate is connected, and the medial surface of the semi-circular buffering steel plate is arcwall face, the lifting earrings setting
On semicircular cylinder bearing base.
2. underwater auxiliary according to claim 1 is to wellhead assembly, it is characterised in that: the semi-circular buffering steel plate and half
Chain-falling is additionally provided between annulus base plate.
3. underwater auxiliary according to claim 1 or 2 is to wellhead assembly, it is characterised in that: the lifting earrings is welded on
Position among the semicircular cylinder bearing base.
4. a kind of well head operating method using underwater auxiliary as described in any one of claims 1-3 to wellhead assembly, spy
Sign is, includes the following steps as follows:
(1) enter water:Underwater auxiliary is hung near ROV mechanical arm wellhead assembly；Check underwater auxiliary to wellhead assembly
Each unit status, it is ensured that safety；Wirerope both ends are connect with two lifting earrings with block is unloaded；It is grabbed with ROV mechanical arm
Firmly among wirerope；Drilling platforms crane slings underwater auxiliary to wellhead assembly, is lauched and is dived to submarine well together in company with ROV
Mouth position；
(2) it installs:ROV at a distance observation well head, once two spud in head rise low pressure well it is oral after, do at well head head install
Underwater auxiliary prepares wellhead assembly；After drill bit rises to a distance from well head head safety work, it will be assisted under water pair using ROV
Wellhead assembly cover low pressure well in word, and wirerope is pulled to the one side for being equipped with door-hinge；ROV mechanical arm is opened,
Safety zone is moved to be observed；
3) to well head:Setting of casing is oral and underwater auxiliary is to 10m above wellhead assembly or so to underwater low pressure well；It is mobile
ROV to suitable position observe well head situation；Casing is slowly transferred in observation, is delayed once casing float shoe contacts two semi-circulars
Casing can quickly be transferred by rushing steel plate, it is made to enter low pressure well head along semi-circular buffering steel plate circular arc；Confirm that casing enters
It can be according to normal lowering velocity setting of casing after low pressure well head；
4) it dismantles:After casing enters low pressure well head, at mobile ROV to well head, underwater auxiliary pair is touched using ROV mechanical arm
Wellhead assembly switch button opens it；Mobile ROV on one side, fully opens wellhead assembly to assist under water to wirerope,
It catches wirerope level to be assisted under water after being moved to safety zone to wellhead assembly in tow using ROV mechanical arm, takes it out
The water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710873937.3A CN107476775B (en) | 2017-09-25 | 2017-09-25 | It is a kind of to assist under water to wellhead assembly and operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710873937.3A CN107476775B (en) | 2017-09-25 | 2017-09-25 | It is a kind of to assist under water to wellhead assembly and operating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107476775A CN107476775A (en) | 2017-12-15 |
| CN107476775B true CN107476775B (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710873937.3A Active CN107476775B (en) | 2017-09-25 | 2017-09-25 | It is a kind of to assist under water to wellhead assembly and operating method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343392A (en) * | 2018-03-28 | 2018-07-31 | 中海石油(中国)有限公司湛江分公司 | Auxiliary installation increases the device and application process of pipe |
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|---|---|---|---|---|
| US6330919B1 (en) * | 1996-03-08 | 2001-12-18 | Smith International, Inc. | Method of removing wellhead assemblies and cutting assembly for use therein |
| CN202108460U (en) * | 2011-06-10 | 2012-01-11 | 中国石油天然气集团公司 | Wellhead device used for ocean deep water well drilling |
| CN102733775A (en) * | 2012-07-12 | 2012-10-17 | 中国海洋石油总公司 | C-shaped plate for lifting well mouth |
| CN103397871A (en) * | 2013-08-14 | 2013-11-20 | 大连理工大学 | Dry-type Christmas tree based ultra-deepwater oil and gas development system and mounting method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203321407U (en) * | 2013-05-24 | 2013-12-04 | 重庆前卫海洋石油工程设备有限责任公司 | Christmas tree cap |
| CN205400653U (en) * | 2016-03-04 | 2016-07-27 | 苏州道森钻采设备股份有限公司 | Interior locking oil gas wellhead assembly |
| CN106741755B (en) * | 2016-12-16 | 2018-07-10 | 中国海洋石油集团有限公司 | The running tool of subsea control modules |
-
2017
- 2017-09-25 CN CN201710873937.3A patent/CN107476775B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6330919B1 (en) * | 1996-03-08 | 2001-12-18 | Smith International, Inc. | Method of removing wellhead assemblies and cutting assembly for use therein |
| CN202108460U (en) * | 2011-06-10 | 2012-01-11 | 中国石油天然气集团公司 | Wellhead device used for ocean deep water well drilling |
| CN102733775A (en) * | 2012-07-12 | 2012-10-17 | 中国海洋石油总公司 | C-shaped plate for lifting well mouth |
| CN103397871A (en) * | 2013-08-14 | 2013-11-20 | 大连理工大学 | Dry-type Christmas tree based ultra-deepwater oil and gas development system and mounting method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "半潜式钻井平台水下井口扶正技术及其现场实践";邵诗军等;<中国海上油气>;20111231;第23卷(第4期);第256-258页 * |
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| CN107476775A (en) | 2017-12-15 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: CNOOC (China) Limited Zhanjiang Branch Address before: Chinese CNOOC Building No. 25 Beijing 100010 Dongcheng District Chaoyangmen North Street Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC (China) Limited Zhanjiang Branch |
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