CN106483268B - Oil shale hot pressing converted in-situ experimental rig - Google Patents
Oil shale hot pressing converted in-situ experimental rig Download PDFInfo
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- CN106483268B CN106483268B CN201510523728.7A CN201510523728A CN106483268B CN 106483268 B CN106483268 B CN 106483268B CN 201510523728 A CN201510523728 A CN 201510523728A CN 106483268 B CN106483268 B CN 106483268B
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Abstract
The invention discloses a kind of oil shale hot pressing converted in-situ experimental rigs.The device includes converted in-situ component, the horizontal fractures component being connected with converted in-situ component, and the liquid separation assembly being connected simultaneously with horizontal fractures component and converted in-situ component.Oil shale hot pressing converted in-situ experimental rig of the invention can under truer simulation geological conditions oil shale high-temperature high-pressure in-situ conversion process, therefore test result is more acurrate.
Description
Technical field
The invention belongs to oil-gas exploration and development fields, in particular to oil shale hot pressing converted in-situ experimental rig.
Background technique
Oil shale is that a kind of ash content mass fraction is greater than 40%, and flammable mineral products of the oil content between 3.5%~30% are main
It to be made of deposition organic matter, inorganic mineral and water flooding.Oil shale for buried depth greater than 300m can be using to oil shale
Layer carries out In Situ Heating, is converted into shale oil gas in underground and is exploited.The basic principle of oil shale in-situ production technique
It is so that its solid deposited organic matter is generated flowable oil gas in in-situ conversion, most by heating directly to subterranean oil shale layer
Oil-gas mining is come out by producing well afterwards.
However, existing oil shale in-situ quarrying apparatus can more or less have some defects.As adopted in the prior art
In Situ Heating is carried out to oil shale layer with electrically heated method, i.e., is heated heating wire winding on the outside of oil shale core,
This method cannot investigate the conductive process of heat, also without applying reservoir stress, it is difficult to it is micro- during heating to investigate oil shale
The evolution process in crack；And calcined petroleum coke is used to be added to the method inside oil shale as conducting medium, in reality
Production in it is relatively difficult to achieve；It joined the compacting process of simulation overlying rock in some oil shale in-situ quarrying apparatus, but do not have
Consider the pressure of wherein fluid；And the strata pressure that some oil shale in-situ quarrying apparatus apply is relatively low, does not simulate and was compacted
Journey.
Generally, existing all kinds of oil shale in-situ quarrying apparatus highlight heating method at present, and have ignored on ground
Lower oil shale is into the conversion process of oil gas, various physiochemical boundaries condition (such as compactions, pore fluid pressure, fluid
Medium character, catalytic action etc.) co- controlling effect.Furthermore currently used heating temperature is higher (about 450~500 DEG C),
Heat transfer is slow, and effective heat transfer distances are short, and energy consumption is high, and oil gas conversion ratio is low with recovery ratio (oil content measured less than aluminium rice steamer method).Separately
Outside, existing test platform scale is smaller, larger with underground heat transfer and oil gas extraction process variances, not by fracturing process and turns
Change recovery process to combine, is also difficult to meet in research oil shale pyrolysis mechanism, thermal conductivity law and recovery process condition
The purpose of research, thus cannot more reasonable technical data be provided to field pilot test test well.
The problem of existing in view of the above technology, the technology of the present invention are intended to provide a kind of oil shale hot pressing converted in-situ test dress
Set, can under truer simulation geological conditions oil shale high-temperature high-pressure in-situ conversion process, to solve existing skill
Shortcoming in art.
Summary of the invention
The present invention in view of the deficiencies of the prior art, proposes a kind of oil shale hot pressing converted in-situ experimental rig.
A kind of oil shale hot pressing converted in-situ experimental rig provided according to the present invention, including converted in-situ component, with original
The horizontal fractures component that position conversion component is connected, and the liquid being connected simultaneously with horizontal fractures component and converted in-situ component
Body separation assembly.
In oil shale hot pressing converted in-situ experimental rig of the invention, converted in-situ component be used for oil shale sample into
Row hot pressing converted in-situ, on the one hand which can heat oil shale sample, thus to oil shale sample
Heating makes it generate shale oil gas to be acquired to it, on the other hand can pressurize to oil shale sample, thus simulation oil
Shale samples born in underground buried depth on cover compaction pressure；The horizontal fractures component being connected with converted in-situ component is used
In carrying out horizontal fractures to oil shale sample, for simulating the fracturing process under true geological environment to oil shale；And respectively with
On the one hand the liquid separation assembly that horizontal fractures component is connected with converted in-situ component is used to convert in component in situ adopts
The shale oil gas collected is separated with non-shale oil gas, on the other hand non-shale oil gas can be recycled back to converted in-situ group again
In part.
In some embodiments, converted in-situ component includes test cylinder, and acquisition component is provided in test cylinder and is added
Thermal part.Wherein, acquisition component is connected with horizontal fractures component and liquid separation assembly respectively.Heating element is used for oily page
Rock sample product carry out heating to obtain shale oil gas, and acquisition component is used to acquire shale oil gas in oil shale sample and other
Impurity fluid is filtered separation to shale oil gas and other impurities fluid by liquid separation assembly to obtain required shale
Oil gas, subsequent liquid separation assembly return other impurities fluid circulation in converted in-situ component.
In some embodiments, test cylinder includes top cover labyrinth and lower sealing cover, and acquisition component and heating element are fixed
On top cover labyrinth.The setting can facilitate the dismounting of test cylinder, and can according to need to acquisition component and heating element peace
The position of dress and the depth for entering oil shale sample are adjusted.
In some embodiments, converted in-situ component further includes pressure sealing component, pressure sealing component include with it is upper
The connected sealing compression bar of sealing cover, the compacting compression bar being connected with lower sealing cover, and be connected with sealing compression bar and compacting compression bar
Hydraulic cylinder.It seals compression bar to be used to apply pressure to the top cover labyrinth and lower sealing cover of test cylinder, realize to test cylinder high temperature and pressure
The effect of sealing；Compression bar is compacted to be used to apply pressure to test specimen oil shale sample to realize compaction, to simulate examination
Compaction pressure is covered on testing that sample oil shale sample born in underground buried depth；And hydraulic cylinder is used for as sealing compression bar and compacting
Compression bar provides power.
In some embodiments, converted in-situ component further includes detection part.The detection part preferably includes temperature biography
Sensor and fluid pressure sensor.Temperature sensor is arranged on top cover labyrinth, and fluid pressure sensor passes through pipeline and acquisition
The outlet of component is connected, the Fluid pressure being used to indicate in test specimen oil shale sample.
In some embodiments, horizontal fractures component includes pressure pump and the horizontal fractures pipe being connected with pressure pump, water
Concora crush splits pipe and is connected with test cylinder.Pressure pump is used to apply pressure to fracturing fluid in horizontal fractures pipe to realize in test cylinder
Oil shale sample carry out pressure break.
In some embodiments, oil shale sample is provided in test cylinder, horizontal fractures pipe extends into oil shale sample
Product, and the horizontal fractures tube portion being inserted into oil shale sample is provided with multiple holes.This some holes for pressure break liquid stream for going out.
In some embodiments, liquid separation assembly includes separation unit and collecting part, and one end of separation unit is logical
It crosses Multichannel combination valve to be connected with acquisition component, the other end is connected with collecting part.The program is realized by Multichannel combination valve
The connection of all parts and other assemblies in liquid separation assembly.Preferably, Multichannel combination valve is configured with multiple open
Mouth and interconnected needle-valve.
In some embodiments, liquid separation assembly further includes vacuum pump, and vacuum pump is connected with Multichannel combination valve.Very
Sky pump is for vacuumizing entire test cylinder and connecting pipe after installing oil shale sample, to prevent residual air to oil
The oxidation of shale samples.
In some embodiments, liquid separation assembly further includes the power part being connected with separation unit.The power part
Part is used to provide power to separation unit to realize separation of the separation unit to shale oil gas and fluid impurity.
In some embodiments, oil shale hot pressing converted in-situ experimental rig further includes controller, and controller passes through letter
Number line is connected with hydraulic cylinder, detection part, pressure pump and power part respectively.The controller is used to control the movement of said elements
And the data such as record temperature, pressure.
Compared with prior art, oil shale hot pressing converted in-situ experimental rig of the invention being capable of truer simulation
The high-temperature high-pressure in-situ conversion process of oil shale under matter environmental condition tests dress using oil shale hot pressing converted in-situ of the invention
It sets, heating method, hot walking around boundary condition, conductive characteristic, the seepage flow of fluid and rock can be carried out to oil shale
The experiment work of the technological parameter of compressibility etc., the reality converted due to the condition and shale oil gas of setting in ground in-situ
Border process provides more efficiently technology assessment parameter more closely, therefore can develop for oil shale in-situ Transformation Engineering.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 is the structural schematic diagram of oil shale hot pressing converted in-situ experimental rig according to the present invention.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Details described here is exemplary, and is only used to that the embodiment of the present invention is illustratively discussed, it
Presence be to provide for being considered as the most useful and most intelligible description in terms of the principle of the present invention and concept.It closes
In this point, it is not attempted to exceed CONSTRUCTED SPECIFICATION of the invention Jie of the required degree of the basic comprehension present invention here
Continue, those skilled in the art be clearly understood that by specification and its attached drawing how to be practically carrying out it is of the invention several
Kind form.
Fig. 1 shows the structural schematic diagram of oil shale hot pressing converted in-situ experimental rig 100 according to the present invention.The device
100 include converted in-situ component, the horizontal fractures components that are connected with converted in-situ component, and respectively with horizontal fractures component
The liquid separation assembly being connected with converted in-situ component.Various components will hereinafter have and introduce in detail.
In oil shale hot pressing converted in-situ experimental rig 100 of the invention, converted in-situ component is used for oil shale sample
Product carry out hot pressing converted in-situ, and on the one hand which can heat oil shale sample, thus to oil shale
The heating of sample 60 makes it generate shale oil gas to be acquired to it, on the other hand can pressurize to oil shale sample 60, from
And simulate that oil shale born in underground buried depth on cover compaction pressure；The horizontal fractures group being connected with converted in-situ component
Part is used to carry out horizontal fractures to oil shale sample 60, for simulating the fracturing process under true geological environment to oil shale；And
On the one hand the liquid separation assembly being connected respectively with horizontal fractures component and converted in-situ component is used for will conversion group in situ
Collected shale oil gas is separated with non-shale oil gas in part, on the other hand non-shale oil gas can be recycled back to original position again
It converts in component.The present invention compared with the prior art, can under truer simulation geological conditions oil shale high temperature
Situ high pressure conversion process can be to oil shale sample 60 using oil shale hot pressing converted in-situ experimental rig 100 of the invention
Carry out the compressibility of heating method, thermal transition boundary condition, conductive characteristic, the seepage flow of fluid and rock etc. technique
The experiment work of parameter, due to more truly simulating the recovery process of shale oil gas, conversion results are more accurate.
According to the present invention, in embodiment as shown in Figure 1, converted in-situ component includes test cylinder 51, is arranged in test cylinder
Acquisition component 53 and heating element 52 in 51.Wherein, acquisition component 53 respectively with horizontal fractures component and liquid separation assembly
It is connected.Heating element 52 is used to carry out oil shale sample 60 heating to obtain shale oil gas, and acquisition component 53 is used for
The shale oil gas and other impurity fluids in oil shale sample 60 are acquired, by liquid separation assembly to shale oil gas and other miscellaneous
Mass flow body is filtered separation to obtain required shale oil gas, and other impurity fluid circulations are returned original by subsequent liquid separation assembly
In position conversion component.It is understood that acquisition component 53 and heating element 52 can be designed to according to actual needs it is different
Number.Preferably, acquisition component 53 and heating element 52 mating setting and extend into oil shale sample 60, heating part in pairs
Multiple heating mode can be used in part 52, such as selection microwave is heated with hot fluid, and preferably passes through temperature sensor 551
Detect the temperature of 60 different parts of oil shale sample.
Preferably, test cylinder 51 is preferably made of special stainless steel material, and diameter is not less than 30cm, is highly not less than
20cm, oil shale sample 60 fill up test cylinder 51 with cylindric.Test cylinder 51 includes top cover labyrinth 511 and lower sealing cover 512, examination
The outer wall for testing cylinder 51 is preferably provided with muff 54.Acquisition component 53 and heating element 52 are fixedly mounted on top cover labyrinth.This sets
The dismounting that can facilitate test cylinder is set, and can according to need the position to acquisition component 53 and heating element 52 and enter oil
The depth of shale samples 60 is controlled.Preferably, multiple openings can be opened up on top cover labyrinth 511 with to heating element 52 and adopting
Collection component 53 is fixed.
According to the present invention, as shown in Figure 1, converted in-situ component further includes pressure sealing component, pressure sealing component includes
The sealing compression bar 571 being connected with top cover labyrinth 511, the compacting compression bar 572 being connected with lower sealing cover 512, and with sealing compression bar
571 hydraulic cylinders being connected with compacting compression bar 572.Compression bar 571 is sealed for the top cover labyrinth 511 and lower sealing cover to test cylinder 51
512 apply pressure, play the role of sealing 51 high temperature and pressure of test cylinder；Compacting compression bar 572 is for applying oil shale sample 60
Plus-pressure to complete compaction, thus simulate that oil shale born in underground buried depth on cover compaction pressure；And hydraulic cylinder
573 for providing power for sealing compression bar 571 and compacting compression bar 572.Preferably, the also settable pressure in lower sealing cover 512
Adjuster 58 is used to detect and adjust the pressure in test cylinder 51.
According to the present invention, converted in-situ component further includes detection part.The detection part preferably includes temperature sensor 551
With fluid pressure sensor 552.Temperature sensor 551 is preferably provided on top cover labyrinth 511, and fluid pressure sensor 552 is logical
It crosses pipeline to be connected with the outlet of acquisition component 53, the Fluid pressure being used to indicate in oil shale sample 60.
It is further preferred that the also settable gantry support 80 outside test cylinder 51 comprising upper pressure-bearing steel plate, lower pressure-bearing steel plate and
Four stainless steel struts, upper pressure-bearing steel plate are used to support sealing compression bar 571, and lower pressure-bearing steel plate is for placing test cylinder 51 and heat preservation
The pressure of set 54 and balanced seal compression bar 571.
According to the present invention, horizontal fractures component includes pressure pump and the horizontal fractures pipe 32 being connected with pressure pump, level pressure
Pipe 32 is split to be connected with test cylinder 51.Horizontal fractures pipe 32 is inserted in in test cylinder 51 oil shale sample 60.Pressure pump packet
High-pressure reservoir 31 and electrodynamic pump 33 are included, high-pressure reservoir 31 is the intermediate receptacle that mobile piston is sealed in one, internal quilt
Mobile piston is divided into two parts, 31 top of high-pressure reservoir up and down and is connected with horizontal fractures pipe 32 by pipeline and valve, under
Portion is connected with electrodynamic pump 33；And electrodynamic pump 33 is for providing pressure and fracturing fluid being passed through horizontal fractures pipe 32 to oil shale sample
60 carry out pressure break.
Horizontal fractures pipe 32 is preferably made of corrosion-resisting alloy steel, and major part is embedded in oil shale sample 60, horizontal
The part for extending into oil shale sample 60 of pressure break pipe 32 offers multiple holes, for going out for pressure break liquid stream.Preferably, horizontal
Pressure break pipe 32 is fixed on the opening of 51 side of test cylinder by fastening screw.
According to the present invention, as shown in Figure 1, liquid separation assembly includes separation unit 71 and collecting part 73, separation unit
71 one end is connected by Multichannel combination valve 74 with acquisition component 53, and the other end is connected with collecting part 73.Preferably, multi-pass
Road combination valve 74 is configured with multiple openings and interconnected needle-valve.Each needle-valve is connected with acquisition component 53, is used for
Inject shale oil gas and fluid impurity.Separation unit 71 is that an inside can be torn open equipped with mobile piston, upper and lower end cap is sealed
The intermediate receptacle unloaded, moving has opening on piston, is connected to by high pressure resistant hose with lower cover, then passes through pipeline and multichannel
Combination valve 74 connects, for the non-hydrocarbon fluids of discharge to be re-circulated in test cylinder 51；And there are two openings for upper end cover, divide
It is not connect with Multichannel combination valve 74 and collecting part 73.Separation unit 71 further preferably include cooling and heating device 72, for its into
Row heating or refrigeration.Collecting part 73 is used to collect the shale oil gas generated.
Preferably, liquid separation assembly further includes vacuum pump 75, and vacuum pump 75 is connected with Multichannel combination valve 74.Vacuum pump
75 for vacuumizing entire test cylinder 51 and pipeline, to prevent residual air to oily page after placing oil shale sample 60
The oxidation of rock sample product 60.
According to the present invention, liquid separation assembly further includes the power part 76 being connected with separation unit.The power part 76
For providing power to separation unit 71 to realize separation of the separation unit 71 to shale oil gas and fluid impurity.
As shown in Figure 1, oil shale hot pressing converted in-situ experimental rig 100 further includes controller 90, controller 90 passes through letter
Number line respectively with hydraulic cylinder 573, detection part (preferably including temperature sensor 551 and fluid pressure sensor 552), electrodynamic pump
33 are connected with power part 76, the data such as movement and record temperature, pressure for controlling said elements.
It should be noted that mentioned-above example only for the purpose of explaining, and is not construed as limiting the present invention.Although
Invention has been described accoding to exemplary embodiment, it being understood, however, that used herein is descriptive and explanation
The language of property, rather than restrictive language.In presently described and modification scope of the appended claims, do not departing from
In the range of scope and spirit of the present invention, the present invention can be changed.Although here according to specific mode, material
Invention has been described with embodiment for material, but the present invention is not limited in details disclosed herein；On the contrary, the present invention can expand
Open up structure, the methods and applications of all identical functions for example within the scope of the appended claims.
Claims (10)
1. a kind of oil shale hot pressing converted in-situ experimental rig, comprising:
Converted in-situ component,
The horizontal fractures component being connected with the converted in-situ component, and
The liquid separation assembly being connected simultaneously with the horizontal fractures component and the converted in-situ component；
The converted in-situ component includes test cylinder, the acquisition component being arranged in test cylinder and heating element, wherein described to adopt
Collection component is connected with the horizontal fractures component and liquid separation assembly respectively；
The horizontal fractures component includes pressure pump and the horizontal fractures pipe being connected with the pressure pump, the horizontal fractures pipe with
The test cylinder is connected；
The non-hydrocarbon fluids being discharged from the liquid separation assembly are recycled in test cylinder by acquisition component.
2. oil shale hot pressing converted in-situ experimental rig according to claim 1, which is characterized in that the test cylinder includes
Top cover labyrinth and lower sealing cover, the acquisition component and heating element are fixed on the top cover labyrinth.
3. oil shale hot pressing converted in-situ experimental rig according to claim 2, which is characterized in that the converted in-situ group
Part further includes pressure sealing component, and the pressure sealing component includes the sealing compression bar being connected with the top cover labyrinth, and described
The connected compacting compression bar of lower sealing cover, and the hydraulic cylinder being connected with the sealing compression bar and the compacting compression bar.
4. oil shale hot pressing converted in-situ experimental rig according to any one of claim 1 to 3, which is characterized in that institute
Stating converted in-situ component further includes detection part.
5. oil shale hot pressing converted in-situ experimental rig according to any one of claim 1 to 3, which is characterized in that institute
It states and is provided with oil shale sample in test cylinder, the horizontal fractures pipe extends into the oil shale sample, and the level
The part for extending into the oil shale sample of pressure break pipe is provided with multiple holes.
6. oil shale hot pressing converted in-situ experimental rig according to any one of claim 1 to 3, which is characterized in that institute
Stating liquid separation assembly includes separation unit and collecting part, one end of the separation unit by Multichannel combination valve with it is described
Acquisition component is connected, and the other end is connected with the collecting part.
7. oil shale hot pressing converted in-situ experimental rig according to claim 6, which is characterized in that the Multichannel combination
Valve is configured with multiple openings and interconnected needle-valve.
8. oil shale hot pressing converted in-situ experimental rig according to claim 6, which is characterized in that the liquid separation group
Part further includes vacuum pump, and the vacuum pump is connected with the Multichannel combination valve.
9. oil shale hot pressing converted in-situ experimental rig according to claim 6, which is characterized in that the liquid separation group
Part further includes the power part being connected with the separation unit.
10. oil shale hot pressing converted in-situ experimental rig according to claim 9, which is characterized in that further include controller；
The converted in-situ component further includes detection part, pressure sealing component and the liquid being connected with the pressure sealing component
Cylinder pressure；
The controller by signal wire respectively with the hydraulic cylinder, the detection part, the pressure pump and the power part
Part is connected.
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| CN108487888B (en) * | 2018-05-24 | 2023-04-07 | 吉林大学 | Auxiliary heating device and method for improving oil gas recovery ratio of oil shale in-situ exploitation |
| CN113944459B (en) * | 2020-07-15 | 2023-04-07 | 中国石油天然气股份有限公司 | Method and device for predicting resource amount of shale in-situ conversion recoverable oil gas |
| CN112127868B (en) * | 2020-09-27 | 2021-08-24 | 中国地质大学（北京） | Test device for simulating underground coal gasification and oil shale co-production and test method thereof |
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| CN102261238A (en) * | 2011-08-12 | 2011-11-30 | 中国石油天然气股份有限公司 | Method for exploiting oil gas by microwave heating of underground oil shale and simulation experiment system thereof |
| CN103206210A (en) * | 2013-04-15 | 2013-07-17 | 中国石油大学(华东) | Experimental apparatus for exploiting natural gas hydrate reservoir by means of thermal fluid fracturing |
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| BRPI0719247A2 (en) * | 2006-10-13 | 2015-06-16 | Exxonmobil Upstream Res Co | Method for producing hydrocarbon fluids, and well standard for a hydrocarbon fluid production program. |
| CN103696747B (en) * | 2013-11-09 | 2016-01-06 | 吉林大学 | A kind of oil shale in-situ extracts the method for shale oil gas |
| CN103868799B (en) * | 2014-03-21 | 2017-01-11 | 中国地质大学（北京） | Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum |
| CN104330310B (en) * | 2014-10-29 | 2016-08-31 | 吉林大学 | A kind of oil shale fracturing experimental system for simulating and the manufacture method of laboratory sample |
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| CN102261238A (en) * | 2011-08-12 | 2011-11-30 | 中国石油天然气股份有限公司 | Method for exploiting oil gas by microwave heating of underground oil shale and simulation experiment system thereof |
| CN103206210A (en) * | 2013-04-15 | 2013-07-17 | 中国石油大学(华东) | Experimental apparatus for exploiting natural gas hydrate reservoir by means of thermal fluid fracturing |
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