CN108952692A - A kind of rock sample oil saturation measuring method and device - Google Patents
A kind of rock sample oil saturation measuring method and device Download PDFInfo
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- 239000011435 rock Substances 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000003921 oil Substances 0.000 claims abstract description 62
- 239000010779 crude oil Substances 0.000 claims abstract description 52
- 230000010412 perfusion Effects 0.000 claims abstract description 47
- 239000011148 porous material Substances 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims description 46
- 238000012545 processing Methods 0.000 claims description 23
- 238000004458 analytical method Methods 0.000 claims description 12
- 239000003129 oil well Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 8
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 239000011800 void material Substances 0.000 description 7
- 238000012937 correction Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001225 nuclear magnetic resonance method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012773 Laboratory assay Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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Abstract
The invention discloses a kind of rock sample oil saturation measuring method and devices, this method comprises: sample to be analysed is made in the rock sample of the destination layer of acquisition；Calculate the total volume of the gap Crude Oil of the sample to be analysed；Coloured solvent perfusion is carried out to the sample to be analysed, the volume of the rock total pore space of the sample to be analysed after perfusion is calculated；The oil saturation of sample to be analysed is calculated by the total volume of gap Crude Oil and the volume of rock total pore space.The oil saturation for realizing directly measurement rock in real time, quickly analyzes the purpose of rock oil saturation in situ of drilling well.
Description
Technical field
The present invention relates to oil exploration technology field, more particularly to a kind of rock sample oil saturation measuring method and
Device.
Background technique
In petroleum exploration and development technical field, it will usually oil saturation is measured, and oil saturation is exactly in oil reservoir
The volume of hole shared by crude oil and the percentage of the ratio between rock total pore size volume are the important parameters for evaluating reservoir oiliness.
In current research, determine that the main method of oil saturation has laboratory assays, well logging simulation calculating method
With site mud logging analytic approach.The method of lab analysis oil saturation in the analysis process oil and water loss and loose rock sample
Particle, which falls off, will affect the accuracy of measurement, and measurement the data obtained also needs inverse and correction, such that the period is longer, and
Oleophylic agent generally uses toluene that can also cause certain pollution to environment, and is difficult meet the needs of production real-time detection；Well logging
Simulation method mainly seeks oil saturation using A Erqi empirical equation, and this method is since data acquisition is easy, meter
Calculation process is simply wider in field use, but as a result, is also needed in accurately using empirical equation calculating
Oil saturation analysis data are demarcated, and error calculated is larger；Site mud logging analytic approach measurement oil saturation has
Two methods, i.e. geochemical pyrolysis method and nuclear magnetic resonance method.Geochemical pyrolysis method is to obtain rock gap degree parameter by thermogravimetry,
In conjunction with the hydrocarbonaceous amount of rock that pyrolysis obtains, rock oil saturation is sought using series of computation, due in its calculating process
The hydrocarbonaceous amount data of rock of the rock density, matrix density, oil density parameter and the correction that are repeatedly obtained using experience,
So that its calculated result accuracy is lower, scene is poor for applicability.Nuclear magnetic resonance method is the relaxation by proton in measurement rock gap
The Henan time calculates the oil saturation of rock, although this method measurement accuracy is higher, analytical cycle is generally at 24 hours
More than, and the rock sample that partial size is greater than 3mm can only be analyzed, it not can solve the analysis problem that situ of drilling well landwaste is less than 3mm.
In face of the deficiency at present to the research method of oil saturation, also to the progress of this respect in existing patented technology
Research.Such as a kind of method that fine and close oily occurrence status of test reservoir is described in patent 201511000244.0, this method
By carrying out CT scan to rock, fine and close oil, water, rock particles and gap are determined with tonal gradation, and assign every kind
The volume for depositing the densification oil of state is counted, and the volume or quality of the densification oil of every kind of occurrence status are analyzed.It is existing for drilling well
The oil bearing evaluation of field reservoir, this method are primarily present following deficiency: the data that this method obtains are to pass through x-ray bombardment
The signal generated afterwards decay to be formed gray value simulation, be not direct measured value.Its working principle is that passing through X-ray tube
Emit X-ray, ray passes through testee, and due to the relationship of testee material, density and thickness, ray is had in various degree
Decaying, detector receive ray signal, according to signal decaying generate gray scale be imaged, and then using gray value difference
Differentiate the distribution of oil, water, rock particles and hole in rock sample；The analysis object of this method is fresh rock-like
Product cannot analyze the chip sample of small particle, cannot carry out Reservoir oil-bearing property evaluation to the well of non-coring；Distinguish oil, water, rock
It when stone particle and hole is distinguished with gray value, it is big by Human disturbance factor, it is high to analysis personnel's skill requirement；It should
Technology be related to radioactivity risk, it is complicated for operation, not can be carried out with bore analysis, timeliness it is poor, be not able to satisfy site operation scheme and
When the requirement disposed；This method is mainly the microcosmic occurrence status of the fine and close oil of quantitative analysis, is mainly used in field of petroleum exploitation,
Do not refer to that oil saturation calculates, and oil saturation is the important parameter of Reservoir oil-bearing property evaluation.
Summary of the invention
It is directed to the above problem, the present invention provides a kind of rock sample saturation degree measuring method and device, realizes directly
The oil saturation for measuring rock in real time, quickly analyzes the purpose of rock oil saturation in situ of drilling well.
To achieve the goals above, according to the first aspect of the invention, a kind of rock sample saturation degree measurement side is provided
Method, this method comprises:
Sample to be analysed is made in the rock sample of the destination layer of acquisition；
Calculate the total volume of the gap Crude Oil of the sample to be analysed；
Coloured solvent perfusion is carried out to the sample to be analysed, the rock of the sample to be analysed after perfusion is calculated
The volume of total pore space；
Calculate the oil saturation S of the sample to be analysed0, wherein S0=V0/Vp× 100%, V0For the sample to be analyzed
Oily total volume, V in the gap of productpFor the volume of the rock total pore space of the sample to be analysed after perfusion.
Preferably, the total volume of the gap Crude Oil for measuring the sample to be analysed, comprising:
The sample to be analysed is subjected to laser confocal scanning, the three-dimensional structure for obtaining crude oil and rock matrix is three-dimensional
Figure；
Lift-off processing is carried out to the three-dimensional structure perspective view of the crude oil and rock matrix, obtains crude oil perspective view and rock
Skeleton perspective view；
According to the crude oil perspective view and the rock matrix perspective view, it is calculated in the gap of the sample to be analysed
The total volume of crude oil.
Preferably, described that coloured solvent perfusion is carried out to the sample to be analysed, it measures described wait divide after being perfused
Analyse the volume of the rock total pore space of sample, comprising:
The coloured solvent is filled into the rock gap of the sample to be analysed, it is described to be analyzed after being perfused
Sample；
Laser confocal scanning is carried out to the sample to be analysed after the perfusion, obtains the three of gap and rock matrix
Tie up structural perspective；
Lift-off processing is carried out to the three-dimensional structure perspective view in the gap and rock matrix, obtains gap perspective view and rock
Skeleton perspective view；
It is described to be analyzed after the perfusion is calculated according to the gap perspective view and the rock matrix perspective view
The volume of the rock total pore space of sample.
Preferably, the rock sample of the destination layer of the acquisition is the fresh core or landwaste sample of oil wells in field acquisition
Product.
According to the second aspect of the invention, a kind of rock sample oil saturation measurement device is provided, which includes:
Sample making module, for sample to be analysed to be made in the rock sample of the destination layer of acquisition；
First computing module, the total volume of the gap Crude Oil for calculating the sample to be analysed；
Second computing module, for carrying out coloured solvent perfusion to the sample to be analysed, the institute after perfusion is calculated
State the volume of the rock total pore space of sample to be analysed；
Third computing module, for calculating the oil saturation S of the sample to be analysed0, wherein S0=V0/Vp×
100%, V0Oily total volume, V in gap for the sample to be analysedpRock for the sample to be analysed after perfusion is total
The volume of hole.
Preferably, first computing module includes:
First scanning element obtains crude oil and rock bone for the sample to be analysed to be carried out laser confocal scanning
The three-dimensional structure perspective view of frame；
First processing units carry out lift-off processing for the three-dimensional structure perspective view to the crude oil and rock matrix, obtain
To crude oil perspective view and rock matrix perspective view；
First computing unit, it is described for being calculated according to the crude oil perspective view and the rock matrix perspective view
The total volume of the gap Crude Oil of sample to be analysed.
Preferably, second computing module includes:
Perfusion processing unit is obtained for the coloured solvent to be filled into the rock gap of the sample to be analysed
The sample to be analysed after perfusion；
Second scanning element is obtained for carrying out laser confocal scanning to the sample to be analysed after the perfusion
The three-dimensional structure perspective view in gap and rock matrix；
The second processing unit carries out lift-off processing for the three-dimensional structure perspective view to the gap and rock matrix, obtains
To gap perspective view and rock matrix perspective view；
Second computing unit, it is described for being calculated according to the gap perspective view and the rock matrix perspective view
The volume of the rock total pore space of the sample to be analysed after perfusion.
Compared to the prior art, first sample to be analysed is made in the rock sample of the destination layer of acquisition by the present invention, then
The total volume of the gap Crude Oil of the sample to be analysed is calculated, then by the perfusion of coloured solvent, after perfusion is calculated
The sample to be analysed rock total void volume, the last total volume according to the gap Crude Oil of the sample to be analysed
With the volume of the rock total void of the sample to be analysed after perfusion, the oil-containing saturation for obtaining the sample to be analysed is calculated
Degree.The present invention passes through the directly total volume of the gap Crude Oil of calculating sample to be analysed and the sample to be analysed after perfusion
The volume of rock total void, then the oil saturation for obtaining sample to be analysed is calculated, it is counted indirectly not over other parameters
It calculates, realizes the purpose of the directly oil saturation of measurement rock, and obtained calculated result is without correction, measurement accuracy
Height, strong real-time, safety and environmental protection real-time, quick in situ of drilling well can analyze rock oil saturation, comment for reservoir oiliness
Valence provides foundation, instructs site operation plan implementation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow diagram for rock sample oil saturation measuring method that the embodiment of the present invention one provides；
Fig. 2 is the calculating gap Crude Oil total volume in the embodiment of the present invention two in S12 step shown in corresponding Fig. 1
Flow diagram；
Fig. 3 is the stream of the calculating rock total void volume in the embodiment of the present invention two in S13 step shown in corresponding Fig. 1
Journey schematic diagram；
A kind of structural schematic diagram for rock sample oil saturation measurement device that Fig. 4 embodiment three provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Term " first " and " second " in description and claims of this specification and above-mentioned attached drawing etc. are for area
Not different objects, rather than for describing specific sequence.Furthermore term " includes " and " having " and their any deformations,
It is intended to cover and non-exclusive includes.Such as it contains the process, method of a series of steps or units, system, product or sets
It is standby not to be set in listed step or unit, but may include the step of not listing or unit.
Embodiment one
Referring to the process signal that Fig. 1 is a kind of rock sample oil saturation measuring method that the embodiment of the present invention one provides
Figure, method includes the following steps:
S11, sample to be analysed is made in the rock sample of the destination layer of acquisition；
Specifically, the rock sample of the destination layer of the acquisition is the fresh core or landwaste sample of oil wells in field acquisition
Product.The rock sample of collection in worksite is subjected to freezing film-making, is to carry out cutting sample in 0-5 DEG C of ground temperature environment, it is ensured that when grinding
Original form of fluid will not be destroyed in gap.
S12, calculate the sample to be analysed gap Crude Oil total volume；
S13, coloured solvent perfusion is carried out to the sample to be analysed, the sample to be analysed after perfusion is calculated
The volume of rock total pore space；
S14, the oil saturation S for calculating the sample to be analysed0, wherein S0=V0/Vp× 100%, V0To be described wait divide
Analyse total volume oily in the gap of sample, VpFor the volume of the rock total pore space of the sample to be analysed after perfusion.
The rock sample of the destination layer of acquisition is made wait divide first for technical solution disclosed in one through the embodiment of the present invention
Sample is analysed, then calculates the total volume of the gap Crude Oil of the sample to be analysed, then by the perfusion of coloured solvent, calculate
The volume of the rock total void of the sample to be analysed after being perfused, finally according to the gap Central Plains of the sample to be analysed
The volume of the rock total void of the total volume and sample to be analysed after perfusion of oil, calculates and obtains the sample to be analysed
Oil saturation.The present invention is described wait divide by the directly total volume of the gap Crude Oil of calculating sample to be analysed and after perfusion
Analyse sample rock total void volume, then calculate obtain sample to be analysed oil saturation, not over other parameters into
Calculating is in the ranks connect, realizes the purpose of the directly oil saturation of measurement rock, and obtained calculated result is surveyed without correction
Accuracy of measurement height, strong real-time, safety and environmental protection real-time, quick in situ of drilling well can analyze rock oil saturation, contain for reservoir
Oiliness evaluation provides foundation, instructs site operation plan implementation.
Embodiment two
The detailed process of S11 to the S14 step referring to described in the embodiment of the present invention one and Fig. 1, when obtaining wait divide
It after analysing sample, needs to calculate the total volume of the gap Crude Oil of the sample to be analysed, is that the present invention is implemented referring specifically to Fig. 2
The flow diagram of calculating gap Crude Oil total volume in example two in S12 step shown in corresponding Fig. 1, the step S12
It specifically includes:
S121, the sample to be analysed is subjected to laser confocal scanning, obtains the three-dimensional structure of crude oil and rock matrix
Perspective view；
S122, lift-off processing is carried out to the three-dimensional structure perspective view of the crude oil and rock matrix, obtains crude oil perspective view
With rock matrix perspective view；
S123, according to the crude oil perspective view and the rock matrix perspective view, the sample to be analysed is calculated
The total volume of gap Crude Oil.
Correspondingly, total for the calculating rock in S13 step shown in corresponding Fig. 1 in the embodiment of the present invention two referring to Fig. 3
The flow diagram of voidage, the step S13 are specifically included:
S131, the coloured solvent is filled into the rock gap of the sample to be analysed, it is described after being perfused
Sample to be analysed；
S132, laser confocal scanning is carried out to the sample to be analysed after the perfusion, obtains gap and rock bone
The three-dimensional structure perspective view of frame；
S133, lift-off processing is carried out to the three-dimensional structure perspective view in the gap and rock matrix, obtains gap perspective view
With rock matrix perspective view；
S134, according to the gap perspective view and the rock matrix perspective view, it is described after the perfusion is calculated
The volume of the rock total pore space of sample to be analysed.
Specifically, all referring to the lift-off technology of figure in above-mentioned steps S122 and step S133, technique is to pass through
What existing software was realized automatically, the specific type of software is not limited in the present invention；The process of volume is calculated simultaneously
Calculate acquisition automatically also with software.And be analysed to sample carry out laser confocal scanning refer to analyze twice all into
Row rock sample scans comprehensively, it is ensured that surveyed visual threshold is the same area in step S121 and step S132.
Technical solution disclosed according to embodiments of the present invention two passes through laser co-focusing pair after obtaining sample to be analysed
It is scanned the three-dimensional structure perspective view for obtaining crude oil and rock matrix, and is aligned using software and carries out lift-off processing, calculates
Obtain the total volume of the gap Crude Oil of the sample to be analysed；Then the coloured solvent is filled into the sample to be analysed
Rock gap in, the sample to be analysed after being perfused, to after the perfusion the sample to be analysed carry out laser
Confocal scanning, obtains the three-dimensional structure perspective view in gap and rock matrix, and institute is calculated after carrying out lift-off processing to it
The volume of the rock total pore space of the sample to be analysed after stating perfusion finally calculates the oil saturation of sample to be analysed.?
It is calculated indirectly in the present embodiment not over other parameters, directly calculating is analyzed by software and obtains the sample to be analyzed
Then the volume of the rock total pore space of the total volume and sample to be analysed of the gap Crude Oil of product calculates and obtains rock
Oil saturation, and obtained calculated result, without correction, measurement accuracy height, strong real-time, safety and environmental protection can be in drilling wells
Live real-time, quick analysis rock oil saturation, provides foundation for Reservoir oil-bearing property evaluation, instructs site operation scheme portion
Administration.
Embodiment three
It is corresponding with rock sample oil saturation measuring method disclosed in the embodiment of the present invention one and embodiment two, this
The embodiment three of invention additionally provides a kind of rock sample oil saturation measurement device, provides referring to fig. 4 for embodiment three
A kind of structural schematic diagram of rock sample oil saturation measurement device, the device include:
Sample making module 1, for sample to be analysed to be made in the rock sample of the destination layer of acquisition；
First computing module 2, the total volume of the gap Crude Oil for calculating the sample to be analysed；
Second computing module 3, for carrying out coloured solvent perfusion to the sample to be analysed, the institute after perfusion is calculated
State the volume of the rock total pore space of sample to be analysed；
Third computing module 4, for calculating the oil saturation S of the sample to be analysed0, wherein S0=V0/Vp×
100%, V0Oily total volume, V in gap for the sample to be analysedpRock for the sample to be analysed after perfusion is total
The volume of hole.
Correspondingly, first computing module 1 includes:
First scanning element 11 obtains crude oil and rock for the sample to be analysed to be carried out laser confocal scanning
The three-dimensional structure perspective view of skeleton；
First processing units 12 carry out lift-off processing for the three-dimensional structure perspective view to the crude oil and rock matrix,
Obtain crude oil perspective view and rock matrix perspective view；
First computing unit 13, for institute to be calculated according to the crude oil perspective view and the rock matrix perspective view
State the total volume of the gap Crude Oil of sample to be analysed.
Corresponding, second computing module 3 includes:
Perfusion processing unit 31 is obtained for the coloured solvent to be filled into the rock gap of the sample to be analysed
The sample to be analysed after to perfusion；
Second scanning element 32 is obtained for carrying out laser confocal scanning to the sample to be analysed after the perfusion
Obtain the three-dimensional structure perspective view in gap and rock matrix；
The second processing unit 33 carries out lift-off processing for the three-dimensional structure perspective view to the gap and rock matrix,
Obtain gap perspective view and rock matrix perspective view；
Second computing unit 34, for institute to be calculated according to the gap perspective view and the rock matrix perspective view
The volume of the rock total pore space of the sample to be analysed after stating perfusion.
In the embodiment of the present invention three, sample to be analysed is obtained by sample making module, in the first computing module and
The total volume V for obtaining the gap Crude Oil of the sample to be analysed is calculated separately in second computing module0With it is described to be analyzed
The volume V of the rock total pore space of samplep, finally according to formula S in third computing module0=V0/Vp, calculating obtains described
The oil saturation S of sample to be analysed0.The oil saturation of rock can be directly measured in the present embodiment, rather than pass through it
Its parameter calculates indirectly, without correction, measurement accuracy height, strong real-time, safety and environmental protection, and can analyze small particle rock sample,
The production needs of situ of drilling well can be met.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of rock sample oil saturation measuring method, which is characterized in that this method comprises:
Sample to be analysed is made in the rock sample of the destination layer of acquisition；
Calculate the total volume of the gap Crude Oil of the sample to be analysed；
Coloured solvent perfusion is carried out to the sample to be analysed, the total hole of rock of the sample to be analysed after perfusion is calculated
The volume of gap；
Calculate the oil saturation S of the sample to be analysed0, wherein S0=V0/Vp× 100%, V0For the sample to be analysed
Oily total volume, V in gappFor the volume of the rock total pore space of the sample to be analysed after perfusion.
2. the method according to claim 1, wherein the gap Crude Oil for measuring the sample to be analysed
Total volume, comprising:
The sample to be analysed is subjected to laser confocal scanning, obtains the three-dimensional structure perspective view of crude oil and rock matrix；
Lift-off processing is carried out to the three-dimensional structure perspective view of the crude oil and rock matrix, obtains crude oil perspective view and rock matrix
Perspective view；
According to the crude oil perspective view and the rock matrix perspective view, the gap Crude Oil of the sample to be analysed is calculated
Total volume.
3. the method according to claim 1, wherein described carry out coloured solvent filling to the sample to be analysed
Note measures the volume of the rock total pore space of the sample to be analysed after being perfused, comprising:
The coloured solvent is filled into the rock gap of the sample to be analysed, the sample to be analyzed after being perfused
Product；
Laser confocal scanning is carried out to the sample to be analysed after the perfusion, obtains the three-dimensional knot of gap and rock matrix
Structure perspective view；
Lift-off processing is carried out to the three-dimensional structure perspective view in the gap and rock matrix, obtains gap perspective view and rock matrix
Perspective view；
The sample to be analysed according to the gap perspective view and the rock matrix perspective view, after the perfusion is calculated
Rock total pore space volume.
4. the method according to claim 1, wherein the rock sample of the destination layer of the acquisition is oil wells in field
The fresh core or chip sample of acquisition.
5. a kind of rock sample oil saturation measurement device, which is characterized in that the device includes:
Sample making module, for sample to be analysed to be made in the rock sample of the destination layer of acquisition；
First computing module, the total volume of the gap Crude Oil for calculating the sample to be analysed；
Second computing module, for carrying out coloured solvent perfusion to the sample to be analysed, after perfusion is calculated it is described to
Analyze the volume of the rock total pore space of sample；
Third computing module, for calculating the oil saturation S of the sample to be analysed0, wherein S0=V0/Vp× 100%, V0
Oily total volume, V in gap for the sample to be analysedpFor the body of the rock total pore space of the sample to be analysed after perfusion
Product.
6. device according to claim 5, which is characterized in that first computing module includes:
First scanning element obtains crude oil and rock matrix for the sample to be analysed to be carried out laser confocal scanning
Three-dimensional structure perspective view；
First processing units carry out lift-off processing for the three-dimensional structure perspective view to the crude oil and rock matrix, obtain original
Oily perspective view and rock matrix perspective view；
First computing unit, it is described wait divide for being calculated according to the crude oil perspective view and the rock matrix perspective view
Analyse the total volume of the gap Crude Oil of sample.
7. device according to claim 5, which is characterized in that second computing module includes:
Perfusion processing unit is perfused for the coloured solvent to be filled into the rock gap of the sample to be analysed
The sample to be analysed afterwards；
Second scanning element obtains gap for carrying out laser confocal scanning to the sample to be analysed after the perfusion
With the three-dimensional structure perspective view of rock matrix；
The second processing unit carries out lift-off processing for the three-dimensional structure perspective view to the gap and rock matrix, obtains sky
Gap perspective view and rock matrix perspective view；
Second computing unit, for the perfusion to be calculated according to the gap perspective view and the rock matrix perspective view
The volume of the rock total pore space of the sample to be analysed afterwards.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110008504A (en) * | 2019-02-11 | 2019-07-12 | 中国石油天然气集团有限公司 | A kind of Fluid Identification Method comprehensively utilizing dielectric logging and nuclear magnetic resonance log |
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