CN107271340A - Experimental provision for simulating the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons - Google Patents
Experimental provision for simulating the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons Download PDFInfo
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- CN107271340A CN107271340A CN201610211133.2A CN201610211133A CN107271340A CN 107271340 A CN107271340 A CN 107271340A CN 201610211133 A CN201610211133 A CN 201610211133A CN 107271340 A CN107271340 A CN 107271340A
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- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 81
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000004088 simulation Methods 0.000 claims abstract description 48
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 38
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 20
- 238000002474 experimental method Methods 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 43
- 239000004576 sand Substances 0.000 claims description 24
- 239000006004 Quartz sand Substances 0.000 claims description 19
- 239000000523 sample Substances 0.000 claims description 17
- 239000002689 soil Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 238000007528 sand casting Methods 0.000 claims description 2
- 235000003642 hunger Nutrition 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 10
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 9
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000001294 propane Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920005479 Lucite® Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000010181 polygamy Effects 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
The experimental provision for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons of the present invention, including：Simulation medium unit, including cylinder, and saturation water reservoir, direct cap rock, multilayer lithology overlapped layers and the unsaturated zone for being arranged in cylinder and being sequentially stacked from bottom to up；Gas injection and airflow measurement unit, pass through the gas storage chamber of pipeline and the simulation oil-gas reservoir light hydrocarbon gas；And sampling analysis unit, it is connected with the simulation medium unit.Pass through said structure so that experiment condition solves the blank of Micro blazed-grating study mechanism of the lighter hydrocarbons from saturation water stratum to phreatic surface in above unsaturated zone to a certain extent closer to the complexity of actual geological conditions.
Description
Technical field
It is particularly a kind of to be used to simulate oil gas the present invention relates to oil-gas reservoir lighter hydrocarbons Micro blazed-grating studying technological domain
Hide the experimental provision of the vertical Micro blazed-grating of lighter hydrocarbons.
Background technology
Lighter hydrocarbons in oil-gas reservoir, can be approximate with amount that is faint but can detecting in the presence of the various driving forces in underground
Vertically to earth's surface seepage, this is the theoretical foundation of hydrocarbon geochemical exploration.The vertical Micro blazed-grating generally existing of lighter hydrocarbons can simultaneously be arrived
Up to top layer, confirmed by actual observation, but lighter hydrocarbons are from deep zone of saturation, unsaturated zone Micro blazed-grating
It is to earth's surface that the whole process research for occurring which kind of change is more weak.
Expansion of the forefathers using finite difference formulations to buoyancy-driven mechanism of the hydro carbons in zone of saturation and unsaturated zone
Load telephone-moving in bulk and manufacture simulation.Simulation wherein to the intermediate zone between zone of saturation and unsaturated zone is to borrow oceanography
" the two-way Theoretical Resistance of interphase mass transfer " (by the model as gas exchanges between ocean and air).Such as
The migration situation of fruit gas outside this theoretical explanation underground latent water face, due to the cementation of deposit or soil
Resistance can be produced to gas migration, this model can exist when explaining the migration behavior of gas at underground latent water face
Some are uncertain.In addition, unsaturated zone top hydrocarbon oxidation bacteria is it is assumed that and passing through to the degradation rate of lighter hydrocarbons
The method of known area's actual measurement inverting is tried to achieve, and there is also uncertainty.In actual exploration, it has been found that on phreatic surface
Concentration of the concentration more than propane of ethane under some changes for being difficult to explain, such as phreatic surface occurs for lower hydrocarbon component,
And the concentration of ethane is then less than the concentration of propane on phreatic surface, simply it is interpreted as exchange interaction and is difficult to explain that its is true
Positive reason.
Above mentioned problem would interfere with the understanding to lighter hydrocarbons Micro blazed-grating mechanism, influence the application effect of hydrocarbon geochemical exploration.Tens
Nian Lai, because the complexity of the mechanism of the vertical Micro blazed-grating of lighter hydrocarbons, and the difficulty that experimental provision is built are big, detection
Precision limitation of technology etc., above mentioned problem never has the support of reliable simulated experiment result.And both at home and abroad
The problem of device of the vertical Micro blazed-grating of simulation lighter hydrocarbons done is solved specific aim is stronger, there is no for lighter hydrocarbons from deep
Zone of saturation, the mechanism of unsaturated zone Micro blazed-grating to earth's surface carry out simulation experiment study.
Therefore, how to solve to there is no the mechanism for lighter hydrocarbons from deep zone of saturation, unsaturated zone Micro blazed-grating to earth's surface
The problem of carrying out simulation experiment study, is those skilled in the art's technical issues that need to address.
The content of the invention
The present invention provides a kind of experimental provision for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons, can be in certain journey
The blank of Micro blazed-grating study mechanism of the lighter hydrocarbons from saturation water stratum to phreatic surface in above unsaturated zone is solved on degree.
The experimental provision for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons of the present invention, including：Simulation medium unit,
Including cylinder, and the saturation water reservoir, direct cap rock, many for being arranged in cylinder and being sequentially stacked from bottom to up
Layer lithology overlapped layers and unsaturated zone, wherein be phreatic surface between the multilayer lithology overlapped layers and unsaturated zone,
Set below the phreatic surface to be located in saturation water simulated formation, and the cylinder below the saturation water reservoir
It is equipped with the gas storage chamber for storing simulation oil-gas reservoir light hydrocarbon gas；Gas injection and airflow measurement unit, pass through pipe
Road and the gas storage chamber so that inject simulation oil-gas reservoir into the cylinder with certain flow and pressure
Light hydrocarbon gas；And sampling analysis unit, it is connected with the simulation medium unit, with to the simulation oil-gas reservoir
The Micro blazed-grating light hydrocarbon gas that light hydrocarbon gas become after the simulation medium unit are sampled and analyzed.
In one embodiment, it is located in the cylinder above the unsaturated zone and is provided with air storage chamber,
The top of the cylinder is provided with the lid that can be moved, wherein the lid is provided with for balancing Atmospheric pressure
Pin hole.
In one embodiment, the saturation water reservoir is mainly made up of quartz sand, the direct cap rock it is main by
Cement and quartz sand casting are formed, and the multilayer lithology overlapped layers is mainly made up of varigrained quartz sand, institute
State unsaturated water band to be mainly made up of quartz sand layer and soil layer of sand, wherein in the multilayer lithology overlapped layers being located at
The granularity of the quartz sand of the superiors is identical with the granularity of the quartz sand of the unsaturated water band.
In one embodiment, the cylinder is divided into the cylinder section that multistage is connected to each other, the saturation water reservoir, straight
The soil layer of sand for connecing cap rock, multilayer lithology overlapped layers and unsaturated zone is placed in different cylinders section, and described many
Being arranged on positioned at the quartz sand of the superiors and the quartz sand layer of the unsaturated water band for layer lithology overlapped layers is same
In cylinder section.
In one embodiment, metal filter disc and pellicle are passed through between the gas storage chamber and saturation water reservoir
Separate.
In one embodiment, the cylinder is arranged on support, is resisted against wherein the support is provided with top
Conical side wall on the cylinder.
In one embodiment, the sampling analysis unit includes being used to gather micro- in the simulation medium unit
The sampling probe of seepage light hydrocarbon gas, wherein each layer in addition to the direct cap rock is provided with the sampling probe.
In one embodiment, the front end of the sampling probe is the ventilative mouth that blocks water for being provided with microporous hydrophobic membrane,
Air collecting chamber is set in the middle part of the sampling probe, the end of the sampling probe includes being arranged on the sampling spy
Head taper valve rod on pumping pressure cap and take airtight packing.
In one embodiment, the gas injection and airflow measurement unit include the simulation oil-gas reservoir lighter hydrocarbons that are stored with
The gas cylinder of gas, the measuring container being connected by pipeline with the gas cylinder is connected by pipeline and the measuring container
The piston container that the simulation oil-gas reservoir light hydrocarbon gas are injected into the cylinder is connect and is used for, wherein, the meter
Amount container is provided with intelligent capacitor liquid level gauge, and measuring container and the piston container is arranged in constant temperature water bath.
In one embodiment, the component of the simulation oil-gas reservoir light hydrocarbon gas is according to the composition of gas condensate reservoir moisture
Proportional arrangement.
Relative to prior art, the experimental provision for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons of the invention includes
Simulation medium unit provided with saturation water reservoir, direct cap rock, multilayer lithology overlapped layers and unsaturated zone so that
Experiment condition closer to actual geological conditions complexity, to a certain extent solution lighter hydrocarbons from saturation water stratum to
The blank of Micro blazed-grating study mechanism in phreatic surface above unsaturated zone.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.
Fig. 1 is the structural representation for being used to simulate the experimental provision of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons of the present invention.
Fig. 2 is the result of variations schematic diagram of lighter hydrocarbons during simulated experiment of the invention.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The experimental provision for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons of the present invention is included for simulated formation
Simulation medium unit.Simulation medium unit includes cylinder 9, and is arranged in cylinder 9 and stacked upwards successively
Saturation water reservoir 1a, direct cap rock 2a, multilayer lithology overlapped layers 3a and unsaturated zone 38.Wherein, multilayer
It is phreatic surface 4a between lithology overlapped layers 3a and unsaturated zone 38, below phreatic surface 4a is saturation Fluid Dynamics
Layer 37, i.e. saturation water reservoir 1a, direct cap rock 2a and multilayer lithology overlapped layers 3a are referred to as saturation water simulated formation
37.It is located in cylinder 9 below saturation water reservoir 1a and is provided with gas storage chamber 22, stores simulation oil
Gas reservoir light hydrocarbon gas.Set through the above way, lighter hydrocarbons can be simulated and enter reservoir, then passed through from oil and gas reservoir
The cap rock of full water, superstratum reach the Micro blazed-grating mechanism in phreatic surface 4a above media, are that effectively chemistry is surveyed
Visit index selection and interpretation of anomaly evaluation provides foundation, improve hydrocarbon geochemical exploration application effect, solve to a certain extent
Certainly lighter hydrocarbons are from saturation water stratum to the blank of the Micro blazed-grating study mechanism in phreatic surface 4a above unsaturated zone 38.
It can be separated between saturation water reservoir 1a and gas storage chamber 22 by metal filter disc and pellicle 23, with can
Simulation oil-gas reservoir light hydrocarbon gas are made effectively to pass through.
Saturation water reservoir 1a is main to be made up of coarse fraction (being more than 120 mesh) quartz sand, and direct cap rock 2a is main
Formed by cement and quartz sand (can be 120 mesh) casting, multilayer lithology overlapped layers 3a is main by different grain size
The quartz sand of (be, for example, 20 mesh, 80 mesh and 120 mesh) is constituted, unsaturated water band it is main by quartz sand (such as
120 mesh) layer and soil layer of sand constitute.In one example, as shown in figure 1, coarse sands layer 24 is used as saturation water
Reservoir 1a, artificial cap rock 25 is used as direct cap rock 2a, fine sand layer 26, silty sand ground 27, saturation water fine sand layer
28 and positioned at below phreatic surface 4a silty sand ground 29 as multilayer lithology overlapped layers 3a, positioned at phreatic surface 4a with
On silty sand ground 29 and sandy soils 30 be used as unsaturated zone 38 (be referred to as full gas simulated formation).Wherein,
The granularity of multilayer lithology overlapped layers 3a silty sand ground 29 is identical with the granularity of the silty sand ground 29 of unsaturated zone 38,
To facilitate setting.Design through the above way, experiment condition answering closer to actual geological conditions can be caused
Polygamy, so that the accuracy and authenticity of simulated experiment can be improved.
Further, cylinder 9 can be lucite cylinder body 9, and be divided into multistage cylinder section from top to bottom, adjacent
Two cylinders section between can be connected for example, by flange 36, be provided with seal groove on the end face of flange 36, seal
Pipeline section is closely joined together by groove built with sealing ring to connecting a Duan Houyong studs.Due to cylinder
9 height even can reach 2.9m, after cylinder 9 is segmented, can successively build and set each section, to facilitate setting
Or the filled media in replacing cylinder 9.Coarse sands layer 24, artificial cap rock 25, fine sand layer 26, silty sand ground 27,
Saturation water fine sand layer 28 is placed in different cylinders section, and positioned at below the phreatic surface 4a (multilayer of silty sand ground 29
Lithology overlapped layers 3a silty sand ground 29) and positioned at more than phreatic surface 4a silty sand ground 29 (unsaturated zone 38
Silty sand ground 29) it is located in same cylinder section, it is located at from above-mentioned each dielectric layer in different cylinders section.Pass through above-mentioned side
Formula is set, simple in construction, is conveniently replaceable and installs the filled media of each layer.
In one more specifically example, coarse sands layer is 14-16cm, and artificial cap rock 25 is 14-16cm, carefully
Layer of sand 26 is 29-31cm, and silty sand ground 27 is 39-41cm, and saturation water fine sand layer 28 is 39-41cm, flour sand
29 (the silty sand ground summation of multilayer lithology overlapped layers 3a and unsaturated zone 38) of layer are 39-41cm, sandy soils 30
For 54-56cm.That is, saturation water reservoir 1a height is 14-16cm, and direct cap rock 2a height is 14-16cm,
Multilayer lithology overlapped layers 3a height is 128-132cm, and the height of unsaturated water band is 73-77cm.By upper
The mode of stating is set, and can effectively ensure to simulate oil-gas reservoir when the height for ensureing cylinder 9 is located in safe range
The Micro blazed-grating process of light hydrocarbon gas and time, improve the accuracy and authenticity of simulated experiment.In addition, each layer
Porosity and permeability can differ, can specifically set according to specific needs.
In addition, can be provided with support in the lower end of cylinder 9, the bottom of support is tabular and sidepiece is top
The conical plate on cylinder 9 is resisted against, to support cylinder 9 by support, the steadiness of cylinder 9 is improved.
The lower end of support can also set roller, to be moved easily cylinder 9.
In addition, the top positioned at unsaturated zone 38 in cylinder 9 is provided with air storage chamber 39, cylinder 9
Top is provided with the lid 31 that can be moved, and lid 31 is provided with the pin hole 32 for balancing Atmospheric pressure.Can
Pin hole is configured to be provided with the body of eyelet on lid 31.Set through the above way, Ke Yijin
One step improves authenticity during simulation, improves the accuracy of experiment.
The experimental provision of the present invention also includes connecting with the inside of cylinder 9 so that with certain flow and pressure by pipeline
Power injects gas injection and the airflow measurement unit of simulation oil-gas reservoir light hydrocarbon gas into cylinder 9, and pipeline can be arranged on
The lower section of cylinder 9, simulation oil-gas reservoir light hydrocarbon gas are entered directly into gas storage chamber 22.Gas injection and flow
Measuring unit, which includes being stored with, simulates the gas cylinder 1 of oil-gas reservoir light hydrocarbon gas, the meter being connected by pipeline with gas cylinder 1
Container 15 is measured, is connected and for the injection simulation oil-gas reservoir into the cylinder 9 with measuring container 15 by pipeline
The piston container 10 of light hydrocarbon gas.Gas injection and airflow measurement unit also include computer 19, pressure transmitter
Output signal is handled through the detection of computer 19, can effectively control the steady of pressure in experimentation measuring container 15
It is qualitative, so that also ensure the stability of upper end gas (hydrocarbon gas) the output procedure pressure of 10 inner carrier of piston container 11,
0 type sealing ring 12 can be set on piston 11, to ensure the sealing with piston container 10.Wherein, count
Water 20 is provided with amount container 15, measuring container 15 is connected by bolt 14 with intelligent capacitor liquid level gauge 5,
The rapier of intelligent capacitor liquid level gauge 5 is placed in sealed measuring container 15, with to the liquid level in measuring container 15
The micro change of (water 20) is accurately measured, and its output signal measured is received by computer 19, from
And the simulation oil-gas reservoir light hydrocarbon gas for calculating the upper end of piston 11 of piston container 10 exactly flow within the unit interval
The minor variations of damage.
Further, it is correspondingly arranged on bottle valve 2 as needed on the pipeline for connecting each container, decompression is steady
Pressure valve 3, magnetic valve 4,8,13, manual stop valve 6,16,18, the pressure being connected with piston container 10 becomes
Send device 7, joint 17 etc..Measuring container 15 and piston container 10 are arranged in constant temperature water bath 21.
The experimental provision of the present invention also includes becoming simulation oil-gas reservoir light hydrocarbon gas after simulation medium unit
Micro blazed-grating light hydrocarbon gas (adsorb by simulation medium, it is water-soluble after, the component percentages of Micro blazed-grating light hydrocarbon gas
It is different from the component percentages for simulating oil-gas reservoir light hydrocarbon gas) the sampling analysis unit being sampled and analyzed.Adopt
Sample analytic unit includes the sampling probe being arranged in simulation medium unit, and each layer in addition to direct cap rock 2a is all provided with
It is equipped with sampling probe.Wrapped up by pellicle sampling probe front end (one end being placed in simulation medium unit)
Porous core 33 is directly contacted with constituting the ventilative mouth that blocks water with solid, liquid, gas mixture.The ventilative mouth that blocks water
Key fitment is the ventilative diaphragm that blocks water, and this is the microporous hydrophobic film that a kind of thickness only has 0.3mm, not pressure-resistant,
Only by micro-pressure-difference (generally below atmospheric pressure) effect on film both sides, gas is from the slightly higher one side of pressure to pressure
Lower slightly one side infiltration aggregation, if the both sides pressure of film is equal, but has concentration difference, gas is then expanded
Dissipate aggregation.The center section of probe is the air collecting chamber being made up of metal capillary 34, and end (is located at simulation to be situated between
The lateral ends of matter unit) it is air hatch 35, by pumping pressure cap, take airtight packing to be arranged on the cone using probe
Constituted on shape valve rod, can insert sealing gasket with the syringe needle of chromatic spectrum sample feeder when in use, be taken out from air collecting chamber
Go out gas.
In addition, when being tested, can be according to the proportion of composing of known gas condensate reservoir moisture configuration simulation oil gas
The component of light hydrocarbon gas is hidden, so that simulation oil-gas reservoir light hydrocarbon gas and the gas of oil-gas reservoir under actual geological conditions
It is similar in composition, improve experiment accuracy.
It is micro- by full water stratum, phreatic surface, full gas soil layer vertical to oil-gas reservoir lighter hydrocarbons using the simulative experimental instrument
The process and changing rule of seepage have carried out the simulation up to 1 year, and lighter hydrocarbons result of variations is as shown in Figure 2 (wherein
H represents height, and axis of abscissas represents the concentration of Micro blazed-grating lighter hydrocarbons, and 101 represent lithological profile, and 102 represent C3H8,
103 represent C2H6, 104 represent CH4), disclose Micro blazed-grating lighter hydrocarbons concentration has on stratigraphic section is vertical
Obvious cyclicity, stage；Detailed hydrocarbon concentration index cannot function as studying the efficiency index of the vertical Micro blazed-grating of oil gas.
Light hydrocarbon component concentration meets methane on phreatic surface>Ethane>The universal law of propane, external is not supported
Person's numerical simulation and known oil field measured result methane>Propane>Ethane.The above results refer to hydrocarbon geochemical exploration lighter hydrocarbons
Target, which is applied, has important indicative significance.
Although by reference to preferred embodiment, invention has been described, is not departing from the scope of the present invention
In the case of, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, only
Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment can have been combined in any way
Come.The invention is not limited in specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical schemes.
Claims (10)
1. a kind of experimental provision for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons, including：
Simulation medium unit, including cylinder, and the saturation water for being arranged in cylinder and being sequentially stacked from bottom to up
Reservoir, direct cap rock, multilayer lithology overlapped layers and unsaturated zone, wherein the multilayer lithology overlapped layers and insatiable hunger
It is phreatic surface between band, it is described to be located in saturation water simulated formation, and the cylinder below the phreatic surface
The gas storage chamber for storing simulation oil-gas reservoir light hydrocarbon gas is provided with below saturation water reservoir；
Gas injection and airflow measurement unit, pass through pipeline and the gas storage chamber so that with certain flow and
Pressure injects simulation oil-gas reservoir light hydrocarbon gas into the cylinder；And
Sampling analysis unit, is connected with the simulation medium unit, to be passed through to the simulation oil-gas reservoir light hydrocarbon gas
The Micro blazed-grating light hydrocarbon gas become after the simulation medium unit are crossed to be sampled and analyzed.
2. the experimental provision according to claim 1 for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons, its
It is characterised by, is located in the cylinder above the unsaturated zone and is provided with air storage chamber, the cylinder
Top is provided with the lid that can be moved, wherein the lid is provided with the pin hole for balancing Atmospheric pressure.
3. the experimental provision according to claim 1 or 2 for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons,
Characterized in that, the saturation water reservoir is mainly made up of quartz sand, the direct cap rock is main by cement and stone
Sand casting is formed, and the multilayer lithology overlapped layers is mainly made up of varigrained quartz sand, the unsaturation
Water band is mainly made up of quartz sand layer and soil layer of sand, wherein positioned at the superiors in the multilayer lithology overlapped layers
The granularity of quartz sand is identical with the granularity of the quartz sand of the unsaturated water band.
4. the experimental provision according to claim 3 for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons, its
It is characterised by, the cylinder is divided into the cylinder section that multistage is connected to each other, it is the saturation water reservoir, direct cap rock, many
The soil layer of sand of layer lithology overlapped layers and unsaturated zone is placed in different cylinders section, and the multilayer lithology is stacked
The be located at quartz sand of the superiors and the quartz sand layer of the unsaturated water band of layer are arranged in same cylinder section.
5. being used for according to any one of claim 1-4 simulates the experiment of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons
Device, it is characterised in that pass through metal filter disc and pellicle point between the gas storage chamber and saturation water reservoir
Every.
6. being used for according to any one of claim 1-5 simulates the experiment of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons
Device, it is characterised in that the cylinder is arranged on support, wherein the support, which is provided with top, is resisted against institute
State the conical side wall on cylinder.
7. being used for according to any one of claim 1-6 simulates the experiment of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons
Device, it is characterised in that what the sampling analysis unit included being used for gathering in the simulation medium unit micro- oozes
The sampling probe of light hydrocarbon gas is leaked, wherein each layer in addition to the direct cap rock is provided with the sampling probe.
8. the experimental provision according to claim 7 for being used to simulate the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons, its
It is characterised by, the front end of the sampling probe is the ventilative mouth that blocks water for being provided with microporous hydrophobic membrane, the sampling is visited
The middle part of head is set to air collecting chamber, and the end of the sampling probe includes being arranged on the cone valve of the sampling probe
Pumping pressure cap on bar and take airtight packing.
9. being used for according to any one of claim 1-8 simulates the experiment of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons
Device, it is characterised in that the gas injection and airflow measurement unit include the simulation oil-gas reservoir lighter hydrocarbons gas that is stored with
The gas cylinder of body, the measuring container being connected by pipeline with the gas cylinder is connected by pipeline with the measuring container
And for injecting the piston container of the simulation oil-gas reservoir light hydrocarbon gas into the cylinder, wherein, the metering
Container is provided with intelligent capacitor liquid level gauge, and measuring container and the piston container is arranged in constant temperature water bath.
10. being used for according to any one of claim 1-9 simulates the reality of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons
Experiment device, it is characterised in that the component of the simulation oil-gas reservoir light hydrocarbon gas is according to the composition of gas condensate reservoir moisture
Proportional arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610211133.2A CN107271340B (en) | 2016-04-06 | 2016-04-06 | For simulating the experimental provision of the vertical Micro blazed-grating of oil-gas reservoir lighter hydrocarbons |
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| CN109655596A (en) * | 2018-12-14 | 2019-04-19 | 广州海洋地质调查局 | A kind of multivariable condition submarine shallow gas leakage analogy method |
| CN109655595A (en) * | 2018-12-14 | 2019-04-19 | 广州海洋地质调查局 | A kind of multivariable condition submarine shallow gas leakage simulator |
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| CN109655596B (en) * | 2018-12-14 | 2021-06-29 | 广州海洋地质调查局 | Multivariable condition seabed shallow layer gas leakage simulation method |
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| CN112129470A (en) * | 2019-06-24 | 2020-12-25 | 北京工业大学 | Pipeline micro-leakage monitoring simulation experiment system of underground comprehensive pipe gallery |
| CN110361315B (en) * | 2019-08-22 | 2022-05-17 | 核工业北京地质研究院 | Device for detecting surface soil spectral change in crude oil fraction leakage process and use method |
| CN110361315A (en) * | 2019-08-22 | 2019-10-22 | 核工业北京地质研究院 | A kind of device and application method detecting topsoil spectrum change during crude oil fractions leak |
| CN113655538A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Oil and gas chemical exploration anomaly prior constraint discrimination prediction method and system |
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