CN215369761U - Gas explosion inertial siphon negative pressure drilling system - Google Patents
Gas explosion inertial siphon negative pressure drilling system Download PDFInfo
- Publication number
- CN215369761U CN215369761U CN202120756038.7U CN202120756038U CN215369761U CN 215369761 U CN215369761 U CN 215369761U CN 202120756038 U CN202120756038 U CN 202120756038U CN 215369761 U CN215369761 U CN 215369761U
- Authority
- CN
- China
- Prior art keywords
- gas
- drilling
- pipeline
- control valve
- electric control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a gas explosion inertial siphon negative pressure drilling system, which relates to the technical field of drilling and comprises the following components: the drilling device comprises a drill rod and a drill bit; the gas injection device comprises a nitrogen source which is communicated with the drill rod through a gas injection pipeline; the boosting water injection device comprises a pulse boosting energy storage water tank, and the pulse boosting energy storage water tank is communicated with the drill rod through a water injection pipeline; and the wellhead of the shaft is communicated with a return recovery device through a return pipeline. The utility model continuously injects gas and pressurizes water into the well by arranging the gas injection device, the pressurized water injection device and the well drilling device, utilizes the liquid control to generate the piston effect to siphon and generate wake flow on the basis of the underbalanced well drilling process, generates the tensile stress vertically acting on the rock stratum with the sectional area of the well bottom in the longitudinal direction, increases the stratum prying, utilizes the siphon to carry and return rock debris, realizes well drilling, greatly improves the well drilling efficiency on the basis of exerting the speed acceleration advantage of the underbalanced well drilling process, and solves various problems of the traditional underbalanced well drilling.
Description
Technical Field
The utility model relates to the technical field of well drilling, in particular to a gas explosion inertial siphon negative pressure well drilling system.
Background
At present, in petroleum engineering, only acting force is utilized, but reaction force is not utilized, so that the engineering efficiency is finished by 50% at most, for example, the petroleum exploitation rate does not exceed 40%, most of difficultly utilized energy sources such as coal combustible ice and the like cannot be utilized, the situation of unbalance of geothermal drilling cost cannot meet the requirement of high-speed development of human society all the time, and the main contradiction that the energy crisis greatly hinders the survival and development of human beings is caused.
The traditional drilling process adopts liquid as drilling fluid to circularly carry rock debris to keep advancing. The drilling fluid is influenced by the gravity to generate accumulated pressure, the accumulated pressure generates a pressure holding effect on the rock at the bottom of the well, the mechanical property of the drilling fluid is mainly displayed by plasticity and toughness, and the drillability of the rock is reduced. Because the magnitude of the accumulated pressure generated by the drilling fluid is in direct proportion to the height and the density of a fluid column, the drilling capability is related to the power, the well depth, the diameter, the material of a drill bit, the specific gravity of liquid and the mechanical property of a rock stratum of a drilling machine, the rock breaking difficulty of the drill bit is increased along with the increase of the well depth under the condition, and the traditional drilling process has the disadvantages of slow drilling speed, huge power of a deep well drilling machine and high operation cost.
In order to solve the problem of mechanical properties of downhole rock in the traditional drilling process, an underbalanced drilling process has been proposed and developed in the prior art, and low-density drilling fluid is used as a drilling circulating medium. Exemplified with a gas drilling fluid: the gas as the drilling fluid has the advantages that the earth attraction basically does not generate accumulated pressure on a gas medium, the gas medium can be used as a circulating medium to carry rock debris, and after the gas medium has the function of carrying the rock debris, the pressure holding effect of a well bottom rock stratum is released, so that the plasticity and the toughness of the rock stratum are changed into brittleness, favorable conditions are created for breaking the rock by a drill bit, and the mechanical drilling speed is greatly improved.
However, the gas underbalance process has a plurality of problems in practical application:
(1) the most unscrupulous of gas drilling is water production in the well. Because the water creates a build-up of pressure on the bottom of the well, it can impede or even stop the gas circulation. The existing coping method is to increase the power of a compressor/a booster to greatly increase the gas pressure and offset the accumulated pressure generated by yielding water, so that the investment and the operation cost of field equipment are huge;
(2) the drilling tool generates friction heating with the well wall when the drilling tool generates deflection due to the application of drilling pressure, and the rock debris generates sticking with the drilling tool and the well wall in the upward returning process;
(3) because the diameter changes, rotational flow easily occurs at the joint of the drill collar and the drill rod, and fine rock debris can be accumulated. Due to the influence of the humidity in the well, when the rock debris is seriously accumulated, a drilling holding accident can occur;
(4) the difficulty of gas control is higher than that of liquid, the liquid can automatically flow from a high position to a low position by using the gravity of the earth, and the gas is required to be controlled by a sealing pipe, otherwise, the gas leaks to pollute the environment;
(5) the gas flow speed is high, and the impact on the pipe fitting is large by carrying rock debris, so that the pipe fitting is easy to puncture particularly at a turning position;
(6) the weight on bit is also critical because of the difficulty in preventing the bias drilling due to the gyro effect.
The application range of the underbalanced drilling technology based on the problems is greatly reduced, but the advantages of the underbalanced drilling technology are still obvious, the drilling speed is improved by 5-8 times compared with that of the traditional liquid drilling, and the power of a drilling machine can be reduced by 60%. If the air hammer is replaced, the drilling speed can be increased by 10-15 times.
Based on the problems, the utility model provides a gas explosion inertial siphon negative pressure system and a gas explosion inertial siphon negative pressure process, which solve a plurality of problems of the traditional underbalanced drilling process on the basis of exerting the advantage of accelerating the underbalanced drilling process.
SUMMERY OF THE UTILITY MODEL
Aiming at the problem in practical application, the utility model aims to provide a gas explosion inertial siphon negative pressure drilling system, which comprises the following specific schemes:
a gas burst inertial siphon negative pressure drilling system, the drilling system comprising:
the drilling device extends into a shaft and comprises a drill rod and a drill bit, wherein an injection channel is formed in the drill rod, and a return channel is formed between the drill rod and the shaft;
the gas injection device is used for injecting gas into the drill rod and comprises a nitrogen source, and the nitrogen source is communicated with the drill rod through a gas injection pipeline;
the boosting water injection device is used for boosting water injection into the drill rod and comprises a pulse boosting energy storage water tank, the pulse boosting energy storage water tank is communicated with the drill rod through a water injection pipeline, and the water outlet end of the pulse boosting energy storage water tank is also communicated with a drilling fluid emptying pipeline;
and the wellhead of the shaft is communicated with a return recovery device through a return pipeline.
Further, still include gas injection moisturizing device on the pressure boost water injection device, gas injection moisturizing device is used for annotating gas moisturizing in to pulse pressure boost energy storage water pitcher, including drilling fluid holding vessel and pump, the drilling fluid holding vessel passes through the moisturizing pipeline intercommunication pulse pressure boost energy storage water pitcher, be equipped with the pump on the moisturizing pipeline, pulse pressure boost energy storage water pitcher goes out the water end and even ventilates the holding vessel through pressure release evacuation pipeline.
Further, a first electric control valve, a second electric control valve and a third electric control valve are sequentially arranged on the gas injection pipeline;
a fourth electric control valve and a fifth electric control valve are sequentially arranged on the water injection pipeline;
the fourth electric control valve, the pulse supercharging energy storage water tank and the fifth electric control valve are positioned between the first electric control valve and the third electric control valve and are connected with the second electric control valve in parallel;
a sixth electric control valve is arranged on the air supply pipeline, and a seventh electric control valve is arranged on the pressure relief emptying pipeline;
an eighth electric control valve is arranged on the return pipeline;
the gas injection pipeline is also provided with a pressure sensor, a gas flow sensor and a drill rod pressure sensor;
and a sleeve pressure sensor is also arranged on the return pipeline.
Furthermore, a drilling fluid emptying pipeline is further arranged at the water outlet end of the pulse pressurization energy storage water tank, and a ninth electric control valve is arranged on the drilling fluid emptying pipeline.
Furthermore, safety modules are arranged on the drilling fluid storage tank, the gas storage tank and the returned object recovery equipment.
Furthermore, the drilling device also comprises a drilling platform and a blowout preventer, the shaft is arranged below the drilling platform, the drill rod extends downwards into the shaft from the upper part of the drilling platform, and the blowout preventer is arranged at the top end of the shaft and used for sealing the shaft.
A gas explosion inertial siphon negative pressure well drilling process comprises the following steps:
1) arranging a drill pipe into the shaft and forming a return channel between the drill pipe and the inner wall of the shaft;
2) gas injection: according to the measured values of the sensors, the fourth electric control valve and the fifth electric control valve are closed, the first electric control valve, the second electric control valve and the third electric control valve are opened, and a nitrogen source conveys nitrogen into the well through a gas injection pipeline;
3) pressurizing and water injection: closing the second electric control valve, the sixth electric control valve, the seventh electric control valve, the ninth electric control valve and the pump, opening the fourth electric control valve and the fifth electric control valve, and pushing the drilling fluid in the pulse pressurization energy storage water tank into the well by using high-pressure nitrogen in a nitrogen source;
4) adjusting the frequency of pressurizing water injection according to the conditions in the well, repeating the operations in the step 2) and the step 3), continuously injecting gas and pressurizing water into the well, enabling drilling fluid and nitrogen to enter a drill rod at intervals, generating a piston effect by using liquid control on the basis of gas underbalance to perform siphoning to generate wake flow, generating tensile stress, and increasing the force of prying a convex drum by a stratum to realize drilling;
5) various mediums generated by drilling are conveyed to a return recovery device through a return channel by using siphoning.
Further, the step 3) further comprises gas injection and water supplement: and according to the measured values of the sensors, the fourth electric control valve and the fifth electric control valve are closed, the ninth electric control valve, the sixth electric control valve and the seventh electric control valve are opened, the pump supplies drilling fluid to the pulse supercharging energy storage water tank, and in the process, the ninth electric control valve is automatically closed when meeting the fluid.
Further, the nitrogen flow rate into the well in the step 2) reaches 15.24m/s, and the nitrogen pressure is increased along with the increase of the well depth and the water yield.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the gas injection device and the pressurized water injection device are arranged, the gas injection device and the pressurized water injection device are continuously used for injecting gas and pressurizing water into the well through the drilling device, on the basis of the underbalance process, the piston effect is generated by liquid control to siphon to generate wake flow, negative pressure is generated on the surface of the stratum, so that pressure difference is formed between the surface of the stratum and the inner part of the stratum, tensile stress which vertically acts on a stratum with the sectional area of the bottom hole in the longitudinal direction is generated, the stratum is pried to be increased, the drilling engineering is realized, and rock debris is carried and returned by the siphon.
Drawings
Fig. 1 is an overall schematic diagram of an embodiment of the present invention.
Reference numerals: 1. a drill stem; 2. a drill bit; 3. an injection channel; 4. a return channel; 5. a nitrogen source; 6. a pulse pressurization energy storage water tank; 7. a wellbore; 8. a pump; 9. a first electrically controlled valve; 10. a second electrically controlled valve; 11. a third electrically controlled valve; 12. a fourth electrically controlled valve; 13. a fifth electrically controlled valve; 14. a sixth electrically controlled valve; 15. a seventh electrically controlled valve; 16. an eighth electrically controlled valve; 17. a sensor of pressure; 18. a gas flow sensor; 19. a drill stem pressure sensor; 20. a casing pressure sensor; 21. a ninth electrically controlled valve; 22. a security module; 23. a drilling platform; 24. a well plugging device.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
It should be noted that the drilling of wells in the present invention is based on the characteristics of liquids and gases in the natural environment, including:
characteristics of liquids in the natural environment: 1. the liquid can be evaporated and expanded when the temperature is influenced to be above zero, and can be frozen and contracted when the temperature is below zero; 2. the liquid can generate accumulated pressure under the action of the gravity of the earth, and the pressure depends on the height and the density of the liquid; 3. the liquid is influenced by the gravity of the earth to act vertically downwards, and is influenced by the gravity of the moon to generate tide rise and tide fall which can suspend in vacuum; 4. if the direction of the liquid phase flow is changed by mechanical work, the acting force generated by the accumulated pressure is the same as the reacting force power (not counting the frictional resistance); 5. the liquid is basically not compressed by external force, can conduct pressure and can change direction under the control condition; 6. the flow rate of the liquid is proportional to the pressure. The higher the flow velocity of the fluid in the final flow, the higher the resistance; 7. the liquid only generates siphon and inertia phenomena in gas and vacuum environments, the phenomenon can generate a wake effect of reaction force, and the wake effect is more than one hundred times of the effect of the reaction force after the inertia is generated; 8. the density of the liquid is higher than that of the gas, the moving speed is lower than that of the gas by thousands of times under the condition of the same mass, and the moving speed can reach thousands of times in vacuum.
Characteristics of gas in natural environment: 1. can be swallowed or swallowed; 2. can be compressed and burst; 3. no build-up pressure (commercially negligible); 4. easy flowing needs to be controlled; 5. the density is 1/800 clear water. 1/10 for a density of only liquid when its aerodynamic force is greater than that of liquid; the gas density reaches liquid 1/3 after the aerodynamic force reaches the detonation point; when the inertia phenomenon is generated, the density is instantaneously reduced, and the reaction force is immediately converted into wake flow siphon force; 6. the liquid movement in the gas is slightly influenced by density and greatly influenced by attraction; 7. the gas pressure build-up is small and the inertial siphon force is large. The gas conduction and penetration force are better than those of the liquid with high density.
Based on the characteristics, the utility model utilizes the liquid control to generate the piston effect to siphon to generate wake flow on the gas underbalance drilling technology, generates the tensile stress vertically acting on the rock stratum with the sectional area of the well bottom in the longitudinal direction, and increases the effect of prying and bulging force of the rock stratum to realize the drilling and greatly improve the drilling speed.
Specifically, as shown in fig. 1, a gas explosion inertial siphon negative pressure drilling system comprises: the gas explosion inertia siphon negative pressure well drilling device comprises a well drilling device, a gas injection device and a pressurizing water injection device, wherein nitrogen and drilling fluid are continuously injected into the well drilling device through the gas injection device and the pressurizing water injection device, so that gas explosion inertia siphon negative pressure well drilling is realized.
In one possible embodiment, shown in fig. 1, a drilling device, which extends into a wellbore 7, comprises a drill string 1 and a drill bit 2, an injection channel 3 being formed in the drill string 1 and a return channel 4 being formed between the drill string 1 and the wellbore 7.
The drilling device further comprises a drilling platform 23 and a blowout preventer 24, the wellbore 7 is mounted below the drilling platform 23, the drill pipe 1 extends from above the drilling platform 23 down into the wellbore 7, and the blowout preventer 24 is mounted at the top end of the wellbore 7 for sealing the wellbore 7.
The gas injection device is used for injecting gas into the drill rod 1 and comprises a nitrogen source 5, wherein the nitrogen source 5 is communicated with the drill rod 1 through a gas injection pipeline, and a first electric control valve 9, a second electric control valve 10 and a third electric control valve 11 are sequentially arranged on the gas injection pipeline. The first electric control valve 9 is used as a power supply main switch, the second electric control valve 10 is used as an in-well gas injection switch, and the third electric control valve 11 is used as a well control switch.
The gas injection line is also provided with a pressure sensor 17, a gas flow sensor 18 and a drill rod pressure sensor 19. Wherein a pressure sensor 17 and a gas flow sensor 18 are arranged before the first electrically controlled valve 9 and close to the nitrogen source 5, and a drill rod pressure sensor 19 is arranged after the third electrically controlled valve 11 and close to the drill rod 1.
The boosting water injection device is used for boosting water injection into the drill rod 1 and comprises a pulse boosting energy storage water tank 6, and the pulse boosting energy storage water tank 6 is communicated with the drill rod 1 through a water injection pipeline; a fourth electric control valve 12 and a fifth electric control valve 13 are sequentially arranged on the water injection pipeline. The fourth electric control valve 12 and the fifth electric control valve 13 are used as water injection control switches.
The water injection pipeline is connected with the gas injection pipeline in parallel, and the fourth electric control valve 12, the pulse supercharging energy storage water tank 6 and the fifth electric control valve 13 are positioned between the first electric control valve 9 and the third electric control valve 11 and are connected with the second electric control valve 10 in parallel.
The water outlet end of the pulse pressurizing energy-storing water tank 6 is also communicated with a drilling fluid emptying pipeline, a ninth electric control valve 21 is arranged on the drilling fluid emptying pipeline, and the ninth electric control valve 21 is used as an emptying switch of the pulse pressurizing energy-storing water tank 6.
Still include gas injection moisturizing device on the pressure boost water injection device, gas injection moisturizing device is used for annotating gas moisturizing in to pulse pressure boost energy storage water pitcher 6, including drilling fluid holding vessel and pump 8, the drilling fluid holding vessel passes through moisturizing pipeline intercommunication pulse pressure boost energy storage water pitcher 6, is equipped with pump 8 on the moisturizing pipeline, and 6 water outlet ends of pulse pressure boost energy storage water pitcher are through pressure release evacuation pipeline even the holding vessel of ventilating.
A sixth electric control valve 14 is arranged on the air supply pipeline, and the sixth electric control valve 14 is positioned between the fourth electric control valve 12 and the pulse pressurization energy storage water tank 6 and is used as a filling valve of the pulse pressurization energy storage water tank 6; and a seventh electric control valve 15 is arranged on the pressure relief and evacuation pipeline, the seventh electric control valve 15 is positioned between the pulse pressurization energy storage water tank 6 and the seventh electric control valve 15, and the seventh electric control valve 15 is used as a pressure relief and evacuation switch of the pulse pressurization energy storage water tank 6.
And a drilling fluid emptying pipeline is also arranged at the water outlet end of the pulse pressurizing energy storage water tank 6, and a ninth electric control valve 21 is arranged on the drilling fluid emptying pipeline.
The wellhead of the shaft 7 is communicated with a returned object recovery device through a return pipeline, an eighth electric control valve 16 is arranged on the return pipeline, the eighth electric control valve 16 is used as a casing control switch, and a casing pressure sensor 20 is further arranged on the return pipeline.
A gas explosion inertial siphon negative pressure well drilling process comprises the following steps:
first, 1) the drill rod 1 is arranged into the wellbore 7 and a return channel 4 is formed between the drill rod 1 and the inner wall of the wellbore 7.
Subsequently, 2) gas injection: according to the measured values of the sensors (including the pressure sensor 17, the drill rod pressure sensor 19 and the casing pressure sensor 20), the fourth electric control valve 12 and the fifth electric control valve 13 are closed, the first electric control valve 9, the second electric control valve 10 and the third electric control valve 11 are opened, and the nitrogen gas source 5 conveys nitrogen gas into the well through the gas injection pipeline, namely conveys the nitrogen gas into the injection channel 3 in the drill rod 1.
The gas is used as a circulating medium to carry other necessary drilling fluid such as rock debris and the like, and two factors are required, namely the nitrogen flow rate entering the well in the step 2) reaches 15.24m/s, and the nitrogen pressure is increased along with the increase of the well depth and the water yield.
And then, 3) pressurizing and injecting water: and closing the second electric control valve 10, the sixth electric control valve 14, the seventh electric control valve 15, the ninth electric control valve 21 and the pump 8, opening the fourth electric control valve 12 and the fifth electric control valve 13, and pushing the drilling fluid in the pulse pressurization energy storage water tank 6 into the well by using high-pressure nitrogen in the nitrogen source 5, namely pushing the drilling fluid into the injection channel 3.
In the process of pressure boost water injection, in order to avoid the situation that the water supply is insufficient in the pulse pressure boost energy storage water tank 6, step 3) still includes gas injection moisturizing: according to the measured values of the sensors, the fourth electric control valve 12 and the fifth electric control valve 13 are closed, the ninth electric control valve 21, the sixth electric control valve 14 and the seventh electric control valve 15 are opened, the pump 8 supplements drilling fluid to the pulse pressurization energy storage water tank 6, and in the process, the ninth electric control valve 21 is automatically closed when meeting the fluid.
And then, 4) adjusting the pressurization water injection frequency according to the conditions in the well, repeating the operations in the step 2) and the step 3), continuously injecting gas and pressurization water into the well, enabling drilling fluid and nitrogen to enter the drill rod 1 at intervals, and generating a piston effect by utilizing liquid control on the basis of gas underbalance to siphon to generate wake flow so as to generate tensile stress and increase the prying convex drum force of the stratum to realize well drilling. Finally, 5) siphoning is used to transport the various media produced by the drilling via the return channel 4 to the return recovery plant.
The method adopts the negative pressure formed by the action of gas and liquid to form the pressure difference between the surface of the stratum and the inner part of the stratum, so that the well can enter the deep well in advance to pry the stratum, the rock debris stripped by the drill bit 2 has a lighter effect, and the debris returning effect is better.
The wake siphon power is generated by gas (nitrogen) power, because the gas can generate explosive force by being pushed when the density is increased by 1/3 times while generating power. Because of the low density, the penetration capacity is strong, the resistance is small, so that various siphoned media can be automatically and orderly stored in the volume of gas, and the core of the wake effect is located.
Wherein, the siphon capacity is in direct proportion to explosive force, pressure, flow velocity and flow. The duration of the negative pressure action is in direct proportion to the height of the shaft 7, the required negative pressure frequency is related to the liquid quantity control, and the negative pressure effect in the well is manually controllable.
The speed of the mechanical drilling is related to the magnitude of the negative pressure, and the negative pressure can be increased by 0.1 m/min (for example, 35 MPa, which can be increased by 3.5 m/min) per MPa.
And, under the low temperature condition of nitrogen gas, can effectively cool off the heat that the friction produced between drill bit 2 and the stratum, help avoiding the detritus to go back the phenomenon that the in-process takes place to stick to block with drilling tool, pit shaft 7 wall of a well and appear.
The specific implementation principle of the utility model is as follows: on the basis of giving play to the speed-up advantage of the underbalanced drilling process, aiming at a plurality of problems of the traditional underbalanced drilling process, the natural science gas-liquid two-phase relative theory is applied to the drilling engineering, the gas explosion inertia siphon negative pressure drilling technology is adopted, the drilling efficiency can be improved by 35-50 times when the underground pressure is 35 MPa, and if the inertia guidance force is achieved, the drilling rotating speed can be improved by 100-200 times, so that the drilling efficiency is greatly improved.
The application prospect of high-speed drilling is not limited to petroleum drilling, geothermal drilling engineering application aiming at developing new geothermal energy becomes mainstream, the mechanical drilling speed of negative pressure drilling exceeds all current drilling technologies, and the development of geothermal energy with the lead is moved to a commercial explosive application stage.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (6)
1. A gas burst inertial siphon negative pressure drilling system, comprising:
the drilling device extends into a shaft (7) and comprises a drill rod (1) and a drill bit (2), an injection channel (3) is formed in the drill rod (1), and a return channel (4) is formed between the drill rod (1) and the shaft (7);
the gas injection device is used for injecting gas into the drill rod (1) and comprises a nitrogen source (5), and the nitrogen source (5) is communicated with the drill rod (1) through a gas injection pipeline;
the boosting water injection device is used for boosting water injection into the drill rod (1) and comprises a pulse boosting energy storage water tank (6), the pulse boosting energy storage water tank (6) is communicated with the drill rod (1) through a water injection pipeline, and the water outlet end of the pulse boosting energy storage water tank (6) is also communicated with a drilling fluid emptying pipeline;
and the wellhead of the shaft (7) is communicated with a return recovery device through a return pipeline.
2. The gas explosion inertial siphon negative pressure drilling system according to claim 1, characterized in that the pressure boosting water injection device further comprises a gas injection water supplement device, the gas injection water supplement device is used for injecting gas into the pulse pressure boosting energy storage water tank (6) and supplementing water, the gas injection water supplement device comprises a drilling fluid storage tank and a pump (8), the drilling fluid storage tank is communicated with the pulse pressure boosting energy storage water tank (6) through a gas supplement pipeline, the gas supplement pipeline is provided with the pump (8), and the water outlet end of the pulse pressure boosting energy storage water tank (6) is connected with the gas storage tank through a pressure relief emptying pipeline.
3. The gas explosion inertial siphon negative pressure drilling system according to claim 2, characterized in that a first electrically controlled valve (9), a second electrically controlled valve (10) and a third electrically controlled valve (11) are arranged on the gas injection pipeline in sequence;
a fourth electric control valve (12) and a fifth electric control valve (13) are sequentially arranged on the water injection pipeline;
the water injection pipeline is connected with the gas injection pipeline in parallel, and the fourth electric control valve (12), the pulse pressurization energy storage water tank (6) and the fifth electric control valve (13) are positioned between the first electric control valve (9) and the third electric control valve (11) and are connected with the second electric control valve (10) in parallel;
a sixth electric control valve (14) is arranged on the air supplementing pipeline, and a seventh electric control valve (15) is arranged on the pressure relief emptying pipeline;
an eighth electric control valve (16) is arranged on the return pipeline;
a pressure sensor (17), a gas flow sensor (18) and a drill rod pressure sensor (19) are also arranged on the gas injection pipeline;
and a sleeve pressure sensor (20) is also arranged on the return pipeline.
4. The gas explosion inertial siphon negative pressure drilling system according to claim 1, characterized in that the water outlet end of the pulse pressurizing energy storage water tank (6) is further provided with a drilling fluid emptying line, and the drilling fluid emptying line is provided with a ninth electrically controlled valve (21).
5. The gas explosion inertial siphon negative pressure drilling system according to claim 2, characterized in that safety modules (22) are provided on the drilling fluid storage tank, the gas storage tank and the return recovery device.
6. A gas explosion inertial siphon negative pressure drilling system according to claim 1, characterized in that the drilling device further comprises a drilling platform (23) and a blowout preventer (24), the wellbore (7) being mounted below the drilling platform (23), the drill pipe (1) extending from above the drilling platform (23) down into the wellbore (7), the blowout preventer (24) being mounted at a top position of the wellbore (7) for sealing the wellbore (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120756038.7U CN215369761U (en) | 2021-04-13 | 2021-04-13 | Gas explosion inertial siphon negative pressure drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120756038.7U CN215369761U (en) | 2021-04-13 | 2021-04-13 | Gas explosion inertial siphon negative pressure drilling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369761U true CN215369761U (en) | 2021-12-31 |
Family
ID=79626740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120756038.7U Active CN215369761U (en) | 2021-04-13 | 2021-04-13 | Gas explosion inertial siphon negative pressure drilling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216883A (en) * | 2021-04-13 | 2021-08-06 | 上海万维亿通装备制造有限公司 | Gas explosion inertial siphon negative pressure drilling system and process |
-
2021
- 2021-04-13 CN CN202120756038.7U patent/CN215369761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216883A (en) * | 2021-04-13 | 2021-08-06 | 上海万维亿通装备制造有限公司 | Gas explosion inertial siphon negative pressure drilling system and process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106285617B (en) | Gas water horizontal well completion method | |
| CN108756828A (en) | Hydrate solid state fluidizing recovery method and system under the conditions of underbalance reacting cycle | |
| CN104533288B (en) | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled the method that well is with increasing production | |
| CN104533287B (en) | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled well and stimulation system | |
| CN106382097B (en) | A kind of drilling rig and method using liquid nitrogen injection efficient rock-breaking | |
| CN107816340B (en) | Process method for thermally extracting shale gas by combining high-power ultrasonic waves with branch horizontal well | |
| US20150125210A1 (en) | Excavated underground caverns for fluid storage | |
| US20160069170A1 (en) | Method and process for extracting shale oil and gas by fracturing and chemical retorting in oil shale in-situ vertical well | |
| CN103306643B (en) | A kind of water drainage gas production device and method | |
| CN108798608B (en) | Natural gas hydrate exploitation system and method | |
| CN101440704B (en) | Ground-dipping ore bed continuous high-energy gas fracturing seepage increasing method and specific high-energy gas generator | |
| CN106837295A (en) | Intelligent safe and efficient automatic drilling control system and control method | |
| CN104563974B (en) | Hydrate device is exploited in a kind of supercritical carbon dioxide jet jet drilling | |
| CN110644963B (en) | Method for exploiting hydrate based on multilateral well | |
| WO2020030043A1 (en) | High-pressure air ramming device for oil well, and method | |
| CN215369761U (en) | Gas explosion inertial siphon negative pressure drilling system | |
| CN110195580A (en) | A kind of gas-liquid two-phase synergy coal seam anti-reflection method | |
| WO2016078627A1 (en) | Production enhancement system using robot drill for drilling multi-branched fishbone and radial microholes in shale gas reservoir, and method therefor | |
| CN113216883A (en) | Gas explosion inertial siphon negative pressure drilling system and process | |
| US3744579A (en) | Erosion well drilling method and apparatus | |
| CN208763630U (en) | A kind of exploitation of gas hydrates system | |
| RU2382879C1 (en) | Underground gasification method | |
| CN204436341U (en) | A kind of supercritical carbon dioxide jet jet drilling production of water compound device | |
| CN215369805U (en) | Combustible ice mining system | |
| CN215718662U (en) | Intelligent environment-friendly circulating energy oil and gas production system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |