CN104863502B - A kind of gassiness soil layer anti-overflow and the safe drill devices and methods therefor of blowout - Google Patents
A kind of gassiness soil layer anti-overflow and the safe drill devices and methods therefor of blowout Download PDFInfo
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- CN104863502B CN104863502B CN201510195916.1A CN201510195916A CN104863502B CN 104863502 B CN104863502 B CN 104863502B CN 201510195916 A CN201510195916 A CN 201510195916A CN 104863502 B CN104863502 B CN 104863502B
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- drilling rod
- bar
- soil layer
- plugging device
- pressure
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B19/089—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 with a spring or an additional weight
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Abstract
The invention discloses the safe drill devices and methods therefor of a kind of gassiness soil layer anti-overflow and blowout, belongs to the technical field of construction in field of civil engineering.The device includes the total drilling rod being made up of some end to end drilling rods, the counterweight for being arranged at total drilling rod upper end, the drill bit for being arranged at total drilling rod lower end, plugging device and the outer plugging device of bar in bar are provided with least one drilling rod, plugging device and the outer plugging device of bar are respectively used to the pressure value in gassiness soil layer more than closure drilling rod internal channel and drilling rod outer tunnel during marginal value in bar.The mechanism of action of the present invention meets the infestation regularity of gassiness soil layer drilling, and the engineering characteristic of gassiness soil has been taken into full account in design；Efficiency of construction is high, flexible arrangement, it is adaptable to the drilling of various gassiness soil layers.Whole device ensure that the safety of construction operation in the boring procedure of gassiness soil layer, once there is overflow, blowout phenomenon, can block path immediately, it is ensured that the safety of personnel and facility.
Description
Technical field
The present invention relates to the safe drill devices and methods therefor of a kind of gassiness soil layer anti-overflow and blowout, belongs to civil engineering
Technical field of construction in field, is mainly used in the aspects such as engineering investigation and Construction of Engineering Pile.
Background technology
Gassiness soil layer is being distributed in the gas-containing sediment in Marsh Wetland, river mouth, delta and lake and sea bed the most
It is common.Air in soil body be derived mainly from organic matter under anaerobe effect the biogenetic gas that is decomposed to form and Deep Oil-gas,
Curtain gas and the produced Jing after seepage or diffusion of magma lithogenesis campaign are migrated the gas being closed in superficial soil layer upwards
Body, composition are the most universal with the organic genetic gas of rich CH4.Gas phase preservation in soil is more with bubble, solution gas or the air water of dissociating
The form of compound occurs.The Yangtze River Delta of China, Liaodong Wan beach areas, Huanghe delta open ocean, Shandong Peninsula shore
Sea is found in the geologic prospecting of shallow sea, South Yellow Sea, Hangzhou Wan, Zhoushan Islands, entrance of Changjiang River, the mouth of the Zhujiang River, the East Sea and South Sea continental shelf
There is the preservation evidence of shallow gas in bed superficial part, show that China coastal seas marine site is distributed with large-area gassiness soil layer from north to south.
But a large amount of CH4 gases contained in soil are also important engineering project disaster source.The famous Construction of Hangzhou Bay Cross-sea Bridge of China is reconnoitred in early stage
During also once there is submarine shallow gas blowout and cause ship to be spoken sarcastically the accident of wound.Therefore, in the construction operation meeting of gassiness soil layer
Cause engineering project disaster.The gassiness soil of lake sea-bottom deposit easily triggering seashore landslide, liquefaction of soil mass, yielding of foundation, oil gas blowout, platform
Topple, the disaster accident such as hole collapse, line break, to oil exploration and exploitation, drilling platforms, port and pier, tunnel over strait,
The engineering construction such as submarine transport oil pipeline and communication cable and inshore infrastructure constitute a serious threat, and are in the middle of engineering, especially
It is the important safety hidden danger in ocean engineering.As China greatly develops marine economy and strengthens the comprehensive exploitation profit to wetland
With all kinds of infrastructure constructions can be carried out in gassiness soil layer geologic province successively, in the urgent need to carrying out in gassiness soil layer
The equipment of safe drill operation.
The content of the invention
The purpose of the present invention is：A kind of simple structure is provided, is easy to that execute-in-place, construction costs are cheap, is met gassiness soil
The drilling equipment and boring method of layer safe drill.The present invention gives full play to burden pressure and gassiness soil layer overflow, blowout is put down
Weighing apparatus is acted on, and based on the obstruct of air bag, forms the drilling equipment with safeguard procedures and new method, meets the drilling catastrophe of gassiness soil layer
With the inherent law of protection.
Technical scheme is as follows：
A kind of gassiness soil layer anti-overflow and the safe drill device of blowout, including what is be made up of some end to end drilling rods
Total drilling rod, it is arranged at the counterweight of total drilling rod upper end, is arranged at the drill bit of total drilling rod lower end, is provided with least one drilling rod
Plugging device and the outer plugging device of bar in bar, in the bar, plugging device and the outer plugging device of bar are respectively used in gassiness soil layer
Pressure value closure drilling rod internal channel and drilling rod outer tunnel when exceeding marginal value.
As a further improvement on the present invention, in the bar, plugging device and the outer plugging device of bar are respectively arranged at drilling rod
Top and low side.
As a further improvement on the present invention, the bottom and top of many drilling rods be respectively mounted the outer plugging device of bar and
Plugging device in bar.
As a further improvement on the present invention, in the bar, plugging device includes pressure transducer, electronic control unit, point
Firearm, aerating agent, air bag, one end of the pressure transducer are extended to inside drilling rod, and the other end is connected with electronic control unit,
The side of the air bag is contacted with drilling rod internal gas, and opposite side is provided with aerating agent, when the pressure value in gassiness soil layer surpasses
When crossing marginal value, from the pressure information triggering electronic control unit control point firearm action of pressure transducer, cause aerating agent
Volumetric expansion, and then cause air bag to drilling rod internal expansion, so as to the inside for realizing drilling rod blocks.
As a further improvement on the present invention, the outer plugging device of the bar includes pressure transducer, electronic control unit, point
Firearm, aerating agent, air bag, one end of the pressure transducer are contacted with drilling rod extraneous gas, the other end and Electronic Control list
Unit is connected, and the side of the air bag is contacted with drilling rod extraneous gas, and opposite side is provided with aerating agent, the pressure in gassiness soil layer
When force value exceedes marginal value, from the pressure information triggering electronic control unit control point firearm action of pressure transducer, cause
Aerating agent volumetric expansion, and then cause air bag to drilling rod external expansion, so as to realize the outside closure of drilling rod.
A kind of gassiness soil layer anti-overflow and the safe drill method of blowout, its step include：
1) safe counterweight is set in the upper end of total drilling rod, lower end arranges drill bit；
2) on drill bit kelly bar bottom and top, be respectively mounted plugging device in the outer plugging device of bar and bar；
3) plugging device in the outer plugging device of bar and bar, respectively including pressure transducer, electronic control unit, lighter,
Aerating agent, air bag；
In bar, one end of the pressure transducer of plugging device is extended to inside drilling rod, the other end and electronic control unit phase
Even, the side of air bag is contacted with drilling rod internal gas, and opposite side is provided with aerating agent, when the pressure value in gassiness soil layer exceedes
During marginal value, from the pressure information triggering electronic control unit control point firearm action of pressure transducer, cause aerating agent body
Product expansion, and then cause air bag to drilling rod internal expansion, so as to the inside for realizing drilling rod blocks；
One end of the pressure transducer of the outer plugging device of bar contacts with drilling rod extraneous gas, the other end and Electronic Control list
Unit is connected, and the side of the air bag is contacted with drilling rod extraneous gas, and opposite side is provided with aerating agent, the pressure in gassiness soil layer
When force value exceedes marginal value, from the pressure information triggering electronic control unit control point firearm action of pressure transducer, cause
Aerating agent volumetric expansion, and then cause air bag to drilling rod external expansion, so as to realize the outside closure of drilling rod.
Further, the boring method adopts the bore mode of direct circulation or reacting cycle mud off, first above drill bit
Plugging device in root or the outer plugging device of many drilling rod mounting rods and bar, pile frame arrange safety according to the potential air pressure of gassiness soil layer
Counterweight；In boring procedure, when drill bit penetrates soil layer gassiness region, drill bit and the gentle pressure of first drilling rod region hydraulic pressure are suddenly
Increase, when the pressure value of pressure transducer test exceedes air pressure setting value, electronic control unit causes lighter, excited gas
Capsule, between drilling rod and drilling and drilling rod inner space is filled, cut-off gas eruption path；When completing having for gassiness zone gas
After effect release, then removal air bag pressure is reclaimed and changes drilling rod, continues bore operation.
The present invention has the beneficial effect that：
The mechanism of action of safe drill device meets the infestation regularity of gassiness soil layer drilling, and gassiness has been taken into full account in design
The engineering characteristic of soil；Efficiency of construction is high, flexible arrangement, it is adaptable to the drilling of various gassiness soil layers；Can also be according to gassiness soil layer
Gas pressure, multiple plugging devices are installed in drilling rod；The load counterweight of top pile frame can be calculated according to unsaturated soils theory
The gas pressure of method and gassiness soil layer pre-sets.Whole device ensure that construction operation in the boring procedure of gassiness soil layer
Safety, once occur overflow, blowout phenomenon, path can be blocked immediately, it is ensured that the safety of personnel and facility.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the safe drill device of gassiness soil layer anti-overflow of the present invention and blowout；
Fig. 2 is the drilling rod schematic diagram that plugging device is provided with the present invention；
Fig. 3 is the sectional structure chart of the outer plugging device of bar in the present invention；
Fig. 4 is the sectional structure chart of plugging device in bar in the present invention；
Fig. 5 is the workflow diagram of plugging device air bag in the present invention；
Fig. 6 is the working mechanism figure of the present invention.
In figure：1st, counterweight；2nd, drill bit；3rd, drilling rod；4th, plugging device in bar；5th, the outer plugging device of bar；6th, pressure transducer；
7th, electronic control unit；8th, lighter；9th, aerating agent；10th, air bag；11st, airbag cover；12nd, filter；13rd, total drilling rod；14th, it is interior
Male thread；15th, closure in bar；16th, block outside bar.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
A kind of gassiness soil layer anti-overflow of the present invention and the safe drill device of blowout, including by some end to end drilling rods
3 composition total drilling rods 13, be arranged at the counterweight 1 of 13 upper end of total drilling rod, be arranged at the drill bit 2 of 13 lower end of total drilling rod, its structure is such as
Shown in Fig. 1.Wherein, plugging device 4 and the outer plugging device 5 of bar, plugging device 4 in bar in bar are provided with least one drilling rod 3
The pressure value in gassiness soil layer is respectively used to the outer plugging device 5 of bar to block outside drilling rod internal channel and drilling rod more than during marginal value
Passage.
Used as a kind of preferred implementation of the present invention, in bar, plugging device 4 and the outer plugging device 5 of bar are respectively arranged at brill
The top of bar 3 and low side.The set-up mode is as shown in Figure 2.To reach more preferable plugging effect, in bar outside plugging device 4 and bar
Plugging device 5 can be arranged at the bottom and top of many drilling rods 3.
Used as a kind of preferred implementation of the present invention, in bar, the structure of plugging device 4 is as shown in figure 4, pass including pressure
Sensor 6, electronic control unit 7, lighter 8, aerating agent 9, air bag 10, one end of pressure transducer 6 are extended to inside drilling rod 3,
The other end is connected with electronic control unit 7, and the side of air bag 10 is contacted with 3 internal gas of drilling rod, and opposite side is provided with inflation
Agent 9.In the present embodiment, aerating agent 9 is specially Hydrazoic acid,sodium salt or ammonium nitrate.When the pressure value in gassiness soil layer exceedes marginal value
When, from pressure information triggering control 8 action of lighter of electronic control unit 7 of pressure transducer 6, cause 9 volume of aerating agent
Expansion, and then cause air bag 10 to 3 internal expansion of drilling rod, so as to the inside for realizing drilling rod blocks.
Used as a kind of preferred implementation of the present invention, the structure of the outer plugging device 5 of bar is as shown in figure 3, pass including pressure
Sensor 6, electronic control unit 7, lighter 8, aerating agent 9, air bag 10, one end and the 3 outside gas of drilling rod of the pressure transducer 6
Body phase is contacted, and the other end is connected with electronic control unit 7, and the side of the air bag 10 is contacted with 3 extraneous gas of drilling rod, another
Side is provided with aerating agent 9.In the present embodiment, aerating agent 9 is specially Hydrazoic acid,sodium salt or ammonium nitrate.Pressure value in gassiness soil layer
During more than marginal value, from pressure information triggering control 8 action of lighter of electronic control unit 7 of pressure transducer 6, initiation is filled
9 volumetric expansion of gas agent, and then cause air bag 10 to 3 external expansion of drilling rod, so as to realize the outside closure of drilling rod.
The filter filtered to gas is may be provided between air bag 10 and aerating agent 9.Air bag 10 with
The side that extraneous gas or internal gas contact may be provided for the airbag cover 11 of temporary enclosed.Plugging device 4 in bar
It is connected with drilling rod by interior male thread 14 with the outer plugging device 5 of bar.
A kind of gassiness soil layer anti-overflow of the present invention and the safe drill method of blowout, comprise the steps：
1) pile frame arranges certain safe counterweight, i.e., arrange safe counterweight in the upper end of total drilling rod, and lower end arranges drill bit；Foundation
Gassiness soil layer gas pressure, converses derrick heavy burden pressure, arranges and bear a heavy burden on derrick；
2) on drill bit kelly bar bottom and top, be respectively mounted plugging device in the outer plugging device of bar and bar；Wherein,
It is preferred that above the drill bit first drilling rod bottom and top, be respectively mounted plugging device in the outer plugging device of bar and bar；Install
It is front that igniter fire critical pressure value is arranged according to gassiness soil layer gas pressure；
3) plugging device in the outer plugging device of bar and bar, respectively including pressure transducer, electronic control unit, lighter,
Aerating agent, air bag and airbag cover；Plugging device agent structure be steel, upper lower interface inner-outer sleeve silk.Consider for reliability, often
Individual plugging device can arrange two pressure transducers；
4) complexity according to gassiness soil layer, is to improve safety stock, can select the bottom and top of many drilling rods, point
Plugging device in the outer plugging device of other mounting rod and bar.
The workflow of plugging device air bag of the present invention is as shown in Figure 5.The boring procedure of the drilling equipment is drilled with other
Equipment is consistent, can adopt the bore mode of direct circulation or reacting cycle mud off, (or many) drilling rod peace first above drill bit
Plugging device in the outer plugging device of dress bar and bar, pile frame arrange safe counterweight according to the potential air pressure of gassiness soil layer.Drilling
Cheng Zhong, when drill bit penetrates soil layer gassiness region, drill bit and first gentle pressure of drilling rod region hydraulic pressure suddenly increase, when pressure is passed
When the pressure value of sensor test exceedes air pressure setting value, electronic control unit causes lighter, excites air bag, by drilling rod and drilling
Between and the filling of drilling rod inner space, cut-off gas eruption path.After effective release of gassiness zone gas is completed, then removal
Air bag pressure is reclaimed changes drilling rod, continues bore operation.The method can provide safety guarantor for the drilling construction operation of gassiness soil layer
Barrier.
When gassiness soil layer atmospheric pressure value is higher, for safety stock, can be in the second of drilling machine or many drilling rods
Bottom and top, also plugging device in the outer plugging device of mounting rod and bar.Aerating gasbag is produced for balanced gas overflow, blowout
Pressure, pile frame need to arrange safe counterweight；Drilling protection method is applied to direct circulation and reacting cycle mud off pore-forming.
The working mechanism of the present invention is as shown in Figure 6.When drill bit position gas produces overflow or eruption, the outer plugging device of bar
Can raise suddenly with the pressure at plugging device pressure transducer in bar, when pressure value exceedes default marginal value, lighter
Igniting, gas eruption, air bag are inflated rapidly, with bar outer tunnel in closure bar.The gas pressure that overflow, blowout are produced is by blocking dress
Put top mud pressure and Drilling derrick counterweight balance.Gassiness soil layer gas overflow, the disaster of blowout initiation can be prevented and treated.Work as gas
After pressure is effectively discharged, drilling can recover construction.
The invention passes through plugging device and counterweight, solves overflow, the blowout produced in preventing and treating gassiness soil layer boring procedure
Disaster problem.Suitable for various types of gassiness soil layers, while arrangement form is simple, constructing operation is easy, it can also be used to shallow-layer
Gas is exploited, and its future in engineering applications is wide.
In sum, the invention belongs to drill in gassiness soil layer anti-overflow, the safe drill new equipment of blowout and new method,
For the catastrophe characteristic in gassiness soil layer boring procedure, the safe drill device for overflow, blowout is designed.In gassiness soil layer
Middle development engineering investigation and Construction of Engineering Pile, when gas eruption is run in boring procedure, the device can start immediately, block gas
Eruption path, the engineering project disaster for preventing overflow, blowout from causing, reduces personnel and property loss.The device can be also fitted through transformation
For the exploitation of shallow gas.
The invention combines the evolutionary process of drilling catastrophe during gassiness earth boring auger hole, by pressure transducer Jing Electronic Control lists
Unit's triggering lighter, excites air bag cut-off gas eruption path, prevents foundation instability, drilling well caused by gassiness soil layer gas eruption
Cave in, so as to maintain borehole stability, be that shallow gas Distribution Area engineering investigation and Construction of Engineering Pile provide technical support, while
Beneficial reference can be provided for the exploitation of shallow gas.The method can provide safety guarantee for the drilling construction operation of gassiness soil layer, fit
For shallow gas distributed areas, its future in engineering applications is wide.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention.All essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (6)
1. the safe drill device of a kind of gassiness soil layer anti-overflow and blowout, including being made up of some end to end drilling rods (3)
Total drilling rod (13), be arranged at the counterweight (1) of total drilling rod (13) upper end, be arranged at the drill bit (2) of total drilling rod (13) lower end, which is special
Levying is：Plugging device in bar (4) and the outer plugging device (5) of bar, closure in the bar are provided with least one drilling rod (3)
Device (4) and the outer plugging device (5) of bar are respectively used to lead in closure drilling rod when the pressure value in gassiness soil layer exceedes marginal value
Road and drilling rod outer tunnel；In the bar, plugging device (4) includes pressure transducer (6), electronic control unit (7), lighter
(8), aerating agent (9), air bag (10), one end of the pressure transducer (6) extend to drilling rod (3) inside, the other end and electronics
Control unit (7) is connected, and the side of the air bag (10) is contacted with drilling rod (3) internal gas, and opposite side is provided with aerating agent
(9), when the pressure value in gassiness soil layer exceedes marginal value, from the pressure information triggering Electronic Control of pressure transducer (6)
Unit (7) controls lighter (8) action, causes aerating agent (9) volumetric expansion, and then causes air bag (10) internal to drilling rod (3)
Expansion, so as to the inside for realizing drilling rod blocks.
2. the safe drill device of gassiness soil layer anti-overflow according to claim 1 and blowout, is characterized in that：In the bar
Plugging device (4) and the outer plugging device (5) of bar are respectively arranged at top and the low side of drilling rod (3).
3. the safe drill device of gassiness soil layer anti-overflow according to claim 1 and blowout, is characterized in that：Described in many
The bottom and top of drilling rod (3) is respectively mounted plugging device (4) in the outer plugging device (5) of bar and bar.
4. gassiness soil layer anti-overflow according to claim 1 or 2 or 3 and the safe drill device of blowout, is characterized in that：Institute
The outer plugging device (5) of bar is stated including pressure transducer (6), electronic control unit (7), lighter (8), aerating agent (9), air bag
(10), one end of the pressure transducer (6) is contacted with drilling rod (3) extraneous gas, the other end and electronic control unit (7) phase
Even, the side of the air bag (10) is contacted with drilling rod (3) extraneous gas, and opposite side is provided with aerating agent (9), when gassiness soil layer
In pressure value exceed marginal value when, from pressure transducer (6) pressure information triggering electronic control unit (7) control igniting
Device (8) action, causes aerating agent (9) volumetric expansion, and then causes air bag (10) to drilling rod (3) external expansion, so as to realize boring
The outside closure of bar.
5. a kind of safe drill method of gassiness soil layer anti-overflow and blowout, its step include：
1) safe counterweight is set in the upper end of total drilling rod, lower end arranges drill bit；
2) on drill bit kelly bar bottom and top, be respectively mounted plugging device in the outer plugging device of bar and bar；
3) plugging device in the outer plugging device of bar and bar, respectively including pressure transducer, electronic control unit, lighter, inflation
Agent, air bag；
In bar, one end of the pressure transducer of plugging device is extended to inside drilling rod, and the other end is connected with electronic control unit, gas
The side of capsule is contacted with drilling rod internal gas, and opposite side is provided with aerating agent, when the pressure value in gassiness soil layer is more than critical
During value, from the pressure information triggering electronic control unit control point firearm action of pressure transducer, cause aerating agent volume swollen
It is swollen, and then cause air bag to drilling rod internal expansion, so as to the inside for realizing drilling rod blocks；
One end of the pressure transducer of the outer plugging device of bar is contacted with drilling rod extraneous gas, the other end and electronic control unit phase
Even, the side of the air bag is contacted with drilling rod extraneous gas, and opposite side is provided with aerating agent, the pressure value in gassiness soil layer
During more than marginal value, from the pressure information triggering electronic control unit control point firearm action of pressure transducer, cause inflation
Agent volumetric expansion, and then cause air bag to drilling rod external expansion, so as to realize the outside closure of drilling rod.
6. the safe drill method of gassiness soil layer anti-overflow according to claim 5 and blowout, is characterized in that：The drilling
Method adopts the bore mode of direct circulation or reacting cycle mud off, is blocked above drill bit outside one or more drilling rod mounting rod
Plugging device in device and bar, pile frame arrange safe counterweight according to the potential air pressure of gassiness soil layer；In boring procedure, work as drill bit
When penetrating soil layer gassiness region, drill bit and first gentle pressure of drilling rod region hydraulic pressure suddenly increase, when pressure transducer test
When pressure value exceedes air pressure setting value, electronic control unit causes lighter, excites air bag, by between drilling rod and drilling and drilling rod
Inner space is filled, cut-off gas eruption path；After effective release of gassiness zone gas is completed, then removal air bag pressure is returned
Receive and change drilling rod, continue bore operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195916.1A CN104863502B (en) | 2015-04-22 | 2015-04-22 | A kind of gassiness soil layer anti-overflow and the safe drill devices and methods therefor of blowout |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195916.1A CN104863502B (en) | 2015-04-22 | 2015-04-22 | A kind of gassiness soil layer anti-overflow and the safe drill devices and methods therefor of blowout |
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| CN104863502A CN104863502A (en) | 2015-08-26 |
| CN104863502B true CN104863502B (en) | 2017-03-29 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915630A (en) * | 2018-09-04 | 2018-11-30 | 北京泰利新能源科技发展有限公司 | A kind of simple plugging device |
| CN112127836B (en) * | 2020-09-24 | 2023-06-27 | 兰州工业学院 | Drilling device and method for preventing overflow and blowout |
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| CN202090890U (en) * | 2011-05-26 | 2011-12-28 | 西南石油大学 | Underground drill string near bit check valve |
| RU2439274C1 (en) * | 2011-03-16 | 2012-01-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Well construction method |
| CN202117572U (en) * | 2011-05-26 | 2012-01-18 | 西南石油大学 | Drill string equipped with downhole blowout preventer |
| CN202325370U (en) * | 2011-11-21 | 2012-07-11 | 盐城华亚石油机械制造有限公司 | Two-stage sealing eccentricity-preventing blowout preventer of sucker rod |
| CN203321418U (en) * | 2013-06-28 | 2013-12-04 | 西南石油大学 | Near-bit downhole blowout preventer |
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2015
- 2015-04-22 CN CN201510195916.1A patent/CN104863502B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2439274C1 (en) * | 2011-03-16 | 2012-01-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Well construction method |
| CN202090890U (en) * | 2011-05-26 | 2011-12-28 | 西南石油大学 | Underground drill string near bit check valve |
| CN202117572U (en) * | 2011-05-26 | 2012-01-18 | 西南石油大学 | Drill string equipped with downhole blowout preventer |
| CN202325370U (en) * | 2011-11-21 | 2012-07-11 | 盐城华亚石油机械制造有限公司 | Two-stage sealing eccentricity-preventing blowout preventer of sucker rod |
| CN203321418U (en) * | 2013-06-28 | 2013-12-04 | 西南石油大学 | Near-bit downhole blowout preventer |
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| CN104863502A (en) | 2015-08-26 |
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