CN117404032A - Prevent multistage remote control formula choke manifold device of blowout - Google Patents
Prevent multistage remote control formula choke manifold device of blowout Download PDFInfo
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- CN117404032A CN117404032A CN202311715972.4A CN202311715972A CN117404032A CN 117404032 A CN117404032 A CN 117404032A CN 202311715972 A CN202311715972 A CN 202311715972A CN 117404032 A CN117404032 A CN 117404032A
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- 239000002002 slurry Substances 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 230000002265 prevention Effects 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000001960 triggered effect Effects 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/106—Valve arrangements outside the borehole, e.g. kelly valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a blowout-preventing multi-stage remote control type choke manifold device, and relates to the field of petroleum drilling equipment. The scheme is proposed now that it includes flat valve and initiative pressure release judging unit, be equipped with the reposition of redundant personnel case that is used for the reposition of redundant personnel on the flat valve, be equipped with the relief valve to reposition of redundant personnel case initiative pressure release and passive pressure release on the reposition of redundant personnel case, initiative pressure release judging unit includes. The primary pressure value, the effective secondary pressure value and the effective tertiary pressure value are obtained through analysis of the active pressure relief judging unit, a temperature change value, a liquid level value and a flow value are calculated according to the primary pressure value, the effective secondary pressure value and the effective tertiary pressure value respectively, and the discharge condition of overflow slurry is judged according to the temperature change value, the liquid level value and the change of the flow value, so that whether an active pressure relief instruction is generated or not is judged, active pressure relief is carried out, and blowout accidents are prevented.
Description
Technical Field
The invention relates to the field of petroleum drilling equipment, in particular to a blowout-preventing multi-stage remote control type choke manifold device.
Background
When piping well kick occurs, a certain casing pressure is controlled by utilizing the difference of starting and closing degrees of the throttle valve, so that stable bottom hole pressure is maintained, and formation fluid is prevented from flowing into the well further. The well killing operation is implemented through the throttling action of the throttle valve, polluted slurry in the well is replaced, and the polluted slurry overflows into the throttle manifold to be discharged, so that blowout is prevented;
for example, patent application publication No. CN116335572a discloses a remotely controllable intelligent choke manifold, which realizes control of overflow slurry by opening and closing a choke valve in the remotely controllable choke manifold, so that pressure relief protection is needed when overflow slurry is discharged, although a safety valve is installed on the choke manifold at present, pressure relief can be performed when pressure in a pipe exceeds standard, but the pressure relief mode of the safety valve at present is triggered when the pressure relief critical point is reached, however, the overflow slurry has complex components, such as high gas content in the overflow slurry, and at the moment, the overflow slurry is discharged into an overflow slurry storage tank, the gas content in the tank exceeds standard, the gas in the overflow slurry is generally combustible gas, a great amount of gas is gathered, explosion is extremely easy to cause blowout accidents, the solid content in the overflow slurry is high, the pressure is not discharged timely, and the overflow slurry is not discharged timely to cause blockage, so that blowout accidents are caused.
Disclosure of Invention
Therefore, the invention aims to provide a multi-stage remote control type choke manifold device for preventing blowout, so as to realize active pressure discharge according to the real-time detection and analysis of the pressure in a pipe during overflow mud discharge, and prevent blowout accidents.
In order to achieve the technical purpose, the invention provides a blowout-preventing multi-stage remote control type choke manifold device which comprises a main body, a branch pipe and a branch pipe, wherein the branch pipe is connected with the main body through a branch pipe, and the branch pipe is connected with the branch pipe through a branch pipe:
the automatic pressure release device comprises a flat valve and an active pressure release judging unit, wherein a shunt box for shunt is assembled on the flat valve, a safety valve for active pressure release and passive pressure release of the shunt box is assembled on the shunt box, and the active pressure release judging unit comprises:
the first pressure acquisition component is used for acquiring the pressure value of the slurry passing through the first pressure acquisition component and is marked as a primary pressure value;
the second pressure acquisition component is used for acquiring the pressure value of the slurry passing through the second pressure acquisition component, marking the pressure value as a second-level pressure value and processing the second-level pressure value to obtain an effective second-level pressure value;
the third pressure acquisition component is used for acquiring the pressure value of the slurry passing through the third pressure acquisition component, marking the pressure value as a third-level pressure value and processing the third-level pressure value to obtain an effective third-level pressure value;
the flow rate detection module is used for obtaining the flow rate value of the slurry passing through the flow rate detection module;
the control module is used for respectively calculating a temperature change value, a liquid level value and a flow value according to the primary pressure value, the effective secondary pressure value and the effective tertiary pressure value, comparing the temperature change value, the liquid level value and the flow value with a preset temperature change threshold value, a preset liquid level threshold value and a preset flow threshold value respectively, judging whether an active pressure relief instruction is generated, and controlling the safety valve to actively relieve pressure if the active pressure relief instruction is generated.
Preferably, the split valves used for splitting are fixed on two sides of the flat valve, a first throttle valve used for adjusting throttling is arranged on the flat valve, one end of the first throttle valve is fixedly connected with the flat valve, the other end of the first throttle valve is connected with the split box through a first pressure acquisition component, a second throttle valve used for adjusting throttling is arranged on the split box, and the split box is connected with a third pressure acquisition component through the second throttle valve.
Preferably, the first pressure acquisition assembly comprises a first straight pipe and a first pressure acquisition module, two ends of the first straight pipe are respectively connected with the first throttle valve and the split flow box, the first pressure acquisition module is fixed on the first straight pipe, and the first pressure acquisition module is used for acquiring a primary pressure value of mud passing through the first straight pipe.
Preferably, the second pressure acquisition component comprises a second straight connecting pipe and a second pressure acquisition module, two ends of the second straight connecting pipe are respectively fixed with the diversion box and the safety valve, the second pressure acquisition modules are i, i second pressure acquisition modules are sequentially and vertically fixed on the second straight connecting pipe, the second pressure acquisition module acquires a second-level pressure value of slurry passing through the second straight connecting pipe, the second pressure acquisition module compares the second-level pressure value with a preset second-level pressure threshold, the second-level pressure value is larger than the preset second-level pressure threshold and is an effective second-level pressure value, and the sum of i effective second-level pressure values is a liquid level value and i is an integer larger than or equal to 1.
Preferably, the third pressure obtaining assembly comprises a third straight connecting pipe and a third pressure obtaining module, two ends of the third straight connecting pipe are respectively connected with the second throttling valve and the flow velocity detecting module, the number of the third pressure obtaining modules is n, the third pressure obtaining modules are annularly fixed on the third straight connecting pipe, the three-level pressure value obtained by the third pressure obtaining module is greater than or equal to a preset three-level pressure threshold value and is an effective three-level pressure value, and n is an integer greater than or equal to 1.
Preferably, the third pressure acquisition module comprises a fixed cylinder, a pressure guide rod, a pressure sensor and a cylinder cover, wherein the fixed cylinder is fixed on the third direct pipe, the pressure guide rod is sequentially connected with the fixed cylinder and the third direct pipe in a sliding sealing mode, the cylinder cover is fixed at the end part of the fixed cylinder, the pressure sensor is fixed on the cylinder cover, the pressure sensor is used for acquiring the pressure received by the pressure guide rod, the pressure guide rod is used for transmitting the pressure generated by mud through the third direct pipe, and the first pressure acquisition module and the second pressure acquisition module are identical in structure with the third pressure acquisition module.
Preferably, the safety valve comprises a valve body, a passive pressure relief assembly is arranged in the valve body, and a driving assembly for driving the passive pressure relief assembly to actively relieve pressure is arranged on the valve body.
Preferably, the valve body comprises a valve seat, a valve cover and a valve cup, wherein two ends of the valve seat are respectively and fixedly connected with the second pressure acquisition component and the valve cover, the valve cup is fixed between the valve seat and the second pressure acquisition component, and a pressure discharge pipe for discharging pressure is fixed on the valve seat;
the passive pressure relief assembly comprises a valve cover, a limiting plate, a valve rod and a spring, wherein the limiting plate is fixed between the valve seat and the valve cover, one end of the valve rod is in sliding sealing connection with the valve cover, the other end of the valve rod abuts against the limiting plate, the valve cover is fixed at the bottom end of the valve rod, the valve cover is used for plugging a valve cup, the spring is sleeved on the valve rod, and two ends of the spring abut against the valve cover and the valve rod respectively;
the driving assembly comprises a tilting rod, an oil cylinder and a fixed block, wherein the oil cylinder and the fixed block are fixed on the valve cover, the tilting rod is rotationally connected with the fixed block, and two ends of the tilting rod are respectively and slidably connected with the valve rod and the output end of the oil cylinder.
Preferably, the control module calculates a temperature change value according to the first-level pressure value, and the temperature change value calculation formula is:
Δt= (μ×f×d)/(c×a), where Δt is a temperature change value, μ is a friction coefficient of the slurry, F is a first-stage pressure value, d is a distance of the slurry from the plate valve to the first pressure acquisition assembly, C is a heat capacity of the slurry, a is a mass of the slurry passing through the first nipple, and the mass is determined by a pipe diameter and a flow rate value of the first nipple.
Preferably, the flow rate detection module includes a fourth straight pipe and a turbine flowmeter, the fourth straight pipe is connected with the third straight pipe, the turbine flowmeter is fixed on the fourth straight pipe, and the output end of the turbine flowmeter is located inside the fourth straight pipe, the control module calculates a flow rate value according to the three-stage pressure value and the flow rate value, and the calculation formula of the flow rate value is:
q= (pi× (R/2)) x/n, where Q is the flow value, pi=3.14, v is the flow value, R is the radius of the third straight pipe, x is the number of effective three-stage pressure values, and n is the total number of third pressure acquisition components.
Preferably, the active pressure relief instruction comprises a primary pressure relief instruction and a secondary pressure relief instruction; the method for judging whether the first-stage pressure relief instruction is generated or not comprises the following steps:
the flow value is larger than or equal to a preset flow threshold value, and the temperature change value is smaller than the preset temperature change threshold value, a first-level pressure relief instruction is generated, and the instruction is sent to an external remote control center to control a driving assembly to drive a passive pressure relief assembly to open active pressure relief;
if the flow value is smaller than the preset flow threshold value and the temperature change value is larger than or equal to the preset temperature change threshold value, a first-stage pressure release instruction is not generated;
the method for judging whether the secondary pressure release instruction is generated or not comprises the following steps:
the liquid level value is larger than or equal to a preset liquid level threshold value, and the temperature change value is larger than or equal to a preset temperature change threshold value, a secondary pressure relief instruction is generated, and the instruction is sent to an external remote control center to control a safety valve to open pressure relief;
if the liquid level value is smaller than the preset liquid level threshold value and the temperature change value is larger than or equal to the preset temperature change threshold value, a secondary pressure release instruction is not generated.
From the above technical scheme, the application has the following beneficial effects:
1. the primary pressure value, the effective secondary pressure value and the effective tertiary pressure value are obtained through analysis of the active pressure relief judging unit, a temperature change value, a liquid level value and a flow value are calculated according to the primary pressure value, the effective secondary pressure value and the effective tertiary pressure value respectively, and the discharge condition of overflow slurry is judged according to the temperature change value, the liquid level value and the change of the flow value, so that whether an active pressure relief instruction is generated or not is judged, active pressure relief is carried out, and blowout accidents are prevented.
2. Through installing drive assembly on the valve body, stick up the pole and link to each other with hydro-cylinder output and valve rod respectively in the drive assembly, the hydro-cylinder can stretch out to the valve body outside through stick up pole drive valve rod, lets passive pressure release subassembly open, carries out initiative pressure release, and excessive gas and solid matter can all be discharged from the valve body in the overflow mud, need not manual operation, and response speed is faster.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 2 is a schematic diagram of the overall structure of the safety valve in FIG. 1 of a blowout prevention multi-stage remote control type choke manifold device according to the present invention;
FIG. 3 is a schematic side view of the safety valve in FIG. 1 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 4 is a schematic diagram of a cross-sectional structure of A-A in FIG. 3 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 5 is a schematic view of the active open state of the safety valve in FIG. 4 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 6 is a schematic diagram of the passive open state of the safety valve in FIG. 4 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 7 is a schematic diagram of the overall structure of the first pressure acquisition assembly of FIG. 1 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 8 is a schematic diagram of the overall structure of the second pressure acquisition assembly of FIG. 1 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 9 is a schematic diagram illustrating the overall structure of the third pressure acquisition assembly of FIG. 1 of a blowout prevention multi-stage remote control choke manifold device according to the present invention;
FIG. 10 is a schematic front view of the third pressure acquisition assembly of FIG. 9 of a blowout prevention multi-stage remote control choke manifold assembly according to the present disclosure;
FIG. 11 is a schematic view of a cross-sectional structure of the multi-stage remote control choke manifold device of FIG. 10 at B-B for blowout prevention according to the present invention;
FIG. 12 is a schematic diagram of the overall structure of the flow rate detection module in FIG. 1 of a blowout prevention multi-stage remote control type choke manifold device according to the present invention;
fig. 13 is a working flow chart of an active pressure release judging unit of the multi-stage remote control type choke manifold device for preventing blowout.
Description of the drawings: 1. a flat valve; 2. a diverter valve; 3. a first throttle valve; 4. a shunt box; 5. a safety valve; 51. a valve seat; 511. a pressure discharge pipe; 52. a valve cover; 53. a valve cup; 54. a valve housing; 55. a limiting plate; 56. a valve stem; 57. a spring; 58. a tilting rod; 59. an oil cylinder; 510. a fixed block; 6. an active pressure release judging unit; 61. a first pressure acquisition assembly; 611. a first straight pipe; 612. a first pressure acquisition module; 62. a second pressure acquisition assembly; 621. a second straight pipe; 622. a second pressure acquisition module; 63. a third pressure acquisition assembly; 631. a third straight pipe; 632. a third pressure acquisition module; 6321. a fixed cylinder; 6322. a pressure guiding rod; 6323. a pressure sensor; 6324. a cylinder cover; 64. a flow rate detection module; 641. a fourth straight pipe; 642. a turbine flowmeter; 65. a control module; 7. and a second throttle valve.
Detailed Description
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures may be shown in exaggerated form in particular figures to illustrate related details or structures of embodiments of the present disclosure.
Referring to fig. 1-13:
the utility model provides a prevent multistage remote control formula choke manifold device of blowout, includes flat valve 1 and initiative pressure release judging element 6, is equipped with the reposition of redundant personnel case 4 that is used for the reposition of redundant personnel on the flat valve 1, and a plurality of shunt ports have been seted up on the surface of reposition of redundant personnel case 4, and each shunt port department all installs flange for connecting external part, realizes turning to reposition of redundant personnel or unidirectional current and divide into multidirectional stream, and the empty shunt port of unconnected passes through the shutoff of end cap, as shown in fig. 1, is equipped with on reposition of redundant personnel case 4 to the relief valve 5 of reposition of redundant personnel case 4 initiative pressure release and passive pressure release;
specifically, as shown in fig. 1, 2, 3, 4, 5 and 6, the safety valve 5 includes a valve body, a passive pressure relief component is assembled in the valve body, the pressure exceeding the compression-resistant critical value of the passive pressure relief component can automatically open the discharge pressure, a driving component for driving the passive pressure relief component to actively relieve pressure is assembled on the valve body, and when it is determined that overflow slurry in the throttle manifold is abnormal, the passive pressure relief component can be actively opened by the driving component to actively relieve pressure;
more specifically, as shown in fig. 1, 2, 3, 4, 5 and 6, the valve body includes a valve seat 51, a valve cover 52 and a valve cup 53, two ends of the valve seat 51 are fixedly connected with a second pressure acquisition component 62 and the valve cover 52 respectively, the valve seat 51 is connected with the valve cover 52 through a flange, the valve cup 53 is fixed between the valve seat 51 and the second pressure acquisition component 62, the vertical section of the valve cup 53 is cup-shaped, during discharging, overflow slurry or gas enters the valve seat 51 through the valve cup 53, a discharging pressure pipe 511 for discharging pressure is fixed on the valve seat 51, a flange plate for connecting external components is fixed at the end part of the discharging pressure pipe 511, the discharging pressure pipe 511 is connected with an external standby collecting tank according to the use situation, and the overflow slurry or gas with overpressure can be discharged into the standby collecting tank through the discharging pressure pipe 511;
the passive pressure relief assembly comprises a valve cover 54, a limiting plate 55, a valve rod 56 and a spring 57, wherein the limiting plate 55 is fixed between a valve seat 51 and a valve cover 52, one end of the valve rod 56 is in sliding sealing connection with the valve cover 52, the other end of the valve rod 56 is propped against the limiting plate 55, the valve cover 54 is fixed at the bottom end of the valve rod 56, the valve cover 54 is used for sealing a valve cup 53, the spring 57 is sleeved on the valve rod 56, two ends of the spring 57 respectively prop against the valve cover 52 and the valve rod 56, the spring 57 provides elasticity for the valve cover 54, so that the valve cover 54 can tightly prop against the valve cup 53, the compression threshold of the passive pressure relief assembly is the maximum elasticity value of the spring 57, once the pressure applied to the valve cover 54 is larger than the maximum elasticity value of the spring 57, the valve cover 54 can prop against the valve cup 53, overflow slurry or gas can enter the valve seat 51 and is discharged through a pressure discharge pipe 511, and the state is shown in fig. 6;
the driving assembly comprises a tilting rod 58, an oil cylinder 59 and a fixed block 510, wherein the oil cylinder 59 and the fixed block 510 are fixed on the valve cover 52, the tilting rod 58 is rotationally connected with the fixed block 510, two ends of the tilting rod 58 are respectively and slidably connected with the valve rod 56 and the output end of the oil cylinder 59, two ends of the tilting rod 58 are provided with U-shaped notches, the output end of the oil cylinder 59 is slidably connected with the U-shaped notches, the top of the output end of the oil cylinder 59 is limited to the tilting rod 58, the oil cylinder 59 can pull the tilting rod 58 to approach the oil cylinder 59, the valve rod 56 is slidably connected with the U-shaped notches, and the end part of the oil cylinder 59 can limit the tilting rod 58, so that when one end of the output end of the oil cylinder 59 pulls the tilting rod 58 to approach the oil cylinder 59, the other end of the tilting rod 58 can push the valve rod 56 to be away from a valve body, the valve cover 54 leaves the valve cup 53, the same can play the valve opening effect, the oil cylinder 59 is connected with an external oil pump, and an electromagnetic valve is arranged on a pipeline connected with the oil pump, and remote control of the oil cylinder 59 is realized by controlling the opening and closing of the electromagnetic valve.
When the slurry in the well overflows, the blowout preventer is opened, the overflow slurry flows to the diversion box 4 through the flat valve 1, a second throttle valve 7 for adjusting throttle is arranged on the diversion box 4, the second throttle valve 7 is connected with an external overflow slurry storage tank through a pipeline, the overflow slurry can be controlled to pass through by adjusting the second throttle valve 7, a first throttle valve 3 for adjusting throttle is arranged on the flat valve 1, the overflow slurry can be controlled to pass through by adjusting the first throttle valve 3, one end of the first throttle valve 3 is fixedly connected with the flat valve 1, the other end of the first throttle valve is connected with the diversion box 4, and the overflow slurry sequentially passes through the first throttle valve 3, the diversion box 4 and the second throttle valve 7 after entering from the flat valve 1, so that the overflow slurry is a first passage for throttling manifold;
the two sides of the plate valve 1 are both fixed with the diverter valve 2 for diverting, when overflow slurry passing through the plate valve 1 is excessive, diversion can be realized by opening the diverter valve 2, and the pressure of the first passage is relieved;
the flat valve 1, the diverter valve 2, the first throttle valve 3 and the second throttle valve 7 are all valves driven by a motor, and can be remotely controlled by remotely controlling the motor to work, which is a known and disclosed technology and will not be described herein.
The active pressure release determination unit 6 includes:
as shown in fig. 1 and 7, the first pressure obtaining assembly 61 includes a first straight pipe 611 and a first pressure obtaining module 612, two ends of the first straight pipe 611 are respectively connected with the first throttle valve 3 and the split tank 4, two ends of the first straight pipe 611 are fixedly connected with the first throttle valve 3 and the split tank 4 through flanges, the first pressure obtaining module 612 is fixedly arranged on the first straight pipe 611, and the first pressure obtaining module 612 is used for obtaining a primary pressure value of slurry passing through the first straight pipe 611;
as shown in fig. 1 and 8, the second pressure obtaining assembly 62 includes a second straight pipe 621 and a second pressure obtaining module 622, two ends of the second straight pipe 621 are fixedly connected with the diversion box 4 and the valve seat 51 through flanges, the second pressure obtaining module 622 is used for obtaining a pressure value of slurry passing through the second straight pipe 621, i second pressure obtaining modules 622 are vertically fixed on the second straight pipe 621 in sequence, the second pressure obtaining module 622 compares the second pressure value with a preset second pressure threshold, the second pressure value is greater than the preset second pressure threshold and is an effective second pressure value, namely, overflow slurry is applied to the second pressure obtaining module 622 at this time, the sum of i effective second pressure values is a liquid level value, the preset second pressure threshold is an integer greater than 0, the preset second pressure obtaining module 622 is in a null condition under normal air pressure, and the pressure threshold obtained under the influence of air pressure is only the preset second pressure threshold;
as shown in fig. 1, 9 and 11, the third pressure obtaining assembly 63 includes a third straight pipe 631 and a third pressure obtaining module 632, both ends of the third straight pipe 631 are respectively connected and fixed with the second throttle valve 7 and the fourth straight pipe 641 through flanges, and the third pressure obtaining module 632 is used for obtaining a three-stage pressure value of the slurry passing through the third straight pipe 631;
specifically, as shown in fig. 10 and 11, the third pressure acquisition module 632 includes a fixed cylinder 6321, a pressure guiding rod 6322, a pressure sensor 6323 and a cylinder cover 6324, where the fixed cylinder 6321 is fixed on the third straight connecting pipe 631, the pressure guiding rod 6322 is sequentially connected with the fixed cylinder 6321 and the third straight connecting pipe 631 in a sliding and sealing manner, the cylinder cover 6324 is fixed at the end of the fixed cylinder 6321, the pressure sensor 6323 is fixed on the cylinder cover 6324, the pressure sensor 6323 is used to acquire the pressure received by the pressure guiding rod 6322, and the pressure guiding rod 6322 is used to transmit the pressure generated by the slurry through the third straight connecting pipe 631, so that the pressure sensor 6323 is prevented from being damaged due to direct contact of the slurry, and the pressure is applied to the pressure sensor 6323 to measure the pressure;
the pressure sensor 6323 is a sensor device for measuring pressure, which converts a pressure signal into a measurable electrical signal for monitoring, controlling and data processing, and the basic principle of the pressure sensor is to use the pressure sensed by a force-receiving element (such as a diaphragm, a spring, etc.) to cause deformation or generate strain, and then convert the pressure signal into an electrical signal, where a variable resistance type can be adopted in this embodiment;
the first pressure acquisition module 612 has the same structure as the second pressure acquisition module 622 and the third pressure acquisition module 632, and the pressure detection manner is the same;
as shown in fig. 1 and 12, a flow rate detection module 64, the flow rate detection module 64 is used for obtaining a flow rate value passing through the flow rate detection module 64, the flow rate detection module 64 comprises a fourth straight pipe 641 and a turbine flowmeter 642, the fourth straight pipe 641 is fixedly connected with the third straight pipe 631 through a flange, the turbine flowmeter 642 is fixedly arranged on the fourth straight pipe 641, an output end of the turbine flowmeter 642 is arranged inside the fourth straight pipe 641, and an output end of the turbine flowmeter 642 is arranged at the bottom of the third straight pipe 631, so that even if the overflow slurry throughput is low, the flow rate measurement of the turbine flowmeter 642 is not affected, and the turbine flowmeter 642 is a commonly used flow rate measurement device which measures the flow rate of fluid by using the principle of turbine rotation;
the control module 65, the control module 65 is fixed on the shunt box 4, the first pressure acquisition module 612, the second pressure acquisition module 622, the third pressure acquisition module 632 and the turbine flowmeter 642 are electrically connected with the control module 65 through wires and used for electrifying and transmitting data, the control module 65 calculates a temperature change value, a liquid level value and a flow value according to the primary pressure value, the effective secondary pressure value and the effective tertiary pressure value respectively, the control module 65 compares the temperature change value, the liquid level value and the flow value with a preset temperature change threshold value, a preset liquid level threshold value and a preset flow threshold value respectively, judges whether an active pressure relief instruction is generated, if the active pressure relief instruction is generated, the safety valve 5 is controlled to actively relieve pressure, namely, the output end of the oil cylinder 59 pulls one end of the warping rod 58 to the oil cylinder 59, the other end of the warping rod 58 pushes the valve rod 56 away from the valve body, the valve cover 54 is separated from the valve cup 53, and active pressure relief is carried out;
the preset temperature change threshold, the preset liquid level threshold and the preset flow threshold are values larger than 0, and in the embodiment, the preset temperature change threshold is a temperature change threshold caused by normal overflow slurry obtained by a person skilled in the art in an experimental environment passing through a pipeline; the preset flow threshold is a flow threshold generated by normal overflow slurry obtained by a person skilled in the art in an experimental environment through a pipeline; the preset liquid level threshold is the highest liquid level value, that is, the effective pressure values obtained by all the second pressure obtaining modules 622.
Further, as shown in fig. 9 and 10, the third pressure acquisition modules 632 are n, the n third pressure acquisition modules 632 are annularly fixed on the third direct connection pipe 631, the three-level pressure value acquired by the third pressure acquisition modules 632 is greater than or equal to the preset three-level pressure threshold value, which is an effective three-level pressure value, and the preset three-level pressure threshold value is an integer greater than 0, in this embodiment, the preset three-level pressure threshold value is an experimental environment, the third pressure acquisition modules 632 are empty under normal air pressure, the pressure threshold value obtained only under the influence of air pressure is the preset three-level pressure threshold value, and the pressure threshold value obtained only under the influence of air pressure is determined by those skilled in the art according to a large number of experiments, so that it can be determined that the overflow slurry level through the third direct connection pipe 631 is measured with more accurate flow.
The control module 65 calculates a flow value according to the three-stage pressure value and the flow value, and the flow value has a calculation formula as follows:
q= (pi× (R/2) v x/n, where Q is the flow value, pi=3.14, v is the flow value, R is the radius of the third straight pipe (631), x is the number of effective three-stage pressure values, n is the total number of third pressure acquisition components (63), and by adding x's determination, the actual flow value when the non-full pipe passes can be accurately acquired.
The control module 65 calculates a temperature change value according to the first-level pressure value, and the temperature change value has a calculation formula:
Δt= (μ×f×d)/(c×a), where Δt is a temperature change value, μ is a friction coefficient of the slurry, the slurry friction coefficient is determined by those skilled in the art based on a large number of experiments, F is an effective primary pressure value, F is a force exerted by the slurry on the object, i.e., a primary pressure value, d is a distance of friction movement, i.e., a distance of the plate valve 1 to the first pressure acquisition assembly 61, C is a heat capacity of the slurry, a heat capacity of the slurry is determined by those skilled in the art based on a large number of experiments, a is a mass of the object, the mass is determined by a pipe diameter and a flow rate value of the first straight pipe 611, the friction force received by an inner wall of the split tank 4 increases as the F value passing through the first pressure acquisition assembly 61 increases, and the concentration of the slurry increases as the temperature change value of the inner wall of the split tank 4 increases, thereby determining passing through the slurry concentration based on the temperature change value.
The active pressure release instruction comprises: the method for judging whether the first-stage pressure relief instruction is generated or not comprises the following steps:
the flow value is larger than or equal to a preset flow threshold value, the temperature change value is smaller than the preset temperature change threshold value, the flow is large, but the temperature change is not obvious, the gas content in slurry is high, the solid content is low, if the gas is not timely discharged, the risk of blowout is caused by excessive air pressure, a first-stage pressure relief instruction is generated, and the instruction is sent to an external remote control center to control a driving assembly to drive a passive pressure relief assembly to open active pressure relief;
if the flow value is smaller than the preset flow threshold, the temperature change value is larger than or equal to the preset temperature change threshold, which indicates that the flow is normal, the temperature change is normal, the solid content and the gas content in the slurry are balanced, and a first-stage pressure release instruction is not generated;
the method for judging whether the secondary pressure release instruction is generated or not comprises the following steps:
the liquid level value is greater than or equal to a preset liquid level threshold value, the temperature change value is greater than or equal to a preset temperature change threshold value, which indicates that the content of solids in slurry is high, the basic throughput cannot be met in the distribution box 4, the basic throughput is the slurry amount which can pass through the distribution box 4 in unit time and cannot generate blockage, excessive slurry flows to a branch, namely, the second direct pipe 621 is in blockage, the risk of blowout caused by the overflow of the slurry exists, a secondary pressure relief instruction is generated, and the instruction is sent to an external remote control center to control the safety valve 5 to open the pressure relief;
if the liquid level value is smaller than the preset liquid level threshold value and the temperature change value is larger than or equal to the preset temperature change threshold value, the flow is normal, the temperature change is normal, the solid content and the gas content in the slurry are balanced, and a secondary pressure release instruction is not generated.
The exemplary implementation of the solution proposed by the present disclosure has been described in detail hereinabove with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above and that various combinations of the technical features, structures proposed by the present disclosure can be made without departing from the scope of the present disclosure, which is defined by the appended claims.
Claims (11)
1. The utility model provides a prevent multistage remote control formula choke manifold device of blowout, its characterized in that, includes flat valve (1) and initiative pressure release judging unit (6), be equipped with on flat valve (1) and be used for reposition of redundant personnel case (4), be equipped with on reposition of redundant personnel case (4) to reposition of redundant personnel case (4) initiative pressure release and passive relief valve (5), initiative pressure release judging unit (6) include:
a first pressure acquisition assembly (61) for acquiring a pressure value of the slurry passing through the first pressure acquisition assembly (61), labeled as a primary pressure value;
the second pressure acquisition component (62) is used for acquiring the pressure value of the slurry passing through the second pressure acquisition component (62), marking the pressure value as a second-level pressure value and processing the second-level pressure value to obtain an effective second-level pressure value;
the third pressure acquisition assembly (63) is used for acquiring the pressure value of the slurry passing through the third pressure acquisition assembly (63), marking the pressure value as a third-stage pressure value, and processing the third-stage pressure value to obtain an effective third-stage pressure value;
a flow rate detection module (64) for acquiring a flow rate value of the slurry passing through the flow rate detection module (64);
the control module (65) is used for respectively calculating a temperature change value, a liquid level value and a flow value according to the primary pressure value, the effective secondary pressure value and the effective tertiary pressure value, the control module (65) is used for respectively comparing the temperature change value, the liquid level value and the flow value with a preset temperature change threshold value, a preset liquid level threshold value and a preset flow threshold value to judge whether an active pressure relief instruction is generated, and if the active pressure relief instruction is generated, the safety valve (5) is controlled to actively relieve pressure.
2. The blowout-preventing multi-stage remote control type choke manifold device according to claim 1, wherein the two sides of the flat valve (1) are both fixedly provided with a diversion valve (2) for diversion, the flat valve (1) is provided with a first choke valve (3) for adjusting throttling, one end of the first choke valve (3) is fixedly connected with the flat valve (1), the other end of the first choke valve (3) is connected with a diversion box (4) through a first pressure acquisition component (61), the diversion box (4) is provided with a second choke valve (7) for adjusting throttling, and the diversion box (4) is connected with a third pressure acquisition component (63) through the second choke valve (7).
3. The blowout prevention multi-stage remote control type choke manifold device according to claim 2, wherein the first pressure acquisition assembly (61) comprises a first straight pipe (611) and a first pressure acquisition module (612), two ends of the first straight pipe (611) are respectively connected with the first choke valve (3) and the diversion tank (4), the first pressure acquisition module (612) is fixed on the first straight pipe (611), and the first pressure acquisition module (612) is used for acquiring a primary pressure value of mud passing through the first straight pipe (611).
4. A blowout prevention multi-stage remote control type choke manifold device according to claim 3, wherein the second pressure obtaining assembly (62) comprises a second straight pipe (621) and a second pressure obtaining module (622), two ends of the second straight pipe (621) are respectively fixed with the diversion box (4) and the safety valve (5), the second pressure obtaining modules (622) are i, i second pressure obtaining modules (622) are vertically fixed on the second straight pipe (621) in sequence, the second pressure obtaining module (622) obtains a second pressure value of mud passing through the second straight pipe (621), the second pressure obtaining module (622) compares the second pressure value with a preset second pressure threshold, the second pressure value is larger than the preset second pressure threshold, i effective second pressure values are the liquid level values, and i is an integer larger than or equal to 1.
5. The blowout prevention multi-stage remote control type choke manifold device according to claim 4, wherein the third pressure obtaining assembly (63) comprises a third straight pipe (631) and a third pressure obtaining module (632), two ends of the third straight pipe (631) are respectively connected with the second choke valve (7) and the flow rate detecting module (64), the number of the third pressure obtaining modules (632) is n, the number of the n third pressure obtaining modules (632) is n, the number of the third pressure obtaining modules (632) is fixed on the third straight pipe (631) in a ring shape, the three-stage pressure value obtained by the third pressure obtaining module (632) is greater than or equal to a preset three-stage pressure threshold value and is an effective three-stage pressure value, and n is an integer greater than or equal to 1.
6. The blowout prevention multi-stage remote control type choke manifold device according to claim 5, wherein the third pressure acquisition module (632) comprises a fixed cylinder (6321), a pressure guiding rod (6322), a pressure sensor (6323) and a cylinder cover (6324), the fixed cylinder (6321) is fixed on the third straight connecting pipe (631), the pressure guiding rod (6322) is in sliding sealing connection with the fixed cylinder (6321) and the third straight connecting pipe (631) in sequence, the cylinder cover (6324) is fixed at the end of the fixed cylinder (6321), the pressure sensor (6323) is fixed on the cylinder cover (6324), the pressure sensor (6323) is used for acquiring the pressure to which the pressure guiding rod (6322) is subjected, the pressure guiding rod (6322) is used for transmitting the pressure generated by the slurry through the third straight connecting pipe (631), and the first pressure acquisition module (612) is identical to the structures of the second pressure acquisition module (622) and the third pressure acquisition module (632).
7. The blowout prevention multi-stage remote control type choke manifold device according to claim 1, wherein the safety valve (5) comprises a valve body, a passive pressure relief assembly is arranged in the valve body, and a driving assembly for driving the passive pressure relief assembly to actively relieve pressure is arranged on the valve body.
8. The blowout prevention multi-stage remote control type choke manifold device according to claim 7, wherein the valve body comprises a valve seat (51), a valve cover (52) and a valve cup (53), both ends of the valve seat (51) are fixedly connected with a second pressure acquisition component (62) and the valve cover (52) respectively, the valve cup (53) is fixed between the valve seat (51) and the second pressure acquisition component (62), and a pressure discharge pipe (511) for discharging pressure is fixed on the valve seat (51);
the passive pressure relief assembly comprises a valve cover (54), a limiting plate (55), a valve rod (56) and a spring (57), wherein the limiting plate (55) is fixed between a valve seat (51) and a valve cover (52), one end of the valve rod (56) is in sliding sealing connection with the valve cover (52), the other end of the valve rod (56) abuts against the limiting plate (55), the valve cover (54) is fixed at the bottom end of the valve rod (56), the valve cover (54) is used for blocking a valve cup (53), the spring (57) is sleeved on the valve rod (56), and two ends of the spring (57) abut against the valve cover (52) and the valve rod (56) respectively;
the driving assembly comprises a tilting rod (58), an oil cylinder (59) and a fixed block (510), wherein the oil cylinder (59) and the fixed block (510) are fixed on the valve cover (52), the tilting rod (58) is rotationally connected with the fixed block (510), and two ends of the tilting rod (58) are respectively in sliding connection with the valve rod (56) and the output end of the oil cylinder (59).
9. A blowout prevention multi-stage remote control type choke manifold device according to claim 3, wherein the control module (65) calculates a temperature variation value according to a primary pressure value, and the temperature variation value calculation formula is:
Δt= (μ×f×d)/(c×a), where Δt is a temperature change value, μ is a friction coefficient of the slurry, F is a first-order pressure value, d is a distance of the slurry from the flat valve (1) to the first pressure acquisition assembly (61), C is a heat capacity of the slurry, a is a mass of the slurry passing through the first straight pipe (611), and the mass is determined by a pipe diameter of the first straight pipe (611) and a flow rate value.
10. The blowout prevention multi-stage remote control type choke manifold device according to claim 5, wherein the flow rate detection module (64) comprises a fourth straight pipe (641) and a turbine flowmeter (642), the fourth straight pipe (641) is connected with the third straight pipe (631), the turbine flowmeter (642) is fixed on the fourth straight pipe (641), and an output end of the turbine flowmeter (642) is located inside the fourth straight pipe (641), and the control module (65) calculates a flow rate value according to a three-stage pressure value and a flow rate value, wherein a calculation formula of the flow rate value is as follows:
q= (pi× (R/2) v) x/n, where Q is the flow value, pi=3.14, v is the flow value, R is the radius of the third straight tube (631), x is the number of effective three-stage pressure values, and n is the total number of third pressure acquisition components (63).
11. The blowout prevention multi-stage remote control choke manifold device of claim 7, wherein the active pressure relief instructions include a primary pressure relief instruction and a secondary pressure relief instruction; the method for judging whether the first-stage pressure relief instruction is generated or not comprises the following steps:
the flow value is larger than or equal to a preset flow threshold value, and the temperature change value is smaller than the preset temperature change threshold value, a first-level pressure relief instruction is generated, and the instruction is sent to an external remote control center to control a driving assembly to drive a passive pressure relief assembly to open active pressure relief;
if the flow value is smaller than the preset flow threshold value and the temperature change value is larger than or equal to the preset temperature change threshold value, a first-stage pressure release instruction is not generated;
the method for judging whether the secondary pressure release instruction is generated or not comprises the following steps:
the liquid level value is larger than or equal to a preset liquid level threshold value, and the temperature change value is larger than or equal to a preset temperature change threshold value, a secondary pressure relief instruction is generated, and the instruction is sent to an external remote control center to control a safety valve (5) to open pressure relief;
if the liquid level value is smaller than the preset liquid level threshold value and the temperature change value is larger than or equal to the preset temperature change threshold value, a secondary pressure release instruction is not generated.
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| CN118346187A (en) * | 2024-05-07 | 2024-07-16 | 重庆新泰机械有限责任公司 | 175MPa superhigh pressure throttle kill manifold |
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