CN1112503C - Ultrasonic water draining method for recovering gas - Google Patents

Ultrasonic water draining method for recovering gas Download PDF

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Publication number
CN1112503C
CN1112503C CN 00120633 CN00120633A CN1112503C CN 1112503 C CN1112503 C CN 1112503C CN 00120633 CN00120633 CN 00120633 CN 00120633 A CN00120633 A CN 00120633A CN 1112503 C CN1112503 C CN 1112503C
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China
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transducer
gas
ultrasonic
energy
hydrops
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CN 00120633
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CN1305047A (en
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杜坚
杨兆中
周洁玲
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Southwest Petroleum University
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Southwest Petroleum University
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Abstract

The present invention relates to an ultrasonic water draining method for recovering gas. Electric power is supplied to an ultrasonic generator by a dynamic force power supply in the method, and electric power signals generated by the generator are transmitted to a downthehole ultrasonic transducer by a transmission cable. Electric energy is converted to ultrasonic energy for transmission by the transducer, so bottom hole accumulated liquid is atomized, and the atomized accumulated liquid discharges to the ground with natural airflow. The present invention overcomes the insufficiency of the water draining technology for recovering gas at present, and has no pollution to gas pools and no chemical corrosion to devices. The gas production quantity is obviously enhanced, and the periodic time of recovering the gas of a gas well is prolonged. The present invention is especially suitable for the water draining technology for recovering gas in a small bottom water natural gas well of a deep well.

Description

Utilize the method for ultrasonic wave water pumping gas production
The present invention relates to utilize the method for ultrasonic wave water pumping gas production, this method is particularly suitable for the later stage exploitation of the low pressure deep-well handle water natural gas well.
Natural gas is the fuel gas that goes out from exploitation of oil-gas field, in world's energy resource structure, occupy critical role, but along with some natural gas gas reservoirs enter the later stage mining phase, gas reservoir output is successively decreased comprehensively, and distinct issues are the general a small amount of formation water of output (1~2 meter of the end water yields of dark gas well (4000~4500 meters of well depths) 3/ day, 10~20 meters 3/ month), though the water yield is little, gas production there is bigger influence, after mainly showing as water and immersing gas well, oil pipe band water is ineffective, and water amasss in pit shaft and the aerogenesis microscopic checks around stopping up.For improving gas production, promoted the use of comparatively ripe various water drainage-gas recovery technology technological means, taken out water drainage-gas recovery technology, electric submersible pump water drainage-gas recovery technology, hydraulic jet pump water drainage-gas recovery technology, plunger lift water drainage-gas recovery technology, preferred tubing string water drainage-gas recovery technology, foaming water discharge gas producing technology etc. as conventional gaslift water drainage-gas recovery technology, semiclosed gaslift water drainage-gas recovery technology, machine.But because the day lifting rate of above-mentioned several water drainage-gas recovery technology technology is relatively large, this special gas well of low pressure deep-well handle water had certain use limitation, the water drainage-gas recovery technology that has at present simultaneously also has pollution, gas recovery facility is had the chemical attack effect gas reservoir, thereby causes result of use undesirable.Therefore be badly in need of exploring and studying new water pumping gas production mechanism and technology, and under this theoretical direction, study the water drainage-gas recovery technology technical equipment.
Mainly concentrate on the aspects such as de-plugging, reducing thick oil viscosity, wax removal, scale removal of oil well when at present ultrasonic technology is applied to the oil-gas mining field, still do not have the report that is applied to natural gas well water pumping gas production both at home and abroad.
Purpose of the present invention just is to provide a kind of method of utilizing the ultrasonic wave water pumping gas production, and it can overcome the deficiency of present water drainage-gas recovery technology, and is pollution-free to gas reservoir, gas recovery facility is not had chemical attack; And can significantly improve gas production, prolong the gas production cycle of gas well.
For achieving the above object, the present invention by the following technical solutions.
When ultrasonic wave is propagated in medium, because the interaction between sound wave and the medium makes medium that the variation of a series of physics and chemistry take place, ultrasonic effects such as a series of mechanics, optics, electricity, chemistry appear immediately also.The ultrasonic treatment technology that carries out in liquid, great majority are all relevant with cavitation.When having intensity to surpass the transonic of cavitation valve of this liquid in the liquid, can produce a large amount of bubbles in the liquid, minute bubbles will grow along with ultrasonic vibration and increase gradually, vanish suddenly again then and division, bubble after the division is grown continuously again and is vanished, and this phenomenon is referred to as cavitation.When cavitation takes place, when collapsing rapidly, the minute bubbles in the liquid in bubble, produced HTHP, and produced strong local shock near the liquid because the liquid at high speed around the bubble pours bubble bubble, formed local HTHP, thereby a series of effects such as ultrasonic cleaning, pulverizing, emulsification, dispersion, promotion chemical reaction have been produced, simultaneously also with strong cavitation noise and sonoluminescence.
Utilize the ultrasonic technique water pumping gas production, promptly utilize ultrasonic method to solve the blockage problem of natural gas deep-well handle water gas pay.Because ultrasonic effect to formation water, can change or quicken to change some physics of formation water, chemistry, biological nature or state, use suitable transducer can produce powerful ultrasonic wave, and by focusing on, methods such as amplification bar, also can obtain the ultrasonic of high sound intensity, add the cavitation phenomenon in the formation water, impel stratum ponding to gasify expeditiously in the shaft bottom (atomizing particle size is at 1~5 micron) and drain into ground along with producing air-flow, thereby improve oil pipe band outlet capacity, reach the ponding in reduction and the eliminating pit shaft, open aerogenesis microscopic checks, increase the purpose of gas production.
This method comprises following step: transfer ultrasonic transducer near the down-hole hydrops the aerogenesis stratum by sleeve pipe or oil pipe (1); (2) probe in the transducer detects various downhole parameters and passes to ground observing and controlling system by transmission cable, this system's control operation process; (3) electrical source of power on ground supply electric power is given supersonic generator; (4) supersonic generator produces frequency and the adjustable continuous or pulsed electrical power signal of intensity; (5) transmission cable reaches electrical power signal the ultrasonic transducer that is arranged near the down-hole hydrops aerogenesis stratum; (6) energy transducer in the transducer changes into the ultrasonic energy emission with electric energy, and the hydrops in the shaft bottom is atomized in a large number; (7) hydrops after the atomizing is along with natural gas flow is discharged ground.
Energy transducer in the transducer is converted into ultrasonic energy with electric energy, the sensor groups that downhole parameters probe in the transducer is made up of various sensor (as resistance-type, thermoelectric (al) type, piezoelectric type etc.), detect the multiple parameter in down-hole respectively, as temperature, pressure, liquid level etc., when the various parameters in the detected down-hole of sensor groups when coaxial cable reaches ground observing and controlling system, this system can adjust accordingly transducer and a whole set of working equipment according to testing result, to reach energy-efficient purpose.
In order to pass through oil pipe or sleeve pipe better, near being placed on gas pay along the through hole in oil pipe or the sleeve pipe, the ultrasonic transducer preferred design, be fabricated to elongated cylindrical, the position distribution of the energy transducer that it is inner also can have different designs as required with pointing to, with guarantee its ultrasonic jet flow direction respectively along the gas recovery well pit shaft axially, radially or with angle that radially becomes to determine etc., make the shaft bottom hydrops reach atomizing effect preferably.
The ground observing and controlling system of this method also can be designed to intelligent observing and controlling system, reaching the automation of water drainage-gas recovery technology technology, and makes the gas production process realize higher efficient.
The present invention is applicable to the eliminating of the shaft bottom hydrops of the natural gas well, and the water drainage-gas recovery technology of the deep-well handle water natural gas well particularly also can be used for the water drainage-gas recovery technology of the natural gas well of other types.
Compare with prior art, the present invention can solve the gas well underproduction and the stopping production problem that deep-well handle water causes well, has remarkable economic efficiency, be in particular in following some: (1) does not have any pollution to reservoir, and gas recovery facility is not had chemical attack; (2) lamination water atomization over the ground and oil-water and milk promotion shaft bottom discharge opeing be can finish simultaneously, and ultrasonic cleaning and de-plugging effect kept the shaft bottom is gentle; (3) only need ground supply electric power, job practices is simple, and compliance is strong; (4) electricity-sound-function conversion efficiency height, energy conservation and reduction gas production cost; (5) can improve single well productivity and effective prolongation gas well gas production cycle.
Fig. 1 is the method schematic diagram that the present invention utilizes the ultrasonic wave water pumping gas production
Fig. 2 is that the present invention utilizes transducer architecture schematic diagram in the method for ultrasonic wave water pumping gas production
Fig. 3 is that the present invention utilizes transducer transverse sectional view in the method for ultrasonic wave water pumping gas production
Further specify the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of method of utilizing the ultrasonic wave water pumping gas production, handle control cables winch 3 and pulley mechanism 4, ultrasonic transducer 8 can be transferred to from oil pipe 6 near the aerogenesis stratum 10 the down-hole hydrops 11 by wellhead assembly 5, or with ultrasonic transducer 8 with after oil pipe 6 connects, transfer near the aerogenesis stratum 10 down-hole hydrops 11 along sleeve pipe 12.Electrical source of power 1 provides electric power to high-power ultrasound generator 2, supersonic generator 2 produces frequency and the adjustable continuous or pulsed electrical power signal of intensity, transmission cable 7 reaches electrical power signal the ultrasonic transducer 8 that is arranged near aerogenesis stratum 10 down-hole hydrops 11, transducer 8 changes into the ultrasonic energy emission efficiently with electric energy, and the hydrops 11 in the shaft bottom 9 is atomized in a large number, the hydrops after the atomizing is along with natural gas flow is discharged ground.Transmission cable 7 will be arranged in ground by cable reel 3 and pulley gear 4 supersonic generator 2 couples together with the transducer 8 that is positioned near aerogenesis stratum 10 down-hole hydrops 11, and coaxial transmission cable 7 also plays a part to transmit ultrasonic transducer 8 under electrical power signal and the winding shaft.The TT﹠C system 13 on ground can be differentiated the situation of change of downhole parameters such as liquid level automatically according to the testing result of underground ultrasonic wave transducer 8, and the duty of transducer is adjusted, and reaches the purpose of efficient energy-saving.
Referring to Fig. 2, several ultrasonic transduction devices 14, downhole parameters probe 15 are arranged in the underground ultrasonic wave transducer 8, energy transducer 14 changes into the ultrasonic energy emission efficiently with electric energy, the sensor groups that probe 15 is made up of various sensor (as resistance-type, thermoelectric (al) type, piezoelectric type etc.), detect the multiple parameter in down-hole respectively, as temperature, pressure, liquid level etc., when the various parameters in probe 15 detected down-holes when coaxial cable 7 reaches ground observing and controlling system 13, this TT﹠C system 13 can adjust accordingly transducer 8 and a whole set of working equipment according to testing result.
Referring to Fig. 3, this ultrasonic transducer 8 is an elongated cylindrical, mainly is for the ease of by oil pipe 6 or sleeve pipe 12, and near being placed on aerogenesis stratum 10 along the through hole of oil pipe 6 or sleeve pipe 12.The position distribution of the energy transducer 14 of transducer 8 inside is carried out different designs as required with pointing to, make its ultrasonic jet flow direction respectively along the gas recovery well pit shaft axially, radially or with the angle that radially becomes to determine etc., with the atomizing effect that guarantees.

Claims (5)

1 one kinds of methods of utilizing the ultrasonic wave water pumping gas production comprise following step:
A transfers ultrasonic transducer (8) near the down-hole hydrops (11) aerogenesis stratum (10) by sleeve pipe (12) or oil pipe (6);
Downhole parameters probe (15) in the b transducer detects various downhole parameters and passes to ground observing and controlling system (13) by transmission cable, this system's control operation process;
The electrical source of power on c ground (1) supply electric power is given supersonic generator (2);
D supersonic generator (2) produces frequency and the adjustable continuous or pulsed electrical power signal of intensity;
E transmission cable (7) reaches electrical power signal the ultrasonic transducer (8) that is arranged near the down-hole hydrops (11) in aerogenesis stratum (10);
Energy transducer (14) in the f transducer (8) changes into the ultrasonic energy emission with electric energy, and makes a large amount of atomizings of hydrops (11) in the shaft bottom (9);
Hydrops after the g atomizing is along with natural gas flow is discharged ground.
2 the method for claim 1 is characterized in that, ultrasonic transducer (8) is an elongated cylindrical.
3 the method for claim 1 is characterized in that, the sensor groups that downhole parameters probe (15) is made up of resistance sensor, thermoelectric transducer or piezoelectric transducer among the step b.
4 the method for claim 1 is characterized in that, the ultrasonic jet flow direction that the energy transducer among the step f (14) sends respectively along the gas recovery well pit shaft axially, radially or with the angle that radially becomes to determine.
5 as claim 1,2,3 or 4 described methods, it is characterized in that ground observing and controlling system (13) is an intelligent observing and controlling system.
CN 00120633 2000-12-26 2000-12-26 Ultrasonic water draining method for recovering gas Expired - Fee Related CN1112503C (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1321257C (en) * 2004-05-19 2007-06-13 中国地质大学(武汉) Method and apparatus for producing thick oil based on sound, light and electricity combination function
US9587470B2 (en) 2013-03-15 2017-03-07 Chevron U.S.A. Inc. Acoustic artificial lift system for gas production well deliquification
CN109695437A (en) * 2018-12-27 2019-04-30 西南石油大学 A kind of gas well ultrasound suspending liquid discharging gas producing system and implementation method

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN1321257C (en) * 2004-05-19 2007-06-13 中国地质大学(武汉) Method and apparatus for producing thick oil based on sound, light and electricity combination function
US9587470B2 (en) 2013-03-15 2017-03-07 Chevron U.S.A. Inc. Acoustic artificial lift system for gas production well deliquification
CN109695437A (en) * 2018-12-27 2019-04-30 西南石油大学 A kind of gas well ultrasound suspending liquid discharging gas producing system and implementation method

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