CN110259424A - A kind of method and apparatus of in-situ retorting oil shale - Google Patents
A kind of method and apparatus of in-situ retorting oil shale Download PDFInfo
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- CN110259424A CN110259424A CN201910644545.9A CN201910644545A CN110259424A CN 110259424 A CN110259424 A CN 110259424A CN 201910644545 A CN201910644545 A CN 201910644545A CN 110259424 A CN110259424 A CN 110259424A
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- coiled tubing
- combustion reaction
- fuel
- oil shale
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- 239000004058 oil shale Substances 0.000 title claims abstract description 143
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000002485 combustion reaction Methods 0.000 claims abstract description 141
- 239000000446 fuel Substances 0.000 claims abstract description 110
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000001301 oxygen Substances 0.000 claims abstract description 77
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 77
- 238000004519 manufacturing process Methods 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 89
- 238000000926 separation method Methods 0.000 claims description 52
- 238000010438 heat treatment Methods 0.000 claims description 45
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- 230000001105 regulatory effect Effects 0.000 claims description 2
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- 238000005336 cracking Methods 0.000 description 13
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- 238000005516 engineering process Methods 0.000 description 7
- 239000000284 extract Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 238000000197 pyrolysis Methods 0.000 description 6
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- 230000006641 stabilisation Effects 0.000 description 4
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
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- 239000003208 petroleum Substances 0.000 description 2
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- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/241—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection combined with solution mining of non-hydrocarbon minerals, e.g. solvent pyrolysis of oil shale
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/243—Combustion in situ
- E21B43/247—Combustion in situ in association with fracturing processes or crevice forming processes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention provides a kind of method and apparatus of in-situ retorting oil shale.The device include: combustion reaction equipment, impulse jet nozzle, preheating equipment, coiled tubing inner tube, coiled tubing outer tube, production casing, supply equipment, for fuel apparatus, oxygen supply equipment and pump group；Wherein, oxygen supply equipment is connected to coiled tubing outer tube；Supply equipment is connected to coiled tubing inner tube for fuel apparatus；The bottom of combustion reaction equipment is provided with impulse jet nozzle；Coiled tubing inner tube, coiled tubing outer tube, production casing are connected to combustion reaction equipment.The present invention also provides the methods for the in-situ retorting oil shale completed using above-mentioned apparatus.The cost of winning of the method and device of in-situ retorting oil shale provided by the invention is lower, production efficiency is higher.
Description
Technical field
The present invention relates to a kind of recovery method and device more particularly to a kind of method and apparatus of in-situ retorting oil shale,
Belong to oil-gas mining technical field.
Background technique
Currently, global economy continues to develop, and the demand to the energy also increasingly increases, with the progress of exploitation, conventional gas and oil
Reserves constantly decline, and exploit difficulty and constantly increase, and therefore, we are badly in need of finding the substitute of the conventional gas and oil energy.Oil shale
(oil shale, oil shale are from the mud accumulation of the unicellular lower eukaryotes such as water plant algae corruption, are that one kind is contained
Amount very abundant but the mineral resources not almost being well utilised also, according to depositional environment, oil shale is segmented into terrestrial facies, lake
Mutually and three kinds of basic cause types such as marine facies) be a kind of unconventional petroleum resources, be considered to be traditional energy important supplement and
Instead of the energy, extensive concern both domestic and external is gradually caused.China's oil shale reserves are abundant, explored oil shale reserves there are about
47600000000 tons, it is equivalent to the half of conventional oil resource.And reserve distribution is more concentrated, and the areas such as Jilin Province are mainly distributed on.So
And the cracking conversion of oil shale and production technique are the principal elements for influencing oil shale and developing and utilizing.Therefore, understand oil shale
Related production technique and current situation be necessary.
It currently, is mainly that ground destructive distillation oil refining and ground in-situ are exploited for the method Land use systems of opening of oil shale.Ground is dry
The method of evaporating, which refers to, digs up oil shale mine, and transport is heated to 500 DEG C to 600 DEG C into specific gas retort, and destructive distillation goes out " artificial stone
Oil ".China's oil shale destructive distillation industry is with a long history, but ground cracking process not only needs great lot of water resources, but also right
Environment has biggish pollution, it is difficult to extensive development.To push the large-scale Green Development of oil shale to utilize, international major petroleum
Company strengthens the research of oil shale underground in situ destructive distillation exploitation, and forms a variety of oil shale in-situ production techniques.Oil shale
In-situ retorting no longer exploit oil shale ore, but by ground in-situ heating oil shale, by organic matter (kerogen) heat
It is cracked into " oil " and " fuel gas ", then by a kind of oil gas product exploitation of cracking to recovery method on stratum.Because of original position
Exploitation have the advantages that earth's surface excavate small, waste discharge it is few and pollute it is lower, so in-situ retorting is increasingly becoming oil shale
Exploit most promising technology.
Currently, oil shale in-situ production technique is divided into two classes according to principle of heating both at home and abroad: situ combustion heating exploitation and
Physical heating production technique in situ.Combustion heating production technique will first dig up 1/5th oil shale layer bottom plate and on bottom plate
The oil shale of side carries out pressure break or explosion, and hot-air is then passed through target formation together with fuel gas, and burning occurs to add
Thermal target rock stratum.But due to destroying destination layer bottom plate during excavating stratum, while can also polluted underground water.And
And combustion process is not easy to control, easy most of organic matter by oil shale is consumed.Therefore, present in-situ retorting is more
Tend to exploit oil shale with the mode of physical heating in situ.Physical heating production technique in situ can be divided into three classes again: conduction
Heating technique, radiation heating techniques and fluid convection heating technique.In addition, there are also Israel AST companies to propose that topochemistry is anti-
Answer the technology etc. of thermal cracking.
Conduction heating techniques first freeze target sillar using freezing wall, prevent from polluting mainly before construction.It is beaten in construction
Active well places electric heater to target formation and in active well, then begins to warm up target formation.When target payzone is added
When heat is to 600-700K, organic matter starts to convert inside oil shale, then with traditional oil-gas mining mode by oil gas product
It adopts to ground.The advantages of electrical conduction heats is the reduction of environmental pollution and heating method is flexible, easily controllable.The disadvantage is that energy
Utilization rate is lower, and heating speed is slow.
Radiation heating techniques combine two technical characterstics such as radio frequency heating and supercritical fluid extraction.In implementation process,
Target formation is arrived in well-digging first, then the tripping in RF sensor in well, then opens sensor and heats stratum, promotes in oil shale
The organic matter in portion converts, and is then adopted to target interval injection supercritical carbon dioxide to extract oil gas product to ground.Spoke
The advantages of penetrating heating is that heating speed is fast, and energy utilization efficiency is high.The disadvantage is that radiothermics is difficult to realize in underground, sensing
Use of the device in well there is a problem.And radiothermics means higher cost.
The working principle of Convective Heating technology is first drilling well to target formation, then forms seam by way of more well pressure breaks
Net penetrates through entire heating region, finally produces to hydrocarbon gas (or high temperature carbon dioxide) the heating target of heat injection well injection high temperature
Layer and by the oil gas product of generation from producing well output.It is opened in situ in addition, Jilin University also proposed using neighbour's circle vapor
The technology of oil recovery shale.The technology is utilized neighbour's circle water and preferably extracts and solvability, and to the less pollution of environment.
The advantages of heat convection technology is that heating speed is fast, can make full use of carbonization gas.The disadvantage is that be initially formed seam net before exploitation.And
And relative to neighbour's circle water, supercritical water is stronger in the extractability of oil shale, and the product polarity converted is higher.
Additionally it is proposed that the means of topochemical reaction exploitation oil shale.The principle of the technology is in target interval
Then high temperature air is injected formation at target locations by well-digging, promote organic matter inside oil shale that topochemical reaction occurs.With reaction
Progress, a reaction member body is continuous to expand in formation at target locations.In initial reaction stage, kerogen major cleavage is converted into
Pitch, with the progress in reaction time, pitch is further converted to shale oil and some hydrocarbon gas.But this method is anti-
It answers region smaller, and needs to be repeatedly injected, the regulation of injection rate is complicated, if injection rate is improper, can consume a large amount of oil gas
Product.
From the foregoing, it will be observed that there is presently no the heavy industrializations that a kind of cost-effective method can be used to realize oil shale
In-situ retorting.
Summary of the invention
In order to solve the above-mentioned technical problem, it is former using supercritical pulse heating power jet stream that the purpose of the present invention is to provide a kind of
The in-situ retorting of oil shale efficiently, economic may be implemented in the method and device of position exploitation oil shale, method and device of the invention.
In order to achieve the above technical purposes, the present invention provides a kind of device of in-situ retorting oil shale, which includes:
Combustion reaction equipment, impulse jet nozzle, preheating equipment, coiled tubing inner tube, coiled tubing outer tube, production casing, supply equipment,
For fuel apparatus, oxygen supply equipment and pump group；
Wherein, oxygen supply equipment is connected to coiled tubing outer tube；
Supply equipment is connected to coiled tubing inner tube with for fuel apparatus；
Combustion reaction equipment is set in oil shale formation, and the bottom of combustion reaction equipment is provided with impulse jet nozzle；
Coiled tubing inner tube, coiled tubing outer tube, production casing are connected to combustion reaction equipment.
The device of in-situ retorting oil shale of the invention includes raw material offer portion.The raw material offer portion include supply equipment,
For fuel apparatus, oxygen supply equipment, preheating equipment and pump group.Wherein, raw material offer portion is used to provide raw material for combustion reaction.
Specifically, supply equipment is used to supply water in recovery process for combustion reaction, to form supercritical water jet, simultaneously
Make up reservoir pressure deficit.
Specifically, it is used to supply fuel for combustion reaction to realize igniting for fuel apparatus.
Specifically, oxygen supply equipment is for providing oxygen-containing gas needed for combustion process.
Specifically, preheating equipment is used for before combustion reaction equipment is not lighted a fire to fuel aqueous mixtures and oxygen-containing gas
It is preheated.
In a specific embodiment of the invention, supply equipment is connected to coiled tubing inner tube；For fuel apparatus and company
Continuous oil pipe inner tube connection；Oxygen supply equipment is connected to coiled tubing outer tube.
In a specific embodiment of the invention, preheating equipment is respectively fuel water pre-heater and gas preheater
Device；Wherein, one end of fuel water pre-heater is connected to supply equipment and for fuel apparatus respectively, in the other end and coiled tubing
Pipe connection.One end of gas preheater is connected to oxygen supply equipment, and the other end is connected to coiled tubing outer tube.
The device of in-situ retorting oil shale of the invention includes combustion reaction equipment.Wherein, combustion reaction equipment is for being
Combustion reaction provides environment.
In a specific embodiment of the invention, combustion reaction equipment includes combustion reaction chamber, is located at combustion reaction chamber
Fuel water inlet, the oxygen-containing gas entrance at top, and, the nozzle pipe positioned at combustion reaction bottom of chamber portion.
In a specific embodiment of the invention, impulse jet nozzle is connected to the exit of nozzle pipe.
Specifically, impulse jet nozzle is used to the overcritical jet stream generated becoming the overcritical jet stream of pulse.
The device of in-situ retorting oil shale of the invention includes coiled tubing inner tube, coiled tubing outer tube and production casing.
Wherein, production casing is used to the oil gas product decomposited being delivered to ground (preferably, until in product separation extraction equipment).Continuously
Oil pipe inner tube is for conveying fuel, water to combustion reaction equipment.Coiled tubing outer tube is for conveying oxygen-containing gas to combustion reaction
Equipment.
In a specific embodiment of the invention, coiled tubing inner tube is set in coiled tubing outer tube and has ring
Sky, coiled tubing outer tube are set in production casing and have annular space.
In a specific embodiment of the invention, production casing is connected to the target position of ground and well oil shale reservoir
It sets.
Wherein, coiled tubing outer tube, coiled tubing inner tube are provided with heat-preserving equipment.For example, heat-preserving equipment can use
Heat-preservation cotton.
In a specific embodiment of the invention, production casing is fixed in pit shaft by cement sheath.
In a specific embodiment of the invention, the beginning of coiled tubing inner tube is connected with fuel water pre-heater,
The end of coiled tubing inner tube is connected to the combustion reaction chamber of combustion reaction equipment.
In a specific embodiment of the invention, the beginning of coiled tubing outer tube is connected to gas preheater, continuously
The end of oil pipe outer tube is connected to the combustion reaction chamber of combustion reaction equipment.
The device of in-situ retorting oil shale of the invention includes oil gas reservoir separation equipment, product separation extraction equipment.Its
In, product separation extraction equipment is for separating and extracting the oil gas aqueous mixtures produced.Oil gas reservoir separation equipment is used for will
The oil gas product separated and extracted is collected.
In a specific embodiment of the invention, product separation extraction equipment is set to oil gas reservoir separation equipment and life
It produces between casing.
In a specific embodiment of the invention, an interface of product separation extraction equipment is connected to production casing,
Another interface of product separation extraction equipment is connected to oil gas reservoir separation equipment.
The device of in-situ retorting oil shale of the invention includes pump group.Wherein, pump group for respectively with product separation and Extraction
Equipment, supply equipment are connected to for fuel apparatus with oxygen supply equipment.
In the device of in-situ retorting oil shale of the invention, the combustion reaction chamber of combustion reaction equipment, nozzle pipe and
Impulse jet nozzle, pre-heater, coiled tubing inner tube, coiled tubing outer tube, production casing, supply equipment, for fuel apparatus, oxygen supply
Equipment, product separation extraction equipment, oil gas reservoir separation equipment and pump group all can be this field routine component and equipment.
Wherein, the diameter of coiled tubing inner tube, coiled tubing outer tube and production casing can be by those skilled in the art according to reality
It needs to be adjusted.
The device of in-situ retorting oil shale of the invention may include following step when being specifically used for in-situ retorting oil shale
It is rapid:
Multilateral well is drilled out to the different layers position of oil shale formation using pulse heating power jet stream；
The target position of each Multilateral Wells will be placed under combustion reaction equipment；Combustion reaction equipment includes combustion reaction chamber, position
Nozzle pipe in combustion reaction bottom of chamber portion and the impulse jet nozzle that is connect with nozzle pipe exit；
By production casing by ground down toward the target position of each Multilateral Wells；
It is inserted in coiled tubing inner tube in coiled tubing outer tube, and is carried out on coiled tubing outer tube and coiled tubing inner tube
Coiled tubing outer tube is inserted in production casing by isothermal holding, and coiled tubing outer tube and the beginning of coiled tubing inner tube difference
Be connected with fuel water pre-heater and gas preheater, by the end of coiled tubing outer tube and the end of coiled tubing inner tube with
The connection of combustion reaction equipment；
Fuel water pre-heater, gas preheater, product separation extraction equipment, oil gas reservoir separation are set on the ground
Equipment, supply equipment, for fuel apparatus, oxygen supply equipment and pump group.By the interface and oil gas of product separation extraction equipment
Preserve separation equipment connection；Another interface of product separation extraction equipment is connect with production casing；By supply equipment and combustion
Expect the connection of water pre-heater, will be connect for fuel apparatus with fuel water pre-heater, by fuel water pre-heater and coiled tubing
Inner tube connection；Oxygen supply equipment is connect with gas preheater, gas preheater is connect with coiled tubing outer tube；By pump group
It is connect with product separation extraction equipment, supply equipment, for fuel apparatus and oxygen supply equipment；
Pump group is opened, by the way that fuel aqueous mixtures are pumped into fuel water pre-heater for fuel apparatus, then by pre-add
The supercritical fuel aqueous mixtures of heat are pumped into from coiled tubing inner tube to the combustion reaction chamber of combustion reaction equipment, make combustion reaction
Chamber internal pressure reaches 22.1MPa or more, and oxygen-containing gas is pumped into gas preheater by oxygen supply equipment, preheating is surpassed
Critical oxygen-containing gas is pumped into from coiled tubing outer tube to the combustion reaction chamber of combustion reaction equipment, when supercritical fuel aqueous mixtures
After contacting with oxygen-containing gas, dieseling occurs；When fuel starts to burn, slowly reduce to fuel aqueous mixtures and oxygen-containing gas
Pre-heating temperature, combustion product pass through combustion reaction bottom of chamber portion nozzle pipe, from impulse jet nozzle export spray formed high speed
Pulsing jet, the heat for generation of burning and the impact force action of jet stream make oil shale that thermal cracking occur, crack out in oil shale formation
Oil gas product returned along production casing into product separation extraction equipment, enter oil gas reservoir separation equipment after extracting separation；
Wherein, the temperature for controlling pre-heater, when the intracavitary flame of combustion reaction occurs that the setting of pre-heater can be reduced
Temperature keeps the stabilization of flame to 375 DEG C ± 10 DEG C (hydro-thermal fray-out of flame temperature) or more, and by control pump group, guarantees combustion
Material aqueous mixtures and oxygen-containing gas are persistently pumped into, and by the intracavitary pressure of pump group control combustion reaction in 25MPa ± 2MPa
(the intracavitary pressure of combustion reaction can adjust supply equipment, for one in fuel apparatus and oxygen supply equipment by pump group above
Or several injection rates controls), while by supply equipment and for fuel apparatus from coiled tubing inner tube to combustion reaction chamber
Fuel aqueous mixtures are pumped into, since the intracavitary pressure of combustion reaction at this time is higher than 25MPa, the intracavitary temperature of combustion reaction is higher than
374.3 DEG C, coiled tubing inner tube enters the intracavitary water of combustion reaction still above-critical state and (is higher than in pressure greater than 22.1MPa, temperature
At 374.3 DEG C, water is in a supercritical state, can realize with Aalcohols fuel and dissolve each other well, while can support to burn), with
Enter the intracavitary oxygen-containing gas of combustion reaction from coiled tubing outer tube to be sufficiently mixed, burn, high-intensitive the super of duration occurs and faces
Boundary's water oxidation reaction adjusts the flow-rate ratio for being injected into combustion reaction intracavitary oxygen-containing gas and fuel aqueous mixtures, to control combustion
The flame temperature in reaction chamber is burnt, guarantees the stabilization of flame；Oxidation product is exported from the impulse jet nozzle in combustion reaction bottom of chamber portion to be sprayed
High-speed pulse jet stream is formed out.The impact force action of heat and pulsing jet that burning generates sends out oil shale in oil shale formation
Raw cracking, while the supercritical water ejected also carries a certain amount of oxygen, this partial oxidation can be aoxidized with oil shale
Reaction releases a large amount of heat, promotes the further thermal cracking of oil shale, while supercritical water also has stronger dissolution and extraction
Property can extract the oil gas product cracked out, and the oil gas product extracted is returned along production casing into product
Separation extraction equipment enters oil gas reservoir equipment after separation and Extraction and is collected, to realize the in-situ retorting to oil shale；
Continue to be pumped into supercritical water into well, until bottom pressure reaches 25MPa ± 2MPa, closing well 2 days, then open again
Well, the oil gas product exploitation that cracking is come out to ground；
After completing exploitation, pump group to be closed, closes pre-heater, stopping is pumped into fuel aqueous mixtures and oxygen-containing gas, and on
Production casing, coiled tubing outer tube, coiled tubing inner tube and combustion reaction device are mentioned, the in-situ retorting to oil shale is completed.
The present invention also provides a kind of method of in-situ retorting oil shale, this method is in-situ retorting oil through the invention
What the device of shale was completed, method includes the following steps:
Into combustion reaction equipment, injection is preheated to the water of set temperature (375 DEG C ± 10 DEG C), until combustion reaction is set
Standby pressure reaches 22.1MPa or more (preferably 25MPa)；
Fuel aqueous mixtures are heated to supercriticality；Wherein, the content of fuel is 10%- in fuel aqueous mixtures
50% (preferably 30%)；
Oxygen-containing gas is heated to supercriticality；
The pressure for regulating and controlling combustion reaction equipment is 25MPa ± 2MPa, and supercriticality is injected into combustion reaction equipment
Fuel aqueous mixtures inject the oxygen-containing gas of supercriticality into combustion reaction equipment, carry out combustion reaction；
When hypergolic reaction occurs in combustion reaction equipment, the preheating temperature to fuel aqueous mixtures and oxygen-containing gas is reduced
Degree is to 375 DEG C ± 10 DEG C；
Combustion product is sprayed into well in a manner of pulsing jet, until bottom pressure reaches 25MPa ± 2MPa, is stopped
Injection, closing well closing, after oil shale carries out sufficient thermal cracking in stratum, drives a well, and the gas mixture of generation is exploited
It is separated to ground, to realize the in-situ retorting to oil shale.
The method of in-situ retorting oil shale of the invention injects preheated fuel aqueous mixtures and oxygen-containing gas, makes to surpass
Oxidation and spontaneous combustion phenomenon occurs when the fuel aqueous mixtures and oxygen-containing gas of critical state come into full contact in reaction chamber, generates hydro-thermal
Flame generates a large amount of heat, and combustion product is mainly water and carbon dioxide.Have through being formed at outlet pulses nozzle compared with thump
The pulse heating power jet stream of ability, pulsing jet act on rock surface and form crack and hole, and combustion product supercritical water carries
A large amount of heat enters in oil shale formation from from fracture pore, and organic matter decomposition inside oil shale is promoted to be converted into corresponding oil
Gas product.
Since heating power fluid is sprayed in a manner of pulsing jet, high-speed jet can occur very by force with intracavitary air is vibrated
Strong momentum-exchange generates momentum-exchange and generates unstable shear layer, and the thickness of shear layer on fluid flow direction later
Degree can constantly thicken, and liquid during jet flow near shear layer is inhaled the vortex for forming large scale by volume.When be vortexed to
It is collided when lower motion with lower part impact walls, will form pressure disturbance, when the frequency of the pressure disturbance intrinsic frequency intracavitary with oscillation
Rate can generate periodic resonance excitation when identical, to generate pulsing jet.Pulse heating power jet stream can be in rock surface shape
At a large amount of irregular crack, and discontinuity is injected with conducive to the removing of bottom landwaste, so that oil shale formation be made to generate
New appears；When constantly injection heating power jet stream makes bottom pressure be more than 22.1MPa, Jetstream fluid is supercritical water, supercritical water
Diffusion coefficient and heat and mass ability with higher can effectively enter and promote oil shale in the minute crack of oil shale
Thermal cracking, the supercritical water ejected have stronger oxidisability again, and the oxidation material in supercritical water can be sent out with oil shale
Biochemical reaction, to generate a large amount of heat, the heat of generation is constantly distally propagated, and promotes the further hot tearing of oil shale
Solution；Meanwhile supercritical water has preferable dissolubility again, oil gas product can be extracted.
In the method for in-situ retorting oil shale of the invention, the well positioned at oil shale formation is by supercritical water pulse heat
Power jet stream drills out.Wherein, by the drilling well of heating power jet stream can with reference to CN103790516A (application number: 201410075665.9,
A kind of denomination of invention: new methods of drilling using heating power jet-flow efficient broken rock) disclosed in boring method.
In the method for in-situ retorting oil shale of the invention, oxygen-containing gas theoretical air and pure oxygen are ok, in order to
The extent of reaction is controlled, the excessive oxidation of oil shale is prevented.In a specific embodiment of the invention, use air as oxygen-containing
Gas.
In a specific embodiment of the invention, the fuel of use includes in methanol, ethyl alcohol, isopropanol and methane etc.
A combination of one or more.
In the method for in-situ retorting oil shale of the invention, by be pre-heated to certain temperature fuel aqueous mixtures and
Oxygen meet spontaneous combustion generate hydro-thermal flame, then can by hydro-thermal flame the liquid in reaction chamber is again heated to it is overcritical
State.
In the method for in-situ retorting oil shale of the invention, combustion reaction equipment is made to generate hydro-thermal flame, when hydro-thermal fire
After flame generates, the pre-heating temperature to fuel aqueous mixtures can be reduced.Since combustion reaction can release a large amount of heat, work as fuel
It just no longer needs to provide heat after starting burning, reaction spontaneous can go on.
In the method for in-situ retorting oil shale of the invention, on the oil gas product that is generated thermal cracking by production casing
Ground is returned to, the diameter of production casing is greater than coiled tubing outer tube, and is placed on except coiled tubing outer tube.
In the method for in-situ retorting oil shale of the invention, fuel aqueous mixtures are continuously injected into combustion reaction equipment
And oxygen-containing gas, the intracavitary pressure of control combustion reaction (can control the pressure in 25MPa ± 2MPa or more by ground pump group
Power).
In the method for in-situ retorting oil shale of the invention, pulse is generated by impulse jet nozzle in the product of combustion reaction
Heating power jet stream, the jet energy that pulse heating power jet stream preferably utilizes can quickly form crack on oil shale surface, so as to
So that Jetstream fluid enters in crack, the lysis efficiency of oil shale is improved.
In a specific embodiment of the invention, the oxygen content being ejected into oil shale formation in supercritical water is adjusted,
And then control the oxicracking rate of oil shale.
Wherein, the ratio between amount of oxygen-containing gas needed for being actually implanted into the amount and theory of oxygen-containing gas in definition reaction is reaction system
Number, the reaction coefficient of adjustable oxygen-containing gas are 0.5-6.
Preferably, adjust oxygen-containing gas reaction coefficient be 0.5-6, can further realize fuel more fully burn with
The quick oxicracking of oil shale.
It further include being separated to the oil gas product exploited to ground in the method for in-situ retorting oil shale of the invention
The step of extraction.
In a specific embodiment of the invention, the light hydrocarbons extracted and alcohols material are mixed with water, is made
For fuel aqueous mixtures, can be recycled.On to return to the oil gas product on ground be actually oil gas aqueous mixtures, extracted point
From rear, available shale oil, bitumen and hydrocarbon gas.For example, the water separated can be mixed with fuel again
It closes, injects in generator, reduce the waste of water.
In the method for in-situ retorting oil shale of the invention, by injecting preheated fuel water and oxygen-containing from ground
Gas makes fuel aqueous mixtures and oxygen-containing gas in a supercritical state meet and realizes igniting self-combustion, fire to oil shale formation
Hot fluid after burning is sprayed through impulse jet nozzle, promotes the thermal cracking of oil shale.Continue to be sprayed into well until bottom pressure reaches
When 25Mpa, termination of pumping closing well drives a well again after 2 days, the oil gas product of decomposition is returned to ground, to realize that the original position of oil shale is opened
It adopts.
In the method for in-situ retorting oil shale of the invention, burning generates the thermal cracking that a large amount of heat promotes oil shale,
Sufficient heat is provided for the cracking of oil shale；Also, the percussion of pulsing jet can be such that heat transfer speed accelerates,
The fragmentation of pulsing jet can make oil shale form crackle and hole, change hot-fluid physical efficiency preferably with oil shale
Heat；Meanwhile when bottom pressure is higher than 22.1MPa, jet stream becomes supercritical water jet, the oxidation material carried in supercritical water
Oxidation reaction can occur with oil shale, generate a large amount of heat, promote the further thermal cracking of oil shale, while supercritical water also has
There are preferable dissolution and extraction ability, the oil gas product that cracking generates can be extracted；In turn, the combustion heat, jet stream and
The compound action that supercritical water extracts, can greatly improve the production efficiency of oil shale.
The method and device of in-situ retorting oil shale of the invention, has following advantages:
(1) cost of winning is lower, is heated using the spontaneous combustion of fuel water, and the cost for generating supercritical water is reduced,
Mined alcohols and hydro carbons can also follow bad injection as fuel；Meanwhile this method and device once lower can bore simultaneously
The drilling well work and exploitation work for realizing oil shale, do not need fracturing work, substantially increase the efficiency of oil shale recovery, reduce
Cost of winning.
(2) production efficiency is higher, since the supercritical water pulse heating power jet stream of generation can be formed greatly on oil shale surface
The irregular cracks of amount, supercritical water have preferable heat and mass ability, can enter inside oil shale, promote oil shale
Thermal cracking, while with oil shale oxidation reaction can occur for the oxide carried in supercritical water, generate a large amount of heat, promote oil
The further cracking of shale；Supercritical water has preferable dissolution and extraction ability simultaneously, and the oil gas that cracking can be generated produces
Object extracts；Also, pyrolytic reaction will occur for oil shale 3h-5h in the environment of supercritical water, compared to other pyrolysis
Mode improves the efficiency of heat effect.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of the in-situ retorting oil shale in the embodiment of the present invention 1.
Fig. 2 is combustion reaction equipment and self-excited pulse spray in the device of the in-situ retorting oil shale in the embodiment of the present invention 1
The structural schematic diagram of mouth.
Main Reference symbol description:
1, supply equipment 2, for fuel apparatus 3, fuel water pre-heater 4, oxygen supply equipment 5, gas preheater 6,
Product extract separation equipment 7, oil gas reservoir separation equipment 8, ground 9, cement sheath 10, production casing 11, in coiled tubing
Pipe 12, coiled tubing outer tube 13, top plate basement rock 14, oil shale formation 15, bottom plate basement rock 16, combustion reaction equipment 17,
Oil gas product 18, pulsing jet 19, combustion reaction chamber 20, nozzle pipe 21, self-excited pulsed jet 22, self-excited pulse spray
Mouth vibrates chamber 23, self-excited pulsed jet oscillation chamber impact walls 24, self-excited pulsed jet outlet
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention
Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.
Embodiment 1
The present embodiment provides firstly a kind of device of in-situ retorting oil shale, with structure as shown in Figure 1, the dress
It sets and specifically includes:
Combustion reaction equipment 16, self-excited pulsed jet 21, preheating equipment, coiled tubing inner tube 11, coiled tubing outer tube
12, production casing 10, supply equipment 1, for fuel apparatus 2, oxygen supply equipment 4 and pump group.
It include raw material offer portion in the device of the in-situ retorting oil shale of wherein one embodiment.The raw material offer portion includes
Supply equipment 1, for fuel apparatus 2, oxygen supply equipment 4, preheating equipment and pump group.Wherein, raw material offer portion is used for as burning
Reaction provides raw material.
Specifically, supply equipment 1 is used to supply water in recovery process for combustion reaction equipment 16, to form overcritical water-jet
Stream, while making up reservoir pressure deficit.It is used to supply fuel for combustion reaction equipment 16 to light a fire for fuel apparatus 2.Oxygen supply is set
Standby 4 for providing oxygen-containing gas needed for combustion process.
Specifically, supply equipment 1 is connected to coiled tubing inner tube 11；It is connected to for fuel apparatus 2 with coiled tubing inner tube 11；
Oxygen supply equipment 4 is connected to coiled tubing outer tube 12.
More specifically, preheating equipment be used for before combustion reaction equipment is not lighted a fire to fuel aqueous mixtures and oxygen into
Row preheating.Preheating equipment is respectively fuel water pre-heater 3 and gas preheater 5；Wherein, fuel water pre-heater 3
One end be connected to respectively with supply equipment 1 and for fuel apparatus 2, the other end of fuel water pre-heater 3 and coiled tubing inner tube
11 connections；One end of gas preheater 5 is connected to oxygen supply equipment 4, the other end and coiled tubing outer tube of gas preheater 5
12 connections.
It include combustion reaction equipment 16 in the device of the in-situ retorting oil shale of wherein one embodiment.Wherein, burning is anti-
Answer equipment 16 for providing environment for combustion reaction.Structure is as shown in Figure 2.
Combustion reaction equipment 16 includes combustion reaction chamber 19, the fuel and water inlet, oxygen positioned at 19 top of combustion reaction chamber
Gas entrance, the nozzle pipe 20 positioned at 19 bottom of combustion reaction chamber.Wherein, self-excited pulsed jet 21 is connected to nozzle pipe 20
Exit 24.Impulse jet nozzle is used to the supercritical water jet of generation becoming pulse supercritical water jet.
It include coiled tubing inner tube 11, coiled tubing outer tube in the device of the in-situ retorting oil shale of wherein one embodiment
12 and production casing 10.Wherein, production casing 10 is used to the oil gas product decomposited being delivered to ground 8 (preferably to product
In separation extraction equipment).Coiled tubing inner tube 11 is for conveying fuel, water to combustion reaction equipment.Coiled tubing outer tube 12 is used
In conveying oxygen-containing gas to combustion reaction equipment.
Coiled tubing inner tube 11 is set in coiled tubing outer tube 12, and coiled tubing outer tube 12 is set to production casing 10
It is interior.Production casing is connected to the target position of ground and well oil shale reservoir.Production casing 10 is fixed on well by cement sheath 9
In cylinder.
Wherein, coiled tubing outer tube 12, coiled tubing inner tube 11 are provided with heat-preserving equipment.For example, heat-preserving equipment can be with
Using heat-preservation cotton.
The beginning of coiled tubing inner tube 11 is connected to fuel water pre-heater 3, the end of coiled tubing inner tube 11 and burning
The combustion reaction chamber 19 of consersion unit 16 is connected to.The beginning of coiled tubing outer tube 12 is connected to gas preheater 5, coiled tubing
The end of outer tube 12 is connected to the combustion reaction chamber 19 of combustion reaction equipment 16.
It include oil gas reservoir separation equipment 7, product separation in the device of the in-situ retorting oil shale of wherein one embodiment
Extract equipment 6.Wherein, product separation extraction equipment 6 is for separating and extracting the oil gas aqueous mixtures produced.Oil gas reservoir point
It is used to for the oil gas product separated and extracted being collected from equipment 7.
Product separation extraction equipment 6 is set between oil gas reservoir separation equipment 7 and production casing 10.Product separation and Extraction
One interface of equipment 6 is connected to production casing 10, another interface of product separation extraction equipment 6 is separated with oil gas reservoir to be set
Standby 7 connection.
It include pump group in the device of wherein one embodiment in-situ retorting oil shale.Wherein, pump group for respectively with product
Separation extraction equipment, supply equipment are connected to for fuel apparatus with oxygen supply equipment.
The present embodiment additionally provides a kind of method using supercritical water pulse heating power jet stream in-situ retorting oil shale, the party
Method is realized using device shown in FIG. 1 comprising following steps:
It is top plate base on oil shale formation 14 using the different layers position of pulse heating power jet stream drilling well to oil shale formation 14
Rock 13, under be bottom plate basement rock 15, wherein can be with reference to disclosed in CN103790516A by the drilling well of pulse heating power jet stream
Boring method；
The target position in well will be placed under combustion reaction equipment 16；Combustion reaction equipment 16 include combustion reaction chamber 19,
Nozzle pipe 20 positioned at 19 bottom of combustion reaction chamber.Self-excited pulsed jet 21 is mounted on the nozzle pipe of combustion reaction equipment 16
20 exit；
By production casing 10 from ground G.I.H target position；And production casing is fixed by cement sheath 9；
11 sets of the coiled tubing inner tube inside in coiled tubing outer tube 12, and to coiled tubing inner tube 11, coiled tubing outside
Pipe 12 carries out isothermal holding, by 12 tripping in production casing 10 of coiled tubing outer tube, the beginning of coiled tubing outer tube 12 and placement
Gas preheater 5 in ground is connected, and coiled tubing inner tube 11 is connected with the fuel water pre-heater 3 for being placed in ground；Even
The end of continuous oil pipe outer tube 12 and coiled tubing inner tube 11 is connected with combustion reaction equipment 16；
On the ground be equipped with pump group, fuel water pre-heater 3, gas preheater 5, supply equipment 1, for fuel apparatus 2
With oxygen supply equipment 4, product separation extraction equipment 6 and oil gas reservoir separation equipment 7；3 one end of fuel water pre-heater is set with water supply
Standby 1 is connected with for fuel apparatus 2, and the other end is connected with coiled tubing inner tube 11；5 one end of gas preheater and oxygen supply equipment 4
It is connected, the other end is connected with coiled tubing outer tube 12.6 one end of product separation extraction equipment is connected with production casing 10, the other end
It is connected with oil gas reservoir separation equipment 7；By pump group and supply equipment, for fuel apparatus 2, oxygen supply equipment 4 and product separation and Extraction
Equipment 6 is connected.
Firstly, using target position (oil shale formation 14) in the method drilling well to well of pulse heating power jet stream, burning is anti-
Answer the target position in well of equipment 16.
Pump group is opened, fuel aqueous mixtures are pumped into fuel water pre-heater 3 by setting 2 for fuel apparatus, it then will be pre-
The fuel aqueous mixtures of heating are pumped into from coiled tubing inner tube 11 to the combustion reaction chamber 19 of combustion reaction equipment 16, keep burning anti-
It answers 16 internal pressure of equipment to reach 25MPa, oxygen-containing gas is then pumped by gas preheater 5 by oxygen supply equipment 4, then will
Preheating gas is pumped into from coiled tubing outer tube 12 to the combustion reaction chamber 19 of combustion reaction equipment 16, when being preheating to 550 DEG C
After the fuel aqueous mixtures of left and right are contacted with oxygen, it may occur that dieseling generates hydro-thermal flame；After generating hydro-thermal flame, slowly
The slow pre-heating temperature reduced to fuel aqueous mixtures and oxygen, combustion product pass through the nozzle pipe of 19 bottom of combustion reaction chamber
20, the pulsing jet 18 for forming high speed is sprayed from self-excited pulsed jet outlet 24, the pulsing jet 18 of high speed impacts oil shale
On reservoir 14, crack can be formed on oil shale surface, or even can generate broken, while combustion product supercritical water carries largely
Heat can enter generate crack in adequately exchanged heat with oil shale, to promote the thermal cracking of oil shale；It cracks out
Oil gas product 17 returned along production casing 10 extract separation into product separation extraction equipment 6 after into oil gas reservoir point
From in equipment 7, to realize the in-situ retorting to oil shale.
The temperature for controlling fuel water pre-heater 3, gas preheater 5, after 16 flame of combustion reaction equipment occurs
Can reduce fuel water pre-heater 3, gas preheater 5 set temperature to 375 DEG C or more, keep the stabilization of flame, and
By controlling pump group, guarantee persistently being pumped into for fuel aqueous mixtures and oxygen.The pressure in combustion reaction chamber 19 is controlled by pump group
Power is 25MPa or more (pressure in combustion reaction chamber 19 can be controlled by the injection rate of pump group adjusting supply equipment 1), together
When combustion reaction chamber 19 by supply equipment 1 and for fuel apparatus 2 from from coiled tubing inner tube 11 to combustion reaction equipment 16 pump
Enter fuel aqueous mixtures, since the pressure in combustion reaction chamber 19 at this time is higher than 25MPa, the temperature in combustion reaction chamber 19 is higher than
374.3 DEG C, therefore become above-critical state from the water that coiled tubing inner tube 11 enters in combustion reaction chamber 19 and (be greater than in pressure
When 22.1MPa, temperature are higher than 374.3 DEG C, water is in a supercritical state, there is a preferable heat and mass ability, and can and alcohols
Fuel realization is dissolved each other well, the quick progress that can be reacted with accelerated oxidation), it is anti-with burning is entered from coiled tubing outer tube 12
Dieseling can be occurred by answering the oxygen-containing gas in chamber 19 to be mixed, and generate the hydro-thermal flame of duration, and adjusting is injected into burning
The flow-rate ratio of oxygen-containing gas and fuel aqueous mixtures in reaction chamber 19 is protected with controlling the flame temperature in combustion reaction chamber 19
Demonstrate,prove the stabilization of flame.Oxidation product enters in self-excited pulsed jet 21 from 19 bottom nozzle pipeline 20 of combustion reaction chamber, and heating power is penetrated
The self-excited pulsed jet that stream collides 21 lower section of self-excited pulsed jet, which vibrates, can generate pressure disturbance in chamber impact walls 23, work as pressure
When the frequency of disturbance is identical with the intrinsic frequency of self-excited pulsed jet oscillation chamber 22, periodic resonance excitation can be generated, thus
Generate pulsing jet.The pulse heating power jet stream of generation is ejected from self-excited pulsed jet outlet 24, acts on oil shale formation
14 form crack and hole, and combustion product supercritical water carries a large amount of heat and enters oil shale formation 14 from hole and crack
In, promote the thermal cracking of oil shale.The supercritical water that ejects also carries a certain amount of oxygen simultaneously, this partial oxidation can be with
Oxidation reaction occurs for oil shale, releases a large amount of heat, promotes the further thermal cracking of oil shale.Simultaneously supercritical water also have compared with
Strong dissolution and extraction property, the oil gas product cracked out can be extracted, the oil gas product 17 extracted is along production
It returns on casing 10 and is collected after carrying out separation and Extraction into product separation extraction equipment 6 into oil gas reservoir separation equipment 7；
Continue to be pumped into fuel aqueous mixtures into combustion reaction chamber 19 and oxygen form supercritical water pulse heating power jet stream 18,
Until bottom pressure reaches 25MPa, closing well drives a well for a period of time, then again, the exploitation of oil gas product 17 that cracking is come out to ground
Come on face；
After completing exploitation, pump group to be closed, closes pre-heater, stopping is pumped into fuel aqueous mixtures and oxygen-containing gas, and on
Mention production casing 10, coiled tubing outer tube 12, coiled tubing inner tube 11 and combustion reaction device 16.
In the present embodiment, it is heated using the spontaneous combustion of fuel water, reduces the cost for generating supercritical water, simultaneously
Mined alcohols and hydro carbons can also follow bad injection as fuel, and this method can once it is lower bore just realize drilling well and
The effect of exploitation avoids fracturing work, reduces cost of winning.Also, since the supercritical water pulse heating power jet stream of generation can
To form a large amount of irregular cracks on oil shale surface, supercritical water has preferable heat and mass ability, can enter oil
Inside shale, it is anti-that with oil shale oxidation can occur for the oxide for promoting the thermal cracking of oil shale, while carrying in supercritical water
It answers, generates a large amount of heat, promote the further cracking of oil shale；Supercritical water has preferable dissolution and extraction ability simultaneously,
The oil gas product that cracking generates can be extracted.Also, heat will occur for oil shale 3-5h in the environment of supercritical water
Solution reaction, compared to other pyrolysis ways, improves the efficiency of heat effect.The combustion heat, pulsing jet and supercritical water mention
It takes and to the compound action of effective hydrocarbon generation capacity protective value, the extraction ability of oil shale is compared compared with conventional ground cracking process, mentioned
High 30%-50%, can greatly improve production efficiency.
The present embodiment cracks oil shale using the heat that supercritical water carries, while false impulse jet action power
With the extractability of supercritical water, the economical and efficient exploitation of oil shale is realized.The method of in-situ retorting oil shale of the invention
And the cost of winning of device is lower, production efficiency is higher.
Claims (10)
1. a kind of device of in-situ retorting oil shale, wherein the device includes: that combustion reaction equipment, impulse jet nozzle, preheating are set
Standby, coiled tubing inner tube, coiled tubing outer tube, production casing, supply equipment, for fuel apparatus, oxygen supply equipment and pump group；
Wherein, the oxygen supply equipment is connected to coiled tubing outer tube；
The supply equipment described is connected to the coiled tubing inner tube for fuel apparatus；
The combustion reaction equipment is set in oil shale formation, and the bottom of combustion reaction equipment is provided with impulse jet nozzle；
The coiled tubing inner tube, coiled tubing outer tube, production casing are connected to the combustion reaction equipment.
2. the apparatus according to claim 1, wherein the combustion reaction equipment includes combustion reaction chamber, and it is anti-to be located at burning
Fuel water inlet, the oxygen intake for answering top of chamber, the nozzle pipe positioned at combustion reaction bottom of chamber portion；
Preferably, the impulse jet nozzle is connected to the exit of nozzle pipe.
3. the apparatus according to claim 1, wherein the preheating equipment is respectively that fuel water pre-heater and gas are pre-
Heater；One end of fuel water pre-heater is connected to supply equipment and for fuel apparatus respectively, in the other end and coiled tubing
Pipe connection；One end of gas preheater is connected to oxygen supply equipment, and the other end is connected to coiled tubing outer tube.
4. the apparatus according to claim 1, wherein the coiled tubing inner tube is set in the coiled tubing outer tube simultaneously
With annular space, the coiled tubing outer tube is set in the production casing and has annular space；
Preferably, the coiled tubing outer tube, coiled tubing inner tube are provided with heat-preserving equipment.
5. device according to claim 3, wherein the beginning of the coiled tubing inner tube is connected with fuel water pre-heater
Logical, the end of coiled tubing inner tube is connected to the combustion reaction chamber of the combustion reaction equipment；
Preferably, the beginning of the coiled tubing outer tube is connected to gas preheater, the end of the coiled tubing outer tube with
The combustion reaction chamber of the combustion reaction equipment is connected to.
6. the apparatus according to claim 1, wherein the device further includes oil gas reservoir separation equipment, product separation and Extraction
Equipment；Wherein, the product separation extraction equipment is set between the oil gas reservoir separation equipment and the production casing；
Preferably, an interface of the product separation extraction equipment is connected to the production casing, the product separation and Extraction
Another interface of equipment is connected to oil gas reservoir separation equipment.
7. a kind of method of in-situ retorting oil shale, wherein the method for the in-situ retorting oil shale is appointed by claim 1-6
What device described in one was completed, method includes the following steps:
Into combustion reaction equipment, injection is preheated to the water of set temperature, until the pressure of combustion reaction equipment reaches
22.1MPa or more；
Fuel aqueous mixtures are heated to supercriticality；Wherein, the content of fuel is 10%-50% in fuel aqueous mixtures；
Oxygen-containing gas is heated to supercriticality；
The pressure for regulating and controlling combustion reaction equipment is 25MPa ± 2MPa, and the fuel of supercriticality is injected into combustion reaction equipment
Aqueous mixtures inject the oxygen-containing gas of supercriticality into combustion reaction equipment, and hypergolic reaction occurs；
When hypergolic reaction occurs in combustion reaction equipment, reduce to the pre-heating temperatures of fuel aqueous mixtures and oxygen-containing gas extremely
375℃±10℃；
Combustion product is sprayed into well in a manner of pulsing jet, until bottom pressure reaches 25MPa ± 2MPa, stops note
Enter, closing well closing after oil shale carries out sufficient thermal cracking in stratum, drives a well, and the gas mixture exploitation of generation is arrived
Ground is separated, to realize the in-situ retorting to oil shale.
8. according to the method described in claim 7, wherein, when bottom pressure reaches 25MPa, closing well 2 days.
9. according to the method described in claim 7, wherein, fuel aqueous mixtures being preheated to 550 DEG C+10 DEG C, are obtained overcritical
The fuel aqueous mixtures of state；
Preferably, oxygen-containing gas is heated to 400 DEG C ± 30 DEG C, obtains the oxygen-containing gas of supercriticality；
Preferably, the temperature of the water of set temperature is 375 DEG C ± 10 DEG C.
10. according to the method described in claim 7, wherein, the oxygen-containing gas of supercriticality and the fuel water of supercriticality
The mass flow ratio of mixture is 2:1-2:3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832728A (en) * | 2021-01-08 | 2021-05-25 | 中国矿业大学 | Shale reservoir fracturing method based on methane multistage combustion and explosion |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7549470B2 (en) * | 2005-10-24 | 2009-06-23 | Shell Oil Company | Solution mining and heating by oxidation for treating hydrocarbon containing formations |
| CN102425399A (en) * | 2011-12-29 | 2012-04-25 | 新奥气化采煤有限公司 | Method for exploiting oil shale |
| CN102606128A (en) * | 2011-12-29 | 2012-07-25 | 新奥气化采煤有限公司 | Oil shale mining method and device |
| CN103790516A (en) * | 2014-03-04 | 2014-05-14 | 中国石油大学(北京) | New well drilling method for efficient rock breaking by means of heating power jet flow |
| CN105134152A (en) * | 2015-08-24 | 2015-12-09 | 中国石油大学(北京) | Method and system for extracting natural gas hydrate through thermal jet flow |
| CN105840162A (en) * | 2016-05-17 | 2016-08-10 | 赵金岷 | Underground combustion convection heating method |
| CN108825197A (en) * | 2018-06-19 | 2018-11-16 | 昆明理工大学 | A method of strengthening shale gas recovery ratio |
| CN109707356A (en) * | 2019-02-02 | 2019-05-03 | 吉林大学 | A kind of oil shale in-situ recovery well down-firing heating device and heating means |
| CA3022786A1 (en) * | 2017-11-30 | 2019-05-30 | Cenovus Energy Inc. | Process and system for processing a produced stream from a solvent hydrocarbon recovery operation |
-
2019
- 2019-07-17 CN CN201910644545.9A patent/CN110259424B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7549470B2 (en) * | 2005-10-24 | 2009-06-23 | Shell Oil Company | Solution mining and heating by oxidation for treating hydrocarbon containing formations |
| CN102425399A (en) * | 2011-12-29 | 2012-04-25 | 新奥气化采煤有限公司 | Method for exploiting oil shale |
| CN102606128A (en) * | 2011-12-29 | 2012-07-25 | 新奥气化采煤有限公司 | Oil shale mining method and device |
| CN103790516A (en) * | 2014-03-04 | 2014-05-14 | 中国石油大学(北京) | New well drilling method for efficient rock breaking by means of heating power jet flow |
| CN105134152A (en) * | 2015-08-24 | 2015-12-09 | 中国石油大学(北京) | Method and system for extracting natural gas hydrate through thermal jet flow |
| CN105840162A (en) * | 2016-05-17 | 2016-08-10 | 赵金岷 | Underground combustion convection heating method |
| CA3022786A1 (en) * | 2017-11-30 | 2019-05-30 | Cenovus Energy Inc. | Process and system for processing a produced stream from a solvent hydrocarbon recovery operation |
| CN108825197A (en) * | 2018-06-19 | 2018-11-16 | 昆明理工大学 | A method of strengthening shale gas recovery ratio |
| CN109707356A (en) * | 2019-02-02 | 2019-05-03 | 吉林大学 | A kind of oil shale in-situ recovery well down-firing heating device and heating means |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832728A (en) * | 2021-01-08 | 2021-05-25 | 中国矿业大学 | Shale reservoir fracturing method based on methane multistage combustion and explosion |
| CN112832728B (en) * | 2021-01-08 | 2022-03-18 | 中国矿业大学 | Shale reservoir fracturing method based on methane multistage combustion and explosion |
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