CN107462688A - A kind of pneumatic state separator of gas hydrates drilling fluid reclaimed water and method - Google Patents
A kind of pneumatic state separator of gas hydrates drilling fluid reclaimed water and method Download PDFInfo
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- CN107462688A CN107462688A CN201710634180.2A CN201710634180A CN107462688A CN 107462688 A CN107462688 A CN 107462688A CN 201710634180 A CN201710634180 A CN 201710634180A CN 107462688 A CN107462688 A CN 107462688A
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Abstract
A kind of pneumatic state separator of gas hydrates drilling fluid reclaimed water is disclosed, it can be with dissolubility methane in probing trend of work separation water body (drilling fluid), realize the contrasting detection with methane in air, response of the Accurate Determining gas hydrate dissociation to air and water body.It includes：Immersion pump, part flow arrangement, flowmeter, aqueous vapor balancer, discharge casing, condenser, gas detection analyzer；Immersion pump is put into finishing drilling drilling well, is opened immersion pump, is allowed water to enter aqueous vapor balancer, the valve of part flow arrangement is adjusted by flowmeter, caused water body discharges into discharge casing after separation, and gas detection analyzer is entered after the condensed device of the gas isolated.Additionally provide a kind of pneumatic state separation method of gas hydrates drilling fluid reclaimed water.
Description
Technical field
The present invention relates to the technical field of gas hydrate study, more particularly to a kind of gas hydrates drilling fluid
The pneumatic state separator of reclaimed water and method.
Background technology
Gas hydrates (Natural Gas Hydrate) are by water and small object gas molecule group under cryogenic high pressure
Into class ice, non-stoichiometry, cage type solid chemical compound, be commonly called as " combustible ice ", because gas componant therein is mainly methane, therefore
Also known as methane hydrate (Methane Hydrate).Gas hydrates energy density is high, in an ideal case, 1m3It is natural
Gas hydrate decomposable asymmetric choice net goes out 164m3Methane gas and 0.8m3Water.And gas hydrates reserves very abundant on the earth,
Natural-gas hydrate is distributed widely in the halmeic deposit and deep lake sediment of Permafrost Area, edge of continental shelf, is estimated
It is 2 × 10 to count the organic C storage in global gas hydrates16m3, the two of conventional fossil fuel total carbon has been verified equivalent to the whole world
More than times.Since the nineties in last century, developed country and some developing countries work out respective developmental research one after another in the world
Plan, gas hydrates are carried out with comprehensive, system investigation and research.
The geochemical investigation of gas hydrates for recognize the material compositions of gas hydrates, physico-chemical property and its
Source, output condition, Forming Mechanism, the regularity of distribution, environmental effect, RESERVE EVALUATION etc. have great importance, and are natural gases
One of most important means of hydrate detection.The geochemical investigation of gas hydrates is shown in the world, in natural gas
Hydrate enrichment region, due to the fluid that is discharged in gas hydrate synthesis or decomposable process and it is micro- ooze ease hydrocarbon can be in its overlying sea-bottom deposit
Hydrocarbon anomaly and other geochemical anomaly effects are formed in thing and its pore water and bottom seawater, these can be used for referring to extremely
Show the presence of gas hydrates.At present, Cl in natural gas hydrate stratum pore water-Mass concentration exception and SO4 2-Quality is dense
Degree gradient turns into two important geochemical indicatorses, and the content of dissolubility methane concentration then more intuitively indicates in water body
The presence of gas hydrates and decomposing changes.
Gas hydrates dissolving occurs in gas hydrates in itself to stablize but in unsaturated water body, course of dissolution with
NaCl、CaSO4·2H2O dissolves similar in water, causes mainly due to external cause (water being such as present) is unstable, inverse process is natural
Gas hydrate separates out in supersaturation.Hydrate dissolution degree increases and increased with temperature, increases with salinity and pressure and reduces, temperature
The influence spent to dissolving is more sensitive than influence of the pressure to dissolving.Decomposition of hydrate Cheng Shui and methane gas are that hydrate itself is unstable
Caused, decomposable process is similar to ice-out process, can occur in deposit or in water body, with water with the presence or absence of unrelated,
But water presence can accelerate decomposition of hydrate speed.Decomposition of hydrate is influenceed by temperature, pressure and methane content, and inverse process is first
Alkane gas and water crystallization are into hydrate.Methane gas occurs during water body is passed through in rising in bubble and hydrate interface
Of short duration hydrate re-forms phenomenon.Hydrate dissolution with decompose the process that to be two different, control the power of hydrate dissolution
Factor is material conversion, and control decomposition of hydrate is then hot-cast socket.Because hot-cast socket speed is more than material conversion speed,
Therefore decomposition of hydrate process is than course of dissolution much faster.
With natural gas hydrate exploration development process, the content of dissolubility methane concentration is to natural gas in stratum in water body
The instruction ever more important of hydrate existence.On the one hand, gas hydrates content can be assessed；On the other hand, may be used
Methane caused by gas hydrates is monitored in real time, in order to avoid disastrous influence is caused on environment.At present, permafrost region is consolidated
Tie in rock stratum during exploitation of gas hydrates, in the water of stratum the monitoring of gas hydrates changes of contents caused vast
The attention of person, but monitoring method is very few.
The content of the invention
The technology of the present invention solves problem：A kind of overcome the deficiencies in the prior art, there is provided gas hydrates drilling fluid
The pneumatic state separator of reclaimed water, its can with dissolubility methane in probing trend of work separation water body (drilling fluid), realize with
The contrasting detection of methane in air, response of the Accurate Determining gas hydrate dissociation to air and water body.
The present invention technical solution be：This pneumatic state separator of gas hydrates drilling fluid reclaimed water, it is wrapped
Include：Immersion pump, part flow arrangement, flowmeter, aqueous vapor balancer, discharge casing, condenser, gas detection analyzer；
Immersion pump is put into finishing drilling drilling well, is opened immersion pump, is allowed water to enter aqueous vapor balancer, is adjusted and shunted by flowmeter
The valve of device, caused water body discharges into discharge casing after separation, and gas is entered after the condensed device of the gas isolated and is tested and analyzed
Instrument.
A kind of pneumatic state separation method of gas hydrates drilling fluid reclaimed water is additionally provided, it comprises the following steps：
(1) underground water body installation immersion pump；
(2) after extracting water body in situ, aqueous vapor separation is carried out；
(3) water and dissolved gas are produced after separating；
(4) comparative analysis；
(5) by long-term synchronization, on-line real time monitoring, comprehensive analysis is carried out.
The present invention is utilized in drilling process, partial pressure of the methane in water body and air, is balanced by aqueous vapor partial pressure, uniformly put
Take a breath body, realize being successfully separated for dissolved methane and water body in water body, intake it is integrated with sampling determine, effectively improve and contain naturally
The real time on-line monitoring efficiency of methane content in the water body of gas hydrate stratum, and contrast inspection can be carried out with methane content in air
Survey, provided for the response of the content of dissolved methane, discussion gas hydrate dissociation to environment in Accurate Determining formation pore water
Powerful.
Brief description of the drawings
Fig. 1 is the structural representation according to the pneumatic state separator of gas hydrates drilling fluid reclaimed water of the present invention.
Fig. 2 is the flow chart according to the pneumatic state separation method of gas hydrates drilling fluid reclaimed water of the present invention.
Embodiment
As shown in figure 1, this pneumatic state separator of gas hydrates drilling fluid reclaimed water, it includes：Immersion pump 1, divide
Flow device 2, flowmeter 3, aqueous vapor balancer 4, discharge casing 5, condenser 6, gas detection analyzer 7；
Immersion pump is put into finishing drilling drilling well, is opened immersion pump, is allowed water to enter aqueous vapor balancer, is adjusted and shunted by flowmeter
The valve of device, caused water body discharges into discharge casing after separation, and gas is entered after the condensed device of the gas isolated and is tested and analyzed
Instrument.
In addition, the immersion pump is placed at least apart from shaft bottom 0.5m position.
In addition, the aqueous vapor balancer includes water inlet 41, spiral nozzle 42, silica-gel sphere 43, pressure balance mouth 44, aqueous vapor
Balancer main body.
As shown in Fig. 2 additionally providing a kind of pneumatic state separation method of gas hydrates drilling fluid reclaimed water, it includes following
Step：
(1) underground water body installation immersion pump；
(2) after extracting water body in situ, aqueous vapor separation is carried out；
(3) water and dissolved gas are produced after separating；
(4) comparative analysis；
(5) by long-term synchronization, on-line real time monitoring, comprehensive analysis is carried out.
The present invention is utilized in drilling process, partial pressure of the methane in water body and air, is balanced by aqueous vapor partial pressure, uniformly put
Take a breath body, realize being successfully separated for dissolved methane and water body in water body, intake it is integrated with sampling determine, effectively improve and contain naturally
The real time on-line monitoring efficiency of methane content in the water body of gas hydrate stratum, and contrast inspection can be carried out with methane content in air
Survey, provided for the response of the content of dissolved methane, discussion gas hydrate dissociation to environment in Accurate Determining formation pore water
Powerful.
In addition, in the step (1), immersion pump is put into finishing drilling drilling well, and depth is configured with actual demand, and deep diving
Pump is placed at least apart from shaft bottom 0.5m position.
In addition, in the step (2), immersion pump is opened, allows water to enter aqueous vapor balancer, then pass through flowmeter regulation point
Device valve is flowed, is adjusted into the flow of aqueous vapor balancer reclaimed water, it is ensured that current are not too large to be caused to fill up, while ensures water quilt
That beats dissipates enough；Regulation aqueous vapor balancer delivery port makes the water in inlet and outlet aqueous vapor balancer consistent.
In addition, in the step (3), caused water body, discharges into discharge casing after separation；After the condensed device of gas isolated
Into gas detection analyzer.
In addition, in the step (4), the methane in the solution gas and lower atmosphere isolated, carbon dioxide component are entered
After row is dried, online real time contrast's analysis is carried out using laser detecting method.
In addition, in the step (5), with reference to prolonged contrastive detection, methane component content in gas is analyzed, inquires into day
Right gas hydrate decomposes the content of generation methane gas and on influence caused by environment.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not made to the present invention, it is every according to
Any simple modification, equivalent change and modification made according to the technical spirit of the present invention to above example, still belong to the present invention
The protection domain of technical scheme.
Claims (9)
- A kind of 1. pneumatic state separator of gas hydrates drilling fluid reclaimed water, it is characterised in that：It includes：Immersion pump (1), divide Flow device (2), flowmeter (3), aqueous vapor balancer (4), discharge casing (5), condenser (6), gas detection analyzer (7)；Immersion pump is put into finishing drilling drilling well, is opened immersion pump, is allowed water to enter aqueous vapor balancer, part flow arrangement is adjusted by flowmeter Valve, caused water body discharges into discharge casing after separation, and gas detection analyzer is entered after the condensed device of the gas isolated.
- 2. the pneumatic state separator of gas hydrates drilling fluid reclaimed water according to claim 1, it is characterised in that：It is described Immersion pump is placed at least apart from shaft bottom 0.5m position.
- 3. the pneumatic state separator of gas hydrates drilling fluid reclaimed water according to claim 2, it is characterised in that：It is described Aqueous vapor balancer (4) includes water inlet (41), spiral nozzle (42), silica-gel sphere (43), pressure balance mouth (44), aqueous vapor balancer Main body.
- A kind of 4. pneumatic state separation method of gas hydrates drilling fluid reclaimed water, it is characterised in that：It comprises the following steps：(1) underground water body installation immersion pump；(2) after extracting water body in situ, aqueous vapor separation is carried out；(3) water and dissolved gas are produced after separating；(4) comparative analysis；(5) by long-term synchronization, on-line real time monitoring, comprehensive analysis is carried out.
- 5. the pneumatic state separation method of gas hydrates drilling fluid reclaimed water according to claim 4, it is characterised in that：It is described In step (1), immersion pump is put into finishing drilling drilling well, and depth is configured with actual demand, and immersion pump is placed at least apart from well Bottom 0.5m position.
- 6. the pneumatic state separation method of gas hydrates drilling fluid reclaimed water according to claim 5, it is characterised in that：It is described In step (2), open immersion pump, allow water to enter aqueous vapor balancer, then by flowmeter regulation part flow arrangement valve, adjust into Enter the flow of aqueous vapor balancer reclaimed water, it is ensured that current are not too large to be caused to fill up, while ensures that water is beaten scattered enough；Adjust water Gas balancer delivery port makes the water in inlet and outlet aqueous vapor balancer consistent.
- 7. the pneumatic state separation method of gas hydrates drilling fluid reclaimed water according to claim 6, it is characterised in that：It is described In step (3), caused water body, discharges into discharge casing after separation；Enter gas after the condensed device of gas isolated to test and analyze Instrument.
- 8. the pneumatic state separation method of gas hydrates drilling fluid reclaimed water according to claim 7, it is characterised in that：It is described In step (4), after the methane in the solution gas and lower atmosphere isolated, carbon dioxide component are dried, laser is utilized Detection method carries out online real time contrast's analysis.
- 9. the pneumatic state separation method of gas hydrates drilling fluid reclaimed water according to claim 8, it is characterised in that：It is described In step (5), with reference to prolonged contrastive detection, methane component content in gas is analyzed, inquires into gas hydrate dissociation production Give birth to the content of methane gas and on influence caused by environment.
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| CN201710634180.2A CN107462688B (en) | 2017-07-29 | 2017-07-29 | Aqueous vapor Dynamic Separation device and method in a kind of gas hydrates drilling fluid |
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| CN201710634180.2A CN107462688B (en) | 2017-07-29 | 2017-07-29 | Aqueous vapor Dynamic Separation device and method in a kind of gas hydrates drilling fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109443894A (en) * | 2018-12-29 | 2019-03-08 | 中国地质调查局油气资源调查中心 | A kind of water air interface methane and carbon dioxide on-line monitoring system and method |
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| CN102213090A (en) * | 2011-06-03 | 2011-10-12 | 中国科学院广州能源研究所 | Method and device for exploiting natural gas hydrate in permafrost region |
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| US3916993A (en) * | 1974-06-24 | 1975-11-04 | Atlantic Richfield Co | Method of producing natural gas from a subterranean formation |
| CA2633746C (en) * | 2005-12-20 | 2014-04-08 | Schlumberger Canada Limited | Method and system for development of hydrocarbon bearing formations including depressurization of gas hydrates |
| JP2011084896A (en) * | 2009-10-14 | 2011-04-28 | Shimizu Corp | Production device of methane gas from methane hydrate and production process of methane gas from methane hydrate by use of the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109443894A (en) * | 2018-12-29 | 2019-03-08 | 中国地质调查局油气资源调查中心 | A kind of water air interface methane and carbon dioxide on-line monitoring system and method |
| CN109443894B (en) * | 2018-12-29 | 2021-01-05 | 中国地质调查局油气资源调查中心 | Water-gas interface methane and carbon dioxide online monitoring system and method |
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| CN107462688B (en) | 2018-10-30 |
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Address after: 100083 Beijing Olympic Building, 267 North Fourth Ring Road, Haidian District, Beijing Co-patentee after: Beijing thinking Technology Co., Ltd. Patentee after: China Geological Survey Oil Gas Resource Survey Center Address before: 100029 East Courtyard Building No. 10, Xiaoguan Dongli, Outside Anding Gate, Dongcheng District, Beijing Co-patentee before: Beijing thinking Technology Co., Ltd. Patentee before: China Geological Survey Oil Gas Resource Survey Center |