CN103470236A - Automatic reinjection water heating production increasing process of coal-bed gas well - Google Patents
Automatic reinjection water heating production increasing process of coal-bed gas well Download PDFInfo
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- CN103470236A CN103470236A CN2013104219795A CN201310421979A CN103470236A CN 103470236 A CN103470236 A CN 103470236A CN 2013104219795 A CN2013104219795 A CN 2013104219795A CN 201310421979 A CN201310421979 A CN 201310421979A CN 103470236 A CN103470236 A CN 103470236A
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Abstract
The invention relates to an automatic reinjection water heating production increasing process of a coal-bed gas well. The process comprises the following steps: A, performing precipitation and filtration treatment on produced liquid once or for more times to remove more than 95 percent of solid particles; B, heating the treated clear liquid through solar energy to increase the water temperature to 60-90 DEG C; C, injecting hot water into a shaft through a hot water reinjection pipeline, extending the hot water reinjection pipeline to the space below a coal bed through an oil sleeve annulus and increasing the temperature of the original shaft liquid to over 20 percent; D, circularly performing the steps. The process has the advantages that the heat energy is injected into the shaft liquid in a hot water injection mode and the brownian motion of coal dust in the shaft liquid is increased so as to increase the divergence of the coal dust in the water, favorably reduce the concentration of the coal dust and discharge the coal dust, besides a part of heat energy is transferred to a coal-bed gas storage layer of an immediate vicinity of a wellbore, so that the free energy of the coal-bed gas can be increased to increase the desorption rate of the coal-bed gas, and meanwhile the gas is expanded on heating, so that a seepage passage can be expanded, the permeability of a reservoir stratum is improved and the production increase of the coal-bed gas is realized.
Description
Technical field
This patent belongs to the yield-increasing technique technical field in coal bed gas well water pumping gas production process, relates in particular to a kind of coal bed gas well Automatic-heating re-injection water yield-increasing technique.
Background technology
Coal bed gas is commonly called as gas, is and the gas resource of coal association, symbiosis, and main component is CH
4.Coal bed gas is clean fuel and industrial chemicals, is also a kind of strong greenhouse gas, and its greenhouse effect are CO
221 times, " killer " of mine safety accidents especially.Develop coal bed gas resource, for adjusting China's energy resource structure, form coal bed gas novel energy industry, improve the Safety of Coal Mine Production condition, reducing gas accident and greenhouse gas emission, tool is of great significance.
At present, China's coal bed gas well yield is still lower, and yield-increasing technology is limited.About coal bed gas heating power yield-increasing technology, forefathers have the correlative study achievement, and China Patent Publication No.: CN1508387A provides " a kind of heating exploitation method of coal bed gas ", propose to inject heat energy in the heat mode of handling up to coalbed methane reservoir; China Patent Publication No.: CN102536184A, provide " a kind of method of exploiting coal-bed gas of burned coal bed ".But the heat heat injection mode of handling up easily causes coal seam to go out in a large number coal dust, impact row adopts production, burns the wayward combustion front in coal seam and affects the later stage coal mining, therefore applies limited.
Summary of the invention
This patent provides a kind of coal bed gas well Automatic-heating re-injection water yield-increasing technique for solving the technical problem existed in known technology, but this technique methane output is improved.
The technical scheme that this patent is taked for the technical problem existed in the solution known technology is:
A kind of coal bed gas well Automatic-heating re-injection water yield-increasing technique comprises the following steps:
Steps A: Produced Liquid is precipitated and filtration treatment, and precipitation and filtration treatment are carried out one or many, remove the solid particle more than 95%;
Step B: after processing, clear liquid, by solar energy heating, makes water temperature reach 60～90 ℃;
Step C: hot water injects pit shaft by hot water re-injection pipeline, and hot water re-injection pipeline is stretched into below coal seam by the oil jacket annular space, by former well liquid temperature, raises more than 20 ℃;
Step D: above step cycle is carried out.
This patent can also adopt following technical scheme:
Preferably, in steps A, the coal bed gas well Produced Liquid is connected with Produced Liquid flow and coal powder density indicating gage by the Produced Liquid pipeline, and controlled valve is controlled, and enters Produced Liquid solid particle settling tank and is precipitated;
Liquid after Produced Liquid solid particle settling tank precipitation process, through ball relief valve, flap valve, pump into Produced Liquid advanced treating tank by water pump, Produced Liquid advanced treating tank internal main will be comprised of metallic fiber sintered felt, required filter pressure provides by the pump pressure of controlling water pump, and after processing, liquid is detected by treatment fluid flow and coal powder density indicating gage;
When treatment fluid flow and coal powder density indicating gage are surveyed coal powder density value and Produced Liquid flow and coal powder density indicating gage and surveyed the ratio of coal powder density value and be less than or equal to 5%, after processing, clear liquid enters re-injection water heating tank through advancing the cold water pipeline; Otherwise, after processing liquid by Produced Liquid again the cycle for the treatment of pipeline enter water storage conditioning tank, then return and pump into Produced Liquid solid particle settling tank precipitation process, circular treatment is until the Produced Liquid coal powder density is up to standard.
Preferably, in step B, the clear liquid after processing enters re-injection water heating tank through advancing the cold water pipeline, by heating lower circulation line, cold water pumps into the plate solar collector heating, and hot water is by heating cocycle pipeline, through the temperature control sleeve pipe, the air valve that runs in, be back in re-injection water heating tank.
Further preferred, heating process also adopts the heating of electric auxiliary heating rod.
Preferably, in step C, after heating, hot water flows into hot water re-injection pipeline by Intelligent water valve, hot water re-injection pipeline is connected with flow velocity and temperature inductor, through sealing clamp head access well head, through evacuation system improvement centralizer used, by the oil jacket annular space, stretched to below coalbed methane reservoir.
Advantage and good effect that this patent has are:
After this patent has adopted above technical scheme, by injecting the hot water mode, to pit shaft liquid, inject heat energy, increase the Brownian movement of coal dust in pit shaft liquid, thereby increase the decentralization of coal dust in water, be beneficial to and reduce coal powder density and coal dust is discharged.In addition, partial heat energy is passed to the coalbed methane reservoir of near wellbore zone, can increase the free energy of coal bed gas, thereby increases the coal bed gas desorption rate, and simultaneously, when gases are heated, they expand, can enlarge seepage channel, improves reservoir permeability, realizes coal-bed-gas production-increase.This technological process is simplified, and can realize centralized control and management, the purified treatment that can be precipitated and filter Produced Liquid, and use clean energy resource solar energy to be heated, meet extensive efficient, the clean needs of developing of China's coal bed gas.After Automatic-heating re-injection water rising well liquid temperature, can more effectively reduce coal powder density and coal dust is discharged, simultaneously, can improve the permeability of near wellbore zone reservoir, realize coal-bed-gas production-increase.
The accompanying drawing explanation
Fig. 1 is the described basic structure schematic diagram of this patent technique.
In figure: 1, gas production pipe; 2, evacuation system; 3, Produced Liquid pipeline; 4, Produced Liquid flow and coal powder density indicating gage; 5, control valve; 6, Produced Liquid solid particle settling tank; 7, pressure maintaining valve; 8, overflow valve; 9, blowoff valve; 10, ball relief valve; 11, flap valve; 12, water pump; 13, Produced Liquid advanced treating tank; 14, metallic fiber sintered felt; 15, treatment fluid flow and coal powder density indicating gage; 16, advance the cold water pipeline; 17, re-injection water heating tank; 18, the lower circulation line of heating; 19, plate solar collector; 20, heating cocycle pipeline; 21, temperature control sleeve pipe; 22, outlet valve; 23, electric additional hot pin; 24, magnesium rod; 25, Intelligent water valve; 26, hot water re-injection pipeline; 27, flow velocity and temperature inductor; 28, sealing clamp head; 29, improve centralizer; 30, coalbed methane reservoir; 31, production fluid cycle for the treatment of pipeline again; 32, water storage conditioning tank; 33, T1, T2, T3, circuit and signal transmission line; 34, controller; 35, wireless signal transmission system; 36, computer control terminal.
The specific embodiment
For further understanding summary of the invention, the Characteristic of this patent, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1,
A kind of coal bed gas well Automatic-heating re-injection water yield-increasing technique comprises the following steps:
Steps A: Produced Liquid is precipitated and filtration treatment, and precipitation and filtration treatment are carried out one or many, remove the solid particle more than 95%;
Step B: after processing, clear liquid, by solar energy heating, makes water temperature reach 60～90 ℃;
Step C: hot water injects pit shaft by hot water re-injection pipeline, and hot water re-injection pipeline is stretched into below coal seam by the oil jacket annular space, by former well liquid temperature, raises more than 20 ℃;
Step D: above step cycle is carried out.
Particularly, this technique is moved by the following method:
The coal bed gas well Produced Liquid is connected with Produced Liquid flow and coal powder density indicating gage 4 by Produced Liquid pipeline 3, controlled valve 5 is controlled, through Produced Liquid solid particle settling tank 6 precipitations, liquid after processing is through ball relief valve 10, flap valve 11, pump into Produced Liquid advanced treating tank 13 by water pump 12, Produced Liquid advanced treating tank 13 internal mains will be comprised of metallic fiber sintered felt 14, required filter pressure provides by the pump pressure of controlling water pump 12, and after processing, liquid is detected by treatment fluid flow and coal powder density indicating gage 15.
When the ratio for the treatment of fluid flow and the coal powder density indicating gage 15 coal powder density value of surveying and Produced Liquid flow and the coal powder density indicating gage 4 coal powder density value of surveying is less than or equal to 5%, after processing, clear liquid enters re-injection water heating tank 17 through advancing cold water pipeline 16; Otherwise, after processing liquid by Produced Liquid again cycle for the treatment of pipeline 31 enter water storage conditioning tank 32, then return and pump into Produced Liquid solid particle settling tank 6 precipitation process, circular treatment is until the Produced Liquid coal powder density is up to standard.
Rear liquid up to standard enters re-injection water heating tank 17 by advancing cold water pipeline 16, by heating lower circulation line 18, cold water pumps into plate solar collector 19 heating, hot water is by heating cocycle pipeline 20, through temperature control sleeve pipe 21, the air valve 22 that runs in, be back in re-injection water heating tank 17, and heating process also can adopt electric auxiliary heating rod 23 heating as required.Described re-injection water heating tank 17 inner bottom parts are provided with the magnesium rod 24 that prevents incrustation scale.
Hot water flows into hot water re-injection pipeline 26 by Intelligent water valve 25, and hot water re-injection pipeline 26 is connected with flow velocity and temperature inductor 27, through sealing clamp head 28 access well heads, through evacuation system 2 improvement centralizer 29 used, by the oil jacket annular space, stretches to coalbed methane reservoir below 30.
Circuit in technique and signal transmission line 33, T1, T2, T3 access controller 34, then import computer control terminal 36 into through transmission of wireless signals and treatment system 35.Computer control terminal 36 can be carried out operated from a distance through transmission of wireless signals and 35 pairs of controllers for the treatment of system 34 by the control software of having worked out, thereby realizes the automation control of technological process.
This technological process is simplified, and can realize centralized control and management, the purified treatment that can be precipitated and filter Produced Liquid, and use clean energy resource solar energy to be heated, meet extensive efficient, the clean needs of developing of China's coal bed gas.After Automatic-heating re-injection water rising well liquid temperature, can more effectively reduce coal powder density and coal dust is discharged, simultaneously, can improve the permeability of near wellbore zone reservoir, realize coal-bed-gas production-increase.
Although the above is described the preferred embodiment of this patent by reference to the accompanying drawings; but this patent is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under the enlightenment of this patent; not breaking away from the scope situation that this patent aim and claim protect, can also make a lot of forms, within these all belong to the protection domain of this patent.
Claims (5)
1. a coal bed gas well Automatic-heating re-injection water yield-increasing technique is characterized in that: comprise the following steps:
Steps A: Produced Liquid is precipitated and filtration treatment, and precipitation and filtration treatment are carried out one or many, remove the solid particle more than 95%;
Step B: after processing, clear liquid, by solar energy heating, makes water temperature reach 60～90 ℃;
Step C: hot water injects pit shaft by hot water re-injection pipeline, and hot water re-injection pipeline is stretched into below coal seam by the oil jacket annular space, by former well liquid temperature, raises more than 20 ℃;
Step D: above step cycle is carried out.
2. coal bed gas well Automatic-heating re-injection water yield-increasing technique according to claim 1, it is characterized in that: in steps A, the coal bed gas well Produced Liquid is connected with Produced Liquid flow and coal powder density indicating gage by the Produced Liquid pipeline, and controlled valve is controlled, and enters Produced Liquid solid particle settling tank and is precipitated;
Liquid after Produced Liquid solid particle settling tank precipitation process, through ball relief valve, flap valve, pump into Produced Liquid advanced treating tank by water pump, Produced Liquid advanced treating tank internal main will be comprised of metallic fiber sintered felt, required filter pressure provides by the pump pressure of controlling water pump, and after processing, liquid is detected by treatment fluid flow and coal powder density indicating gage;
When treatment fluid flow and coal powder density indicating gage are surveyed coal powder density value and Produced Liquid flow and coal powder density indicating gage and surveyed the ratio of coal powder density value and be less than or equal to 5%, after processing, clear liquid enters re-injection water heating tank through advancing the cold water pipeline; Otherwise, after processing liquid by Produced Liquid again the cycle for the treatment of pipeline enter water storage conditioning tank, then return and pump into Produced Liquid solid particle settling tank precipitation process, circular treatment is until the Produced Liquid coal powder density is up to standard.
3. coal bed gas well Automatic-heating re-injection water yield-increasing technique according to claim 1, it is characterized in that: in step B, clear liquid after processing enters re-injection water heating tank through advancing the cold water pipeline, by heating lower circulation line, cold water pumps into the plate solar collector heating, and hot water is by heating cocycle pipeline, through the temperature control sleeve pipe, the air valve that runs in, be back in re-injection water heating tank.
4. coal bed gas well Automatic-heating re-injection water yield-increasing technique according to claim 3 is characterized in that: heating process also adopts the heating of electric auxiliary heating rod.
5. coal bed gas well Automatic-heating re-injection water yield-increasing technique according to claim 1, it is characterized in that: in step C, after heating, hot water flows into hot water re-injection pipeline by Intelligent water valve, hot water re-injection pipeline is connected with flow velocity and temperature inductor, through sealing clamp head access well head, through evacuation system improvement centralizer used, by the oil jacket annular space, stretched to below coalbed methane reservoir.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152270A (en) * | 2017-07-11 | 2017-09-12 | 山西锦联科贸有限公司 | A kind of full-automatic reinjected water（Additive）System and its application method |
| CN107701157A (en) * | 2017-09-30 | 2018-02-16 | 太原理工大学 | A kind of device and method of underground heat injection transformation coal seam physical characteristic |
| CN108843278A (en) * | 2018-07-25 | 2018-11-20 | 辽宁工程技术大学 | A kind of device and method of solar energy hot blast heating exploitation low permeability reservoir coal bed gas |
| CN109403924A (en) * | 2018-09-29 | 2019-03-01 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of single coal bed gas well injection hot water driving gang of wells method for increasing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083402A (en) * | 1975-04-02 | 1978-04-11 | Roza Ivanovna Antonova | Method of underground gasification of a coal bed |
| CN1508387A (en) * | 2002-12-13 | 2004-06-30 | 石油大学(北京) | Thermal recovery method for coal seam gas |
| CN1508389A (en) * | 2002-12-13 | 2004-06-30 | 石油大学(北京) | Thermal recovery method for coal seam gas |
| CN101418679A (en) * | 2008-11-12 | 2009-04-29 | 太原理工大学 | Method for pumping coalbed gas by heating coal bed |
| CN102635341A (en) * | 2012-04-13 | 2012-08-15 | 中联煤层气有限责任公司 | Circular and automatic water replenishing and drainage and production equipment for coal-bed gas well |
-
2013
- 2013-09-16 CN CN201310421979.5A patent/CN103470236B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083402A (en) * | 1975-04-02 | 1978-04-11 | Roza Ivanovna Antonova | Method of underground gasification of a coal bed |
| CN1508387A (en) * | 2002-12-13 | 2004-06-30 | 石油大学(北京) | Thermal recovery method for coal seam gas |
| CN1508389A (en) * | 2002-12-13 | 2004-06-30 | 石油大学(北京) | Thermal recovery method for coal seam gas |
| CN101418679A (en) * | 2008-11-12 | 2009-04-29 | 太原理工大学 | Method for pumping coalbed gas by heating coal bed |
| CN102635341A (en) * | 2012-04-13 | 2012-08-15 | 中联煤层气有限责任公司 | Circular and automatic water replenishing and drainage and production equipment for coal-bed gas well |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152270A (en) * | 2017-07-11 | 2017-09-12 | 山西锦联科贸有限公司 | A kind of full-automatic reinjected water（Additive）System and its application method |
| CN107152270B (en) * | 2017-07-11 | 2023-04-21 | 山西锦联建设科技有限公司 | Full-automatic reinjection water (additive) system and application method thereof |
| CN107701157A (en) * | 2017-09-30 | 2018-02-16 | 太原理工大学 | A kind of device and method of underground heat injection transformation coal seam physical characteristic |
| CN108843278A (en) * | 2018-07-25 | 2018-11-20 | 辽宁工程技术大学 | A kind of device and method of solar energy hot blast heating exploitation low permeability reservoir coal bed gas |
| CN108843278B (en) * | 2018-07-25 | 2020-05-19 | 辽宁工程技术大学 | Device and method for exploiting low-permeability reservoir coal bed gas through solar hot air heating |
| CN109403924A (en) * | 2018-09-29 | 2019-03-01 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of single coal bed gas well injection hot water driving gang of wells method for increasing |
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Effective date of registration: 20161221 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Dongcheng District, Chaoyangmen, North Street, No. 25, ocean Oil Mansion, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. Patentee before: CNOOC Energy Technology & Sevices-Supervision &Technology Co. |
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Granted publication date: 20160210 Termination date: 20170916 |