CN113969912A - Shearing blowout preventer control device, blowout preventer control system and blowout preventer system - Google Patents
Shearing blowout preventer control device, blowout preventer control system and blowout preventer system Download PDFInfo
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- CN113969912A CN113969912A CN202010716024.2A CN202010716024A CN113969912A CN 113969912 A CN113969912 A CN 113969912A CN 202010716024 A CN202010716024 A CN 202010716024A CN 113969912 A CN113969912 A CN 113969912A
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- 238000010008 shearing Methods 0.000 title claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 238000005553 drilling Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 230000017105 transposition Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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
- 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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31594—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having multiple pressure sources and multiple output members
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a shearing blowout preventer control device, a blowout preventer control system and a blowout preventer system, wherein the shearing blowout preventer control device comprises: a first oil supply device capable of supplying pressure fluid; a first rotary valve having a first inlet connected to the first oil supply, a second inlet for connection to the second oil supply, and a rotary valve outlet; the second rotary valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the rotary valve outlet, the second valve port is connected with an oil return tank, and the third valve port and the fourth valve port are used for being connected with the blowout preventer. According to the invention, the technical problem that a blowout preventer control system is easily damaged due to the introduction of power fluid with higher pressure when the shear ram blowout preventer runs is solved.
Description
Technical Field
The invention relates to the field of oil exploitation equipment, in particular to a shearing blowout preventer control device, a blowout preventer control system and a blowout preventer system.
Background
The blowout preventer control device is mainly used for controlling blowout preventer groups, the blowout preventer groups are divided into land/water blowout preventer control devices and underwater blowout preventer control devices, and the blowout preventer control devices are also divided into land/water blowout preventer control devices and underwater blowout preventer control devices according to different control objects. When an emergency such as a blowout occurs in the land/water drilling process, the blowout preventer needs to be closed timely. The conventional well shut-in operation comprises the steps of firstly closing the annular blowout preventer and then closing the semi-closed/fully-closed ram blowout preventer, if the well mouth cannot be controlled by the operation at the moment, the blowout is in an out-of-control state, the shearing blowout preventer is closed emergently, a drilling tool in the well is sheared, and the well mouth is controlled.
In the operation of using the shearing ram blowout preventer to shear a drilling tool and shut in a well, the operation is as follows: opening a bypass valve of a blowout preventer control device, and closing the shearing ram blowout preventer by using the rated system pressure of 21MPa until a drilling tool in the well is sheared; if the drilling tool cannot be sheared, the pressure is increased until the drilling tool is sheared. The blind ram blowout preventer is then closed, and the blind ram blowout preventer and the shear ram blowout preventer are manually locked.
The blowout preventer control device is a safety device for ensuring normal drilling, and the well control safety is a key for ensuring safe production and operation. In an emergency, if the operating pressure does not meet the requirements of an accident situation, the blowout is easy to be out of control, and serious consequences are caused. Such as: when well blowout occurs in certain well construction operation, due to the fact that a drill rod needs to be cut urgently and is accidentally cut into a drill collar, the cutting pressure is insufficient, the best well closing time is lost, manpower and financial resources are lost, and negative effects are caused,
blowout preventer control devices with a rated pressure of 35MPa are often used for controlling subsea blowout preventers. For land/water blowout preventer stacks, only shear ram blowout preventers require higher pressure, and annular blowout preventers, semi-closed ram blowout preventers, and fully-closed ram blowout preventers require lower pressure, so blowout preventer control devices with a rated pressure of 21MPa are generally adopted; when high-pressure shearing is needed, a land/water rig mostly adopts a method of introducing high-pressure power liquid into a blowout preventer control device with the pressure of 21MPa for pressurization, and a pneumatic oil pump and the like can be used for enabling the power liquid pressure of the blowout preventer control device to be higher than 21MPa until a drilling tool is sheared.
According to the use condition of the shear ram in a drilling site, the operation pressure for finally closing the shear ram is easily higher than 26MPa under the unexpected conditions that a shearing drilling tool is sheared to a joint and the like, while the system pressure of a conventional blowout preventer control device is 21MPa, the process of introducing high-pressure power fluid for pressurization possibly causes well closing delay, increases the well control difficulty and misses the optimal well closing time. And moreover, potential safety hazards can be caused to the whole blowout preventer control system by introducing power fluid with pressure greater than 21MPa to close the shearing ram, and particularly when the power fluid with pressure greater than 26MPa is introduced for many times to close the shearing ram blowout preventer, the damage to the whole blowout preventer control system is particularly serious, the later normal use and maintenance of equipment are seriously affected, and the potential safety hazards are caused to well control safety in the drilling process.
Therefore, when a blowout preventer group on land/water runs and a shear ram blowout preventer, the well closing delay is increased and the well control difficulty is increased due to the introduction of power fluid with higher pressure, and a blowout preventer control system is easily damaged, so that hidden dangers are brought to the well control safety in the drilling process.
Disclosure of Invention
The invention aims to provide a control device of a shearing blowout preventer, a control system of the shearing blowout preventer and a blowout preventer system, which are used for solving the technical problem that the control system of the shearing blowout preventer is easy to damage due to the introduction of power fluid with high pressure when the shearing ram blowout preventer runs.
The above object of the present invention can be achieved by the following technical solutions:
the present invention provides a control device for a shearing blowout preventer, comprising:
a first oil supply device capable of supplying pressure fluid;
a first rotary valve having a first inlet connected to the first oil supply, a second inlet for connection to a second oil supply, and a rotary valve outlet; the first rotary valve can be switched to be connected with the first inlet and the rotary valve outlet or connected with the second inlet and the rotary valve outlet;
the second rotary valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the rotary valve outlet, the second valve port is connected with an oil return tank, and the third valve port and the fourth valve port are used for being connected with the blowout preventer; the second rotary valve can be switched to a state that the first port is connected with the third port and the second port is connected with the fourth port, or the first port is connected with the fourth port and the second port is connected with the third port.
In a preferred embodiment, the first oil supply means comprises an accumulator and a pump stack, the pump stack comprising an electric pump means and an air pump means, the electric pump means and the air pump means being connected in parallel to the first inlet via a liquid supply line, the accumulator being connected in parallel to the liquid supply line.
In a preferred embodiment, the air pump device includes an air pump and an air pump hydraulic control valve, the air pump hydraulic control valve has an air inlet, an air outlet and a hydraulic control port, the air inlet is used for being connected with an air source, the air outlet is connected with the air pump, the hydraulic control port is connected with the liquid supply pipeline, the air pump hydraulic control valve can enable the air inlet to be communicated with the air outlet when the pressure of the hydraulic control port is less than a set value, and the air inlet can be disconnected with the air outlet when the pressure of the hydraulic control port is greater than or equal to the set value.
In a preferred embodiment, the shear blowout preventer control apparatus comprises a relief valve connected between the first inlet and the first oil supply.
In a preferred embodiment, the shear blowout preventer control apparatus comprises a remote control pod connected to the first rotary valve and the second rotary valve.
In a preferred embodiment, the shear blowout preventer control apparatus comprises a pressure regulating valve connected to the second inlet through which the second inlet is connectable to the second oil supply.
In a preferred embodiment, the shear blowout preventer control apparatus comprises a pressure regulating valve; the second oil liquid supply device and the first oil liquid supply device are the same, the second inlet is connected with the first oil liquid supply device, and the pressure regulating valve is connected between the second inlet and the first oil liquid supply device.
The present invention provides a blowout preventer control system, comprising: a blowout preventer control apparatus and a shear blowout preventer control apparatus as described above, the blowout preventer control apparatus being capable of providing a pressurized fluid to actuate opening and closing of the blowout preventer.
In a preferred embodiment, the second oil supply in the shear blowout preventer control apparatus is the blowout preventer control apparatus; or, the shearing blowout preventer control device comprises a pressure regulating valve, a second oil supply device in the shearing blowout preventer control device is the same as the first oil supply device, the second inlet is connected with the first oil supply device, the pressure regulating valve is connected between the second inlet and the first oil supply device, the shearing blowout preventer control device is connected with the first inlet, and a check valve for preventing oil from flowing to the shearing blowout preventer control device is arranged between the shearing blowout preventer control device and the first inlet.
The present invention provides a blowout preventer system, comprising:
a plurality of blowout preventers, a plurality of the blowout preventers comprising full ram blowout preventers and shear ram blowout preventers;
the blowout preventer control system described above;
the blowout preventer control device is connected with the full-seal ram blowout preventer to control the opening and closing of the full-seal ram blowout preventer;
the shear ram preventer control device is connected with the shear ram preventer to control opening and closing of the shear ram preventer.
The invention has the characteristics and advantages that:
the shear ram preventer is connected with the control device of the shear ram preventer, and the flow direction of power fluid flowing into the shear ram preventer can be controlled through the second rotary valve, so that the opening and closing of the shear ram preventer are controlled.
The first rotary valve is connected with the first oil liquid supply device and the second oil liquid supply device, and the first oil liquid supply device can be selected to supply power liquid or the second oil liquid supply device can be selected to supply power liquid through the first rotary valve.
The shear blowout preventer control apparatus may be used in conjunction with existing blowout preventer control apparatus. The control device of the blowout preventer provides power fluid with lower pressure to control the opening and closing of the annular blowout preventer, the semi-closed ram blowout preventer and the full-closed ram blowout preventer; the blowout preventer control device simultaneously serves as a second oil supply device, and the blowout preventer control device is connected with the second inlet. The first oil supply device provides pressure fluid at a relatively high pressure.
In operation, first, the first rotary valve is switched to a state that the second inlet is connected with the rotary valve outlet, and pressure fluid is provided by the blowout preventer control device to drive the shear ram blowout preventer; when the pressure of the pressure fluid is insufficient, the first rotary valve is switched to a state that the first inlet is connected with the valve outlet, and the pressure fluid is provided by the first oil fluid supply device to drive the shearing ram blowout preventer, so that the shearing ram blowout preventer can move in place in time.
When the control device of the shearing blowout preventer is used for the shearing ram blowout preventer, pipelines for supplying pressure fluid can be switched when large pressure is needed, the pressure fluid is supplied by the first oil fluid supply device for supplying the pressure fluid with high pressure, and the timely closing of the shearing ram blowout preventer is guaranteed. The supplied high-pressure fluid flows to the shear ram blowout preventer through the first rotary valve and the second rotary valve, so that the influence and damage on the existing blowout preventer control device are reduced, and the stable operation of the whole blowout preventer control system is facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a control device for a shear blowout preventer according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic illustration of an air pump arrangement in the shear blowout preventer control apparatus of FIG. 1;
FIG. 4 is a schematic view of a first embodiment of a control system of a blowout preventer provided in accordance with the present invention;
FIG. 5 is a schematic view of a second embodiment of a blowout preventer control system provided in accordance with the present invention;
fig. 6 is a partially enlarged view of fig. 5 at B.
The reference numbers illustrate:
10. a first oil supply device; 11. a pump group; 12. an accumulator; 13. an oil tank; 14. a liquid supply line;
111. an electric pump device; 112. an air pump device; 113. an air pump; 114. an air pump hydraulic control valve; 1141. a gas inlet; 1142. a gas outlet; 1143. a hydraulic control port;
20. a second oil supply device;
31. a first rotary valve; 311. a first inlet; 312. a second inlet; 313. an outlet of the rotary valve;
32. a second rotary valve; 321. a first valve port; 322. a second valve port; 323. a third valve port; 324. a fourth valve port;
33. a transposition cylinder;
41. a pressure regulating valve; 42. an overflow valve; 43. a one-way valve;
50. a remote control box;
60. a blowout preventer control device; 61. a control device pump unit; 62. a control device accumulator; 63. a control valve; 64. air motor pressure regulating valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The present invention provides a control device of a shearing blowout preventer, as shown in fig. 1 and 2, comprising: a first oil supply device 10, a first rotary valve 31 and a second rotary valve 32; the first oil supply device 10 can provide pressure fluid; the first rotary valve 31 has a first inlet 311, a second inlet 312 and a rotary valve outlet 313, the first inlet 311 is connected with the first oil supply device 10, and the second inlet 312 is used for connecting with the second oil supply device 20; the first rotary valve 31 can be switched to be connected with the first inlet 311 and the rotary valve outlet 313 or connected with the second inlet 312 and the rotary valve outlet 313; the second rotary valve 32 is provided with a first valve port 321, a second valve port 322, a third valve port 323 and a fourth valve port 324, the first valve port 321 is connected with the rotary valve outlet 313, the second valve port 322 is connected with an oil return tank, and the third valve port 323 and the fourth valve port 324 are used for being connected with a blowout preventer; the second rotary valve 32 can be switched to a state in which the first port 321 is connected to the third port 323 and the second port 322 is connected to the fourth port 324, or the first port 321 is connected to the fourth port 324 and the second port 322 is connected to the third port 323.
By connecting the shear ram preventer with the shear preventer control apparatus provided by the present invention, the direction of flow of power fluid into the shear ram preventer can be controlled via the second rotary valve 32, thereby controlling the opening and closing of the shear ram preventer.
The first rotary valve 31 is connected to the first oil supply device 10 and the second oil supply device 20, and the first oil supply device 10 may be selected to supply power fluid or the second oil supply device 20 may be selected to supply power fluid through the first rotary valve 31.
As shown in fig. 4, the shear blowout preventer control apparatus may be used in conjunction with an existing blowout preventer control apparatus 60. The blowout preventer control device 60 supplies power fluid at a relatively low pressure to control the opening and closing of the annular blowout preventer, the semi-closed ram blowout preventer and the fully-closed ram blowout preventer; the blowout preventer control apparatus 60 also acts as the second oil supply 20 in the shear blowout preventer control apparatus, the blowout preventer control apparatus 60 being connected to the second inlet 312. The first oil supply device 10 supplies pressure fluid at a relatively high pressure.
In operation, first, the first rotary valve 31 is switched to a state in which the second inlet 312 is connected to the rotary valve outlet 313, and pressure fluid is provided by the blowout preventer control device to drive the shear ram blowout preventer; when the pressure of the pressure fluid is insufficient, the first rotary valve 31 is switched to a state that the first inlet is connected with the valve outlet, and the pressure fluid is provided by the first oil fluid supply device 10 to drive the shear ram blowout preventer, so that the shear ram blowout preventer can move in place in time.
The control device of the shearing blowout preventer is used for controlling the shearing ram blowout preventer, can switch pipelines for supplying pressure fluid when large pressure is needed, and supplies the pressure fluid by the first oil fluid supply device 10 for supplying the pressure fluid with high pressure, so that the timely closing of the shearing ram blowout preventer is guaranteed. The supplied high-pressure fluid flows to the shear ram blowout preventer through the first rotary valve 31 and the second rotary valve 32, so that the influence and damage on the existing blowout preventer control device are reduced, and the stable operation of the whole blowout preventer control system is facilitated.
At present, the system pressure of a conventional blowout preventer control device is 21MPa, a standby power source is introduced to provide higher pressure required by a shearing ram blowout preventer, the process of introducing higher-pressure power liquid for pressurization may cause well shut-in delay, well control difficulty is increased, the best well shut-in opportunity is missed, and the problem that the shearing blowout preventer cannot be immediately closed under emergency exists.
As shown in figure 4, the shearing blowout preventer control device is suitable for being matched with the existing blowout preventer control device for use, a high-pressure shearing function is added on the existing blowout preventer control device, the control requirements on a blowout preventer group are met, and the shearing blowout preventer control device is economical, convenient and practical. The existing blowout preventer control apparatus serves as the second oil supply apparatus 20, and the pressure of the pressure fluid supplied from the second oil supply apparatus 20 is lower than the pressure of the pressure fluid supplied from the first oil supply apparatus 10. To accommodate a blowout preventer, the second oil supply 20 typically supplies 21MPa of pressure fluid and the first oil supply 10 35MPa of pressure fluid.
The shearing blowout preventer control device is used for land/water drilling rigs, can meet the high-pressure power liquid requirement of a shearing ram blowout preventer as high as 35MPa, is suitable for blowout preventer groups needing high-pressure control such as deep wells, ultra-deep wells, complex wells and the like, is suitable for being matched with land and offshore platform drilling equipment, meets the pressure requirement and the well control safety requirement in the drilling process, and ensures the safety control of the blowout preventer groups and the stable operation of the blowout preventer control device in the drilling process.
In one embodiment of the invention, the shear blowout preventer control apparatus comprises a pressure regulating valve 41, the pressure regulating valve 41 being connected to a second inlet 312, the second inlet 312 being connectable to the second oil supply 20 via the pressure regulating valve 41. In operation, firstly, the second inlet 312 is communicated with the rotary valve outlet 313, and the pressure of pressure fluid for supplying the shear ram blowout preventer can be gradually increased within the range of 0-21 MPa by adjusting the pressure regulating valve 41; when the pressure is increased to 21MPa and shearing is not finished, the first rotary valve 31 is switched to the state that the first inlet 311 is connected with the rotary valve outlet 313, and the pressure fluid of 35MPa provided by the first oil supply device 10 is supplied to the shearing ram blowout preventer, so that the pressure of the pressure fluid is rapidly increased, and the timely closing of the shearing ram blowout preventer is facilitated. Preferably, no pressure regulating valve is arranged between the first inlet 311 and the first oil supply device 10, so that when the 21MPa shearing cannot be completed, the pressure of the pressure fluid is directly increased to 35MPa, and the regulating time is shortened.
In one embodiment, as shown in fig. 4, the shear blowout preventer control apparatus is used in combination with a conventional blowout preventer control apparatus 60, the blowout preventer control apparatus 60 serves as the second oil supply apparatus 20, and the pressure regulating valve 41 regulates and controls the pressure output from the blowout preventer control apparatus 60.
In another embodiment, as shown in fig. 5, the second oil supply device 20 is the same as the first oil supply device 10, the second inlet 312 is connected to the first oil supply device 10, and the pressure regulating valve 41 is connected between the second inlet 312 and the first oil supply device 10. The first oil supply device 10 can supply 35MPa of pressure fluid, and the regulation range of the pressure regulating valve 41 can be 0-21 MPa, so that the pressure range of the pressure fluid at the second inlet 312 is controlled to be 0-21 MPa.
As shown in fig. 1, the shear blowout preventer control apparatus includes a relief valve 42, the relief valve 42 being connected between the first inlet 311 and the first oil supply 10. The pressure of the pressure fluid flowing into the first rotary valve 31 from the first oil supply device 10 is not more than 1.1 times of the rated pressure through the overflow valve 42, specifically, the pressure is not more than 38.5MPa, and the safety of the equipment is ensured.
In one embodiment of the present invention, the control apparatus of the shearing blowout preventer includes a remote control box 50, as shown in fig. 1, the remote control box 50 being connected to the first rotary valve 31 and the second rotary valve 32. The first and second rotary valves 31 and 32 are remotely controlled to switch states by a remote control box 50 so as to control the opening and closing of the shear ram blowout preventer in time.
As shown in fig. 1, the first oil supply device 10 includes an accumulator 12 and a pump group 11, the pump group 11 including an electric pump device 111 and an air pump device 112, the electric pump device 111 and the air pump device 112 being connected in parallel to the first inlet 311 via the feed line 14, and the accumulator 12 being connected in parallel to the feed line 14. The electric pump device 111 and the air pump device 112 are both connected to the oil tank 13, and drive the oil in the oil tank 13 to flow to the first rotary valve 31, and the accumulator 12 plays a role in stabilizing the pressure of the pressure fluid in the fluid supply line 14, and the number of the accumulators 12 may be multiple. In an embodiment of the invention, the pump group 11 comprises a plurality of electric pumping means 111 to facilitate a stable supply of pressure fluid.
Further, as shown in fig. 1 and fig. 3, the air pump device 112 includes an air pump 113 and an air pump hydraulic control valve 114, the air pump hydraulic control valve 114 has an air inlet 1141, an air outlet 1142 and a hydraulic control port 1143, the air inlet 1141 is used for being connected to an air source, the air outlet 1142 is connected to the air pump 113, the hydraulic control port 1143 is connected to the liquid supply pipeline 14, the air pump hydraulic control valve 114 can enable the air inlet 1141 to be communicated with the air outlet 1142 when the pressure of the hydraulic control port 1143 is less than a set value, and can enable the air inlet 1141 to be disconnected from the air outlet 1142 when the pressure of the hydraulic control port 1143 is greater than or equal to the set value. In operation of the pump unit, the electric pump unit 111 acts as a main pump. The air pump pilot operated valve 114 may be automatically opened and closed to control the start and stop of the air pump 113 based on the pressure in the liquid supply line 14, and the air pump 113 compensates for the pressure in the liquid supply line 14 to help stabilize the pressure and flow of the pressurized liquid in the liquid supply line 14.
In an embodiment of the present invention, the first rotary valve 31 is a two-position four-way rotary valve, the second rotary valve 32 is a three-position four-way rotary valve, and the second rotary valve 32 can be switched to a state in which the first port 321, the second port 322, the third port 323, and the fourth port 324 are blocked from each other, and in this state, the blowout preventer controlled by the shear ram blowout preventer control device is maintained at the original position. The two-position four-way rotary valve and the three-position four-way rotary valve can be respectively connected with a transposition cylinder 33, and the remote control box 50 is connected with the transposition cylinder 33 to control the transposition cylinder 33 to act, so that the two-position four-way rotary valve or the three-position four-way rotary valve is driven to switch states.
The control device of the shearing blowout preventer can be applied to control the shearing ram blowout preventer and can also be applied to control other blowout preventers which need higher pressure fluid.
Example two
The present invention provides a blowout preventer control system, as shown in fig. 4 or 5, comprising: a blowout preventer control apparatus 60 and the shear blowout preventer control apparatus described above, the blowout preventer control apparatus 60 being capable of providing pressurized fluid to actuate opening and closing of the blowout preventer.
The blowout preventer control apparatus 60 comprises a control apparatus pump stack 61 and a control apparatus accumulator 62, which may be provided with a plurality of control valves 63 for connection with the blowout preventer, which may provide 21MPa of pressure fluid for controlling the annular blowout preventer, the half ram blowout preventer and the full ram blowout preventer. The shear ram preventer control device may provide 35MPa of pressure fluid that may be used to control a shear ram preventer. The blowout preventer control system is suitable for controlling land blowout preventers and water blowout preventers and can be designed according to field requirements. In one embodiment, an air motor pressure regulating valve 64 is connected in-line with one of the control valves 63, and the air motor pressure regulating valve 64 is connected to the remote control box 50.
In one embodiment of the invention, the second oil supply 20 of the shear blowout preventer control apparatus is the blowout preventer control apparatus 60, and as shown in fig. 4, the blowout preventer control apparatus 60 is connected to the second inlet 312.
In another embodiment of the invention, the control device of the shearing blowout preventer comprises a pressure regulating valve 41, the second oil supply 20 of the control device of the shearing blowout preventer is identical to the first oil supply 10, as shown in fig. 5 and 6, and the first inlet 311 is connected to the first oil supply 10; the second inlet 312 is connected to the first oil supply device 10, the pressure regulating valve 41 is connected between the second inlet 312 and the first oil supply device 10, the blowout preventer control device 60 is connected to the first inlet 311, and a check valve 43 for preventing the flow of oil to the blowout preventer control device 60 is provided between the blowout preventer control device 60 and the first inlet 311.
The pressure of the pressure fluid flowing to the second inlet 312 can be controlled within a range of 0 to 21MPa by the pressure regulating valve 41. The blowout preventer control device 60 is connected with the first inlet 311, and when the first oil supply device 10 fails, the blowout preventer control device 60 can provide pressure fluid to maintain the operation of the shearing blowout preventer control device; when the first oil supply device 10 supplies oil, the check valve 43 can prevent the pressure fluid with higher pressure from flowing to the blowout preventer control device 60, so as to prevent the blowout preventer control device from being damaged.
EXAMPLE III
The present invention provides a blowout preventer system, comprising: the blowout preventer control system and plurality of blowout preventers described above; the plurality of blowout preventers comprises a full ram blowout preventer and a shear ram blowout preventer; the blowout preventer control apparatus 60 is connected to the blind ram blowout preventer to control opening and closing of the blind ram blowout preventer; a shear ram preventer control device is connected to the shear ram preventer to control opening and closing of the shear ram preventer.
The blowout preventer control system can provide high-pressure fluid to drive the shearing ram blowout preventer to close, the reliability is high, and the damage of the high-pressure fluid to the blowout preventer control system is reduced. After the shearing ram blowout preventer is closed, the blowout preventer control system controls the full-seal ram blowout preventer to close so as to seal the wellhead.
The plurality of blowout preventers may also include other types of blowout preventers, including, for example, one or more of annular blowout preventers and semi-ram blowout preventers.
The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.
Claims (10)
1. A control device for a shear blowout preventer, comprising:
a first oil supply device capable of supplying pressure fluid;
a first rotary valve having a first inlet connected to the first oil supply, a second inlet for connection to a second oil supply, and a rotary valve outlet; the first rotary valve can be switched to be connected with the first inlet and the rotary valve outlet or connected with the second inlet and the rotary valve outlet;
the second rotary valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the rotary valve outlet, the second valve port is connected with an oil return tank, and the third valve port and the fourth valve port are used for being connected with the blowout preventer; the second rotary valve can be switched to a state that the first port is connected with the third port and the second port is connected with the fourth port, or the first port is connected with the fourth port and the second port is connected with the third port.
2. A control apparatus as claimed in claim 1, wherein the first oil supply means comprises an accumulator and a pump package, the pump package comprising an electric pump means and an air pump means, the electric and air pump means being connected in parallel to the first inlet via a feed line, the accumulator being connected in parallel to the feed line.
3. A control device for a shear blowout preventer according to claim 2, wherein the air pump device comprises an air pump and an air pump hydraulic control valve, the air pump hydraulic control valve has an air inlet, an air outlet and a hydraulic control port, the air inlet is configured to be connected to an air source, the air outlet is connected to the air pump, the hydraulic control port is connected to the liquid supply line, the air pump hydraulic control valve is configured to communicate the air inlet with the air outlet when the pressure at the hydraulic control port is less than a set value, and to disconnect the air inlet from the air outlet when the pressure at the hydraulic control port is greater than or equal to the set value.
4. A shear blowout preventer control apparatus according to claim 1, comprising an overflow valve connected between the first inlet and the first oil supply.
5. A shear blowout preventer control apparatus according to claim 1, comprising a remote control pod connected to the first rotary valve and the second rotary valve.
6. A shear bop control apparatus according to claim 1, comprising a pressure regulating valve connected to the second inlet, the second inlet being connectable to the second oil supply via the pressure regulating valve.
7. A shear blowout preventer control apparatus according to claim 1, comprising a pressure regulating valve; the second oil liquid supply device and the first oil liquid supply device are the same, the second inlet is connected with the first oil liquid supply device, and the pressure regulating valve is connected between the second inlet and the first oil liquid supply device.
8. A blowout preventer control system, comprising: a blowout preventer control apparatus and a shear blowout preventer control apparatus as claimed in any one of claims 1 to 5, the blowout preventer control apparatus being capable of providing pressure fluid to drive opening and closing of the blowout preventer.
9. The blowout preventer control system of claim 8, wherein the second oil supply in the shear blowout preventer control device is the blowout preventer control device;
or, the shearing blowout preventer control device comprises a pressure regulating valve, a second oil supply device in the shearing blowout preventer control device is the same as the first oil supply device, the second inlet is connected with the first oil supply device, the pressure regulating valve is connected between the second inlet and the first oil supply device, the shearing blowout preventer control device is connected with the first inlet, and a check valve for preventing oil from flowing to the shearing blowout preventer control device is arranged between the shearing blowout preventer control device and the first inlet.
10. A blowout preventer system, comprising:
a plurality of blowout preventers, a plurality of the blowout preventers comprising full ram blowout preventers and shear ram blowout preventers;
the blowout preventer control system of claim 8 or claim 9;
the blowout preventer control device is connected with the full-seal ram blowout preventer to control the opening and closing of the full-seal ram blowout preventer;
the shear ram preventer control device is connected with the shear ram preventer to control opening and closing of the shear ram preventer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010716024.2A CN113969912A (en) | 2020-07-23 | 2020-07-23 | Shearing blowout preventer control device, blowout preventer control system and blowout preventer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010716024.2A CN113969912A (en) | 2020-07-23 | 2020-07-23 | Shearing blowout preventer control device, blowout preventer control system and blowout preventer system |
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| CN113969912A true CN113969912A (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010716024.2A Pending CN113969912A (en) | 2020-07-23 | 2020-07-23 | Shearing blowout preventer control device, blowout preventer control system and blowout preventer system |
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