CN109458159A - A kind of thermo-electric generation heat shock method exploitation sea area hydrate system and method - Google Patents
A kind of thermo-electric generation heat shock method exploitation sea area hydrate system and method Download PDFInfo
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- CN109458159A CN109458159A CN201811641277.7A CN201811641277A CN109458159A CN 109458159 A CN109458159 A CN 109458159A CN 201811641277 A CN201811641277 A CN 201811641277A CN 109458159 A CN109458159 A CN 109458159A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
Abstract
The invention discloses a kind of thermo-electric generation heat shock methods to exploit sea area hydrate system and method, which includes multiple producing wells, heated well and temperature difference electricity generation device；Multiple producing wells are centered on heated well, the periphery of heated well is set, the bottom in heated well geothermal reservoirs interval is arranged in temperature difference hot end in temperature difference electricity generation device, electrical heating elements group is located in heated well hydrate interval, the thermo-electric generation cold end setting is connected in series in sea water layer, temperature difference hot end, electrical heating elements group, thermo-electric generation cold end by high temperature resistant wire.This method is to be heated using aforementioned system to hydrate reservoir, the natural gas for entering producing well and water is extracted out, and carry out gas-liquid separation, by the natural gas transportation separated to gas gathering station.The system cleverly utilizes the waters temperature difference, thermoelectric generation is combined with heat shock method exploitation Hydrate Technology, it is small to implement technical difficulty for smart structural design, but exploitation effect is very good.
Description
Technical field
It the present invention relates to the use of the technology of underground heat and ocean temperature difference extracting hydrate on bottom of sea, and in particular to a kind of temperature difference
The heat shock method that generates electricity exploits sea area hydrate system and method.
Background technique
Gas hydrates are to be distributed in Continental Area by natural gas molecule and the molecular ice-like crystalline compounds of moisture
Halmeic deposit or permafrost in.Carbon dioxide and water are only generated after hydrate burning, is a kind of with development prospect
Clean energy resource also corresponds to twice of all fossil fuel being currently known according to the energy that most conservative estimation wherein stores.
Up to the present, the methods that four kinds of main exploitation hydrates have been proposed in scholars: heat shock method, decompression method,
Inhibitor injection and carbon dioxide replacement method.Wherein heat shock method directly provides heat, hydrate endothermic decomposition to hydrate reservoir
Producing well shaft bottom is flowed to, heat shock method effect on environment is small, and the hydrate that can be suitable for a variety of ore occurrences is exploited.But it is exploiting
In the process, heat utilization ratio is lower, not only heats hydrate, while going back heating deposition object, porous gases and liquid, to cause
A large amount of losses of heat, energy utilization efficiency is low, and needs to consume the hot fluid of wide variety of conventional energy sources for heating injection.
In order to meet the ever-increasing energy demand in the world, geothermal energy receives the concern of countries in the world, and underground heat is a kind of
Up to the present, about 82 countries (area) directly utilize underground heat by cleaning, sustainability and the wide energy of development prospect
Geother-mal power generation can be used with 26 countries (area).
Zhujiangkou Basin is the maximum Mesozoic Cenozoic Sediment Basin of South China Sea, and geothermal gradient is in 3.5-4.0 DEG C, 100m
Between, belong to High-geotemperature basin, earth formation deep geothermal energy resources are abundant.The 4-6 month in 2007, China is in Zhujiang River Estuary In Northern South China Sea basin
Shenhu sea area is drilled, and is realized geologic prospecting work, is found hydrate layer, the month China 5-7 is in refreshing fox region within 2017
Hydrate pilot production is carried out, continuous-stable pilot production 60 days, adds up to produce gas 30.9 × 104m³.Therefore, Zhujiangkou Basin superficial part contains greatly
The hydrate resource of amount, and Deep Basin has geothermal energy resources abundant.
Therefore, it is badly in need of a kind of device and method, the method that can effectively exploit Zhujiang River Mouth Basin of South China Sea hydrate.
Summary of the invention
The first purpose of the invention is to provide a kind of thermo-electric generation heat shock methods to exploit sea area hydrate system, system master
Sea area, especially needle sea area basin, such as Zhujiangkou Basin are exploited for deep geothermal heat and ocean thermal energy conversion heat shock method.
A second object of the present invention is to provide a kind of method for exploiting sea area hydrate, this method can efficiently use pearl
The geothermal energy resources of Jiangkou Deep Basin, and can Efficient Development superficial part hydrate reservoir.
In order to realize first purpose of foregoing invention, The technical solution adopted by the invention is as follows: a kind of thermo-electric generation heat shock
Method exploits sea area hydrate system, including multiple producing wells, heated well and temperature difference electricity generation device；
Centered on heated well, the periphery of heated well is arranged in by heated well in the multiple producing well；
The structure of each producing well: including being mutually perpendicular to, and interconnected producing well net horizontal section and producing well vertical well
Section；
The top of the vertical well section of the producing well is pierced by sea level；
The producing well net horizontal section setting is in hydrate reservoir, and the pressure of producing well net horizontal section is stored up less than hydrate
Layer, multiple producing well perforations are set on producing well net horizontal section；
The heated well sequentially passes through impervious bed, hydrate layer and lower part rock stratum and reaches at the top of geothermal reservoir, and heated well includes
The impermeable interval of the heated well being sequentially communicated, heated well hydrate interval, heated well lower part rock stratum section and heated well geothermal reservoir
Section, multiple the first perforations of heated well are set on heated well hydrate interval, multiple heated wells are set on heated well geothermal reservoirs interval
Second perforation；
Temperature difference electricity generation device: including temperature difference hot end, electrical heating elements group, thermo-electric generation cold end and high temperature resistant wire；
The bottom in heated well geothermal reservoirs interval is arranged in the temperature difference hot end, and electrical heating elements group is located at heated well hydrate layer
In section, the thermo-electric generation cold end setting passes through resistance to height in sea water layer, temperature difference hot end, electrical heating elements group, thermo-electric generation cold end
Warm conducting wire is connected in series.
As optimization, the quantity of the producing well is six, and six producing wells are located at the six of equilateral hexagon
A vertex, heated well are located at the center of the equilateral hexagon.
As optimization, the bottom of sea water layer is arranged in the thermo-electric generation cold end.
As optimization, the temperature difference hot end and thermo-electric generation cold end use metal silication type thermoelectric material, cobalt base oxide
Thermoelectric material or PbTe base thermoelectricity material are made.
As optimization, the high temperature resistant wire selection resistivity small copper or aluminum conducting wire.
As optimization, the electrical heating elements group includes multiple heating elements parallel with one another.
In order to realize second purpose of foregoing invention, The technical solution adopted by the invention is as follows: a kind of exploitation sea area is hydrated
The method of object exploits sea area hydrate system using above-mentioned thermo-electric generation heat shock method, and stages of mining is as follows:
S1: producing well arrangement, in productive target region located production wells well pattern, using offshore drilling technology according to being pre-designed
Well track complete drilling well obtain multiple producing wells, multi-openings are beaten in producing well net horizontal section, by producing well net horizontal section
It is connected to hydrate layer, producing well net horizontal section keeps pressure to be lower than hydrate layer pressure 4-5MPa；
S2: heated well drilling well, in productive target region, the regional center that multiple producing wells are formed bores heated well, is bored using sea
Well technology successively drills impervious bed, hydrate layer and lower part rock stratum, finally reaches at the top of geothermal reservoir, in the wellbore setting of casing
And inject well cementing of cement and form heated well, and beat multiple the first perforations of heated well in heated well hydrate interval respectively, it will heat
Well is connected to hydrate layer, beats the second perforation of heated well in heated well geothermal reservoirs interval, will will be at the top of heated well and geothermal reservoir
Connection；
S3: the bottom in heated well geothermal reservoirs interval is arranged in installation temperature difference electricity generation device, temperature difference hot end, and electrical heating elements group is set
In heated well hydrate interval, thermo-electric generation cold end is arranged in sea water layer, the temperature difference hot end, electrical heating elements group, the temperature difference
The cold end that generates electricity is connected in series by high temperature resistant wire；
Hydrate absorbs heat and decomposes, and generates gaseous natural gas, due to pressure difference there are natural gases together with water flows
Enter producing well net horizontal section；
S4: the obtained natural gas of S3 and water are extracted out, then separated by gas-liquid separator, will be isolated by natural gas separation
Water return be injected into sea water layer, by the natural gas transportation separated to gas gathering station
Compared with prior art, the present invention at least has the advantages that
1, thermo-electric generation heat shock method provided by the invention exploits sea area hydrate system, the waters temperature difference is cleverly utilized, by the temperature difference
Generation technology is combined with heat shock method exploitation Hydrate Technology, smart structural design, and implementation technical difficulty is small, but exploitation effect
It is very good.
2, the method for exploitation sea area hydrate provided by the invention carries out hydrate exploitation using above system, can be effective
Using geothermal energy resources, the especially geothermal energy resources in Zhujiangkou Basin deep, and can Efficient Development superficial part hydrate reservoir.
3, since the temperature of geothermal reservoir and seawater can pass through for a long time thermo-electric generation with stable for extended periods of time,
Energy heats reservoir is converted electrical energy into again, therefore the method for the present invention has the advantages that sustainable, low energy consumption and environmental protection.
Detailed description of the invention
Fig. 1 is the structure principle chart that thermo-electric generation heat shock method exploits sea area hydrate system.
Fig. 2 is the electric appliance connection figure of temperature difference electricity generation device.
Fig. 3 is the arrangement figure of multiple producing wells and heated well.
It is marked in figure, the sea level 1-, 2- sea water layer, 3- impervious bed, 4- hydrate reservoir, the lower part 5- rock stratum, 6- underground heat
Reservoir, 7- thermo-electric generation hot end, 8- electric heating original part group, 9- hydrate, 10- perforation road, 11- producing well net horizontal section, 12- are raw
Produce the vertical well section of well, 13- thermo-electric generation cold end, 14- conducting wire, 15-20- horizontal production well, 21- heated well.
Specific embodiment
In order to make those skilled in the art that the present invention may be better understood.
Structure referring to Fig. 1 marine bottom is, from sea level successively include sea level 1 to the earth's core, it is sea water layer 2, impermeable
Layer 3, hydrate reservoir 4 and lower part rock stratum 5.
Embodiment 1, referring to Fig. 1-3, a kind of thermo-electric generation heat shock method exploitation sea area hydrate system, including multiple productions
Well, heated well 21 and temperature difference electricity generation device；
Centered on heated well 21, the periphery of heated well 21 is arranged in by heated well 21 in the multiple producing well.
When it is implemented, the quantity of the producing well is six, and six producing wells 15,16,17,18,19,20 are distinguished
Positioned at six vertex of equilateral hexagon, heated well 21 is located at the center of the equilateral hexagon.The two neighboring producing well hangs down
The distance between 12 center line of straight well section is 500m.Equilateral hexagon i.e. where six producing wells 15,16,17,18,19,20
Side length be 500m.The distance of center line to 21 center line of heated well of the vertical well section 12 of described any one producing well is
500m.I.e. any one vertex of equilateral hexagon to central point distance be 500m.
The structure of each producing well: including being mutually perpendicular to, and interconnected producing well net horizontal section 11 and producing well
Vertical well section 12；
The top of the vertical well section 12 of the producing well is pierced by sea level 1；
The setting of producing well net horizontal section 11 is in hydrate reservoir 4, and the pressure of producing well net horizontal section 11 is less than hydration
Multiple producing well perforations 10 are arranged on producing well net horizontal section 11 in object reservoir 4；The producing well net horizontal section 11 is in hydrate
Reservoir 4, length 300m have multi-openings 10 on producing well net horizontal section 11, and multi-openings 10 are along producing well net horizontal section
Producing well is connected to by 11 circumferential settings, perforation 10 with hydrate reservoir 4, and producing well keeps bottom pressure to be lower than hydrate reservoir 4
Pressure 4-5MPa forms pressure pressure difference, to guarantee that the natural-gas 9 decomposed flows to producing well by perforation 10.
The heated well 21 sequentially passes through impervious bed 3, hydrate layer 4 and lower part rock stratum 5 and reaches 6 at the top of geothermal reservoir,
Heated well 21 includes the impermeable interval of heated well being sequentially communicated, heated well hydrate interval, heated well lower part rock stratum section and adds
Hot well geothermal reservoirs interval, the top of heated well 21 are located at impervious bed 3, and the bottom of heated well 21 is located at 6 at the top of geothermal reservoir, adds
Multiple the first perforations of heated well are set on hot well hydrate interval, and multiple the first perforations of heated well are along heated well 21 along heating well water
It closes nitride layer section to be circumferentially arranged, effect is to be connected to hydrate reservoir 4 with 21 inner cavity of heated well, is conducive to heat to hydrate reservoir
Multiple the second perforations of heated well are arranged on heated well geothermal reservoirs interval in 4 transmitting, and multiple the second perforations of heated well are along heated well 21
Along the circumferential direction setting of heated well geothermal reservoirs interval, effect is to be connected to geothermal reservoir 6 with 21 inner cavity of heated well, is conducive to heat friendship
It changes.
Temperature difference electricity generation device: including temperature difference hot end 7, electrical heating elements group 8, thermo-electric generation cold end 13 and high temperature resistant wire
14。
The bottom in heated well geothermal reservoirs interval is arranged in the temperature difference hot end 7, that is, is located at 6 electrical heating elements of geothermal reservoir
Group 8 is located in heated well hydrate interval, and the setting of thermo-electric generation cold end 13 is in sea water layer 2, temperature difference hot end 7, electric heating member
Part group 8, thermo-electric generation cold end 13 are connected in series by high temperature resistant wire 14.
As an improvement, the bottom of sea water layer 2 is arranged in thermo-electric generation cold end 13.2 lower curtate of sea water layer is apart from sea level 11200
Rice, temperature are 2-5 DEG C, and geothermal reservoir 6 is apart from 14000 meters of sea level, and temperature is at 100 DEG C or more, therefore, thermo-electric generation cold end 13
There is the huge temperature difference, thermo-electric generation hot end 7, thermo-electric generation cold end 13, conducting wire 14 and electric heating between thermo-electric generation hot end 7
The closed circuit that element group 8 is constituted will generate electric current, and the work of electrical heating elements group 8 converts electrical energy into the storage of energy heats hydrate
Layer 4.As an improvement, the electrical heating elements group 8 includes that multiple heating elements parallel with one another increase thermal power, heating element can
Be arranged circumferentially in 21 inner wall of heated well close to the inner wall of heated well 21, such heated well hydrate interval it is heated more
Add uniformly.
Temperature difference hot end 7 and thermo-electric generation cold end 13 using metal silication type thermoelectric material, cobalt base oxide thermoelectric material or
PbTe base thermoelectricity material is made.Temperature difference hot end 7 and thermo-electric generation cold end 13 use metal silication type thermoelectric material, cobalt base oxide
Thermoelectric material or PbTe base thermoelectricity material are made, the novel hot spot material system that the ZT thermoelectric material dimensionless figure of merit can also be used high
At.It should be noted that the structure and manufacture craft in thermo-electric generation cold end 13 and thermo-electric generation hot end 7 are the prior arts, nor
Inventive point of the invention, an important inventive point of the invention are to introduce temperature difference electricity generation device into the exploitation of sea area hydrate.
Embodiment 2, a method of exploitation sea area hydrate exploits sea using the thermo-electric generation heat shock method in embodiment 1
Domain hydrate system, stages of mining are as follows:
S1: producing well arrangement, in productive target region located production wells well pattern, using offshore drilling technology according to being pre-designed
Well track complete drilling well obtain multiple producing wells, beat multi-openings 10 in producing well net horizontal section 11, by producing well level
Well section 11 is connected to hydrate layer 4, and producing well net horizontal section 11 keeps pressure to be lower than 4 pressure 4-5MPa of hydrate layer；
S2: heated well drilling well, in productive target region, the regional center that multiple producing wells are formed bores heated well 21, utilizes sea
Drilling technology successively drills impervious bed 3, hydrate layer 4 and lower part rock stratum 5, finally reaches 6 at the top of geothermal reservoir, in the wellbore
Setting of casing simultaneously injects well cementing of cement formation heated well 21, and beats multiple heated wells first in heated well hydrate interval respectively and penetrate
Heated well 21 is connected to by hole with hydrate layer 4, beats the second perforation of heated well in heated well geothermal reservoirs interval, will be by heated well 21
It is connected to at the top of geothermal reservoir 6；
S3: installation temperature difference electricity generation device, the bottom in heated well geothermal reservoirs interval, electrical heating elements group 8 is arranged in temperature difference hot end 7
It is located in heated well hydrate interval, thermo-electric generation cold end 13 is arranged in sea water layer 2, the temperature difference hot end 7, electrical heating elements group
8, thermo-electric generation cold end 13 is connected in series by high temperature resistant wire 14；
Electrical heating elements group 8 work cause 4 temperature of hydrate reservoir increase, destroy hydrate it is original balance each other state decomposition at
Methane free gas, i.e. hydrate absorb heat decompose, generate gaseous natural gas 9, due to pressure difference there are natural gases 9
Producing well net horizontal section 11 is flowed into together with water.
S4: natural gas separation extracts the obtained natural gas 9 of S3 and water out, then separated by gas-liquid separator, will
The water isolated is returned and is injected into sea water layer 2, by the natural gas transportation separated to gas gathering station.
This method is sustainable one kind, low energy consumption, the recovery percent of reserves for improving hydrate and reduces hydrate cost of winning
Hydrate recovery method.
The method of the present invention is mainly used in the basins such as South Sea the mouth of the Zhujiang River, can efficiently use the underground heat in Zhujiangkou Basin deep
Resource, and can Efficient Development superficial part hydrate reservoir.
It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that；It is still
It is possible to modify the technical solutions described in the foregoing embodiments, or some or all of the technical features is carried out
Equivalent replacement；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (7)
1. a kind of thermo-electric generation heat shock method exploits sea area hydrate system, it is characterised in that: including multiple producing wells, heated well
(21) and temperature difference electricity generation device；
The multiple producing well centered on heated well (21), is arranged on the periphery of heated well (21) by heated well (21)；
The structure of each producing well: including being mutually perpendicular to, and interconnected producing well net horizontal section (11) and producing well hangs down
Straight well section (12)；
The top of the vertical well section (12) of the producing well is pierced by sea level (1)；
The producing well net horizontal section (11) is arranged in hydrate reservoir (4), and the pressure of producing well net horizontal section (11) is small
In multiple producing well perforations (10) are arranged on hydrate reservoir (4), producing well net horizontal section (11)；
The heated well (21) sequentially passes through impervious bed (3), hydrate layer (4) and lower part rock stratum (5), reaches geothermal reservoir top
Portion (6), heated well (21) include the impermeable interval of heated well, heated well hydrate interval, heated well lower part rock being sequentially communicated
Multiple the first perforations of heated well, heated well geothermal reservoirs are arranged on heated well hydrate interval in interval and heated well geothermal reservoirs interval
Multiple the second perforations of heated well are set on interval；
Temperature difference electricity generation device: including temperature difference hot end (7), electrical heating elements group (8), thermo-electric generation cold end (13) and high temperature resistant wire
(14)；
The bottom in heated well geothermal reservoirs interval is arranged in the temperature difference hot end (7), and electrical heating elements group (8) is located at heating well water
It closes in nitride layer section, thermo-electric generation cold end (13) setting is in sea water layer (2), temperature difference hot end (7), electrical heating elements group (8), temperature
Difference power generation cold end (13) is connected in series by high temperature resistant wire (14).
2. thermo-electric generation heat shock method as described in claim 1 exploits sea area hydrate system, it is characterised in that: the producing well
Quantity be six, and six producing wells (15,16,17,18,19,20) are located at six vertex of equilateral hexagon, add
Hot well (21) is located at the center of the equilateral hexagon.
3. thermo-electric generation heat shock method as claimed in claim 2 exploits sea area hydrate system, it is characterised in that: the temperature difference hair
Bottom of electric cold end (13) setting in sea water layer (2).
4. thermo-electric generation heat shock method as claimed in claim 2 exploits sea area hydrate system, it is characterised in that: the temperature difference
Hot end (7) and thermo-electric generation cold end (13) use metal silication type thermoelectric material, cobalt base oxide thermoelectric material or PbTe base heat
Electric material is made.
5. thermo-electric generation heat shock method as claimed in claim 2 exploits sea area hydrate system, it is characterised in that: the high temperature resistant
The copper or aluminum conducting wire (14) that conducting wire (14) selects resistivity small.
6. thermo-electric generation heat shock method as claimed in claim 2 exploits sea area hydrate system, it is characterised in that: the electric heating
Element group (8) includes multiple heating elements parallel with one another.
7. a kind of method for exploiting sea area hydrate, which is characterized in that use thermo-electric generation heat shock method as described in claim 1
Sea area hydrate system is exploited, stages of mining is as follows:
S1: producing well arrangement, in productive target region located production wells well pattern, using offshore drilling technology according to being pre-designed
Well track complete drilling well obtain multiple producing wells, multi-openings (10) are beaten in producing well net horizontal section (11), by producing well
Net horizontal section (11) is connected to hydrate layer (4), and producing well net horizontal section (11) keeps pressure to be lower than hydrate layer (4) pressure 4-
5MPa；
S2: heated well drilling well, in productive target region, the regional center that multiple producing wells are formed bores heated well (21), utilizes sea
Upper drilling technology successively drills impervious bed (3), hydrate layer (4) and lower part rock stratum (5), finally reaches at the top of geothermal reservoir
(6), it setting of casing and injects well cementing of cement in the wellbore and forms heated well (21), and beat respectively in heated well hydrate interval multiple
Heated well (21) is connected to hydrate layer (4), beats heated well second in heated well geothermal reservoirs interval and penetrate by the first perforation of heated well
Heated well (21) will be connected to by hole with (6) at the top of geothermal reservoir；
S3: installation temperature difference electricity generation device, the bottom in heated well geothermal reservoirs interval, electrical heating elements are arranged in temperature difference hot end (7)
Group (8) is located in heated well hydrate interval, thermo-electric generation cold end (13) setting in sea water layer (2), the temperature difference hot end (7),
Electrical heating elements group (8), thermo-electric generation cold end (13) are connected in series by high temperature resistant wire (14)；
Hydrate absorb heat decompose, generate gaseous natural gas (9), due to pressure difference there are natural gas (9) and water
Flow into producing well net horizontal section (11) together；
S4: natural gas separation, natural gas (9) and the water extraction that S3 is obtained, then separated by gas-liquid separator, it will separate
Water out, which returns, to be injected into sea water layer (2), by the natural gas transportation separated to gas gathering station.
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| CN112160732A (en) * | 2020-10-24 | 2021-01-01 | 东北石油大学 | Method for mining diagenetic hydrate and gas-water separator |
| CN113224979A (en) * | 2021-06-16 | 2021-08-06 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Geothermal/seawater semiconductor temperature difference power generation system and method |
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