CN207348812U - The device of row's ickings is returned in a kind of coal bed gas well circulation water filling - Google Patents
The device of row's ickings is returned in a kind of coal bed gas well circulation water filling Download PDFInfo
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- CN207348812U CN207348812U CN201721175775.8U CN201721175775U CN207348812U CN 207348812 U CN207348812 U CN 207348812U CN 201721175775 U CN201721175775 U CN 201721175775U CN 207348812 U CN207348812 U CN 207348812U
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Abstract
The utility model belongs to coal bed gas extraction technical field, during in order to solve coal bed gas extraction, the problem of causing bar pump failure because of ickings, provide the device that row's ickings is returned in a kind of coal bed gas well circulation water filling, water tank including being arranged at coal bed gas well ground, the water tank are connected by threeway and pipeline with coal bed gas well, and a connection of threeway is inserted into the drainpipe in coal bed gas well, two of threeway connect water tank by water injection pipe, and three of threeway are directly vented and are equipped with valve two；Solenoid valve and valve three are installed on the drainpipe, booster pump and valve one are installed on water injection pipe.Close valve three, open valve one, valve two, after water pipe water outlet at valve two, start booster pump, while open valve three and close valve two, realize normal water filling, judged according to flowmeter flow in well after the normal water outlet of pvc pipe, close booster pump and realize gravity flow, water injection rate in well is adjusted by valve one and fluid flowmeter according to demand, realize automatically continuously circulation water filling.
Description
Technical field
The utility model belongs to coal bed gas extraction technical field, and in particular to row's ickings is returned in a kind of coal bed gas well circulation water filling
Device.
Background technology
Coal bed gas well mining is most to make coal bed gas product using sucker rod pump continuous pumpage reduction flowing bottomhole pressure (FBHP).Gas well passes through one
Often there is coal seam perforated interval and returns to spit coal dust phenomenon in the mining of section time, and coal dust and minute impurities enter production casing and water flooding
Mixing increases the concentration of water, and continuous with mining carries out, and water flooding ickings content constantly increases, in sucker rod pump continuous sucking
During, water flooding containing ickings is constantly caught in sucker rod pump plunger and pump barrel gap or blocks standing valve, causes sucker rod pump to fail,
Mining is interrupted.
According to statistics, well workover proportion caused by blocking sucker rod pump due to ickings during the block coal bed gas well mining of Qinshui is high
Up to more than 70%, gas well mining continuity is on the one hand seriously affected, on the other hand causes production cost significantly to increase, ickings holddown
Problems demand solves.
The content of the invention
When the utility model is in order to solve coal bed gas extraction, because ickings causes bar to pump the problem of failing, and then one is provided
The device of row's ickings is returned in kind coal bed gas well circulation water filling.
The utility model adopts the following technical solution：
The device of row's ickings is returned in a kind of coal bed gas well circulation water filling, including is arranged at the water tank on coal bed gas well ground, institute
Water tank to be stated to be connected with coal bed gas well by threeway and pipeline, a connection of threeway is inserted into the drainpipe in coal bed gas well,
Two of threeway connect water tank by water injection pipe, and three of threeway are directly vented and are equipped with valve two；Pacify on the drainpipe
Equipped with solenoid valve and valve three, booster pump and valve one are installed on water injection pipe.
The drainpipe is pvc pipe, pvc pipe stretch into length in coal bed gas well than booster pump casing pressure this can water-column
It is more than 15 meters big.
Fluid flowmeter is installed on the water injection pipe.
The solenoid valve is normally closed solenoid valve.
The water tank is interlayer water tank, and upper strata is sedimentation basin, and lower floor is clear water reserviors, and water injection pipe is connected with clear water reserviors.
The utility model has the advantages that：
（1）Initial driving force is provided by booster pump, is rationally adjusted according to surface casing pressure into well water injection string length, the company of realization
Continuous automatic water filling；
（2）Accurately monitored by fluid flowmeter and inject into well water, according to the discharge ickings amount from oil pick-up tube to well head
Scientific and reasonable adjustment water injection rate；
（3）Realize that well site power-off automatically cuts off water route by solenoid valve, ensure that water feeding tank is realized and never cut off the water supply；
（4）Interlayer water tank is designed, filtered water tank is imported after muddy water case precipitation, it is ensured that injects into well water cleaning effectively, water tank is done
Isothermal holding, can realize that worst cold case works；
（5）Relevant device directly from ground construction, without coordinating by well maintenance vehicle, saves construction cost.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
In figure：1- production casings, 2- gas transmission lines, 3- solenoid valves, 4- valves two, 5- fluid flowmeters, 6- valves three, 7-
Threeway, 8- booster pumps, 9- water injection pipes, 10- valves one, 11- water tanks, 12- oil pick-up tubes, 13- drainpipes.
Embodiment
The utility model is by calculating individual well water yield, utilizes ground booster pump, flow monitoring device and electronic control
Device is by stratum output water filtration Posterior circle re-injection to hole, and injection water is less than stratum output water, by circulating mining by well
Ickings is constantly carried to ground, reduces ickings holddown probability.
As shown in Figure 1, the water tank that need to prepare matching volume according to individual well water yield is a set of, water tank divides the structure of the device
Settling tank and filtered water tank, through settling tank to filtered water tank, spare supporting liquid turbine flowmeter one, DN20 PVC drain pipes 60
Rice, 20 meters of D25*2.5 seamless steel pipes, 3 sets of the supporting ball valves of D25*2.5, D25*2.5 threeways one, normally closed solenoid valve one.
Construction and installation program is as follows：
Water tank is connected to gas transmission line mouth using D25*2.5 seamless steel pipes, by shown position mounting ball valve, fluid flow
The equipment such as meter, solenoid valve, booster pump, convert into water-column according to casing pressure and determine DN20 PVC drain pipe length, pvc pipe length is big
15 meters of water-column is converted into casing pressure and enters well, connects pvc pipe and steel pipe.Water tank and surface line equipment do isothermal holding, complete
Into installation.
Valve three is closed, opens valve one, valve two, after water pipe water outlet at valve two, starts booster pump, opens at the same time
Valve three closes valve two, realizes normal water filling, is judged according to flowmeter flow in well after the normal water outlet of pvc pipe, closes supercharging
Pump realizes gravity flow, and water injection rate in well is adjusted according to demand by valve one and fluid flowmeter, realizes automatically continuously circulation water filling,
From oil pick-up tube draining to well head.System cut-off is met, normally closed solenoid valve power-off is closed, and cuts off current, is kept cistern water level motionless, is supplied
It can be continuing with after electricity.
Claims (5)
1. the device of row's ickings is returned in a kind of coal bed gas well circulation water filling, including is arranged at the water tank on coal bed gas well ground（11）,
It is characterized in that：The water tank（11）Pass through threeway（7）It is connected with pipeline with coal bed gas well, threeway（7）A connection stretch
Enter the drainpipe in coal bed gas well（13）, threeway（7）Two pass through water injection pipe（9）Connect water tank（11）, threeway（7）'s
Three are directly vented and are equipped with valve two（4）；The drainpipe（13）On solenoid valve is installed（3）With valve three（6）, water injection pipe
（9）On booster pump is installed（8）With valve one（10）.
2. the device of row's ickings is returned in coal bed gas well circulation water filling according to claim 1, it is characterised in that：The drainpipe
（13）For pvc pipe, the length that pvc pipe is stretched into coal bed gas well compares booster pump（8）Casing pressure this can water-column it is more than 15 meters big.
3. the device of row's ickings is returned in coal bed gas well circulation water filling according to claim 2, it is characterised in that：The water injection pipe
（9）On fluid flowmeter is installed（5）.
4. the device of row's ickings is returned in coal bed gas well circulation water filling according to claim 3, it is characterised in that：The solenoid valve
（3）For normally closed solenoid valve.
5. the device of row's ickings is returned in coal bed gas well circulation water filling according to claim 4, it is characterised in that：The water tank
（11）For interlayer water tank, upper strata is sedimentation basin, and lower floor is clear water reserviors, water injection pipe（9）It is connected with clear water reserviors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721175775.8U CN207348812U (en) | 2017-09-14 | 2017-09-14 | The device of row's ickings is returned in a kind of coal bed gas well circulation water filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721175775.8U CN207348812U (en) | 2017-09-14 | 2017-09-14 | The device of row's ickings is returned in a kind of coal bed gas well circulation water filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207348812U true CN207348812U (en) | 2018-05-11 |
Family
ID=62409884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721175775.8U Active CN207348812U (en) | 2017-09-14 | 2017-09-14 | The device of row's ickings is returned in a kind of coal bed gas well circulation water filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207348812U (en) |
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2017
- 2017-09-14 CN CN201721175775.8U patent/CN207348812U/en active Active
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