CN104358545A - Method and device for discharging sand and pulverized coal and producing gas - Google Patents
Method and device for discharging sand and pulverized coal and producing gas Download PDFInfo
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- CN104358545A CN104358545A CN201410602055.XA CN201410602055A CN104358545A CN 104358545 A CN104358545 A CN 104358545A CN 201410602055 A CN201410602055 A CN 201410602055A CN 104358545 A CN104358545 A CN 104358545A
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- coal dust
- liquid pipe
- jet pump
- hydraulic jet
- sediment outflow
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/124—Adaptation of jet-pump systems
Abstract
The invention relates to a method and a device for discharging sand and pulverized coal and producing gas. In the device for discharging sand and pulverized coal and producing gas, a pulverized coal, stratum sand and power fluid mixed runner is formed through a hydraulic jet pump, a tail pipe and a fluid return pipe, and a power fluid channel is formed by a ground power station, an underground power fluid pipe and the hydraulic jet pump. Power fluid containing pulverized coal and stratum sand is discharged out by the device for discharging sand and pulverized coal and producing gas through an independent channel, pump blockage caused by pulverized coal and stratum sand blockage is avoided, and the pipe eccentric wear problem is avoided. Mixed fluid formed by the mixing of stratum fluid containing pulverized coal and stratum sand and the power fluid is drained to the ground by the method for discharging sand and pulverized coal and producing gas through the pulverized coal, stratum sand and power fluid mixed runner. Pulverized coal and stratum sand in a coal bed are discharged out by a simple structural device through simple operation. The work efficiency of the device for discharging sand and pulverized coal and producing gas is improved, the failure rate of equipment is reduced, and the pump inspection and well repair period is prolonged.
Description
Technical field
The present invention relates to mechanical transfer field, be specifically related to method and the device thereof of the gas production of a kind of sediment outflow row coal dust.
Background technology
Coal bed gas is a kind of accompaniment of coal in generative process, is the clean new forms of energy of high-quality that value is very high.Along with the development of society, owing to also increasingly paying attention to developing the problem of environmental pollution that causes of the energy, therefore coal bed gas have also been obtained people and more and more pays close attention to and demand; In China, coal bed gas has been included into the important carrier promoting production of energy and consumption revolution.
Particularity due to coal seam reservoirs determines one of core missions of coal bed gas well mining operation for coal dust management, and China's coal-bed gas exploitation is in the junior stage at present, the major way of mining is voltage stabilizing mining, machine is taken out is main, and mining equipment is mainly transplants conventional rod pumping system.Owing to being mainly transplanting oil production equipment, in the application of coal bed gas well mining scene, there is also many unconformable problems; Such as, sucker rod pump can discharge a small amount of coal dust in early stage in mining, but under stable yields and the low discharge capacity condition in later stage, but effectively cannot discharge coal dust.And pulverized coal reburning to exceed standard be the main cause causing holddown to be shut down, the coal dust in pit shaft causes holddown, and then needs workover treatment, had a strong impact on the continuous seepage of coal bed gas well.Due to the effect of pressure, the reservoir sand in coal seam and coal dust are easy to enter extraction pump intake, cause the fault rate, the shortening well workover cycle that increase extraction pump, dynamically have a negative impact, add mining cost to gas well liquid loading.Chinese utility model patent application CN2014200756781 discloses the anti-coal dust pump of a kind of coal bed gas well, its structure be inlet valve, plunger, connection, tap from top to bottom successively connection, top connection, urceolus, tap, lower contact connect successively from top to bottom, form heavy powder annular space between urceolus and pump barrel.This coal bed gas well anti-coal dust pump utilizes heavy powder annular space to be communicated with the inside of lower contact by the heavy powder passage on tap, makes coal dust sink in the tail pipe under lower contact by this passage, is deposited on blow off valve and plunger to avoid coal dust.This utility model patent is discharged to realize coal dust, add multiple structure and joint, add motion wearing and tearing between each parts, and coal dust is deposited in tail pipe, also needs to propose when lower subjob to remove, and adds working programme in pump.And it has still utilized bar apparatus, the problem of side-abrasion of rod string can be there is.
Summary of the invention
The present invention needs the problem of prior art solved to be: prior art can not utilize simple constructional device to discharge coal dust in coal seam and reservoir sand by operating easily, and avoiding increases equipment failure rate because of holddown and side-abrasion of rod string, shortens the well workover cycle.
Specifically, the present invention proposes following technical scheme.
The invention provides a kind of sediment outflow row coal dust gas producing device, comprise ground installation, linkage and downhole hardware, described ground installation, linkage, downhole hardware connect in turn; It is characterized in that: described linkage comprises well dynamic liquid pipe and returns liquid pipe, and described downhole hardware comprises hydraulic jet pump; The lower end of described well dynamic liquid pipe is all communicated with the upper end of described hydraulic jet pump with the described lower end returning liquid pipe, and the upper end of described well dynamic liquid pipe is communicated with described ground installation.
Preferably, described downhole hardware comprises tail pipe, and the upper end of described tail pipe is communicated with described hydraulic jet pump lower end.
Preferably, described well dynamic liquid pipe and return the upper end that liquid pipe is disposed in parallel in described hydraulic jet pump.
Preferably, described well dynamic liquid pipe with return liquid pipe inside and outside or outer in be set on the upper end of described hydraulic jet pump mutually.
Preferably, described ground installation comprises Surface power drive station and wellhead assembly, and the upper end of described well dynamic liquid pipe is communicated with described Surface power drive station by wellhead assembly.
Preferably, described sediment outflow row coal dust gas producing device comprises air collecting pipe, and the lower end of described air collecting pipe extends in pit shaft, upper port is above the ground level.
Preferably, described sediment outflow row coal dust gas producing device comprises confining bed, and described confining bed is arranged between described hydraulic jet pump and described tail pipe.
The present invention also provides a kind of method using sediment outflow of the present invention row coal dust gas producing device to carry out the gas production of sediment outflow row coal dust, comprises the steps,
(1) the well dynamic liquid pipe that in pit shaft, upper end is communicated with ground installation, is delivered to the power fluid in described ground installation in the hydraulic jet pump of the downhole hardware be communicated with described well dynamic liquid pipe lower end, promotes described hydraulic jet pump work;
(2) coal dust in coal seam and reservoir sand suck in described downhole hardware by described hydraulic jet pump, make described coal dust and described reservoir sand be mixed in described power fluid completely;
(3) described hydraulic jet pump produces pressure, by the liquid pipe that returns of the described linkage be communicated with described hydraulic jet pump, the described power fluid being mixed into described coal dust and described reservoir sand is delivered to ground.
Preferably, described in described sediment outflow row coal dust gas producing device, ground installation comprises Surface power drive station and wellhead assembly, and the upper end of described well dynamic liquid pipe is communicated with described Surface power drive station by wellhead assembly; The Surface power drive station of described ground installation produces power fluid, and described power fluid is delivered in described hydraulic jet pump by the described well dynamic liquid pipe be communicated with it by described Surface power drive station; Described ground installation controls described Surface power drive station by its wellhead assembly and is communicated with described linkage.
Preferably, described sediment outflow row coal dust gas producing device comprises air collecting pipe, and the lower end of described air collecting pipe extends in pit shaft, upper port is above the ground level;
Comprise step (5), coal bed gas is transported to ground by the air collecting pipe stretched in pit shaft.
Sediment outflow row coal dust gas producing device of the present invention comprises described ground installation, described linkage and described downhole hardware.The described power fluid that described Surface power drive station produces by described ground installation is delivered in the described hydraulic jet pump in described downhole hardware by the described well dynamic liquid pipe of described linkage, promote described hydraulic jet pump work, kinetic transformation is become pressure, realize coal dust and reservoir sand to drain into ground.
In sediment outflow row coal dust gas producing device of the present invention, the described tail pipe upper end of described downhole hardware is communicated with described hydraulic planger pump lower end, under described tail pipe lower end is placed in coal seam, conveniently receives the described coal dust in described coal seam and described reservoir sand.Described tail pipe, described hydraulic jet pump and the described liquid pipe that returns form a coal dust, reservoir sand, power fluid mixing runner.
In sediment outflow of the present invention row coal dust gas producing device, the described well dynamic liquid pipe of described linkage and describedly return the upper end that liquid pipe can be disposed in parallel in described hydraulic jet pump; Also described well dynamic liquid pipe box can be returned liquid tube outside described and be arranged on the upper end of described hydraulic jet pump, described power fluid is made to return liquid pipe flows outside described, or return liquid pipe box in described well dynamic liquid tube outside be arranged on the upper end of described hydraulic jet pump by described, make the mixed liquor containing coal dust, reservoir sand and power fluid in described well dynamic liquid pipe flows outside.
In sediment outflow row coal dust gas producing device of the present invention, whether described ground installation controls described Surface power drive station by described wellhead assembly and is communicated with the described well dynamic liquid pipe of described linkage.
The method of sediment outflow row coal dust of the present invention gas production, the described hydraulic jet pump utilizing sediment outflow to arrange the described downhole hardware of coal dust gas producing device produces pressure and puts on coal dust in coal seam and reservoir sand, and by by described tail pipe, described hydraulic jet pump with describedly return the runner that liquid pipe formed coal dust and reservoir sand are upwards drawn to ground.
Sediment outflow row coal dust gas producing device of the present invention forms coal dust, reservoir sand, power fluid mixing runner by returning liquid pipe described in the described hydraulic jet pump of described downhole hardware, described tail pipe and described linkage, and the described well dynamic liquid pipe of the described Surface power drive station of described ground installation, described linkage and institute's hydraulic jet pump of described downhole hardware form power fluid passage.Power fluid containing coal dust, reservoir sand is discharged by independent passage by described sediment outflow row coal dust gas producing device, avoids because coal dust, reservoir sand cause holddown and there is not side-abrasion of rod string problem.The method of sediment outflow row coal dust of the present invention gas production utilizes described coal dust, reservoir sand, the mixed liquor that the formation fluid and power fluid that include coal dust and reservoir sand are mixed to form is drained into ground by power fluid mixing runner.The present invention utilizes simple constructional device to discharge coal dust in coal seam and reservoir sand by operating easily, improve the operating efficiency of described sediment outflow row coal dust gas producing device, the fault rate reducing equipment, prolongation inspection pump well workover cycle, and it can be widely used in sediment outflow, row's coal dust gas production operation of the multiple mines such as horizontal well, inclined shaft, directional well, cluster well.
Below in conjunction with accompanying drawing and each detailed description of the invention, the present invention and Advantageous Effects thereof are described in detail, wherein:
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the hydraulic jet pump internal work schematic diagram of embodiment 1.
In figure, description of reference numerals is as follows: 1-well dynamic liquid pipe, 2-return liquid pipe, 3-air collecting pipe, 4-hydraulic jet pump, 5-tail pipe, 6-wellhead assembly, 7-coal seam, 8-artificial bottom of a well, 9-power fluid, 10-formation fluid, 11-mixed liquor, 12-nozzle, 13-trunnion, 14-anemostat.
Detailed description of the invention
As mentioned above, the object of the invention is to: a kind of method providing sediment outflow to arrange coal dust gas production and device thereof, simple constructional device is by operating coal dust and the reservoir sand of discharging in coal seam easily, avoiding because coal dust, reservoir sand cause gas recovery facility holddown, increase fault rate, shorten the inspection pump well workover cycle, and eliminate side-abrasion of rod string problem.
Embodiment 1
With reference to shown in Fig. 1, the first sediment outflow row coal dust gas producing device provided by the invention, comprise ground installation (not shown), linkage and downhole hardware and air collecting pipe 3, described ground installation, linkage, downhole hardware connect in turn.Described ground installation comprises Surface power drive station and wellhead assembly 6, and described linkage comprises well dynamic liquid pipe 1 and returns liquid pipe 2, and described downhole hardware comprises hydraulic jet pump 4 and tail pipe 5.The upper end of described well dynamic liquid pipe 1 is communicated with described Surface power drive station, the lower end of described well dynamic liquid pipe 1 is all communicated with the upper end of described hydraulic jet pump 4 with the described lower end returning liquid pipe 2, the upper end of described tail pipe 5 is communicated with the lower end of described hydraulic planger pump 4, lower end be placed in coal seam 7 times, on artificial bottom of a well 8; The lower end of described air collecting pipe 3 extends in pit shaft, upper port is above the ground level.Described well dynamic liquid pipe 1 and return the upper end that liquid pipe 2 is disposed in parallel in described hydraulic jet pump.Described wellhead assembly 6 is the wellhead assembly 6 of band runner.
With reference to shown in Fig. 1, when utilizing the method water pumping gas production of sediment outflow row coal dust gas production of embodiment 1, described ground installation is produced power fluid 9 by described Surface power drive station and to be sent into by described power fluid 9 by the wellhead assembly 6 of described band runner in the described well dynamic liquid pipe 1 in pit shaft, and then described power fluid 9 is delivered to the described hydraulic jet pump 4 being arranged in artificial bottom of a well 8 be communicated with described well dynamic liquid pipe 1; Described power fluid 9 promotes described hydraulic jet pump 4 and starts working.The operation element of described hydraulic jet pump 4 comprises nozzle 12, trunnion 13 and anemostat 14, and wherein, nozzle 12 is equivalent to the motor of described hydraulic jet pump 4; The effect of trunnion 13 is mixed power fluid 9 and the formation fluid 10 including coal dust and reservoir sand, realizes energy exchange; Anemostat 14 is energy converters kinetic energy being changed into pressure.Described hydraulic jet pump 4 changes the high pressure potential energy of power fluid 9 into high speed kinetic energy by described nozzle 12, in described trunnion 13, described power fluid 9 and described formation fluid 10 mix and produce mixed liquor 11 and carry out momentum-exchange, are static pressure by described anemostat 14 by kinetic energy.Described hydraulic jet pump 4 is produced pressure and puts on coal dust under coal seam 7 and reservoir sand, the described coal dust of control and described reservoir sand and be inhaled into by the described tail pipe 5 that described hydraulic jet pump connects for 4 times and return liquid pipe 2 described in passing through and be delivered on ground, to realize sediment outflow and row's coal dust object of sediment outflow row coal dust gas producing device.At described hydraulic jet pump 4 while sediment outflow and row's coal dust, because the effect of pressure in coal seam, coal bed gas are transported to ground by the air collecting pipe 3 stretched in pit shaft.
Embodiment 2
The second sediment outflow row coal dust gas producing device provided by the invention, comprises ground installation, linkage and downhole hardware and confining bed.Described ground installation, linkage, downhole hardware connect in turn.Described ground installation comprises Surface power drive station and wellhead assembly 6, and described linkage comprises well dynamic liquid pipe 1 and returns liquid pipe 2, and described downhole hardware comprises hydraulic jet pump 4 and tail pipe 5.The upper end of described well dynamic liquid pipe 1 is communicated with described Surface power drive station, return outside liquid the pipe 2 and lower end of described well dynamic liquid pipe 1 described in described well dynamic liquid pipe 1 is enclosed within all to be communicated with the upper end of described hydraulic jet pump 4 with the described lower end returning liquid pipe 2, the upper end of described tail pipe 5 is communicated with the lower end of described hydraulic planger pump 4, lower end be placed in coal seam 7 times, on artificial bottom of a well 8.Described confining bed is arranged between described hydraulic jet pump 4 and described tail pipe 5.Described wellhead assembly 6 is the wellhead assembly 6 of band runner.
When utilizing the method water pumping gas production of sediment outflow row coal dust gas production of embodiment 2, described ground installation is produced power fluid 9 by described Surface power drive station and to be sent into by described power fluid 9 by the wellhead assembly 6 of described band runner in the described well dynamic liquid pipe 1 in pit shaft, and then described power fluid 9 is delivered to the described hydraulic jet pump 4 being arranged in artificial bottom of a well 8 be communicated with described well dynamic liquid pipe 1; Described power fluid 9 promotes described hydraulic jet pump 4 and starts working.The operation element of described hydraulic jet pump 4 comprises nozzle 12, trunnion 13 and anemostat 14, and wherein, nozzle 12 is equivalent to the motor of described hydraulic jet pump 4; The effect of trunnion 13 is mixed power fluid 9 and the formation fluid 10 including coal dust and reservoir sand, realizes energy exchange; Anemostat 14 is energy converters kinetic energy being changed into pressure.Described hydraulic jet pump 4 changes the high pressure potential energy of power fluid 9 into high speed kinetic energy by described nozzle 12, in described trunnion 13, described power fluid 9 and described formation fluid 10 mix and produce mixed liquor 11 and carry out momentum-exchange, are static pressure by described anemostat 14 by kinetic energy.Described hydraulic jet pump 4 is produced pressure and puts on coal dust under coal seam 7 and reservoir sand, the described coal dust of control and described reservoir sand and be inhaled into by the described tail pipe 5 that described hydraulic jet pump connects for 4 times and return liquid pipe 2 described in passing through and be delivered on ground, to realize sediment outflow and row's coal dust object of sediment outflow row coal dust gas producing device.Return outside liquid pipe 2 described in described well dynamic liquid pipe 1 is enclosed within, make described power fluid 9 described to return outside liquid pipe 2 and inside described well dynamic liquid pipe 1 between flowing.Be arranged on described confining bed between described hydraulic jet pump 4 and described tail pipe 5 in described pit shaft coal dust and reservoir sand and coal bed gas are completely cut off, at described hydraulic jet pump 4 while sediment outflow and row's coal dust, coal bed gas is made can directly to rise to ground by the effect of pressure in coal seam collected.
When the method for sediment outflow row coal dust gas production and the device water pumping gas production thereof that utilize embodiment 2, except being transferred coal bed gas by described air collecting pipe 3, its function, operation are all identical with embodiment 1.
Embodiment 3
The third sediment outflow row coal dust gas producing device provided by the invention, comprise ground installation, linkage and downhole hardware and air collecting pipe 3, described ground installation, linkage, downhole hardware connect in turn.Described ground installation comprises Surface power drive station and wellhead assembly 6, and described linkage comprises well dynamic liquid pipe 1 and returns liquid pipe 2, and described downhole hardware comprises hydraulic jet pump 4.The upper end of described well dynamic liquid pipe 1 is communicated with described Surface power drive station, described in return that liquid pipe 2 is enclosed within outside described well dynamic liquid pipe 1, the lower end of described well dynamic liquid pipe 1 is all communicated with the upper end of described hydraulic jet pump 4 with the described lower end returning liquid pipe 2.The lower end of described air collecting pipe 3 extends in pit shaft, upper port is above the ground level.
When utilizing the method water pumping gas production of sediment outflow row coal dust gas production of embodiment 3, described ground installation is produced power fluid 9 by described Surface power drive station and to be sent into by described power fluid 9 by described wellhead assembly 6 in the described well dynamic liquid pipe 1 in pit shaft, and then described power fluid 9 is delivered to the described hydraulic jet pump 4 being arranged in artificial bottom of a well 8 be communicated with described well dynamic liquid pipe 1; Described power fluid 9 promotes described hydraulic jet pump 4 and starts working.The operation element of described hydraulic jet pump 4 comprises nozzle 12, trunnion 13 and anemostat 14, and wherein, nozzle 12 is equivalent to the motor of described hydraulic jet pump 4; The effect of trunnion 13 is mixed power fluid 9 and the formation fluid 10 including coal dust and reservoir sand, realizes energy exchange; Anemostat 14 is energy converters kinetic energy being changed into pressure.Described hydraulic jet pump 4 changes the high pressure potential energy of power fluid 9 into high speed kinetic energy by described nozzle 12, in described trunnion 13, described power fluid 9 and described formation fluid 10 mix and produce mixed liquor 11 and carry out momentum-exchange, are static pressure by described anemostat 14 by kinetic energy.Described hydraulic jet pump 4 is produced pressure and puts on coal dust under coal seam 7 and reservoir sand, the described coal dust of control and described reservoir sand and be inhaled into by described hydraulic jet pump 4 and return liquid pipe 2 described in passing through and be delivered on ground, to realize sediment outflow and row's coal dust object of sediment outflow row coal dust gas producing device.The described liquid pipe 2 that returns is enclosed within outside described well dynamic liquid pipe 1, make the mixed liquor 11 containing coal dust, reservoir sand and power fluid 9 outside described well dynamic liquid pipe 1 and described return inside liquid pipe 2 between flowing.At described hydraulic jet pump 4 while sediment outflow and row's coal dust, because the effect of pressure in coal seam, coal bed gas are transported to ground by the air collecting pipe 3 stretched in pit shaft.
When the method for sediment outflow row coal dust gas production and the device water pumping gas production thereof that utilize embodiment 3, its function, operation are all identical with embodiment 1.
Embodiment 4
4th kind of sediment outflow row coal dust gas producing device provided by the invention, comprises ground installation, linkage and downhole hardware and confining bed.Described ground installation, linkage, downhole hardware connect in turn.Described ground installation comprises Surface power drive station and wellhead assembly 6, and described linkage comprises well dynamic liquid pipe 1 and returns liquid pipe 2, and described downhole hardware comprises hydraulic jet pump 4.The upper end of described well dynamic liquid pipe 1 is communicated with described Surface power drive station, returns outside liquid the pipe 2 and lower end of described well dynamic liquid pipe 1 and be all communicated with the upper end of described hydraulic jet pump 4 with the described lower end returning liquid pipe 2 described in described well dynamic liquid pipe 1 is enclosed within.Described well dynamic liquid pipe 1 and return the upper end that liquid pipe 2 is disposed in parallel in described hydraulic jet pump.Described confining bed is arranged on described hydraulic jet pump 4 times.
When utilizing the method water pumping gas production of sediment outflow row coal dust gas production of embodiment 4, described ground installation is produced power fluid 9 by described Surface power drive station and to be sent into by described power fluid 9 by described wellhead assembly 6 in the described well dynamic liquid pipe 1 in pit shaft, and then described power fluid 9 is delivered to the described hydraulic jet pump 4 being arranged in artificial bottom of a well 8 be communicated with described well dynamic liquid pipe 1; Described power fluid 9 promotes described hydraulic jet pump 4 and starts working.The operation element of described hydraulic jet pump 4 comprises nozzle 12, trunnion 13 and anemostat 14, and wherein, nozzle 12 is equivalent to the motor of described hydraulic jet pump 4; The effect of trunnion 13 is mixed power fluid 9 and the formation fluid 10 including coal dust and reservoir sand, realizes energy exchange; Anemostat 14 is energy converters kinetic energy being changed into pressure.Described hydraulic jet pump 4 changes the high pressure potential energy of power fluid 9 into high speed kinetic energy by described nozzle 12, in described trunnion 13, described power fluid 9 and described formation fluid 10 mix and produce mixed liquor 11 and carry out momentum-exchange, are static pressure by described anemostat 14 by kinetic energy.Described hydraulic jet pump 4 is produced pressure and puts on coal dust under coal seam 7 and reservoir sand, the described coal dust of control and described reservoir sand and be inhaled into by described hydraulic jet pump 4 and return liquid pipe 2 described in passing through and be delivered on ground, to realize sediment outflow and row's coal dust object of sediment outflow row coal dust gas producing device.Be arranged on described confining bed under described hydraulic jet pump 4 in described pit shaft coal dust and reservoir sand and coal bed gas are completely cut off, at described hydraulic jet pump 4 while sediment outflow and row's coal dust, coal bed gas is made can directly to rise to ground by the effect of pressure in coal seam collected.
When the method for sediment outflow row coal dust gas production and the device water pumping gas production thereof that utilize embodiment 4, except being transferred coal bed gas by described air collecting pipe 3, its function, operation are all identical with embodiment 1.
Embodiment 5
5th kind of sediment outflow row coal dust gas producing device provided by the invention, comprise ground installation, linkage and downhole hardware and confining bed, described ground installation, linkage, downhole hardware connect in turn.Described ground installation comprises Surface power drive station and wellhead assembly 6, and described linkage comprises well dynamic liquid pipe 1 and returns liquid pipe 2, and described downhole hardware comprises hydraulic jet pump 4 and tail pipe 5.The upper end of described well dynamic liquid pipe 1 is communicated with described Surface power drive station, the lower end of described well dynamic liquid pipe 1 is all communicated with the upper end of described hydraulic jet pump 4 with the described lower end returning liquid pipe 2, the upper end of described tail pipe 5 is communicated with the lower end of described hydraulic planger pump 4, lower end be placed in coal seam 7 times, on artificial bottom of a well 8.Described well dynamic liquid pipe 1 and return the upper end that liquid pipe 2 is disposed in parallel in described hydraulic jet pump.Described confining bed is arranged between described hydraulic jet pump 4 and described tail pipe 5.Described wellhead assembly 6 is the wellhead assembly 6 of band runner.
When utilizing the method water pumping gas production of sediment outflow row coal dust gas production of embodiment 5, described ground installation is produced power fluid 9 by described Surface power drive station and to be sent into by described power fluid 9 by the wellhead assembly 6 of described band runner in the described well dynamic liquid pipe 1 in pit shaft, and then described power fluid 9 is delivered to the described hydraulic jet pump 4 being arranged in artificial bottom of a well 8 be communicated with described well dynamic liquid pipe 1; Described power fluid 9 promotes described hydraulic jet pump 4 and starts working.The operation element of described hydraulic jet pump 4 comprises nozzle 12, trunnion 13 and anemostat 14, and wherein, nozzle 12 is equivalent to the motor of described hydraulic jet pump 4; The effect of trunnion 13 is mixed power fluid 9 and the formation fluid 10 including coal dust and reservoir sand, realizes energy exchange; Anemostat 14 is energy converters kinetic energy being changed into pressure.Described hydraulic jet pump 4 changes the high pressure potential energy of power fluid 9 into high speed kinetic energy by described nozzle 12, in described trunnion 13, described power fluid 9 and described formation fluid 10 mix and produce mixed liquor 11 and carry out momentum-exchange, are static pressure by described anemostat 14 by kinetic energy.Described hydraulic jet pump 4 is produced pressure and puts on coal dust under coal seam 7 and reservoir sand, the described coal dust of control and described reservoir sand and be inhaled into by the described tail pipe 5 that described hydraulic jet pump connects for 4 times and return liquid pipe 2 described in passing through and be delivered on ground, to realize sediment outflow and row's coal dust object of sediment outflow row coal dust gas producing device.Be arranged on described confining bed between described hydraulic jet pump 4 and described tail pipe 5 in described pit shaft coal dust and reservoir sand and coal bed gas are completely cut off, at described hydraulic jet pump 4 while sediment outflow and row's coal dust, coal bed gas is made can directly to rise to ground by the effect of pressure in coal seam collected.
When the method for sediment outflow row coal dust gas production and the device water pumping gas production thereof that utilize embodiment 5, except being transferred coal bed gas by described air collecting pipe 3, its function, operation are all identical with embodiment 1.
Claims (10)
1. a sediment outflow row coal dust gas producing device, comprise ground installation, linkage and downhole hardware, described ground installation, linkage, downhole hardware connect in turn; It is characterized in that: described linkage comprises well dynamic liquid pipe (1) and returns liquid pipe (2), and described downhole hardware comprises hydraulic jet pump (4); The lower end of described well dynamic liquid pipe (1) is all communicated with the upper end of described hydraulic jet pump (4) with the described lower end returning liquid pipe (2), and the upper end of described well dynamic liquid pipe (1) is communicated with described ground installation.
2. sediment outflow row coal dust gas producing device according to claim 1, it is characterized in that: described downhole hardware comprises tail pipe (5), the upper end of described tail pipe (5) is communicated with described hydraulic jet pump (4) lower end.
3. sediment outflow according to claim 1 and 2 row coal dust gas producing device, is characterized in that: described well dynamic liquid pipe (1) and return the upper end that liquid pipe (2) is disposed in parallel in described hydraulic jet pump (4).
4. sediment outflow according to claim 1 and 2 row coal dust gas producing device, is characterized in that: described well dynamic liquid pipe (1) and return liquid pipe (2) inside and outside or outward in be set on the upper end of described hydraulic jet pump (4) mutually.
5. according to claim 1-4 arbitrary described sediment outflow row coal dust gas producing device, it is characterized in that: described ground installation comprises Surface power drive station and wellhead assembly (6), the upper end of described well dynamic liquid pipe (1) is communicated with described Surface power drive station by wellhead assembly (6).
6., according to claim 1-5 arbitrary described sediment outflow row coal dust gas producing device, it is characterized in that: comprise air collecting pipe (3), the lower end of described air collecting pipe (3) extends in pit shaft, upper port is above the ground level.
7., according to claim 1-6 arbitrary described sediment outflow row coal dust gas producing device, it is characterized in that: comprise confining bed (9), described confining bed is arranged between described hydraulic jet pump (4) and described tail pipe (5).
8. use the sediment outflow of claim 1 row coal dust gas producing device to carry out the method for sediment outflow row coal dust gas production, it is characterized in that: comprise the steps,
(1) the well dynamic liquid pipe (1) that in pit shaft, upper end is communicated with ground installation, power fluid in described ground installation is delivered in the hydraulic jet pump (4) of the downhole hardware be communicated with described well dynamic liquid pipe (1) lower end, promotes described hydraulic jet pump (4) work;
(2) coal dust of coal seam (7) and reservoir sand suck in described downhole hardware by described hydraulic jet pump (4), make described coal dust and described reservoir sand be mixed in described power fluid completely;
(3) described hydraulic jet pump (4) produces pressure, by the liquid pipe (2) that returns of the described linkage be communicated with described hydraulic jet pump (4), the described power fluid being mixed into described coal dust and described reservoir sand is delivered to ground.
9. the method for the sediment outflow row coal dust gas production according to claim 7 or 8, it is characterized in that: described in described sediment outflow row coal dust gas producing device, ground installation comprises Surface power drive station and wellhead assembly (6), and the upper end of described well dynamic liquid pipe (1) is communicated with described Surface power drive station by wellhead assembly (6); The Surface power drive station of described ground installation produces power fluid, and described power fluid is delivered in described hydraulic jet pump (4) by the described well dynamic liquid pipe (1) be communicated with it by described Surface power drive station; Described ground installation controls described Surface power drive station by its wellhead assembly (6) and is communicated with described linkage.
10. according to the method for claim 7-9 arbitrary described sediment outflow row coal dust gas production, it is characterized in that: described sediment outflow row coal dust gas producing device comprises air collecting pipe (3), and the lower end of described air collecting pipe (3) extends in pit shaft, upper port is above the ground level;
Comprise step (5), coal bed gas is transported to ground by the air collecting pipe (3) stretched in pit shaft.
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| CN201410602055.XA CN104358545A (en) | 2014-10-30 | 2014-10-30 | Method and device for discharging sand and pulverized coal and producing gas |
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| CN201410602055.XA CN104358545A (en) | 2014-10-30 | 2014-10-30 | Method and device for discharging sand and pulverized coal and producing gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106481281A (en) * | 2015-08-25 | 2017-03-08 | 中国石油天然气股份有限公司 | A kind of tubular column structure of coal bed gas well and coal bed gas well system |
| CN108240193A (en) * | 2016-12-23 | 2018-07-03 | 中国石油天然气股份有限公司 | A kind of coal bed gas horizontal well card-dispelling tubular pile and method |
| CN111927426A (en) * | 2020-09-04 | 2020-11-13 | 北京化工大学 | Sand removal process for underground local reverse circulation and multistage sand setting |
-
2014
- 2014-10-30 CN CN201410602055.XA patent/CN104358545A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481281A (en) * | 2015-08-25 | 2017-03-08 | 中国石油天然气股份有限公司 | A kind of tubular column structure of coal bed gas well and coal bed gas well system |
| CN108240193A (en) * | 2016-12-23 | 2018-07-03 | 中国石油天然气股份有限公司 | A kind of coal bed gas horizontal well card-dispelling tubular pile and method |
| CN108240193B (en) * | 2016-12-23 | 2021-01-29 | 中国石油天然气股份有限公司 | Coal bed gas horizontal well unfreezing tubular column and method |
| CN111927426A (en) * | 2020-09-04 | 2020-11-13 | 北京化工大学 | Sand removal process for underground local reverse circulation and multistage sand setting |
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