CN112127836B - Drilling device and method for preventing overflow and blowout - Google Patents
Drilling device and method for preventing overflow and blowout Download PDFInfo
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- 238000005553 drilling Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000002265 prevention Effects 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims description 36
- 238000012545 processing Methods 0.000 claims description 36
- 230000000694 effects Effects 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 description 11
- 238000007789 sealing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
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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
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/087—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods by means of a swinging arm
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or 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
- E21B7/00—Special methods or apparatus for drilling
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a drilling device and a drilling method for preventing overflow and blowout, and relates to the technical field of petroleum exploitation equipment. The utility model provides an anti-overflow and blowout's drilling equipment drilling machine bottom plate, still include the fixed stay pole, the fixed stay pole sets up in the upside of drilling machine bottom plate, the upside transverse hinge of fixed stay pole has the pendulum, one of them one end of pendulum is connected with drilling host computer, the other end of pendulum is connected with drives its wobbling power pack, the downside of drilling host computer is equipped with rather than complex drilling rod, the downside of drilling rod runs through the downside of fixed stay pole, the downside of drilling rod is equipped with the drill bit, drilling machine bottom plate upside is equipped with anti-overflow cover, anti-overflow cover is established on the drilling rod, be connected with the overflow pipe with its inner chamber intercommunication on the anti-overflow cover, be equipped with the valve on the overflow pipe. The invention discloses a method for realizing an anti-overflow and blowout drilling device, which comprises the steps of drilling, primary anti-overflow, secondary anti-overflow and blowout prevention.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation equipment, in particular to a drilling device and a drilling method for preventing overflow and blowout.
Background
Petroleum extraction refers to the act of excavating and extracting petroleum where it is stored. In the process of petroleum exploitation, oil gas flows into the bottom of a well from a reservoir, and rises to a driving mode of a wellhead from the bottom of the well.
The petroleum exploitation technology comprises four processes of logging engineering, drilling engineering, oil extraction engineering and oil and gas gathering and transportation engineering, the drilling engineering has very important roles in oil and gas development and in oil and gas field development, and the drilling engineering always accounts for more than 50% of the total investment in constructing an oil and gas field. The development of an oil and gas field often involves several hundred or even thousands or more wells. There are different technical requirements for wells used for different purposes of exploitation, observation and control, such as production wells, injection wells, observation wells, and inspection wells dedicated to inspecting the effect of water-wash oil. The drilled well should be ensured to have minimal pollution to the hydrocarbon reservoir, high cementing quality, and be capable of withstanding the effects of various downhole operations during several decades of exploitation. Improving drilling technology and management, increasing drilling speed, is the key to reducing drilling cost.
The drilling engineering is generally completed by selecting a drilling device, the drilling machine is a drilling device commonly used in geological exploration, the drilling machine drives a drilling tool to drill underground to obtain physical geological data, the drilling machine is also called a drilling machine, the petroleum drilling machine is colloquially called an extension of an electric hand drill, and a hole with a certain depth and a diameter is drilled from the ground to the underground through continuous rotation and deepening of an extension drilling rod.
The currently shown drilling equipment does not have the function of preventing flooding and blowout.
In summary, we propose a drilling device and a method for preventing overflow and blowout to solve the above problems.
Disclosure of Invention
The invention aims to provide a drilling device and a drilling method for preventing overflow and blowout, and the drilling device has the functions of preventing overflow and blowout.
Embodiments of the present invention are implemented as follows:
in a first aspect, the invention provides a drilling device for preventing overflow and blowout, which comprises a drilling machine bottom plate placed horizontally, and further comprises a fixed supporting rod, wherein the fixed supporting rod is arranged on the upper side of the drilling machine bottom plate, a pendulum is transversely hinged on the upper side of the fixed supporting rod, one end of the pendulum is connected with a drilling host, the other end of the pendulum is connected with a power assembly for driving the pendulum to swing, a drill rod matched with the drilling host is arranged on the lower side of the drilling host, the lower side of the drill rod penetrates through the lower side of the fixed supporting rod, a drill bit is arranged on the lower side of the drill rod, an overflow preventing cover is arranged on the upper side of the drilling machine bottom plate, the overflow preventing cover is sleeved on the drill rod, an overflow pipe communicated with an inner cavity of the overflow pipe is connected to the overflow preventing cover, and a valve is arranged on the overflow pipe.
In some embodiments of the present invention, the drilling machine base plate is used for being connected with the ground, and the fixed support rod is a tripod.
In some embodiments of the present invention, the drilling main machine and the power assembly are disposed at two sides of the fixed support rod, the power assembly includes a driving motor, the driving motor is in transmission connection with a first flywheel, the first flywheel is in transmission connection with an eccentric flywheel set, the eccentric flywheel set is connected with an eccentric rotation swinging rod, and an end of the swinging rod away from the eccentric flywheel set is connected with the pendulum bob.
In some embodiments of the present invention, the anti-overflow cover has a cylindrical shape, the anti-overflow cover has no lower sidewall forming an opening, the drill pipe penetrates through the upper side of the anti-overflow cover, the anti-overflow cover is composed of a first anti-overflow shell and a second anti-overflow shell, the first anti-overflow shell and the second anti-overflow shell have the same shape, one side of the opposite surfaces of the first anti-overflow shell and the second anti-overflow shell is hinged, and the other side of the opposite surfaces of the first anti-overflow shell and the second anti-overflow shell is detachably connected.
In some embodiments of the present invention, the lower side of the anti-overflow cover is detachably connected to the drill floor, and the lower sides of the first anti-overflow housing and the second anti-overflow housing are respectively provided with a connection block, wherein the connection blocks are arranged along the circumferential direction of the first anti-overflow housing, and the connection blocks are connected to the drill floor through bolts.
In some embodiments of the present invention, the valve is an electrically operated valve, and a control unit for controlling the valve to be opened and closed is connected to the valve.
In some embodiments of the invention, the system comprises a first pressure sensor arranged in the overflow preventing cover, and a central processing module arranged on the bottom plate belt of the drilling machine, wherein the central processing module is connected with the first pressure sensor, and the valve is connected with the central processing module.
In some embodiments of the present invention, the drill pipe is sleeved with an expansion assembly, the expansion assembly includes limiting plates disposed opposite to each other along an axial direction of the drill pipe, the limiting plates are sleeved on the drill pipe, an air bag cover is disposed between the two limiting plates, the air bag cover and the two limiting plates form a closed wall, and an expansion air bag is disposed inside the air bag cover.
In some embodiments of the present invention, a second pressure sensor is disposed on an outer side of the limiting plate, and the second pressure sensor is connected to the central processing module.
In a second aspect, the present invention provides a method for implementing an anti-overflow and blowout drilling device, including the above drilling device, comprising the steps of:
drilling: the power supply of the power component is connected, the power component drives the pendulum bob to swing, and the drilling host machine is driven to swing in the swinging process of the pendulum bob, so that the drilling host machine, the drill rod and the drill bit are matched, and the drill bit is used for punching the ground;
first-stage anti-overflow: when the drill bit drills, the internal fluid pressure outwards gushes out when the pressure is overlarge, when the fluid passes through a second pressure sensor on the limiting plate, the pressure of the second pressure sensor reaches a certain value, the second pressure sensor transmits a signal to the central processing module, the central processing module inflates the inflation air bag, and the inflation air bag inflates the air bag cover, so that the purpose of primary plugging in the well is achieved;
two-stage anti-overflow: because the inner area of the wellhead is uneven, the plugging effect of the expansion air bag on the wellhead is poor, fluid leaks, the fluid flows into the anti-overflow cover, and the anti-overflow cover has the secondary anti-overflow effect;
blowout prevention: when the pressure of the first pressure sensor in the anti-overflow cover is too high, the central processing module enables the valve to be opened, and fluid in the anti-overflow cover can be discharged through the overflow pipe.
The embodiment of the invention has at least the following advantages or beneficial effects:
in a first aspect, the invention provides a drilling device for preventing overflow and blowout, which comprises a drilling machine bottom plate placed horizontally, and further comprises a fixed supporting rod, wherein the fixed supporting rod is arranged on the upper side of the drilling machine bottom plate, a pendulum is transversely hinged on the upper side of the fixed supporting rod, one end of the pendulum is connected with a drilling host, the other end of the pendulum is connected with a power assembly for driving the pendulum to swing, a drill rod matched with the drilling host is arranged on the lower side of the drilling host, the lower side of the drill rod penetrates through the lower side of the fixed supporting rod, a drill bit is arranged on the lower side of the drill rod, an overflow preventing cover is arranged on the upper side of the drilling machine bottom plate, the overflow preventing cover is sleeved on the drill rod, an overflow pipe communicated with an inner cavity of the overflow pipe is connected to the overflow preventing cover, and a valve is arranged on the overflow pipe.
For the first aspect: in the petroleum drilling process, a power supply of a power assembly is connected, the power assembly drives a pendulum to move, the pendulum drives a drilling host to move, the drilling host, a drill rod and a drill bit are matched, drilling is achieved, when the pressure of fluid in a wellhead is increased, the fluid in the wellhead outwards gushes out, the fluid enters an anti-overflow cover, the anti-overflow cover has a sealing effect, leakage of the fluid is avoided, when the pressure in the anti-overflow cover is increased to a certain degree, a valve is opened, a fluid well overflow pipe in the anti-overflow cover is discharged, and overflow and blowout in the drilling process can be effectively placed. The design of the invention has the functions of overflow prevention and blowout prevention.
In a second aspect, the present invention provides a method for implementing an anti-overflow and blowout drilling device, including the above drilling device, comprising the steps of:
drilling: the power supply of the power component is connected, the power component drives the pendulum bob to swing, and the drilling host machine is driven to swing in the swinging process of the pendulum bob, so that the drilling host machine, the drill rod and the drill bit are matched, and the drill bit is used for punching the ground;
first-stage anti-overflow: when the drill bit drills, the internal fluid pressure outwards gushes out when the pressure is overlarge, when the fluid passes through a second pressure sensor on the limiting plate, the pressure of the second pressure sensor reaches a certain value, the second pressure sensor transmits a signal to the central processing module, the central processing module inflates the inflation air bag, and the inflation air bag inflates the air bag cover, so that the purpose of primary plugging in the well is achieved;
two-stage anti-overflow: because the inner area of the wellhead is uneven, the plugging effect of the expansion air bag on the wellhead is poor, fluid leaks, the fluid flows into the anti-overflow cover, and the anti-overflow cover has the secondary anti-overflow effect;
blowout prevention: when the pressure of the first pressure sensor in the anti-overflow cover is too high, the central processing module enables the valve to be opened, and fluid in the anti-overflow cover can be discharged through the overflow pipe.
For the second aspect: in the process of overflow of fluid in a wellhead, the primary overflow prevention and the secondary overflow prevention are matched, so that the overflow prevention effect is better, when the pressure of the first pressure sensor in the overflow prevention cover is overlarge, the central processing module enables the valve to be opened, and the fluid in the overflow prevention cover can be discharged through the overflow pipe, so that the overflow prevention device has the function of automatic pressure relief. The invention also comprises an alarm module which is connected with the central processing module, and the alarm module alarms when the pressure of the second pressure sensor reaches a preset value, thereby having the advantage of reminding staff.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a drilling apparatus and method for preventing flooding and blowout in accordance with an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a cross-sectional view of the anti-overflow cap, drill pipe, drill floor, drill bit connection of FIG. 1;
FIG. 4 is a schematic diagram of the mechanism of the anti-overflow cap of FIG. 1;
FIG. 5 is a schematic view of the anti-overflow cap of FIG. 4;
FIG. 6 is a schematic view of an expansion assembly according to an embodiment of the present invention;
fig. 7 is a control schematic diagram of the central processing module in the embodiment of the invention.
Icon: the drilling machine comprises a drill bit, a 2-overflow preventing cover, a 201-first overflow preventing shell, a 202-second overflow preventing shell, a 3-drilling host machine, a 4-pendulum bob, a 5-fixed supporting rod, a 6-swinging rod, a 7-second flywheel, an 8-transmission frame, a 9-first flywheel, a 10-driving motor, a 11-rotating rod, a 12-central processing module, a 13-valve, a 14-drill rod, a 15-overflow pipe, a 16-airbag cover, a 17-drilling machine bottom plate, a 18-connecting block, a 19-expansion airbag, a 20-second pressure sensor, a 21-first pressure sensor and a 22-limiting plate.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present invention is conventionally put when used, it is merely for convenience of describing the present invention and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "plurality" means at least 2.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Examples
Referring to fig. 1-7, the present embodiment provides a drilling device for preventing overflow and blowout, which has the functions of preventing overflow and blowout.
The utility model provides an anti-overflow and blowout's drilling equipment, drilling machine bottom plate 17 including the level is placed, still include fixed stay pole 5, above-mentioned fixed stay pole 5 sets up in the upside of above-mentioned drilling machine bottom plate 17, the upside of above-mentioned fixed stay pole 5 transversely articulates there is pendulum 4, one end of above-mentioned pendulum 4 is connected with drilling host computer, the other end of above-mentioned pendulum 4 is connected with drives its wobbling power pack, the downside of above-mentioned drilling host computer 3 is equipped with rather than complex drilling rod 14, the downside of above-mentioned drilling rod 14 runs through the downside of above-mentioned fixed stay pole 5, the downside of above-mentioned drilling rod 14 is equipped with drill bit 1, the upside of above-mentioned drilling machine bottom plate 17 is equipped with anti-overflow cover 2, above-mentioned anti-overflow cover 2 cover is established on above-mentioned drilling rod 14, be connected with the overflow pipe 15 rather than the inner chamber intercommunication on the above-mentioned overflow cover 2, be equipped with valve 13 on the overflow pipe 15.
In the petroleum drilling process, the power supply of the power component is connected, the power component drives the pendulum 4 to move, the pendulum 4 drives the drilling host to move, the drilling host 3, the drill rod 14 and the drill bit 1 are matched, drilling is achieved, when the pressure of fluid in a wellhead is increased, the fluid in the wellhead outwards gushes out, the fluid enters the anti-overflow cover 2, the anti-overflow cover 2 has a sealing function, leakage of the fluid is avoided, when the pressure in the anti-overflow cover 2 is increased to a certain degree, the valve 13 is opened, the overflow pipe 15 of the fluid well in the anti-overflow cover 2 is discharged, and overflow and blowout in the drilling process can be effectively placed. The design of the invention has the functions of overflow prevention and blowout prevention.
In some embodiments of the present invention, the drill floor 17 is used for connection to the ground, and the fixed support bar 5 is a tripod.
In the above embodiment, the fixed support rod 5 is a tripod, forming a triangular support for the pendulum 4, and the triangular support has the advantages of high support stability and stable structure. It is particularly applicable to such large drilling devices in the present invention.
In some embodiments of the present invention, the drilling machine 3 and the power assembly are disposed at two sides of the fixed support bar 5, the power assembly includes a driving motor 10, the driving motor 10 is in driving connection with a first flywheel 9, the first flywheel 9 is in driving connection with an eccentric flywheel set, the eccentric flywheel set is connected with an eccentric rotation swinging rod 6, and one end of the swinging rod 6 away from the eccentric flywheel set is connected with the pendulum 4.
In the above embodiment, the eccentric flywheel set includes the driving frame 8, the driving frame 8 is provided with the second flywheel 7, the second flywheel 7 and the first flywheel 9 are driven by the belt, the second flywheel 7 is connected with the rotating rod 11 which rotates synchronously with the second flywheel, one end of the rotating rod 11 is connected with the second flywheel 7, the other end of the rotating rod 11 is connected with the swinging rod 6, the swinging rod 6 is driven to move in the rotating process of the rotating rod 11, and the swinging rod 6 drives the pendulum 4 to move.
In some embodiments of the present invention, the anti-overflow cover 2 has a cylindrical shape, the anti-overflow cover 2 has no lower sidewall forming an opening, the drill pipe 14 passes through the upper side of the anti-overflow cover 2, the anti-overflow cover 2 is composed of a first anti-overflow housing 201 and a second anti-overflow housing 202, the first anti-overflow housing 201 and the second anti-overflow housing 202 have the same shape, one side of the opposite surfaces of the first anti-overflow housing 201 and the second anti-overflow housing 202 is hinged, and the other side of the opposite surfaces of the first anti-overflow housing 201 and the second anti-overflow housing 202 is detachably connected.
In the above embodiment, the anti-overflow cover 2 is formed by butting the first anti-overflow housing 201 and the second anti-overflow housing, which has the advantage of convenient installation, and the opposite sides of the first anti-overflow housing 201 and the second anti-overflow housing 202 are provided with gaskets, so that the sealing performance of the anti-overflow cover 2 is better.
In some embodiments of the present invention, the lower side of the anti-overflow cover 2 is detachably connected to the drill floor 17, the lower sides of the first anti-overflow housing and the second anti-overflow housing are respectively provided with a connection block 18, the connection blocks 18 are disposed along the circumferential direction of the first anti-overflow housing, and the connection blocks 18 are connected to the drill floor 17 through bolts.
In the above embodiment, the screw hole is formed in the connection block 18, and the bolt is inserted through the screw hole to connect the connection block 18 with the drill floor, and the connection is performed by the bolt, so that the anti-overflow cover 2 and the drill floor have the advantage of quick detachment or connection.
In some embodiments of the present invention, the valve 13 is an electrically operated valve 13, and a control unit for controlling the opening and closing of the valve 13 is connected to the valve 13.
In the above embodiment, the control assembly can automatically control the opening and closing of the electric valve 13 to realize the passage or short circuit of the overflow pipe 15, and has the advantages of convenient control and higher automatic control capability.
In some embodiments of the present invention, the present invention comprises a first pressure sensor disposed in the anti-overflow cover 2, and further comprises a central processing module 12 disposed on the drill floor 17, wherein the central processing module 12 is connected to the first pressure sensor 21, and the valve 13 is connected to the central processing module 12.
In the above embodiment, the first pressure sensor 21 transmits the pressure data to the central processing module 12, a standard value is set on the central processing module 12, and when the data of the first pressure sensor 21 is greater than the set standard value, the central processing module 12 makes the valve 13 be in an open state, and the fluid in the anti-overflow cover 2 is discharged through the overflow pipe 15, so that the advantage of intelligent blowout prevention is achieved.
In some embodiments of the present invention, the drill pipe 14 is sleeved with an expansion assembly, the expansion assembly includes limiting plates 22 disposed opposite to each other along an axial direction of the drill pipe 14, the limiting plates 22 are sleeved on the drill pipe 14, an air bag cover 16 is disposed between the two limiting plates 22, the air bag cover 16 and the two limiting plates 22 form a closed wall, and an expansion air bag 19 is disposed inside the air bag cover 16.
In the above embodiment, when the overflow prevention is performed, the inflatable bag 19 is inflated and deformed, the inflatable bag 19 deforms the bag cover 16, the purpose of plugging the wellhead is achieved, and the wellhead has the overflow prevention function after sealing.
In some embodiments of the present invention, a second pressure sensor 20 is disposed outside the limiting plate 22, and the second pressure sensor 20 is connected to the central processing module 12.
In the above embodiment, the second pressure sensor 20 transmits the pressure data to the central processing module 12, a standard value is set on the central processing module 12, and when the data of the second pressure sensor 20 is greater than the set standard value, the central processing module 12 puts the inflatable air bag 19 in an open state, so that the benefit of fluid is avoided, and the intelligent anti-overflow advantage is achieved.
Examples
Referring to fig. 1-7, the present invention provides a method for implementing an anti-overflow and blowout drilling device, including the above drilling device, comprising the following steps:
drilling: the power supply of the power component is connected, the power component drives the pendulum bob 4 to swing, and the drilling host machine is driven to swing in the swinging process of the pendulum bob 4, and the drilling host machine, the drill rod 14 and the drill bit 1 are matched, so that the drill bit 1 punches the ground;
first-stage anti-overflow: when the drill bit 1 drills, the internal fluid pressure is outwards gushed when the pressure is overlarge, when the fluid passes through the second pressure sensor 20 on the limiting plate, the pressure of the second pressure sensor 20 reaches a certain time, the second pressure sensor 20 transmits a signal to the central processing module 12, the central processing module 12 inflates the inflation air bag 19, and the inflation air bag 19 inflates the air bag cover 16, so that the purpose of primary plugging in the well is achieved;
two-stage anti-overflow: because the inner area of the wellhead is uneven, the plugging effect of the expansion air bag 19 on the wellhead is poor, fluid leaks, the fluid flows into the anti-overflow cover 2, and the anti-overflow cover 2 has a secondary anti-overflow effect;
blowout prevention: when the pressure of the first pressure sensor in the anti-overflow housing 2 is too high, the central processing module 12 opens the valve 13 and fluid in the anti-overflow housing 2 can be discharged through the overflow pipe 15.
For the second aspect: in the process of fluid overflow in a wellhead, the primary overflow prevention and the secondary overflow prevention are matched, so that the overflow prevention effect is better, when the pressure of the first pressure sensor in the overflow prevention cover 2 is overlarge, the central processing module 12 enables the valve 13 to be opened, and the fluid in the overflow prevention cover 2 can be discharged through the overflow pipe 15, so that the overflow prevention cover has the function of automatic pressure relief. The invention also comprises an alarm module which is connected with the central processing module 12, and alarms when the pressure of the second pressure sensor 20 reaches a preset value, thereby having the advantage of reminding workers.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The drilling device is characterized by comprising a drilling machine bottom plate which is horizontally placed, and further comprising a fixed supporting rod, wherein the fixed supporting rod is arranged on the upper side of the drilling machine bottom plate, a pendulum is transversely hinged to the upper side of the fixed supporting rod, one end of the pendulum is connected with a drilling host, the other end of the pendulum is connected with a power assembly which drives the pendulum to swing, the lower side of the drilling host is provided with a drill rod matched with the drilling host, the lower side of the drill rod penetrates through the lower side of the fixed supporting rod, the lower side of the drill rod is provided with a drill bit, the upper side of the drilling machine bottom plate is provided with an anti-overflow cover, the anti-overflow cover is sleeved on the drill rod, an overflow pipe communicated with an inner cavity of the anti-overflow cover is connected with the anti-overflow cover, and a valve is arranged on the overflow pipe;
along the axial direction of the drill rod, the inner side surface of the anti-overflow cover is of a wavy structure;
the expansion assembly is sleeved on the drill rod and comprises limiting plates which are oppositely arranged along the axis direction of the drill rod, the limiting plates are sleeved on the drill rod, an air bag cover is arranged between the two limiting plates, the air bag cover and the two limiting plates form a closed wall body, and an expansion air bag is arranged on the inner side of the air bag cover.
2. The anti-overflow and blowout drilling apparatus as defined in claim 1, wherein the bottom plate of the drilling machine is adapted to be coupled to the ground, and wherein the fixed support bar is a tripod.
3. The anti-overflow and blowout drilling device according to claim 1, wherein the drilling host and the power assembly are arranged on two sides of the fixed support rod, the power assembly comprises a driving motor, the driving motor is in transmission connection with a first flywheel, the first flywheel is in transmission connection with an eccentric flywheel group, the eccentric flywheel group is connected with an eccentric rotation swinging rod, and one end of the swinging rod, which is far away from the eccentric flywheel group, is connected with the pendulum bob.
4. The anti-overflow and blowout drilling device according to claim 1, wherein the anti-overflow cover is cylindrical, no lower side wall of the anti-overflow cover forms an opening, the drill rod penetrates through the upper side of the anti-overflow cover, the anti-overflow cover is composed of a first anti-overflow shell and a second anti-overflow shell, the first anti-overflow shell and the second anti-overflow shell are identical in shape, one side of the opposite faces of the first anti-overflow shell and the second anti-overflow shell is hinged, and the other side of the opposite faces of the first anti-overflow shell and the second anti-overflow shell is detachably connected.
5. The anti-overflow and blowout drilling device of claim 4, wherein the underside of the anti-overflow cover is detachably connected with the bottom plate of the drilling machine, the undersides of the first anti-overflow shell and the second anti-overflow shell are respectively provided with a connecting block, the connecting blocks are arranged along the circumferential direction of the first anti-overflow shell, and the connecting blocks are connected with the bottom plate of the drilling machine through bolts.
6. An anti-flooding and blowout drilling apparatus according to any one of claims 1 to 5, wherein the valve is an electrically operated valve, and wherein the valve is connected to a control assembly for controlling the opening and closing thereof.
7. The anti-flooding and blowout drilling apparatus of claim 6, including a first pressure sensor disposed within the anti-flooding cap, and further including a central processing module disposed on the drill floor strip, the central processing module being coupled to the first pressure sensor, the valve being coupled to the central processing module.
8. The anti-flooding and blowout drilling device of claim 7, wherein a second pressure sensor is provided on the outside of the limiting plate, the second pressure sensor being connected to the central processing module.
9. A method of implementing an anti-flooding and blowout drilling apparatus comprising the drilling apparatus of claims 1-8, comprising the steps of:
drilling: the power supply of the power component is connected, the power component drives the pendulum bob to swing, and the drilling host machine is driven to swing in the swinging process of the pendulum bob, so that the drilling host machine, the drill rod and the drill bit are matched, and the drill bit is used for punching the ground;
first-stage anti-overflow: when the drill bit drills, the internal fluid pressure outwards gushes out when the pressure is overlarge, when the fluid passes through a second pressure sensor on the limiting plate, the pressure of the second pressure sensor reaches a certain value, the second pressure sensor transmits a signal to the central processing module, the central processing module inflates the inflation air bag, and the inflation air bag inflates the air bag cover, so that the purpose of primary plugging in the well is achieved;
two-stage anti-overflow: because the inner area of the wellhead is uneven, the plugging effect of the expansion air bag on the wellhead is poor, fluid leaks, the fluid flows into the anti-overflow cover, and the anti-overflow cover has the secondary anti-overflow effect;
blowout prevention: when the pressure of the first pressure sensor in the anti-overflow cover is too high, the central processing module enables the valve to be opened, and fluid in the anti-overflow cover can be discharged through the overflow pipe.
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| CN202011018729.3A CN112127836B (en) | 2020-09-24 | 2020-09-24 | Drilling device and method for preventing overflow and blowout |
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| CN202011018729.3A CN112127836B (en) | 2020-09-24 | 2020-09-24 | Drilling device and method for preventing overflow and blowout |
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| CN112127836B true CN112127836B (en) | 2023-06-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115324537A (en) * | 2021-12-08 | 2022-11-11 | 盐城瑞德石化机械有限公司 | Blowout-preventing oil exploitation equipment |
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