CN106705835A - Method of precisely measuring volume of hydrocarbon inclusion - Google Patents
Method of precisely measuring volume of hydrocarbon inclusion Download PDFInfo
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- CN106705835A CN106705835A CN201510412238.XA CN201510412238A CN106705835A CN 106705835 A CN106705835 A CN 106705835A CN 201510412238 A CN201510412238 A CN 201510412238A CN 106705835 A CN106705835 A CN 106705835A
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- inclusion
- hydrocarbon inclusion
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- hydrocarbon
- liquid phase
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Abstract
The invention provides a method of precisely measuring the volume of a hydrocarbon inclusion. The method comprises steps: 1, a laser scanning confocal microscopy is adopted for scanning, and a three-dimensional image of the hydrocarbon inclusion is acquired; 2, under transmission light and fluorescence, a three-direction coordinate is used for demarcating the liquid-phase boundary of the three-dimensional image; 3, according to the demarcated liquid-phase boundary, the liquid-phase volume of the hydrocarbon inclusion is calculated; 4, a laser scanning confocal microscopy fluorescence spectrum is used for precisely acquiring the gas-phase diameter d and the gas-phase radius R in the hydrocarbon inclusion; and 5, according to a formula V=(4/3)piR<3>, the gas-phase volume V of the inclusion is calculated. The method of precisely measuring the volume of the hydrocarbon inclusion of the invention adopts a mode of manually synthesizing a hydrocarbon inclusion standard sample for verification, and the measurement precision is obviously improved compared with that in a previous technology.
Description
Technical field
The present invention relates to Fluid-inclusion analysis technical field, a kind of accurate measurement hydrocarbon inclusion volume is especially related to
Method.
Background technology
The focus that hydrocarbon charge reservoir fluid pressure change historic survey has become Hydrocarbon Formation Reservoirs historical analysis at present is asked
Topic.Domestic and foreign scholars begin to focus on the pressure condition and Deposits Dynamics in fluid-filled period, due to the spy of fluid inclusion
Different property, the Geochemical Characteristics of reservoir rock fluid inclusion can provide rare information for paleopressure research.
The fluid inclusion formed in into the unmixing system for hiding fluid, the pressure p of its fluid, volume V, temperature T, stream
The p-V-T-x thermodynamical equilibrium equations of determination are there is between body composition x, this turns into recent years with fluid inclusion phasor reconstruct pressure
The theoretical foundation of power history.Homogenization temperature T can be measured accurately in the p-V-T-x thermodynamical equilibrium equations of fluid inclusion, fluid
Composition x also has the new patented method can to measure in recent years, and volume V (liquid phase volume and gaseous phase volume) is surveyed by two dimension
The areal calculation substituted volume of amount, precision is inadequate.Therefore the volume V of accurate measurement fluid inclusion just turns into reconstitution fluid quilt
The key of pressure p during capture.
In recent years because the precision of tester is improved, some new method of testings can obtain 3-D view, measuring accuracy
It is more two-dimentional to be greatly improved.Such as Zhou Zhenzhu obtains fluid bag using high-resolution petrographic microscope and fluorescence microscope
The method for wrapping up in body gas liquid ratio, inclusion enclave and bubble border are delineated using mapping software, by the cumulative acquisition bag of different sections
Wrap up in body volume and final gas liquid ratio；Wang Cunwu etc. is using laser scanning co-focusing microscope and combines the acquisition of three-dimensional reconstruction software
The gas liquid ratio of inclusion enclave, Organic Inclusion bubble obtains largest air bubbles diameter using transmitted light depth scan.By to forefathers
Analysis of research achievements finds that the measuring method of hydrocarbon inclusion volume improved more more in the past, but there is also some and not yet solve
Problem certainly, i.e. inclusion gas phase boundray are still that the eyes of people determine and cause measurement error, are influence measuring accuracies
Key, while also without relevant criterion flow and verification method.It is this we have invented a kind of new accurate measurement hydro carbons bag
The method for wrapping up in body volume, solves above technical problem.
The content of the invention
There is provided to obtain the paleopressure in Hydrocarbon Formation Reservoirs period using hydrocarbon inclusion gas liquid ratio it is an object of the invention to provide a kind of
The method of the accurate measurement hydrocarbon inclusion volume of important parameter.
The purpose of the present invention can be achieved by the following technical measures：The method of accurate measurement hydrocarbon inclusion volume, the essence
Really the method for measurement hydrocarbon inclusion volume includes：Step 1, is scanned using laser confocal microscope, obtains hydro carbons
Inclusion enclave three-dimensional image；Step 2, three-dimensional image liquid phase is demarcated under transmitted light and fluorescence using three-dimensional coordinate
Border；Step 3, according to the liquid phase boundary demarcated, calculates the volume of hydrocarbon inclusion liquid phase；Step 4, it is common using laser
Focus on gas phase diameter d and gas phase radius R that micro-fluorescence spectrum is accurately obtained in hydrocarbon inclusion；Step 5, according to formula V=
(4/3)πR3Calculate the volume V of gas phase in inclusion enclave.
The purpose of the present invention can also be achieved by the following technical measures：
Step 1 includes：
Step a, selects suitable oil gas inclusion；
Step b, selects laser, and set and adjust the parameter of laser；
Step c, carries out image scanning, preserves complete series image, obtains hydrocarbon inclusion three-dimensional image；
In step a, the oil gas inclusion of selection is parcel volume morphing rule, meet homogeneous system, closed system, etc. hold
System.
Step b includes：
Selection photomultiplier tube detectors PMT, the photomultiplier tube detectors T-PMT of transmitted light collect signal and fluorescence signal
Color；
Selection laser is 488nm or 639nm, sets laser intensity as 90, and Pinhole is 3AU, and Gain values are 500, Frame
Size for 512 × 512, Speed be 7, Line step for 1, Bit is that 12, Frame is set to 4 and selects mean patterns,
Scan mode is set to Unidirectional, and scanning image size is set in Crop, and following peripheral is without other fluorescence in selection
The inclusion enclave of the individualism of interference；
According to Real Time Observation situation, adjusting parameter is set, and the live preview of sample is carried out, according to oil gas fluorescence in image
Intensity adjustment Pinhole values, Gain values, are set in scanning by focusing and according to the image under PMT, T-PMT both of which
Lower limit, setting interlamellar spacing is 0.2um.
Step 4 includes：
Selection one measures its fluorescence intensity only by the straight line 1 of liquid phase hydrocarbon inclusion, obtains pure liquid phase hydrocarbon inclusion
Fluorescence intensity spectrum；
Selection one measures its fluorescence intensity both by liquid phase further through the straight line 2 of the hydrocarbon inclusion of gas phase, obtains liquid phase
And the fluorescence intensity spectrum of the hydrocarbon inclusion comprising gas phase, two change flex points of fluorescence intensity in observation figure, and survey
Amount two flex points between apart from d1, be accurate to 0.02um；
Previous step is repeated, selection different directions are measured, and are obtained and both pass through hydrocarbon inclusion of the liquid phase further through gas phase
Straight line 3 distance, until both there is maximum d further through the straight line 4 of the hydrocarbon inclusion of gas phase by liquid phase in measurement,
It is considered gas phase diameter d, the computing formula of gas phase radius R is：
R=d/2.
The method of the accurate measurement hydrocarbon inclusion volume in the present invention, is related to gas phase and liquid phase volume in hydrocarbon inclusion
Accurate measurement, paleopressure when being embodied as Hydrocarbon Formation Reservoirs recovers to provide important parameter.The method utilizes high-resolution laser
Scanning cofocal microscope technology accurately obtains hydrocarbon inclusion three-dimensional cubic figure, and glimmering by liquid phase of the measurement comprising gas phase
Luminous intensity, the spectral intensity difference in change for obtaining is away from the gas phase diameter in acquisition inclusion enclave (precision is up to 0.02um).We
Method avoids artificial vision and determines the error that gas phase boundary strip comes, and employs artificial synthesized hydrocarbon inclusion standard sample
Verified, certainty of measurement is significantly improved compared with conventional technology.
Brief description of the drawings
Fig. 1 is the accurate method flow diagram for obtaining liquid phase volume in hydrocarbon inclusion in a specific embodiment of the invention；
Fig. 2 is accurate to obtain hydro carbons bag to utilize laser co-focusing microscopic fluorescence ionization meter in a specific embodiment of the invention
Wrap up in the gas phase diameter figure in body.
Specific embodiment
To enable above and other objects, features and advantages of the invention to become apparent, it is cited below particularly go out preferred embodiment,
And coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 is the accurate method for obtaining liquid phase volume in hydrocarbon inclusion in a specific embodiment of the invention
Flow chart.
In step 101, select suitable oil gas inclusion, parcel volume morphing rule, meet homogeneous system, closed system,
Iso-volume system.Flow enters into step 102.
In step 102, selection PMT (photomultiplier tube detectors), T-PMT (photomultiplier tube detectors of transmitted light)
Collect signal and fluorescence signal color.Flow enters into step 103.
In step 103, the parameter value such as selection laser, laser intensity.Recommended parameter value, selection laser is 488nm (639nm
Or other), laser intensity as 90 is set, Pinhole is 3AU, and Gain values are that 500, Frame size are 512 × 512,
Speed is 7, Line step for 1, Bit is that 12, Frame is set to 4 and selects mean patterns, scan mode to be set to
Scanning image size is set in Unidirectional, Crop, select as far as possible upper following peripheral without other fluorescence disturb it is independent
The inclusion enclave of presence.Flow enters into step 104.
In step 104, according to Real Time Observation situation, adjusting parameter is set.Live is clicked on, the live preview of sample is carried out,
According to the intensity adjustment Pinhole values of oil gas fluorescence, Gain values and other parameters in image.Z-Stack is clicked on, by focusing
And scanning bound is set according to the image under PMT, T-PMT both of which, setting interlamellar spacing is 0.2um (according to instrument
Spatial resolution is set).Flow enters into step 105.
In step 105, Start Experiment are selected, carry out image scanning, preserve complete series image, data selection
Series.Flow enters into step 106.
In step 106, three-dimensional image liquid phase boundary is demarcated using three-dimensional coordinate under transmitted light and fluorescence.Flow enters
To step 107.
In step 107, according to the liquid phase boundary demarcated, the volume of oil gas inclusion liquid phase is calculated using 3DforLSM softwares.
Flow terminates.
Fig. 2 is utilization laser co-focusing microscopic fluorescence ionization meter of the invention, and the accurate gas phase obtained in hydrocarbon inclusion is straight
Footpath figure.In an application specific embodiment of the invention, comprise the following steps：
In step 1, selection one measures its fluorescence intensity only by the straight line 1 of liquid phase hydrocarbon inclusion, obtains pure liquid phase
The fluorescence intensity spectrum of hydrocarbon inclusion.Flow enters into step 1.
In step 2, selection one measures its fluorescence intensity both by liquid phase further through the straight line 2 of the hydrocarbon inclusion of gas phase,
Obtain the fluorescence intensity spectrum of liquid phase and the hydrocarbon inclusion comprising gas phase.Two changes of fluorescence intensity are turned in observation figure
Point, and measure two flex points between apart from d (accurate 0.02um).Flow enters into step 3.
In step 3, repeat step 2, selection different directions are measured, and are obtained and both pass through hydro carbons of the liquid phase further through gas phase
The distance of the straight line 3 of inclusion enclave, until both occurring most further through the straight line 4 of the hydrocarbon inclusion of gas phase by liquid phase in measurement
Big value d, that is, be considered the diameter of gas phase.Flow enters into step 4.
The volume V of gas phase is calculated as follows in step 4, inclusion enclave
R=d/2
V=(4/3) π R3。
Wherein, R is gas phase radius, and d is gas phase diameter.
Flow terminates.
Claims (5)
1. the method for accurate measurement hydrocarbon inclusion volume, it is characterised in that the method for the accurate measurement hydrocarbon inclusion volume includes：
Step 1, is scanned using laser confocal microscope, obtains hydrocarbon inclusion three-dimensional image；
Step 2, demarcates the border of three-dimensional image liquid phase under transmitted light and fluorescence using three-dimensional coordinate；
Step 3, according to the liquid phase boundary demarcated, calculates the volume of hydrocarbon inclusion liquid phase；
Step 4, the gas phase diameter d and gas phase radius R in hydrocarbon inclusion are accurately obtained using laser co-focusing micro-fluorescence spectrum；
Step 5, according to formula V=(4/3) π R3Calculate the volume V of gas phase in inclusion enclave.
2. the method for accurate measurement hydrocarbon inclusion volume according to claim 1, it is characterised in that step 1 includes：
Step a, selects suitable oil gas inclusion；
Step b, selects laser, and set and adjust the parameter of laser；
Step c, carries out image scanning, preserves complete series image, obtains hydrocarbon inclusion three-dimensional image.
3. the method for accurate measurement hydrocarbon inclusion volume according to claim 2, it is characterised in that in step a, the oil gas inclusion of selection is parcel volume morphing rule, meets homogeneous system, closed system, iso-volume system.
4. the method for accurate measurement hydrocarbon inclusion volume according to claim 2, it is characterised in that step b includes：
Selection photomultiplier tube detectors PMT, the photomultiplier tube detectors T-PMT of transmitted light collect signal and fluorescence signal color；
Selection laser is 488nm or 639nm, laser intensity as 90 is set, Pinhole is 3AU, and Gain values are 500, Frame size are 512 × 512, Speed is 7, Line step for 1, Bit is 12, Frame is set to 4 and selects mean patterns, scan mode is set to Unidirectional, and scanning image size is set in Crop, the inclusion enclave of the individualism that following peripheral is disturbed without other fluorescence in selection；
According to Real Time Observation situation, adjusting parameter is set, and carries out the live preview of sample, according to intensity adjustment Pinhole values, the Gain values of oil gas fluorescence in image, scanning bound is set by focusing and according to the image under PMT, T-PMT both of which, setting interlamellar spacing is 0.2um.
5. the method for accurate measurement hydrocarbon inclusion volume according to claim 1, it is characterised in that step 4 includes：
Selection one measures its fluorescence intensity only by the straight line 1 of liquid phase hydrocarbon inclusion, obtains the fluorescence intensity spectrum of pure liquid phase hydrocarbon inclusion；
Selection one had both passed through straight line 2 of the liquid phase further through the hydrocarbon inclusion of gas phase, its fluorescence intensity is measured, the fluorescence intensity spectrum of liquid phase and the hydrocarbon inclusion comprising gas phase is obtained, two change flex points of fluorescence intensity in observation figure, and measure two flex points between apart from d1, be accurate to 0.02um；
Repeat previous step, selection different directions are measured, obtain and both pass through distance of the liquid phase further through the straight line 3 of the hydrocarbon inclusion of gas phase, until both there is maximum d further through the straight line 4 of the hydrocarbon inclusion of gas phase by liquid phase in measurement, it is considered gas phase diameter d, the computing formula of gas phase radius R is：
R=d/2.
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| CN108563890A (en) * | 2018-04-23 | 2018-09-21 | 湖南工业大学 | A kind of quartz sand gas liquid inclusion three dimensional PIC code system |
| CN112824880A (en) * | 2019-11-20 | 2021-05-21 | 中国石油天然气股份有限公司 | Method and device for acquiring gas-liquid ratio of fluid inclusion |
| CN113884420A (en) * | 2020-07-02 | 2022-01-04 | 中国石油化工股份有限公司 | Method for accurately acquiring fluorescence oil-containing porosity in clastic rock reservoir |
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| CN113884420A (en) * | 2020-07-02 | 2022-01-04 | 中国石油化工股份有限公司 | Method for accurately acquiring fluorescence oil-containing porosity in clastic rock reservoir |
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