CN106761530A - A kind of emergent well-sealing device and method for deepwater drilling blowout out of control - Google Patents
A kind of emergent well-sealing device and method for deepwater drilling blowout out of control Download PDFInfo
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- CN106761530A CN106761530A CN201710028654.9A CN201710028654A CN106761530A CN 106761530 A CN106761530 A CN 106761530A CN 201710028654 A CN201710028654 A CN 201710028654A CN 106761530 A CN106761530 A CN 106761530A
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- 238000007789 sealing Methods 0.000 title claims abstract description 120
- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 230000004888 barrier function Effects 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 14
- 239000013043 chemical agent Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 4
- 238000011990 functional testing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000012224 working solution Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000009795 derivation Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
- E21B33/064—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers specially adapted for underwater well heads
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The present invention relates to a kind of emergent well-sealing device and method for deepwater drilling blowout out of control, it includes some module groups of well-sealing device under water, and each module of well-sealing device under water group includes connector, four-way, flow barrier module, short circuit part, upper binding head and throttle well killing module；Main channel is constituted by connector, four-way, flow barrier module, short circuit part and upper binding head；Connector bottom is used to be connected with accident well, and connector top is provided with four-way, and four-way is connected with a flowing barrier module bottom and throttle well killing module；The flow barrier module top is connected by short circuit part with another flow barrier module bottom, and another flow barrier module top is connected with upper binding head.The present invention well-sealing device can will be transported to accident well annex and carry out shut-in well treatment under water in the shorter time, reduce the loss that blowout is caused.The present invention can be used in the rescue after the failure of well control measure under water.
Description
Technical field
The present invention relates to a kind of deepwater oilfield Oil/gas Well security technology area, deepwater drilling well to be used for especially with regard to one kind
Spray emergent well-sealing device out of control and method.
Background technology
At present, marine (deep water that especially offshore is remote, environment is complicated) Oil/gas Well blowout out of control will cause catastrophic
Accident.Blowout blast in Macondo wells of the BP in the Gulf of Mexico, drilling platforms " deep water horizon " sinking, ground after 36 hours there is
Layer oil gas is persistently sprayed 87 days by pit shaft and preventer.Accident causes that 11 people are missing, 17 people are injured, in leaking into the Gulf of Mexico
Crude oil exceeded 4,000,000 barrels, the oil leak event as most serious in American history causes severe environments to Gulf of Mexico bank
Pollution, causes heavy economic losses, political crisis and social crisis, as an ecocatastrophe.After accident occurs, the public is to well
Emergency response after spray is out of control proposes new requirement, to successfully manage deep water gas blowout accident, it is necessary to a set of effective deep water
Blowout is met an urgent need well-filling techniques.
The content of the invention
Regarding to the issue above, it is an object of the invention to provide a kind of emergent well-sealing device for deepwater drilling blowout out of control
And method, it can be closed flow to the fluid of environment from pit shaft or fluid shunted, it is possible to achieve by well killing fluid, chemical drugs
The functions such as the key parameters such as pit shaft, wellbore pressure, temperature monitoring are injected in agent.
To achieve the above object, the present invention takes following technical scheme：A kind of meeting an urgent need for deepwater drilling blowout out of control
Well-sealing device, it is characterised in that：The module group of well-sealing device under water that the device is mutually communicated including several, it is each it is described under water
Well-sealing device module group includes connector, four-way, flow barrier module, short circuit part, upper binding head and throttle well killing module；By
The connector, four-way, flow barrier module, short circuit part and upper binding head constitute main channel；The connector bottom be used for
Accident well is connected, and the connector top is provided with the four-way, flow barrier module bottom and section described in the four-way and
Stream kill-job module connection；The flow barrier module top is connected by the short circuit part with another flow barrier module bottom
Connect, another flow barrier module top is connected with the upper binding head.
The throttle well killing module includes two throttle well killing pipelines, gate valve and choke valves；Two throttle well killing pipes
Cable architecture is identical, and one end of each throttle well killing pipeline is both connected on the four-way, and the other end is provided with the section
Stream valve；Several gate valves are additionally provided with each throttle well killing pipeline.
One end that the choke valve is provided with each throttle well killing pipeline contributes to provide borehole fluid
Derive well or pump into the interface of well killing fluid.
The flow barrier module is made up of more than one gate valve or is made up of more than one ball valve.
Control panel, the flow barrier module, throttle well killing module are additionally provided with the flow barrier module
Operated by underwater robot by the control panel；Chemical agent is additionally provided near the emergent well-sealing device
Tank, the chemical agent tank is connected to the control panel by chemical agent injection pipe line, and institute is controlled by the control panel
Chemical agent injection pipe line is stated to be connected with either component in the module group of well-sealing device under water.
The upper binding head top is additionally provided with pressure-bearing hat cone block.
The emergent well-sealing device also includes several storage modules；Each storage module is all disposed within described answering
Anxious well-sealing device nearby on mud face, is connected by power fluid supply pipeline, fly line with the emergent well-sealing device.
The interface of temperature, pressure monitoring is additionally provided with the main channel of the module group of well-sealing device under water, by under water
Robot carries out digital independent.
In the module group of well-sealing device under water at least two hangers are provided with least one part.
A kind of emergent shut-in well method for deepwater drilling blowout out of control based on said apparatus, it is characterised in that including with
Lower step：1) it is transported to from the assembling closer to the distance of accident well by each part in air transport under water well-sealing device module group
Area；2) depth of water according to accident well, well-sealing device operation liquid measure requirement and required well-sealing device are finally shunt in a well pressure, to institute
The pre- filling with inert gas of the accumulator for using in need；3) well-sealing device and control pipe under water are assembled according to order from top to bottom
Line, control panel；4) carry out functional test, pressure test to the well-sealing device under water for assembling, and rinse and all shunt in a well under water
Part in apparatus module group；5) accumulator is tested, and enters operation under being and re-fill working solution；6) envelope under water that will be assembled
Well device hangs in drilling platforms or working ship, carries out seaworthiness and fixes, and is transported under sea and enters position；7) well-sealing device master under water is confirmed
All parts are in open mode in passage, and throttle well killing pipeline is closed；8) will under water using drilling rod or steel wire rope
Enter under well-sealing device marine；9) by under well-sealing device under water to top trouble free service depth location to be shunt in a well, and with accident well
Safe lateral separation is kept, then stopping action；10) well-sealing device will be locked under water by the control panel of well-sealing device under water
On accident well, confirm whether it completes locking by carrying excessively, and carry out outside seal pressure test；11) by drilling rod or
Steel wire rope is separated with well-sealing device under water；12) enter under on the mud face near storage module to well-sealing device under water, will be all dynamic
Power liquid supply pipeline, chemical agent injection pipe line, fly line are connected with the control panel on well-sealing device under water；13) using under water
Throttle well killing pipeline, and monitoring well pressure and temperature are opened by robot；14) flow barrier module is closed using underwater robot, and
Monitoring well is pressed and temperature；15) the throttle well killing pipeline of well-sealing device under water, and monitoring well pressure and temperature are closed using underwater robot
Degree；16) underwater robot is moved into home, and observes whether well-sealing device under water has leakage；17) by underwater robot
Confirm that oil gas leakage has been completely controlled and has blocked；18) pressure-bearing hat cone block is entered under, to the top of well-sealing device under water, there is provided volume
Outer safety curtain, capping operation is completed.
Due to taking above technical scheme, it has advantages below to the present invention：1st, the present invention can be closed from pit shaft flow direction
The fluid of environment is shunted to fluid, using modularized design, package unit is resolved into smaller and lighter module, from
And overcome the device when drilling platforms or multifunctional engineering ship are installed to lifting weight, the limitation of parking space.2nd, the present invention
Each part after disassembling can carry out air transport, be easy in the shorter time will under water well-sealing device to be transported to accident well attached
Part carries out shut-in well treatment, reduces the loss that blowout is caused.The present invention can be used in the rescue after the failure of well control measure under water.
Brief description of the drawings
Fig. 1 is the emergent well-sealing device structural representation of the present invention；
Fig. 2 is that the present invention transfers scheme of installation by drilling rod；
Fig. 3 is that the present invention transfers scheme of installation by steel wire rope；
Fig. 4 is that the present invention is installed in place rear schematic diagram；
Fig. 5 is closing accident well schematic diagram of the present invention；
Fig. 6 is to enter the schematic diagram after pressure-bearing cap under the present invention；
Fig. 7 is the schematic diagram that the present invention carries out kill-job operation.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention provides a kind of emergent well-sealing device for deepwater drilling blowout out of control, the device is used for
Secondary control again is carried out to blowout out of control well, it includes several module groups of well-sealing device under water being mutually communicated, by respectively sealing under water
Well apparatus module group provides multiple interfaces that hydrate inhibitor is injected to well, and each module group of well-sealing device under water includes
Connector 1, four-way 2, flow barrier module 3, short circuit part 4, upper binding head 5 and throttle well killing module；Wherein, by connector 1, four
Logical 2, flow barrier module 3, short circuit part 4 and upper binding head 5 constitute main channel.The bottom of connector 1 is used to be connected simultaneously with accident well
Sealing, locking, the top of connector 1 are provided with four-way 2, and four-way 2 flows the bottom of barrier module 3 and throttle well killing module with one respectively
Connection；The top of flow barrier module 3 is connected by short circuit part 4 with another bottom of flow barrier module 3, another flow barrier mould
The top of block 3 is connected with upper binding head 5.The well-sealing device under water being made up of the assembling of some well-sealing device module groups carries out functional test
And pressure test.
In above-described embodiment, throttle well killing module includes two throttle well killing pipelines 6, choke valve 7 and gate valves 8.Two sections
The stream structure of kill line 6 is identical, and one end of each throttle well killing pipeline 6 is both connected on four-way 2, and the other end is provided with throttling
Valve 7.Several gate valves 8 are additionally provided with each throttle well killing pipeline 6.Wherein, set on each throttle well killing pipeline
The one end for having choke valve 7 to contribute to provide and derive well by borehole fluid or pump into the interface of well killing fluid.
In the various embodiments described above, flow barrier module 3 is made up of or by more than one ball valve structure more than one gate valve
Into high temperature, high pressure and lightweight can be born.
In the various embodiments described above, control panel 9 is additionally provided with flow barrier module 3.Flow barrier module 3, section
Stream kill-job module is operated by control panel 9 by underwater robot.Wherein, being additionally provided near emergent well-sealing device
Pharmacy jar is learned, chemical agent tank is connected to control panel 9, chemical drugs are controlled by control panel 9 by chemical agent injection pipe line
Agent injection pipeline is connected with either component in well-sealing device module group under water.
In the various embodiments described above, as shown in fig. 6, being located at the top of upper binding head 5 is additionally provided with pressure-bearing hat cone block 10, for carrying
For extra safety curtain.
In the various embodiments described above, emergent well-sealing device of the invention also includes several storage modules 11, each accumulator
Module 11 is all disposed near emergent well-sealing device on mud face, is connected by power fluid supply pipeline, fly line and emergent well-sealing device
Connect, for emergent well-sealing device provides hydraulic power.
In the various embodiments described above, the size and weight of all parts in well-sealing device module group all meet aviation fortune under water
The requirement that defeated and ship is installed, of length no more than 6.1 meters of each part, width is no more than 1.8 meters, and height is no more than 2.6 meters.And it is single
The weight of individual part is no more than 20 tons.
In the various embodiments described above, temperature, pressure monitoring are under water additionally provided with the main channel of well-sealing device module group and are connect
Mouthful, digital independent is carried out by underwater robot.
In the various embodiments described above, being provided with least two at least one part in well-sealing device module group under water is used for
The hanger 12 of hoisting module group.
In sum, when the present invention is used, before emergent well-sealing device is entered under, accident well is observed using underwater robot
Seabed situation, the barrier to that may hinder well-sealing device operation under water is cleared up, there is provided be available for emergent well-sealing device to connect
The well head for connecing or other tie points.As shown in Figure 2 and Figure 3, the emergent well-sealing device is transferred using drilling rod 13 or steel wire rope 14 to sit
Accident well top is sealed to, emergent well-sealing device is locked on accident well by underwater robot 15, confirmed by carrying excessively
Whether it completes locking, and carries out outside seal pressure test.
Dismountable running tool 16 is assembled on emergent well-sealing device upper binding head 5, connection perforated pipe 17 uses drilling rod 13
Under enter；By fashionable under drilling rod 13, connect perforated pipe 17 and enters at present together.Ensure that two flow barrier modules 3 are in before entering under to open
State is opened, the gate valve 8 near four-way 2 is closed preventing generating hydrate in decentralization process, remaining gate valve 8 is in be opened
State, choke valve 7 is in opening.
As shown in figure 4, removing running tool 16 or steel wire rope 14, the lock near four-way 2 is opened using underwater robot 15
Valve 8, two throttle well killing pipelines 6 are in open flow state.
As shown in figure 5, storage module 11 is transferred to mud face near well-sealing device under water, by fly line 18 and chain of command
Plate 9 is connected as flow barrier 3 and provides power source, and upper and lower flowing screen is closed successively by control panel using underwater robot 15
Barrier 3, borehole fluid is flowed out by two throttle well killing pipelines 6；Using the slowly closing choke valve 7 of underwater robot 15, stream in well
Body is only flowed out by wherein one throttle well killing pipeline 6, is closed on another throttle well killing pipeline using underwater robot 15
Gate valve 8, injecting chemical agent using underwater robot 15 prevents hydrate from generating blocking pipeline, is closed using underwater robot 15
Gate valve 8 on this throttle well killing pipeline, such throttle well killing pipeline 6 is completely closed；Closed using same operation sequence another
One throttle well killing pipeline 6, such underwater emergency well-sealing device is in full off state.By the temperature on underwater emergency well-sealing device
Spend the temperature, pressure change of pressure sensor monitoring accident well.Underwater robot is moved into home, and confirms that oil gas is revealed
Control completely and block.
As shown in fig. 6, under enter pressure-bearing hat cone block 10, pressure-bearing hat cone block 10 is locked to using underwater robot 15 is sealed under water
The top of well device upper binding head 5, for well-sealing device provides extra safety curtain under water, capping operation of meeting an urgent need is completed.
As shown in fig. 7, the dismounting choke valve 7 of underwater robot 15 can be as needed used, two throttle well killing pipelines 19 of connection,
20, pumping into carries out well killing fluid and carries out kill-job operation.
Based on above-mentioned emergent well-sealing device, the present invention also provides a kind of emergent shut-in well side for deepwater drilling blowout out of control
Method, it is comprised the following steps：
1) it is transported to from the assembling closer to the distance of accident well by each part in air transport under water well-sealing device module group
Area；
2) pressure that the depth of water according to accident well, well-sealing device operation liquid measure are required and required well-sealing device is finally shunt in a well
Power, to all pre- filling with inert gas of the accumulator for needing to use；
3) well-sealing device under water and control pipeline, control panel etc. are assembled according to order from top to bottom；
4) functional test, pressure test are carried out to the well-sealing device under water for assembling, and rinses all well-sealing devices under water
Part in module group, in case injection chemical agent；
5) accumulator is tested, and enters operation under being and re-fill working solution；
6) well-sealing device under water that will be assembled hangs in drilling platforms or working ship, carries out seaworthiness and fixes, and is transported under sea
Enter position；
Wherein, enter under well-sealing device under water it is marine before, the barrier to well-sealing device operation under water may be hindered
Cleared up；
7) confirm that all parts are in open mode in well-sealing device main channel under water, throttle well killing pipeline is in closes shape
State；
8) will be entered under well-sealing device under water using drilling rod or steel wire rope marine, and using fashionable under drilling rod, perforated pipe need to be connected,
Influence of the fluid that reduction accident blowout goes out to installing；
9) will be to top trouble free service depth location to be shunt in a well and horizontal with accident well holding safety under well-sealing device under water
To distance, then stopping action；
Wherein, accident well top will be delivered to by well-sealing device under water, will be aided in using underwater robot；
10) well-sealing device will be locked on accident well under water by the control panel of well-sealing device under water, be carried by crossing
To confirm whether it completes locking, and carry out outside seal pressure test；
11) drilling rod or steel wire rope are separated with well-sealing device under water；
12) enter under on the mud face near storage module to well-sealing device under water, by all power fluid supply pipelines, chemistry
Medicament injection pipeline, fly line are connected with the control panel on well-sealing device under water；
13) throttle well killing pipeline, and monitoring well pressure and temperature are opened using underwater robot；
14) flow barrier module, and monitoring well pressure and temperature are closed using underwater robot；
15) the throttle well killing pipeline of well-sealing device under water, and monitoring well pressure and temperature are closed using underwater robot；
16) underwater robot is moved into home, and observes whether well-sealing device under water has leakage；
17) confirm that oil gas is revealed by underwater robot to be completely controlled and blocked；
18) pressure-bearing hat cone block is entered under, to the top of well-sealing device under water, there is provided extra safety curtain, capping operation is completed.
In above steps, throttling arrangement can also be removed using underwater robot as needed, connect kill-job device, it is right
Accident well carries out kill-job operation.
The various embodiments described above are merely to illustrate the present invention, and the structure of each part, size, set location and shape all can be
It is varied from, on the basis of technical solution of the present invention, all improvement carried out to individual part according to the principle of the invention and waits
With conversion, should not exclude outside protection scope of the present invention.
Claims (10)
1. a kind of emergent well-sealing device for deepwater drilling blowout out of control, it is characterised in that：The device includes that several are mutual
The module group of well-sealing device under water of insertion, each well-sealing device module group under water includes connector, four-way, flow barrier
Module, short circuit part, upper binding head and throttle well killing module；By the connector, four-way, flow barrier module, short circuit part and on
Connector constitutes main channel；The connector bottom is used to be connected with accident well, and the connector top is provided with the four-way,
The four-way is connected with flow barrier module bottom described in one and throttle well killing module；The flow barrier module top is by described
Short circuit part is connected with another flow barrier module bottom, and another flow barrier module top connects with the upper binding head
Connect.
2. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is described
Throttle well killing module includes two throttle well killing pipelines, gate valve and choke valves；Two the throttle well killing line construction is identical, often
One end of one throttle well killing pipeline is both connected on the four-way, and the other end is provided with the choke valve；At each
Several described gate valves are additionally provided with the throttle well killing pipeline.
3. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 2, it is characterised in that：It is each
One end that the choke valve is provided with throttle well killing pipeline described in bar contributes to provide borehole fluid derivation well or pump
Enter the interface of well killing fluid.
4. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is described
Flow barrier module is made up of more than one gate valve or is made up of more than one ball valve.
5. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is located at
Control panel is additionally provided with the flow barrier module, the flow barrier module, throttle well killing module are by the control
Panel is operated by underwater robot；Chemical agent tank, the chemical drugs are additionally provided near the emergent well-sealing device
Agent tank is connected to the control panel by chemical agent injection pipe line, controls the chemical agent to inject by the control panel
Pipeline is connected with either component in the module group of well-sealing device under water.
6. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is described
Upper binding head top is additionally provided with pressure-bearing hat cone block.
7. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is described
Emergent well-sealing device also includes several storage modules；It is attached that each storage module is all disposed within the emergent well-sealing device
On nearly mud face, it is connected with the emergent well-sealing device by power fluid supply pipeline, fly line.
8. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is described
The interface of temperature, pressure monitoring is additionally provided with the main channel of well-sealing device module group under water, line number is entered by underwater robot
According to reading.
9. a kind of emergent well-sealing device for deepwater drilling blowout out of control as claimed in claim 1, it is characterised in that：It is described
Under water at least two hangers are provided with well-sealing device module group at least one part.
10. a kind of emergent shut-in well side for deepwater drilling blowout out of control based on such as any one of claim 1 to 9 described device
Method, it is characterised in that comprise the following steps：
1) it is transported to from accident well assembly section closer to the distance by each part in air transport under water well-sealing device module group；
2) depth of water according to accident well, well-sealing device operation liquid measure requirement and required well-sealing device are finally shunt in a well pressure, right
All pre- filling with inert gas of the accumulator for needing to use；
3) well-sealing device under water and control pipeline, control panel are assembled according to order from top to bottom；
4) functional test, pressure test are carried out to the well-sealing device under water for assembling, and rinses all well-sealing device modules under water
Part in group；
5) accumulator is tested, and enters operation under being and re-fill working solution；
6) well-sealing device under water that will be assembled hangs in drilling platforms or working ship, carries out seaworthiness and fixes, and is transported under sea and enters position
Put；
7) confirm that all parts are in open mode in well-sealing device main channel under water, throttle well killing pipeline is closed；
8) will be entered under well-sealing device under water using drilling rod or steel wire rope marine；
9) by under well-sealing device under water to top trouble free service depth location to be shunt in a well, and with accident well keep safety laterally away from
From then stopping action；
10) well-sealing device will be locked on accident well under water by the control panel of well-sealing device under water, be carried come really by crossing
Recognize whether it completes locking, and carry out outside seal pressure test；
11) drilling rod or steel wire rope are separated with well-sealing device under water；
12) enter under on the mud face near storage module to well-sealing device under water, by all power fluid supply pipelines, chemical agent
Injection pipeline, fly line are connected with the control panel on well-sealing device under water；
13) throttle well killing pipeline, and monitoring well pressure and temperature are opened using underwater robot；
14) flow barrier module, and monitoring well pressure and temperature are closed using underwater robot；
15) the throttle well killing pipeline of well-sealing device under water, and monitoring well pressure and temperature are closed using underwater robot；
16) underwater robot is moved into home, and observes whether well-sealing device under water has leakage；
17) confirm that oil gas is revealed by underwater robot to be completely controlled and blocked；
18) pressure-bearing hat cone block is entered under, to the top of well-sealing device under water, there is provided extra safety curtain, capping operation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028654.9A CN106761530A (en) | 2017-01-16 | 2017-01-16 | A kind of emergent well-sealing device and method for deepwater drilling blowout out of control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028654.9A CN106761530A (en) | 2017-01-16 | 2017-01-16 | A kind of emergent well-sealing device and method for deepwater drilling blowout out of control |
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| CN106761530A true CN106761530A (en) | 2017-05-31 |
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| CN201710028654.9A Pending CN106761530A (en) | 2017-01-16 | 2017-01-16 | A kind of emergent well-sealing device and method for deepwater drilling blowout out of control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878946A (en) * | 2021-01-27 | 2021-06-01 | 中国海洋石油集团有限公司 | Underwater blowout preventer system for well killing of deep water relief well and well killing method |
| CN114320275A (en) * | 2022-01-05 | 2022-04-12 | 中海石油(中国)有限公司 | Emergency release working condition simulation test method |
| CN115234187A (en) * | 2022-07-18 | 2022-10-25 | 中国石油大学(华东) | Be adapted to marine emergent well plugging quick connecting device that adjusts well |
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| CN115234187B (en) * | 2022-07-18 | 2024-04-12 | 中国石油大学(华东) | Quick connecting device suitable for offshore emergency well sealing alignment |
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