CN206495664U - Hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit - Google Patents
Hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit Download PDFInfo
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- CN206495664U CN206495664U CN201621405021.2U CN201621405021U CN206495664U CN 206495664 U CN206495664 U CN 206495664U CN 201621405021 U CN201621405021 U CN 201621405021U CN 206495664 U CN206495664 U CN 206495664U
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Abstract
The utility model is related to hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit, the gas producing device includes the ground installation of sequential communication, attachment means and downhole device, the ground installation is provided with fluid inlet and the settling tank of fluid issuing, the surface duct that export and import is connected therewith respectively including can body and returns liquid pipe, and the air collecting pipe connected with following wellhead assemblies；The attachment means include wellhead assembly, the power liquid pipe for being placed on wellhead assembly and mixing liquid pipe；The downhole device includes the direct circulation contra-injection jet pump connected with power liquid pipe and mixing liquid pipe；Wherein, the Surface power drive liquid pipe road and return liquid pipe by wellhead assembly respectively with power liquid pipe and mixing liquid pipe connect；The mixed liquor pipe sleeve is in power fluid tube outside.The utility model is directed to the situation of the coal bed gas well of many wells of single platform at present, it is possible to achieve pump group is in parallel, shares power fluid pipeline, gas-liquid separation, settling tank, reduces cost, have broad application prospects.
Description
Technical field
The utility model is related to drilling well and Coal-seam Gas Recovery Technologies field, relates generally to coal bed gas collecting device field, tool
Body is related to hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit.
Background technology
Coal bed gas is a kind of accompaniment of the coal in generating process, is a kind of cleaning energy with the very high-quality of high value
Source, with the pay attention to day by day to environmental protection, the exploitation of coal bed gas obtains the concern of more people, in China, and coal bed gas, which has been included into, to be pushed away
The important carrier of energy source production and consumption revolution.
The exploitation of coal bed gas has had a very long time in China, the coal bed gas transplanted from the mode of oil exploitation
Mining type has the rule of development of itself.With technological accumulation and progress, coal bed gas well is gradually from straight well, inclined shaft to orientation
Well, the direction of horizontal well are developed.It is controlled by the demand of State owned land policy and cost simultaneously, individual well well site can not increasingly be met
It is required that, and platform-type many wells, the favor for receiving from formula well pattern industry.
, it is necessary to which water pumping gas production reduces bottom pressure, when pressure is reduced to the solution of coal bed gas in the recovery process of coal bed gas
When analysing pressure, coal bed gas enters pit shaft after separating out, and is then collected surface pipeline network.The particularity parsed due to coal bed gas, it is desirable to
Draining is reliable and stable.When reducing bottom pressure simultaneously, stratum water also can access wall bottom, coal dust and fracturing sand in coal seam can also flow
Enter shaft bottom.Coal dust and fracturing sand can cause to bury gas production tubing string, block gas production passage, it is therefore desirable to which coal dust and fracturing sand are discharged to
Ground, therefore one of core missions of coal bed gas well mining operation are coal dust management.Water pumping gas production equipment is mainly that transplanting is recovered the oil
Equipment, usually rod pumping system exists, and in coal bed gas well mining field application, sucker rod pump can be discharged in early stage mining
A small amount of coal dust, but under the conditions of stable yields and the low discharge capacity in later stage, can not but be effectively discharged out coal dust.And pulverized coal reburning is super
Mark is that the coal dust in the main cause for causing holddown to be shut down, pit shaft causes holddown, and then needs workover treatment, had a strong impact on coal
The continuous production of layer gas well.And the rise of high angle hole, directional well, horizontal well, and bring side-abrasion of rod string to sucker rod pumping system
The problem of, add production maintenance cost.
The exploitation of coal bed gas well needs continuously to carry out water pumping gas production management to coal bed gas well, results in the need for a large amount of personnel and carries out
Uninterrupted management, cost of labor more and more higher, therefore to remote control, automatically control, or even intelligent control proposes demand.
Conventional shaft bottom mining technology is sucker rod pump technology, drives bottom equipment to carry out draining by drive rod of pumping and adopts
Gas.Suitable for straight well.Being used present coal bed gas well from formula well, horizontal well, if using conventional sucker rod pump technology, in inclination section more
The eccentric wear of oil pumping drive rod and sleeve pipe will be caused, equipment need to be safeguarded often, therefore routine has bar mining equipment to be not particularly suited for
There is the coal bed gas well mining of inclination section.
Conventional mining equipment includes electric oil submerged screw pump and piston pump at present.
Electric oil submerged screw pump is a kind of ripe shaft bottom without bar mining equipment.It is by multistage submersible electric motor, screw rod
The critical pieces such as pump, reduction gearing are constituted, and displacement control is carried out by ground frequency converter, and work is carried out by motor drive screw pump
Make.Screw pump is mainly made up of stator and rotor, and stator is rubber sleeve steel pipe composition of the inside with screw type；Rotor is one
Root adapts to the metal screw of stator spiral.Seal cavity is formed between rotor, when rotor is selected under motor driving,
Spiral cavity from one end movement to the other end, will produce the effect of pump.The formation fluid sucked from shaft bottom will be with cavity
Spiral movement is discharged to pumping hole, and is transported to ground through oil pipe.The discharge capacity of electric oil submerged screw pump is up to 10-150m3/ D, lift
900-2200m, it is adaptable to which sand grains diameter is less than 0.1mm, formation fluid is less than 3% containing sand, and temperature is less than 150 DEG C of working environment.
Electric oil submerged screw pump is simple in construction, compared with sucker rod pump, and electric oil submerged screw pump can save 30%-60%, and
And mining continuous and stable, pulse free impact phenomenon, up to 90% high efficiency.It is applicable and safeguards simple, operating cost is low.
Piston pump is a kind of rodless pumping unit of utilization hydraulic drive, and high voltage power is provided by ground hydraulic station, through even
Connection device and oil pipe feeding shaft bottom piston pump, piston pump do reciprocating-piston motion, pumping formation liquid and Squeezing Ground liquid in shaft bottom
It is discharged to ground.It is divided into the closed cycle that the open circulation pump and power fluid that power fluid mixes with production fluid are not mixed with production fluid
Pump, hydraulic actuating fluid is generally oil base and water base two kinds, and fluid power can also be used and carries out pulling, piston commutation can commutate in shaft bottom,
It can be commutated in ground driving liquid.Piston has big energy-output ratio, the characteristics of production efficiency is high.
Utility model content
The utility model solve technical problem be：Mining equipment commonly used in the prior art still needs to improve, for example：For
Electric oil submerged screw pump, because the structure of screw pump is limited, when stratum, liquid temperature degree is higher, when formation fluid contains sand and higher coal dust,
The service life of screw pump stator rubber will be had a strong impact on.Electric oil submerged screw pump is not suitable for discharge capacity less than 10m simultaneously3/ D's
Situation, because discharge capacity is low, the stratum flow velocity of discharge is also low, is not enough to cool down motor, easily makes motor fault.Cause
This is not suitable for the later stage mining operation of coal bed gas well.For piston pump, because the formation fluid of coal bed gas well contains coal dust or pressure
The minor diameter solid particle such as sand is split, causes piston pump cylinder quick abrasion, internal leakage is big after work a period of time；Due to formation fluid
Containing free gas, gas lock is formed easily in piston causes work efficiency drop, and formation maintenance cost is high, the spy more than maintenance times
Property.Therefore piston pump need with further improving applied to the water pumping gas production of coal bed gas well.
The purpose of this utility model is to solve the problems, such as the automatic water drainage gas production after coal bed gas well completion.Current coal bed gas well is more
For high angle hole, directional well, horizontal well.Mining displacement at initial stage is generally 20m3/ D, daily liquid level reduction different according to well ore deposit
1m-5m, while displacement is gradually reduced, displacement reaches 1m after 1 year3/D.Liquid typically 1-2% containing coal dust, peak during mining
Section is coal dust content up to 8-9%.Liquid retrievable type, which automatically controls sediment outflow row's pulverized coal system, can meet the change of mining situation greatly
It is required that.The system equally has good effect to higher suspension, highly viscous liquid simultaneously.By adjusting ground high voltage power liquid
Output, conventional equipment can realize 1-70m3The regulation of/D discharge capacities.The situation of the coal bed gas well of many wells of single platform at present is directed to, can
To realize that pump group is in parallel, power fluid pipeline, gas-liquid separation, settling tank are shared, cost is reduced.Realized using flow-control equipment single
Well automatically controls mining.
In order to solve the above-mentioned technical problem, the utility model discloses a kind of hydraulic running and pulling formula sediment outflow row's coal dust gas production dress
Put, including ground installation, attachment means and downhole device.Ground installation provides the power fluid for meeting and requiring, controls individual well power
The demand of liquid, realizes the gas-liquid separation of rework solution, and solid phase precipitation gathers all kinds of parameters of production requirement.Attachment means are provided
The passage of Surface power drive liquid and downhole device, realizes the exchange of fluid power passage.Downhole device is draining aerogenesis apparatus, according to mining
Technique realizes the setting value decompression of the quantitative formation fluid of discharge or bottom pressure.
Specifically, in view of the shortcomings of the prior art, the utility model provides following technical scheme：
A kind of hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit, includes the ground installation of sequential communication, attachment means and well
Bottom device, it is characterised in that the ground installation includes settling tank 1, the difference that can body is provided with fluid inlet and fluid issuing
Fluid issuing is connected with fluid inlet therewith surface duct and return liquid pipe 12, and the gas production connected with following wellhead assemblies 11
Pipe 14；The attachment means include wellhead assembly 11, the power liquid pipe 16 hung in wellhead assembly 11 and mixing liquid pipe 15；Institute
State the direct circulation contra-injection jet pump 17 that downhole device includes connecting with power liquid pipe 16 and mixing liquid pipe 15；Wherein, institute
State surface duct and return liquid pipe 12 and connected respectively with power liquid pipe 16 and mixing liquid pipe 15 by wellhead assembly 11；The mixed liquor
Pipe 15 is enclosed on the outside of power liquid pipe 16 or is arranged side by side with power liquid pipe 16.
It is preferred that, in above-mentioned gas producing device, multistage septalium is provided with the settling tank 1, the fluid issuing is set
At the afterbody septalium that fluid is flowed through.
It is preferred that, in above-mentioned gas producing device, the direct circulation contra-injection jet pump 17 includes pump barrel 25 and pump core, institute
State and power fluid runner, formation fluid runner and mixed liquor runner are provided with pump core, the power fluid flow channel entry point and power liquid pipe
16 lower ends are connected, and the mixed liquor runner exit is connected with mixing liquid pipe 15 lower end；
Wherein, the power fluid runner is disposed with along power fluid flow direction：The starting connected with the power liquid pipe 16
Duan Liudao 511, along the pump barrel barrel set Drainage Section runner 514 and pressure chamber 515, the pressure chamber 515 with starting
Fluid flows to opposite one end and is provided with nozzle 29 in Duan Liudao 511.
It is preferred that, at the Drainage Section runner 514, pump barrel is cooperatively formed as a part for runner tube wall with pump core
Drainage Section runner 514.
It is preferred that, in above-mentioned gas producing device, the mixed liquor runner is disposed with trunnion 28, diffusion along fluid flow direction
Pipe 27 and outlet section mixed liquor runner, the trunnion 28 are connected with nozzle 29, fluid flow direction and the initial segment stream in the trunnion 28
Fluid flow direction is opposite in road 511；Fluid flow direction and the initial segment runner 511 of power fluid runner in the outlet section mixed liquor runner
Angle >=90 ° of middle fluid flow direction.
It is preferred that, in above-mentioned gas producing device, it is additionally provided with the pump core for connecting the initial segment runner 511 and drainage
Duan Liudao 514 undertaking section runner 513, the undertaking section runner is also communicated with tributary runner 512, the tributary runner 512 with
Power liquid pipe 16 is connected, and is in angle with the initial segment runner 511.
It is preferred that, in above-mentioned gas producing device, the formation fluid runner sets and connected with the trunnion 28, and formation fluid runner has
Spring is installed on replacement and fixation valve 30, the replacement and fixation valve 30.
It is preferred that, in above-mentioned gas producing device, the pump core of direct circulation contra-injection jet pump 17 is additionally provided with for isolating
The sealing 31 of power fluid runner, formation fluid runner and mixed liquor runner.
It is preferred that, in above-mentioned gas producing device, the downhole device also including the tail pipe 18 with formation fluid flow passage and is put
Suction line 19 in the inner chamber of tail pipe 18, the tail pipe 18 is provided with screen casing in one end of connection formation fluid runner.
It is preferred that, in above-mentioned gas producing device, the surface duct includes low pressure pipeline 2, the height being sequentially connected with settling tank 1
Press pump 4 and pressure piping 6；Wherein, the pressure of the low pressure pipeline is less than or equal to 1.6MPa；The pressure model of the pressure piping
Enclose for more than 1.6MPa；
The ground installation also includes the device for automatically regulating for regulating flow and/or pressure, connects with pressure piping 6
Connect.
It is preferred that, in above-mentioned gas producing device, filter is provided with the low pressure pipeline 2 and pressure piping 6.
It is preferred that, in above-mentioned gas producing device, remote pressure gauge 5, the remote pressure gauge are installed on the pressure piping 6
5 are connected with device for automatically regulating.
It is preferred that, in above-mentioned gas producing device, the pressure piping 6 is provided with high pressure lateral.
It is preferred that, in above-mentioned gas producing device, described return is provided with gas-liquid separator 13 in liquid pipe 12, the gas-liquid separator
13 are connected by pipeline with air collecting pipe 14.
It is preferred that, in above-mentioned gas producing device, the wellhead assembly 11 includes high-pressure well mouth flow part, low pressure Well head flow path
Part, top valve 231, the cross four-way 233 being connected with top valve, well head 110 and the suspension arrangement being arranged in well head 110
232；
The high-pressure well mouth flow part includes the central high pressure pipe 61 and annular space high-voltage tube 62 that are set up in parallel, and high-voltage tube
Road 6 is connected；The low pressure Well head flow path part includes the center low-voltage tube 211 and annular space low-voltage tube 221 being set up in parallel, with returning liquid
Pipe 12 is connected；
The mixing liquid pipe 15 is connected by suspension arrangement 232 with annular space high-voltage tube 62 and annular space low-voltage tube 221；It is described
Power liquid pipe 16 is connected by cross four-way 233 with central high pressure Guan61He centers low-voltage tube 211.
It is preferred that, in above-mentioned gas producing device, high pressure valve 611 is provided with the central high pressure pipe 61, the annular space is high
It is provided with pressure pipe 62 on annular space high pressure valve 621, the center low-voltage tube 211 and is provided with center low pressure valve 212, the ring
Annular space low pressure valve 222 is provided with empty low-voltage tube 221.
The gas production method of hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit described in the utility model comprises the steps：
(1) coal dust and reservoir sand of mixed liquor are sunk to after tank bottom in settling tank, and gained liquid is sequentially passed through in settling tank
Surface duct, power liquid pipe 16 is flowed to by wellhead assembly 11, into the direct circulation contra-injection jet pump 17 of downhole device；
(2) in the presence of direct circulation contra-injection jet pump 17, the formation fluid comprising coal dust and reservoir sand is inhaled into just
Cycle reverses jetting stream pump 17, is mixed to form after mixed liquor with power fluid, and ground is given rise to by mixing liquid pipe 15；
(3) mixed liquor in mixing liquid pipe 15 is returned in settling tank 1 by returning liquid pipe 12；
(4) coal bed gas is discharged by air collecting pipe 14.
It is preferred that, in above-mentioned gas production method, the direct circulation contra-injection jet pump 17 includes pump barrel 25 and pump core, institute
State and power fluid runner, formation fluid runner and mixed liquor runner are provided with pump core, the power fluid flow channel entry point and power liquid pipe
16 lower ends are connected, and the mixed liquor runner exit is connected with mixing liquid pipe 15 lower end；
Wherein, the power fluid runner is disposed with along power fluid flow direction：The starting connected with the power liquid pipe 16
Duan Liudao 511, along the pump barrel barrel set Drainage Section runner 514 and pressure chamber 515, the pressure chamber 515 with starting
Fluid flows to opposite one end and is provided with nozzle 29 in Duan Liudao 511；
The step (2) comprises the steps：
Liquid enters after power fluid runner from the initial segment runner 511 obtained by the settling tank, reversely upward at nozzle 29
Injection, formation fluid is driven by the pressure differential of depression formation at nozzle, into formation fluid runner, is being mixed with liquid obtained by settling tank
It is discharged into after being mixed in liquid runner in mixed liquor pipe 15.
It is preferred that, in above-mentioned gas production method, the mixed liquor runner is disposed with trunnion 28, diffusion along fluid flow direction
Pipe 27 and outlet section mixed liquor runner, the trunnion 28 are connected with nozzle 29, fluid flow direction and the initial segment stream in the trunnion 28
Fluid flow direction is opposite in road 511；Fluid flow direction and the initial segment runner 511 of power fluid runner in the outlet section mixed liquor runner
Angle >=90 ° of middle fluid flow direction；
In the step (2), the formation fluid enters formation fluid runner, is mixed in trunnion 28 with liquid obtained by settling tank
Mixed liquor is formed, mixed liquor flows to anemostat 27, be discharged into by outlet section mixed liquor runner in mixing liquid pipe 15.
It is preferred that, in above-mentioned gas production method, it is additionally provided with the pump core for connecting the initial segment runner 511 and drainage
Duan Liudao 514 undertaking section runner 513, the undertaking section runner is also communicated with tributary runner 512, the tributary runner 512 with
Power liquid pipe 16 is connected, and is in angle with the initial segment runner 511；
In the step (2), liquid obtained by settling tank also enters power fluid runner by tributary runner 512.
It is preferred that, in above-mentioned gas production method, the pump core of direct circulation contra-injection jet pump 17 is additionally provided with for isolating
The sealing 31 of power fluid runner, formation fluid runner and mixed liquor runner；
In the step (2), liquid obtained by settling tank also enters power fluid runner by tributary runner 512.
It is preferred that, in above-mentioned gas production method, the downhole device also including the tail pipe 18 with formation fluid flow passage and is put
Suction line 19 in the inner chamber of tail pipe 18, the tail pipe 18 is provided with screen casing in one end of connection formation fluid runner；
In the step (2), formation fluid enters tail pipe 18 by screen casing, flows through suction line 19 and leads into formation fluid runner
Road.
It is preferred that, in above-mentioned gas production method, the downhole device also including the tail pipe 18 with formation fluid flow passage and is put
Suction line 19 in the inner chamber of tail pipe 18, the tail pipe 18 is provided with screen casing in one end of connection formation fluid runner；
In the step (2), the formation fluid enters tail pipe 18 from screen casing, flows through suction line 19, flows through formation fluid runner
Mixed afterwards at trunnion 28 with power fluid.
It is preferred that, in above-mentioned gas production method, the surface duct includes low pressure pipeline 2, the height being sequentially connected with settling tank 1
Press pump 4 and pressure piping 6；Wherein, the pressure of the low pressure pipeline is less than or equal to 1.6MPa；The pressure model of the pressure piping
Enclose for more than 1.6MPa；The ground installation also includes the device for automatically regulating for regulating flow and/or pressure, with high-voltage tube
Road 6 is connected.
Filter is provided with the low pressure pipeline 2 and pressure piping 6；
In the step (1), the liquid in settling tank first passes through low pressure pipeline 2, high-pressure pump 4 is flowed into after filtering, through high pressure
After pump 4 pressurizes, pressure piping 6 is flowed to, power liquid pipe 16 is flowed to by wellhead assembly；High-voltage tube is regulated and controled by device for automatically regulating
The fluid flow and/or pressure in road 6.
It is preferred that, in above-mentioned gas production method, remote pressure gauge 5, the remote pressure gauge are installed on the pressure piping 6
5 are connected with device for automatically regulating；
Wherein, in step (1), when power fluid flows into pressure piping 6, the remote pressure gauge 5 detects pressure signal, passes through
The operating pressure of device for automatically regulating adjusting high-pressure pump, and then regulate and control the pressure value of pressure piping 6.
During single well-controlled, remote pressure gauge 5 and volume control device 9 can be removed, device for automatically regulating directly with flowmeter 8
Connection, directly controls power flow quantity to play the purpose automatically controlled.
It is preferred that, in above-mentioned gas production method, the wellhead assembly 11 includes high-pressure well mouth flow part, low pressure Well head flow path
Part, top valve 231, the cross four-way 233 being connected with top valve, well head 110 and the suspension arrangement being arranged in well head 110
232,
The high-pressure well mouth flow part includes the central high pressure pipe 61 and annular space high-voltage tube 62 that are set up in parallel, and high-voltage tube
Road 6 is connected；The low pressure Well head flow path part includes the center low-voltage tube 211 and annular space low-voltage tube 221 being set up in parallel, with returning liquid
Pipe 12 is connected；
The mixing liquid pipe 15 is connected by suspension arrangement 232 with annular space high-voltage tube 62 and annular space low-voltage tube 221；It is described
Power liquid pipe 16 is connected by cross four-way 233 with central high pressure Guan61He centers low-voltage tube 211；
In the step (1), the liquid in the settling tank is flowed through after pressure piping 6, high by the center of wellhead assembly
Pressure pipe 61 enters the power liquid pipe 16 of attachment means；
In step (3), the mixed liquor is flowed through after mixing liquid pipe 15, enters ground installation by annular space low-voltage tube 221
Return in liquid pipe 12.
It is preferred that, in above-mentioned gas production method, described return is provided with gas-liquid separator 13 in liquid pipe 12, the gas-liquid separator
13 are connected by pipeline with air collecting pipe 14；
Wherein, the step (4) includes following two steps：
(1) subterranean coal air-flow enters air collecting pipe 14 through wellhead assembly 11；
(2) fluid in liquid pipe 12 is returned after the separation of gas-liquid separator 13, and gained coal bed gas enters air collecting pipe 14.
It is preferred that, in the gas production method, high pressure valve 611 is provided with the central high pressure pipe 61, the annular space is high
It is provided with pressure pipe 62 on annular space high pressure valve 621, the center low-voltage tube 211 and is provided with center low pressure valve 212, the ring
Annular space low pressure valve 222 is provided with empty low-voltage tube 221；
Wherein, central high pressure valve 611 and annular space low pressure valve 222 are opened during normal production, annular space high pressure is simultaneously closed off
Valve 621 and center low pressure valve 212；When needing to exchange for pump core, annular space high pressure valve 621 and center low pressure valve are opened
212, closing center's high pressure valve 611 and annular space low pressure valve 222 inject fluid into mixing liquid pipe 15, pump core are given rise to
Wellhead assembly 11, opens top valve 231 and takes out pump core.
The utility model has the advantages that：(1) high pressure filter, gas-liquid separator, the row of improving are added in ground installation
Sand arranges the service life and security of coal dust device；(2) flow-control equipment is added in ground installation, attachment means are added
Bottom hole pressure bomb, hardware foundation is provided to automatically control with remote control, is that Automated condtrol is got ready；(3) can be
Plunger pump increase forcedlubricating system in ground installation, the motion portion of plunger pump is protected when low frequency works well
Part, extends service life；(4) hardened layer can be increased in jet pump body, extend wearing- in period；(5) it is breakthrough to devise
The runner design of direct circulation contra-injection, reduces the aggregation of coal dust and sand grains, reduces energy consumption.
Brief description of the drawings
Fig. 1 is the schematic diagram of ground installation described in embodiment 1.
Fig. 2 is the schematic diagram of attachment means described in embodiment 1.
Fig. 3 is the schematic diagram of direct circulation contra-injection jet pump described in embodiment 1.
Fig. 4 is the schematic diagram of power fluid runner in direct circulation contra-injection jet pump described in embodiment 1.
Wherein, 1 is settling tank, and 111 be internal partition, and 112 be overfall, and 2 be low pressure pipeline, and 3 be low-pressure filter, and 4 are
High-pressure pump, 5 be remote pressure gauge, and 6 be pressure piping, and 7 be high pressure filter, and 8 be flowmeter, and 9 be volume control device, 10
It is wellhead assembly for high-pressure gauge, 11,12 be to return liquid pipe；13 be gas-liquid separator, and 110 be well head；231 be top valve,
232 be suspension arrangement, and 233 be high-voltage tube centered on cross four-way, 61, and 62 be low-voltage tube centered on annular space high-voltage tube, 211,
221 be high pressure valve centered on annular space low-voltage tube, 611, and 621 be low pressure valve centered on annular space high pressure valve, 212, and 222 are
Annular space low pressure valve, 14 be air collecting pipe, and 15 be power liquid pipe for mixing liquid pipe, 16, and 17 be hydraulic jet pump, and 18 be tail pipe, 19
It is coal seam for suction line, 20,21 be artificial bottom of a well, and 22 be sleeve pipe, and 23 be bottom hole pressure bomb；24 be insertion joint, and 25 be pump
Cylinder, 26 be pump core housing, and 27 be anemostat, and 28 be trunnion, and 29 be nozzle, and 30 be standing valve, and 31 be sealing, and 32 be mixed liquor
Outlet, 511 be the initiating terminal runner of power fluid runner, and 512 be tributary runner, and 513 is accept section runner, and 514 be that Drainage Section is flowed
Road, 515 be pressure chamber.
Embodiment
The utility model provides a kind of hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit, including ground installation, attachment means
And downhole device.
Wherein, downhole device is mainly jet pump, and the operation principle of jet pump is：When power fluid is sprayed by nozzle at high speeds
Afterwards, the pressure energy of power fluid is to form low pressure around kinetic energy, nozzle, and formation fluid is inhaled into pipe under bottom pressure, two
Stock liquid is mixed in trunnion, the reduction of power fluid speed, is inhaled into the rise of liquid speed degree, is ultimately formed mixed liquor, speed becomes
In consistent.After mixed liquor flows out trunnion, as runner increases, the reduction of mixed liquor speed, it can be seen from bernoulli principle, now
The pressure increase of mixed liquor, ground will be given rise to when pressure is enough.
With reference to the accompanying drawings and examples, the utility model and its advantageous effects are described in detail.
Embodiment 1
In a kind of preferred embodiment of the present utility model, the hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit includes
Following apparatus：
1. ground installation
Ground installation, as the power place of package unit, is to ensure the key that package unit can be operated steadily.This implementation
The example ground installation composition is as shown in figure 1, including following structures：
1.1 settling tanks 1
The settling tank 1 is settling tank step by step, is to have in the equipment that rework solution carries out coal dust sand sedimentation, tank body in multistage
Dividing plate 111, forms multiple septaliums in tank body.The can body top of settling tank 1 is provided with overfall 112, and can body is last
Fluid issuing is provided with one-level septalium；Fluid intake is provided with the middle part of can body.
1.2 surface duct
The surface duct includes low pressure pipeline 2 and pressure piping 6, the low pressure pipeline 2 and the fluid issuing of settling tank 1
Low-pressure filter 3 is provided with connection, low pressure pipeline 2.
High-pressure pump 4 is provided between low pressure pipeline 2 and pressure piping 6.
The pressure piping 6 draws the first lateral and second branched pipe road, is given birth to respectively with the first producing well and second
The wellhead assembly 11 for producing the attachment means of well is connected；Edge on remote pressure gauge 5, lateral is provided with the pressure piping 6
Fluid flow direction is disposed with high pressure filter 7, flowmeter 8, volume control device 9 and high-pressure gauge 10, finally and well head
The high-pressure well mouth flow part connection of device 11.
In the present embodiment, the high-pressure pump is plunger pump, but high-pressure pump is not limited to plunger pump described in the utility model, also
Can be other pump-type that pressure energy reaches requirement.
Wherein, described " low pressure " refers to not higher than 1.6MPa pressure environment, and " high pressure " refers to being higher than
1.6MPa pressure environment.
In the present embodiment, lateral is two, but in the utility model, the quantity of the high pressure branch is not limited to two
It is individual, it can be adjusted according to actual conditions, optimum efficiency is 1-6.
1.3 device for automatically regulating
The device for automatically regulating is connected with the remote pressure gauge 5 and volume control device 9 on high pressure lateral, with
Control power flow quantity and pressure.
1.4 return liquid pipe 12
The fluid intake that the one end of liquid pipe 12 is returned with settling tank 1 is connected, the low pressure of the wellhead assembly 11 of the other end and producing well
Well head flow path part is connected；And gas-liquid separator 13 is provided with liquid pipe 12 is returned.
1.5 air collecting pipes 14
The lower end of the air collecting pipe 14 is extended in sleeve pipe 22, be placed in the annular space between sleeve pipe 22 and mixing liquid pipe 15,
Upper port is above the ground level.
The working condition of above-mentioned ground installation is as follows：
In groove of the rework solution by returning the first order internal partition that liquid pipe 12 enters settling tank 1 in downhole device, after filling
Next stage septalium is automatically flowed into, until flowing into afterbody septalium.Using gravity and low flow velocity, coal dust and sand grains will sink
Form sediment to tank bottom.The unnecessary water that comes up is lifted, processing pond is discharged into by overfall on tank body top.Water after precipitation passes through low pressure
Pipeline 2 is flowed out, then flows into plunger pump 4 after the filtering of low-pressure filter 3, and default pressure is pressurized in plunger pump to be turned into
Power fluid, the remote pressure gauge 5 that power fluid is flowed on pressure piping 6, pressure piping can be changed into pressure parameter in control letter
Number, frequency converter is inputed to, after the pressure value that pressure parameter is set with frequency converter is compared, plunger pump variable-frequency motor is raised and lowered
Working frequency, make the pressure value stabilization in high-voltage tube in the range of pressure values set by frequency converter.Power fluid passes through well head
The high-pressure well mouth flow part of device 11, into power liquid pipe 16；Underground mixed liquor gives rise to ground from mixing liquid pipe 15
Afterwards, the low pressure Well head flow path part of wellhead assembly is flowed through, into returning in liquid pipe 12.
Because plunger pump has high pressure motive part, its valve element is in high pressure and fragmentation sometimes, these fragmentations under operating in a high frequency
Piece may block underground runner, and larger fragment results even in stopping production pump detection and workover.Add after high pressure filter, only
Need to clean high pressure filter, protect downhole device.
After formation fluid is mixed to form mixed liquor at downhole device with power fluid, ground is given rise to by attachment means, is led to
Cross and return liquid pipe 12 and flow to gas-liquid separator 13, gas-liquid separator can separate the coal bed gas in rework solution and mixed liquor, mixed liquor
Flow into settling tank 1 step by step.Coal bed gas enters air collecting pipe 14 by pipeline, has so both accomplished safety and environmental protection, and do not waste coal
Layer gas.
2. attachment means
Ground installation is connected in attachment means, lower connection downhole device plays a part of each device of connection, while being also well
Bottom device is delivered, lifted, the ensuring equipment of production, structure such as Fig. 2, including following structures：
2.1 wellhead assemblies 11
Top valve 231 is provided with the top of wellhead assembly, wellhead assembly includes well head 110, is arranged in well head 110
Suspension arrangement 232,233,4 valves of cross four-way, high-pressure well mouth flow part and low pressure Well head flow path part.Wherein high-pressure well mouth stream
Journey part is made up of central high pressure pipe 61 and annular space high-voltage tube 62, and rear end passes through central high pressure valve 611 and annular space high pressure valve respectively
Door 621 is connected with power liquid pipe 16 and mixing liquid pipe 15.Low pressure Well head flow path Jian You centers low-voltage tube 211 and annular space low-voltage tube
221 compositions, front end by center low pressure valve 212 and annular space low pressure valve 222 and power liquid pipe 16 and mixes liquid pipe 15 respectively
Connection.High-pressure well mouth flow part front end is connected with the high-voltage tube 6 in ground installation.Low pressure Well head flow path part connects with returning liquid pipe 12
It is logical.
Central high pressure valve 611 and annular space low pressure valve 222 are opened during normal production, annular space high pressure valve is simultaneously closed off
621 and center low pressure valve 212.When needing to exchange for pump core, valve switch situation is opposite with normal production, now by mixing
Liquid pipe water filling is closed, pump core is given rise to wellhead assembly 11, top valve 231 is opened and takes out pump core.
In addition, it is also possible to which solenoid directional control valve replaces central high pressure valve 611 and annular space high pressure valve 621, and similarly center is low
Pressure valve 212 and annular space low pressure valve 222 are same, when needing to exchange for pump core, original injection hydrodynamic liquid pipe after commutation
Become the pipeline of trickle, now pump core gives rise to ground by force by fluid power, is convenient for changing, thus realize pump core dispensing and
Maintenance change, it is easy to operate and safe.
2.2 power liquid pipes 16
The power liquid pipe 16 is connected by cross four-way 233 with central high pressure Guan61He centers low-voltage tube 211.Ten
Central high pressure valve 611 is installed, between cross four-way 16 and center low-voltage tube 211 between word four-way 233 and central high pressure pipe 61
Center low pressure valve 212 is installed.
2.3 mixing liquid pipes 15
Mixing liquid pipe 15 is enclosed on the outside of power liquid pipe 16, and mixing liquid pipe 15 hangs on well head 110 by suspension arrangement 232
It is interior.It is connected, is connected by annular space low pressure valve 222 with annular space low-voltage tube 221 with annular space high-voltage tube 62 by annular space high pressure valve 621
Connect.During work, underground mixed liquor passes sequentially through mixing liquid pipe 15, the entrance of annular space low-voltage tube 221 and returned in liquid pipe 12.
Wellhead assembly is used for down-hole string suspension, and there is high and low pressure runner inside.The upper end of well dynamic liquid pipe 16 leads to
Cross wellhead assembly 11 to connect with ground pressure piping, the upper end of mixing liquid pipe 15 is connected by wellhead assembly 11 with returning liquid pipe 12；
The upper end of the lower end of well dynamic liquid pipe 16 and the lower end of mixing liquid pipe 15 with the hydraulic jet pump 17 of downhole device is connected.
3. downhole device
Downhole device includes hydraulic jet pump, tail pipe and suction line.
3.1 hydraulic jet pump
Because coal bed gas well mining is in the requirement in each period and the formation fluid change of coal bed gas well, cause the row of jet pump
Excursion is measured very big, in order to adjust jet pump displacement size, it would be desirable to change pump core to meet production requirement.Therefore handle
Jet pump is decomposed into pump barrel, two parts of pump core, and pump barrel is installed to mixing liquid pipe 15 lower end, and tail pipe 18 and suction line 19 are installed
To pump barrel lower end, then the pump that mixing liquid pipe, pump barrel, tail pipe, suction line are put into coal bed gas well shaft bottom hangs position, then whole
Tubing string is hanging on wellhead assembly 11.Then power liquid pipe is inserted in the middle of mixing liquid pipe, until pump is inserted in power liquid pipe lower end
Cylinder, then power liquid pipe upper end is connected on the high-pressure well mouth flow part of wellhead assembly 11, connected with pressure piping.Needing production
When, open the top valve of wellhead assembly 11, so that it may put into pump core, close crown valve behind the door, pump core is just inserted as power fluid is descending
Enter to pump barrel fixed position.Replacing construction has so both been saved, substantial amounts of operating cost has been saved again.
Conventional jet pump is according to the difference of endless form, and jet pump can be divided into direct circulation (standard cycle) and counter follow again
Ring two ways.Direct circulation mode is using center oil pipe as power fluid tubing string, using oil, collar-shaped space as mixed liquor recurrent canal
Post；Reacting cycle mode is then that, using oil, collar-shaped space as power fluid tubing string, and mixed liquor Ze You centers oil pipe returns and is discharged to ground
Face.
The jet pump of coal bed gas well is all mostly direct circulation mode, facilitates the dispensing of pump core.The conventional jet of direct circulation
Pump power liquid is downward injection in the injection direction of nozzle, because the low pressure or negative pressure that are produced at nozzle produce pressure differential, formation fluid
Up flowed by suction line, now the flow direction of power fluid and the flow direction of formation fluid are opposite.Formation fluid and dynamic
Power liquid continues flow down to anemostat after being mixed in trunnion, kinetic energy is converted into pressure energy, and mixed liquor is again in pump core and pump barrel
Connecting passage at commutate again, by power liquid pipe and mixing liquid pipe between annular space given rise to ground.Direct circulation
Conventional jet pump, formation fluid need carry out 2 times commutation, can form turbulent flow in the place of commutation, due to formation fluid contain coal
Powder and sand grains, coal dust and sand grains are easily assembled in the runner of commutation, cause runner abrasion to accelerate and easily block runner.
Reverse circulating conventional jet pump power liquid is upward injection in the injection direction of nozzle, because of the low pressure produced at nozzle
Or negative pressure produces pressure differential, formation fluid is up flowed by suction line, the now flowing of the flow direction of power fluid and formation fluid
Direction is identical.Underlying liquid continues to flow up to anemostat after mixing in trunnion with power fluid, passes through center oil pipe quilt
Give rise to ground.Reverse circulating conventional jet pump, underlying liquid only needs to once be commutated.Reverse circulating jet pump is in coal bed gas
It is fewer that well is applied, because pump core needs to change, reverse circulating pump core also needs to grappling when dispensing to shaft bottom pump barrel, such as
Grappling is not tight, and pump core can be given rise to ground by power fluid, causes jet pump can not normal work.When needing to change pump core, solution
Except grappling is also possible to failure, result in the need for pump detection and workover, although therefore reverse circulating runner is more reasonable, in coal bed gas well
It is also considerably less using reverse circulating jet pump.
To solve the above problems, the jet pump used in the present embodiment is the jet pump of direct circulation contra-injection, combine
Direct circulation and reverse circulating advantage, solve direct circulation and reverse circulating defect well.Direct circulation contra-injection jet pump is such as
Shown in Fig. 3, including pump barrel 25 and pump core.
The upper end of the lower end of well dynamic liquid pipe 16 and the lower end of mixing liquid pipe 15 with the hydraulic jet pump 17 is connected,
The lower end of power liquid pipe 16 is connected by inserting joint 24 with the inner chamber of pump barrel 25, mixing liquid pipe 15 directly with the coupling phase of pump barrel 25
Even.There is annular space between the inner chamber of pump barrel 25 and coupling, be connected with power liquid pipe 16 and the annular space for mixing liquid pipe 15.
The pump core includes pump core housing 26 and is arranged at the power fluid runner, formation fluid runner and mixed liquor of enclosure interior
Runner.Each runner is isolated by housing with pump barrel.
Wherein, the power fluid flow passage structure along flow direction as shown in figure 4, be disposed with：Set along the central shaft of pump barrel 25
The initial segment runner 511, accept section runner 513, along barrel axially arranged Drainage Section runner 514 and pressure chamber 515, in pressure
Chamber flows to opposite one end with the initial segment runner dynamics liquid and is provided with nozzle 29.Wherein, accepting section runner 513 is used to connect starting
Duan Liudao 511 and Drainage Section runner 515, and tributary runner 512 is communicated with, the tributary runner 512 is in the initial segment runner 511
Angle；The initial segment runner 511 and tributary runner 512 are all communicated with power liquid pipe 16.Now, flowed in the initial segment runner 511
Direction of flow is consistent with fluid flow direction in power liquid pipe 16, can all be referred to as forward flow.
Wherein, formation fluid runner be provided with can replacement and fixation valve 30, and connected with the trunnion 28 of following mixed liquor runners,
When pump is in big hole deviation section or in horizontal segment, due to the influence of gravity or coal dust, conventional fixed valve ball is possible to answer
Position.After verification experimental verification, the fixed valve ball that I takes charge of design can reset under the promotion of spring, it is to avoid because fixed valve ball can not
Leaked caused by resetting.
Wherein, mixed liquor runner liquid flow direction along along power liquid pipe 16 is reversely connected with turn：Trunnion 28, the and of anemostat 27
Outlet section mixed liquor runner；The trunnion 28 and nozzle 29 and formation fluid flow passage, the anemostat 27 are described in horn-like
Fluid flow direction and fluid flow direction in power liquid pipe 16 are in angle in outlet section mixed liquor runner, preferably >=90 °.
In the hydraulic jet pump of the present embodiment, power fluid reversely sprays upwards at nozzle 29.By can replacement and fixation
The formation fluid of valve 30 is driven by the pressure differential of depression formation at nozzle, and mixed liquor is mixed to form with power fluid in trunnion 28.It is mixed
Close liquid and flow to anemostat 27, complete the conversion of kinetic energy and pressure energy in anemostat, power liquid pipe is discharged into by mixture export 32
16 and mixing liquid pipe 15 annular space, then give rise to ground.
Wherein, sealing 31 is additionally provided with the jet pump, for power fluid, formation fluid, mixed liquor to be kept apart.
3.2 tail pipes 18 and suction line 19
Tail pipe 18 and suction line 19 are connected with pump barrel lower end, the upper end of tail pipe 18 is provided with screen casing, and under jet pump 17
End connection.Suction line 19 occupy the inner chamber of tail pipe 18, and upper end is connected with the lower end of jet pump 17, tail pipe and suction line all with stratum
Liquid flow passage.Tail pipe 18 and the lower end of suction line 19 are placed in coal seam below 20, artificial bottom of a well more than 21；The air collecting pipe 14
Lower end is extended in sleeve pipe, upper port is above the ground level.Confining bed is located between jet pump 17 and tail pipe 18, and the upper end of tail pipe 18 is equipped with sieve
Pipe, because the density of coal bed gas is far below the density of formation fluid, coal bed gas can be by mixing the annular space between liquid pipe and sleeve pipe
Into air collecting pipe 14, suction line 19 is not flowed into, material is thus formed the confining bed to coal bed gas.Due to the suction of jet pump,
Formation fluid can enter from screen casing, flow through suction line 19, be mixed at jet pump trunnion with power fluid, form mixed liquor.Ground post
The high voltage power liquid that plug pump 4 is provided flows to power liquid pipe 16 through wellhead assembly 11, enters jet pump 17 in power liquid pipe lower end,
Sprayed at nozzle.Trunnion formation mixed liquor after anemostat, the annular flowed between power liquid pipe 16 and mixing liquid pipe 15
Space, ground is given rise to finally by wellhead assembly 11.On the outside of the mixing liquid pipe of jet pump upper end, bottom hole pressure bomb is installed
23 can monitor bottom pressure in real time, and data foundation is provided to automatically controlling.
In the present embodiment, the direct circulation contra-injection jet pump power fluid completes commutation inside jet pump, is also
Power fluid, formation fluid, the unique of three kinds of liquid of mixed liquor are once commutated, therefore low with energy loss, and coal seam deposits few excellent
Point.Power fluid has completed precipitation and multiple times of filtration in ground installation simultaneously, few containing coal dust containing sand, to the impact of commutation runner, mill
Damage also very low, extend service life.Formation fluid is aspirated into after jet pump, and flow direction does not change acutely, therefore coal dust is poly-
Collection is few, and sand sedimentation is few, and energy loss is small, effectively raises the pump efficiency of jet pump.
Shaft bottom blank pipe intercolumniation is small, causes that jet pump portion pump housing wall thickness is thin, and power fluid flowing velocity in jet pump is very high,
Its a small amount of solid impurity carried is big to pump housing effect of attrition, therefore adds hardened layer on the thin-walled pump housing of Drainage Section runner 514,
Improve the hardness and wearability of the thin-walled pump housing.Meanwhile, according to the size in underground space, Drainage Section runner 514 is not limited only to build
Stand in inside pump core, also can share segment space with pump barrel 25 sets up Drainage Section runner, increase on the stream section runner thin-walled pump housing
Hardened layer.
Embodiment 2
The utility model another preferred embodiment in, the retrievable type sand, coal dust discharging and gas-producing unit with implement
Example 1 is similar, differs only in the mixing liquid pipe 15 and is not enclosed on the outside of power liquid pipe 16, but is arranged side by side with power liquid pipe 16
Row.
The mixing liquid pipe 15 is communicated with the mixed liquor runner exit of direct circulation contra-injection jet pump, the power liquid pipe
16 communicate with the power fluid runner of direct circulation contra-injection jet pump.
Embodiment 3
The utility model another preferred embodiment in, the retrievable type sand, coal dust discharging and gas-producing unit with implement
Example 1 is similar, differs only in, and the pressure piping 6 connects individual well, is not provided with lateral；Stream is only installed on pressure piping 6
Gauge 8, remote pressure gauge 5 is not installed, and device for automatically regulating is directly connected with flowmeter 8, directly controls power flow quantity to rise
To the purpose automatically controlled.
Embodiment 4
The utility model another preferred embodiment in, the retrievable type sand, coal dust discharging and gas-producing unit with implement
Example 1 is similar, differs only in, in direct circulation contra-injection jet pump, and the Drainage Section runner 514 of pump core power fluid runner is also
It is axially arranged along barrel, but be not provided with housing between barrel, i.e.,：At Drainage Section runner 514, pump core is cooperatively formed with pump barrel
Drainage Section runner 514, a part of the pump barrel directly as the tube wall of Drainage Section runner 514.
In actual applications, formation fluid runner can be adjusted by method similar to Example 4 according to space size
Or the structure of mixed liquor runner, as long as power fluid, formation fluid, mixed liquor are kept apart by sealing 31.
In summary, hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit described in the utility model can pass through filter and gas-liquid
Separator can improve service life and security, can carry out Automated condtrol by device for automatically regulating, direct circulation used is reverse
Jetting stream pump can reduce the aggregation of coal dust and sand grains, reduce energy consumption, realize that pump group is in parallel, share power fluid pipeline, reduce into
This, has broad application prospects.
Claims (10)
1. a kind of hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit, includes the ground installation of sequential communication, attachment means and shaft bottom
Device, it is characterised in that the ground installation includes settling tank (1), the difference that can body is provided with fluid inlet and fluid issuing
Fluid issuing is connected with fluid inlet therewith surface duct and return liquid pipe (12), and connected with following wellhead assemblies (11)
Air collecting pipe (14)；The attachment means include wellhead assembly (11), the power liquid pipe (16) that hangs in wellhead assembly (11) and
Mix liquid pipe (15)；The downhole device includes reversely spraying with the direct circulation that power liquid pipe (16) and mixing liquid pipe (15) are connected
Penetrate jet pump (17)；Wherein, the surface duct and return liquid pipe (12) by wellhead assembly (11) respectively with power liquid pipe (16)
Connected with mixing liquid pipe (15)；The mixing liquid pipe (15) is enclosed on outside power liquid pipe (16) or set side by side with power liquid pipe (16)
Put.
2. gas producing device according to claim 1, wherein, the direct circulation contra-injection jet pump (17) includes pump barrel
(25) power fluid runner, formation fluid runner and mixed liquor runner and pump core, are provided with the pump core, the power fluid runner enters
Mouth is connected with power liquid pipe (16) lower end, and the mixed liquor runner exit is connected with described mixing liquid pipe (15) lower end；
Wherein, the power fluid runner is disposed with along power fluid flow direction：The initial segment connected with the power liquid pipe (16)
Runner (511), the Drainage Section runner (514) and pressure chamber (515) set along the pump barrel barrel, the pressure chamber (515) exist
Opposite one end, which is flowed to, with fluid in the initial segment runner (511) is provided with nozzle (29).
3. gas producing device according to claim 2, wherein, the mixed liquor runner is disposed with trunnion along fluid flow direction
(28), anemostat (27) and outlet section mixed liquor runner, the trunnion (28) connect with nozzle (29), are flowed in the trunnion (28)
Direction of flow is opposite with fluid flow direction in the initial segment runner (511)；Fluid flow direction and power fluid in the outlet section mixed liquor runner
Angle >=90 ° that fluid is flowed in the initial segment runner (511) of runner.
4. gas producing device according to claim 2, wherein, it is additionally provided with the pump core for connecting the initial segment runner
(511) and Drainage Section runner (514) undertaking section runner (513), it is described undertaking section runner be also communicated with tributary runner (512),
The tributary runner (512) connects with power liquid pipe (16), and is in angle with the initial segment runner (511).
5. gas producing device according to claim 3, wherein, the formation fluid runner is connected with the trunnion (28), stratum
Liquid runner is provided with replacement and fixation valve (30), the replacement and fixation valve (30) and is provided with spring.
6. gas producing device according to claim 2, wherein, direct circulation contra-injection jet pump (17) pump core is also set up
Have for isolating the sealing of power fluid runner, formation fluid runner and mixed liquor runner (31).
7. gas producing device according to claim 1, wherein, the downhole device also includes the tail with formation fluid flow passage
Pipe (18) and the suction line (19) for being placed in tail pipe (18) inner chamber, the tail pipe (18) are provided with one end of connection formation fluid runner
Screen casing.
8. gas producing device according to claim 1, wherein, the surface duct includes what is be sequentially connected with settling tank (1)
Low pressure pipeline (2), high-pressure pump (4) and pressure piping (6)；Wherein, the pressure of the low pressure pipeline is less than or equal to 1.6MPa；Institute
The pressure limit for stating pressure piping is more than 1.6MPa；
The ground installation also includes the device for automatically regulating for regulating flow and/or pressure, is connected with pressure piping (6).
9. gas producing device according to claim 1, wherein, described return is provided with gas-liquid separator (13) in liquid pipe (12),
The gas-liquid separator (13) is connected by pipeline with air collecting pipe (14).
10. gas producing device according to claim 8, wherein, the wellhead assembly (11) includes high-pressure well mouth flow part, low
Press Well head flow path part, top valve (231), the cross four-way (233) being connected with top valve, well head (110) and be arranged at well
Suspension arrangement (232) in mouth (110),
The high-pressure well mouth flow part includes the central high pressure pipe (61) and annular space high-voltage tube (62) that are set up in parallel, and high-voltage tube
Road (6) is connected；The low pressure Well head flow path part includes the center low-voltage tube (211) and annular space low-voltage tube (221) being set up in parallel,
It is connected with returning liquid pipe (12)；
The mixing liquid pipe (15) is connected by suspension arrangement (232) with annular space high-voltage tube (62) and annular space low-voltage tube (221)；Institute
Power liquid pipe (16) is stated to be connected with central high pressure pipe (61) and center low-voltage tube (211) by cross four-way (233).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621405021.2U CN206495664U (en) | 2016-12-20 | 2016-12-20 | Hydraulic running and pulling formula sand, coal dust discharging and gas-producing unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522892A (en) * | 2016-12-20 | 2017-03-22 | 中矿瑞杰(北京)科技有限公司 | Hydraulic throwing-in and pulling type sand-draining coal dust-draining gas production device and method |
| CN113236190A (en) * | 2021-06-19 | 2021-08-10 | 西南石油大学 | Diameter-variable plunger of drainage gas production intelligence |
-
2016
- 2016-12-20 CN CN201621405021.2U patent/CN206495664U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522892A (en) * | 2016-12-20 | 2017-03-22 | 中矿瑞杰(北京)科技有限公司 | Hydraulic throwing-in and pulling type sand-draining coal dust-draining gas production device and method |
| CN106522892B (en) * | 2016-12-20 | 2019-12-10 | 中矿瑞杰(北京)科技有限公司 | Hydraulic throwing-fishing type sand discharging and coal powder discharging gas production device and method |
| CN113236190A (en) * | 2021-06-19 | 2021-08-10 | 西南石油大学 | Diameter-variable plunger of drainage gas production intelligence |
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