CN106770278A - A kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source - Google Patents
A kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source Download PDFInfo
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- CN106770278A CN106770278A CN201610985115.XA CN201610985115A CN106770278A CN 106770278 A CN106770278 A CN 106770278A CN 201610985115 A CN201610985115 A CN 201610985115A CN 106770278 A CN106770278 A CN 106770278A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
Abstract
The invention belongs to oil and gas exploration and development technique field, it is related to a kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source, the detection of the saline inclusion homogenization temperature and in-situ micro area of oxygen isotope is detected during to quartz secondary in by the quartz secondary to micron level in sandstone reservoir, determine that reservoir precipitates the temperature and oxygen isotope of the ancient Diagenesis fluids of quartz cement during burying, and time and fluid origin that ancient Diagenesis fluids occur can be determined, solve related to quartz cement ancient Diagenesis fluids source in oil-gas bearing basin clastic reservoir rock determines problem.
Description
Technical field
The invention belongs to oil and gas exploration and development technique field, specifically, it is related to one kind to determine sandstone reservoir
The method in middle ancient times Diagenesis fluids source.
Background technology
During oil-gas bearing basin burial diagenesis, mineral dissolution effect and cementation are to reservoir quality evolution tool in basin
There is important control action.Quartz cement is one of common cement in rich arkose reservoir, its precipitation process usually companion
It is a kind of accessory substance of feldspar solution effect with the dissolving of the aluminium silicate minerals such as feldspar.The secondary pore that feldspar solution is formed
Reservoir quality can be effectively improved, but hole can not preserve ancient Diagenesis fluids information.Quartz cement with precipitation can have
Effect ground preserves the oxygen isotope information of fluid, and this kind of isotope can be efficiently used for the identification of fluid origin, therefore, study stone
The forming process of English cement and related Gu Diagenesis fluids feature, it is also possible to effectively disclose dissolving feldspar-precipitation in sandstone reservoir
The property of the ancient Diagenesis fluids of quartz and source.
However, the size of the quartz cement in sandstone reservoir generally only reaches micro-meter scale, as a kind of important stone
English cement, the thickness on quartz secondary side is generally less than 80um, and it has been carried out with other rock compositions or clastic quitz particle
Fully separating purification difficulty is very big, and separating-purifying complex steps, and separating effect is undesirable, is often accompanied by after separation various miscellaneous
Matter, causes not yet have the method for effectively recognizing relative ancient Diagenesis fluids source.
The content of the invention
The present invention cannot effectively recognize the above-mentioned deficiencies such as ancient Diagenesis fluids source for what prior art was present, there is provided a kind of
Determine the sandstone reservoir middle ancient times Diagenesis fluids source method, can high-resolution, accurately identification contain oil-and-gas basin chip
The source of the ancient Diagenesis fluids related to quartz cement, has directive significance for the prediction of reservoir quality in rock stratum.
The technical scheme is that：A kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source, contains following step
Suddenly：
Take sandstone reservoir cores and grind the petrographic thin section that thickness is 100um twin polishings；
Found using ordinary optical microscope and cathodoluminescence microscope and differentiate the quartz secondary side of petrographic thin section, utilized
The saline inclusion and hydrocarbon inclusion in quartz secondary side are found and differentiated to fluorescence microscope；
Salt solution in selected quartz secondary side is wrapped up with cold and hot of the microscope supporting with it using light microscope
Body homogenization temperature detected, obtains the temperature of ancient Diagenesis fluids during quartz precipitation；
The region containing quartz secondary side in petrographic thin section is drilled through using micro-, multiple test samples is obtained, by test sample
It is embedded into jointly in transparent resin adhesive post with standard quartz sample, makes plastic post sample, glue post sample surfaces is polished
Treatment；
Observation photograph is carried out to the glue post sample after polishing using ordinary optical microscope and cathodoluminescence microscope
And picture mosaic, the preliminary position chosen on quartz secondary side for the detection of in-situ micro area oxygen isotope；
The quartz secondary border area domain to be analyzed is selected using secondary ion microprobe mass spectrometer, is selected using ion beam bombardment
Quartz secondary border area domain, carries out the test of standard quartz sample and quartz secondary side in-situ micro area oxygen isotope, obtains quartz and adds
Big side oxygen isotope information；
Situ oxygen Isotope Information is mutually tied and thrown when by quartz secondary, saline inclusion homogenization temperature is with quartz secondary in
Shadow is obtained on quartz mineral oxygen isotope-fluid Oxygen Isotope Fractionation between Quartz figure in quartzy precipitation process under condition of different temperatures
The oxygen isotope value of the ancient Diagenesis fluids of quartz cement must be precipitated, the source of ancient Diagenesis fluids is judged according to oxygen isotope value.
Used as decision design, in the above-mentioned method for determining sandstone reservoir middle ancient times Diagenesis fluids source, the test sample is
The wafer sample of diameter 3mm, a diameter of 2.5cm of the transparent resin adhesive post.
As decision design, it is above-mentioned determine the sandstone reservoir middle ancient times Diagenesis fluids source method in, according to mineral list polarisation,
Orthogonal optical, reflected light and cathodoluminescence feature, the preliminary position chosen on quartz secondary side for situ oxygen isotope detection.
As decision design, in the above-mentioned method for determining sandstone reservoir middle ancient times Diagenesis fluids source, the beam of the ion beam
Spot diameter is 15um.
As decision design, in the above-mentioned method for determining sandstone reservoir middle ancient times Diagenesis fluids source, described petrographic thin section
At least grind one.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) a kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source that the present invention is provided, by sandstone reservoir
The quartz secondary of middle micron level in the detection of saline inclusion homogenization temperature and during to quartz secondary oxygen isotope high score
Resolution, the detection of high-precision in-situ micro area, effectively determine and the ancient into rock flow of quartz cement are precipitated during reservoir is buried
The temperature and oxygen isotope of body, and time and fluid origin that ancient Diagenesis fluids occur can be determined, solve oil-gas bearing basin
What ancient Diagenesis fluids related to quartz cement in clastic reservoir rock were originated determines problem.
(2) a kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source that the present invention is provided, principle is simple, practicality
And strong operability, have effectively achieved and ancient Diagenesis fluids property is really determined by spontaneous diagenesis mineral spirits on reservoir micro-scale
And source, there is highly important directive significance to the prediction of reservoir quality.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the method for determining sandstone reservoir middle ancient times Diagenesis fluids source of the present invention.
Fig. 2 is that Bohai gulf basin Shengtuo region in Dongying depression 720 well depths that stick together are in the specific embodiment of the invention 1
At 3535.0m Quartz Crystals In Sandstone Reservoirs increase while and during quartz secondary in saline inclusion characteristic pattern.
Fig. 3 is that Bohai gulf basin Shengtuo region in Dongying depression 720 well depths that stick together are in the specific embodiment of the invention 1
Sandstone reservoir quartz secondary side saline inclusion homogenization temperature distribution histogram at 3535.0m.
Fig. 4 is that Bohai gulf basin Shengtuo region in Dongying depression 720 well depths that stick together are in the specific embodiment of the invention 1
Quartz particles and quartz secondary side SIMS microcell oxygen isotope test point characteristic pattern during reflected light at 3535.0m.
Fig. 5 is that Bohai gulf basin Shengtuo region in Dongying depression 720 well depths that stick together are in the specific embodiment of the invention 1
Lu Yuan quartz particles and spontaneous quartz secondary side Oxygen Isotope Distribution Characteristics figure in sandstone reservoir at 3535.0m.
Fig. 6 be quartz mineral oxygen isotope in quartzy precipitation process under condition of different temperatures in the specific embodiment of the invention 1-
Fluid Oxygen Isotope Fractionation between Quartz and victory stick together area stick together 720 well depths for 3535.0m place Quartz Crystals In Sandstone Reservoirs increase side in stream
The O isotopes figure of body inclusion enclave homogenization temperature and the ancient Diagenesis fluids of quartz secondary side oxygen isotope data reflection.
Fig. 7 be the specific embodiment of the invention 2 in Nanpu Sag of Bohai Bay Basin Gaoliu area 62 well depth high be 3676.0m
Place's Quartz Crystals In Sandstone Reservoirs increase while and during quartz secondary in saline inclusion characteristic pattern.
Fig. 8 be the specific embodiment of the invention 2 in Nanpu Sag of Bohai Bay Basin Gaoliu area 62 well depth high be 3676.0m
Place sandstone reservoir quartz secondary side saline inclusion homogenization temperature distribution histogram.
Fig. 9 be the specific embodiment of the invention 2 in Nanpu Sag of Bohai Bay Basin Gaoliu area 62 well depth high be 3676.0m
Quartz particles and quartz secondary side SIMS microcell oxygen isotope test point characteristic pattern during place's reflected light.
Figure 10 be the specific embodiment of the invention 2 in Nanpu Sag of Bohai Bay Basin Gaoliu area 62 well depth high be
Lu Yuan quartz particles and spontaneous quartz secondary side Oxygen Isotope Distribution Characteristics figure in sandstone reservoir at 3676.0m.
Figure 11 is the same position of quartz mineral oxygen in quartzy precipitation process under condition of different temperatures in the specific embodiment of the invention 2
Element-fluid Oxygen Isotope Fractionation between Quartz and Gaoliu area 62 well depth high are fluid in quartz secondary side in reservoir at 3676.0m
The O isotopes figure of inclusion enclave homogenization temperature and the ancient Diagenesis fluids of quartz secondary side oxygen isotope data reflection.
In figure, Q, quartz particles, Qa, quartz secondary side.
Specific embodiment
Below, the present invention is specifically described by exemplary implementation method.
A kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source is the embodiment of the invention provides, contains following step
Suddenly：
Take sandstone reservoir cores and grind the petrographic thin section that thickness is 100um twin polishings；
Found using ordinary optical microscope and cathodoluminescence microscope and differentiate the quartz secondary side of petrographic thin section, utilized
The saline inclusion and hydrocarbon inclusion in quartz secondary side are found and differentiated to fluorescence microscope；
Salt solution in selected quartz secondary side is wrapped up with cold and hot of the microscope supporting with it using light microscope
Body homogenization temperature detected, obtains the temperature of ancient Diagenesis fluids during quartz precipitation；
The region containing quartz secondary side in petrographic thin section is drilled through using micro-, multiple test samples is obtained, by test sample
It is embedded into jointly in transparent resin adhesive post with standard quartz sample, makes plastic post sample, glue post sample surfaces is polished
Treatment；
Observation photograph is carried out to the glue post sample after polishing using ordinary optical microscope and cathodoluminescence microscope
And picture mosaic, the preliminary position chosen on quartz secondary side for the detection of in-situ micro area oxygen isotope；
The quartz secondary border area domain to be analyzed is selected using secondary ion microprobe mass spectrometer, is selected using ion beam bombardment
Quartz secondary border area domain, carries out the test of standard quartz sample and quartz secondary side in-situ micro area oxygen isotope, obtains quartz and adds
Big side oxygen isotope information；
Situ oxygen Isotope Information is mutually tied and thrown when by quartz secondary, saline inclusion homogenization temperature is with quartz secondary in
Shadow is obtained on quartz mineral oxygen isotope-fluid Oxygen Isotope Fractionation between Quartz figure in quartzy precipitation process under condition of different temperatures
The oxygen isotope value of the ancient Diagenesis fluids of quartz cement must be precipitated, the source of ancient Diagenesis fluids is judged according to oxygen isotope value.
Due to often developing " dirt line " between quartz particles and quartz secondary side, by the transmission optical mode of ordinary optical microscope
Formula or reflected light pattern, quartz particles and quartz secondary side are distinguished using " dirt line ", under cathodoluminescence microscope, quartz
Grain and quartz secondary side typically exhibit different colors, and quartz particles are pewter, and quartz secondary side is grey black or brown, profit
Being capable of effective district point quartz particles and quartz secondary side with cathodoluminescence microscope.Therefore, using ordinary optical microscope and the moon
The quartz secondary side of petrographic thin section can effectively be found and be identified to pole illuminating microscope.
Because under fluorescence microscope, the reaction of saline inclusion unstressed configuration is still presented black, hydro carbons bag under fluorescence irradiation
Wrap up in body and brown color, brown, light blue etc. are presented under fluorescence irradiation, therefore, can effectively find and reflect using fluorescence microscope
Do not go out saline inclusion and hydrocarbon inclusion.
In an embodiment of the present invention, the test sample can use different size and shape, specifically can be according to reality
Border requirement of experiment is chosen, and the diameter of the transparent resin adhesive post can determine according to the quantity of test sample and size.
In one embodiment of the present invention, the test sample for diameter 3mm wafer sample, the transparent resin adhesive post it is a diameter of
2.5cm。
In a preferred embodiment, according to mineral list polarisation, orthogonal optical, reflected light and cathodoluminescence feature, just
Step chooses the position for situ oxygen isotope detection on quartz secondary side.
In an embodiment of the present invention, the beam spot diameter, of the ion beam can be according to selected quartz secondary border area domain
Size is selected.In a preferred embodiment, the beam spot diameter, of the ion beam is 15um.
In an embodiment of the present invention, the petrographic thin section at least grinds one, can grind one, two, three, four
, five, six, seven, eight.In a preferred embodiment, petrographic thin section grinds three or five.
In an embodiment of the present invention, the secondary ion microprobe mass spectrometer uses Camera IMS-1280 secondary ions
Microprobe mass spectrometer.
Embodiment 1：Sticked together 720 well depths as 3535.0m sandstone with Eastern China Bohai gulf basin Shengtuo region in Dongying depression
As a example by reservoir, it is further detailed with reference to accompanying drawing.
A kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source, referring to Fig. 1, contains following steps：
Step one：The win victory area that sticks together sticks together 720 well depths for 3535.0m locates rock core, and it is 100um twin polishings to grind thickness
Petrographic thin section three.
Step 2：The quartz secondary of petrographic thin section is found and differentiated using ordinary optical microscope and cathodoluminescence microscope
Side, finds and differentiates the saline inclusion and hydrocarbon inclusion in quartz secondary side using fluorescence microscope.
Given referring to Fig. 2, in Fig. 2 victory stick together regional Quartz Crystals In Sandstone Reservoirs increase while and during quartz secondary in salt solution parcel
Body characteristicses.
Step 3：Using light microscope and cold and hot of the microscope supporting with it is to the salt in the quartz secondary side selected
Water inclusion enclave homogenization temperature detected, obtains the temperature of ancient Diagenesis fluids during quartz precipitation.Saline inclusion homogenization temperature is examined
Result is surveyed referring to Fig. 3, regional sandstone reservoir 720 well depths that stick together are salt in quartz secondary side at 3535.0m from the figure 3, it may be seen that victory sticks together
Water inclusion enclave homogenization temperature is mostly in 105~125 DEG C.
Step 4：The region containing quartz secondary side in petrographic thin section is drilled through using micro-, 5 disks of diameter 3mm are obtained
Sample, 5 wafer samples and standard quartz sample are embedded into the transparent resin adhesive post of diameter 2.5cm jointly, make plastic
Glue post sample surfaces are processed by shot blasting by post sample.Described standard quartz sample is quartz particles.
Step 5：The glue post sample after polishing is seen using ordinary optical microscope and cathodoluminescence microscope
Photograph and picture mosaic are examined, it is preliminary to choose on quartz secondary side according to mineral list polarisation, orthogonal optical, reflected light and cathodoluminescence feature
For the position of situ oxygen isotope detection.
Step 6：The quartz secondary border area to be analyzed is selected using Camera I MS-1280 secondary ions microprobe mass spectrometer
Domain, is the selected quartz secondary border area domain of the ion beam bombardment of 15um using beam spot diameter, carries out quartz particles and quartz secondary
The test of side original position oxygen isotope, obtains quartz secondary side oxygen isotope information.Quartz particles and quartz secondary side in-situ micro area
The feature of oxygen isotope test point indicates analysis site position referring to Fig. 4, the arrow in Fig. 4.Oxygen isotope test result is referring to figure
5, as shown in Figure 5, victory regional sandstone reservoir 720 well depths that stick together that stick together are oxygen isotope scope master in quartz secondary side at 3535.0m
Will be between 20 ‰~24 ‰.
Step 7：By quartz secondary in saline inclusion homogenization temperature and situ oxygen Isotope Information phase during quartz secondary
Knot and, project under condition of different temperatures quartz mineral oxygen isotope-fluid Oxygen Isotope Fractionation between Quartz in quartzy precipitation process
On figure, referring to Fig. 6, the oxygen isotope value of ancient Diagenesis fluids of precipitation quartz cement is obtained between+0 ‰~+4 ‰, according to oxygen
Isotope value judges that the source of ancient Diagenesis fluids is fluid in the basin of diagenesis transformation, unrelated with atmospheric water.
Embodiment 2：It is sandstone at 3676.0m with Eastern China Nanpu Sag of Bohai Bay Basin Gaoliu area 62 well depth high
As a example by reservoir, it is further detailed with reference to accompanying drawing.
A kind of method for determining sandstone reservoir middle ancient times Diagenesis fluids source, referring to Fig. 1, contains following steps：
Step one：It is rock core at 3676.0m to take Gaoliu area 62 well depth high, and it is 100um twin polishings to grind thickness
Petrographic thin section five.
Step 2：The quartz secondary of petrographic thin section is found and differentiated using ordinary optical microscope and cathodoluminescence microscope
Side, specifies the development period and feature on quartz secondary side, and the salt solution in quartz secondary side is found and differentiated using fluorescence microscope
Inclusion enclave and hydrocarbon inclusion.Gaoliu area Quartz Crystals In Sandstone Reservoirs are given referring to Fig. 7, in Fig. 7 and increases side and quartz secondary
Saline inclusion feature in side.
Step 3：Using light microscope and cold and hot of the microscope supporting with it is to the salt in the quartz secondary side selected
Water inclusion enclave homogenization temperature detected, obtains the temperature of ancient Diagenesis fluids during quartz precipitation.Saline inclusion homogenization temperature is examined
Result is surveyed referring to Fig. 8, as shown in Figure 8, sandstone reservoir 62 well depth high in Gaoliu area is salt solution in quartz secondary side at 3676.0m
Inclusion enclave homogenization temperature is mostly in 95~115 DEG C.
Step 4：The region containing quartz secondary side in petrographic thin section is drilled through using micro-, 2 disks of diameter 3mm are obtained
Sample, 2 wafer samples and standard quartz sample are embedded into the transparent resin adhesive post of diameter 2.5cm jointly, make plastic
Glue post sample surfaces are processed by shot blasting by post sample.Described standard quartz sample is quartz particles.
Step 5：The glue post sample after polishing is seen using ordinary optical microscope and cathodoluminescence microscope
Photograph and picture mosaic are examined, it is preliminary to choose on quartz secondary side according to mineral list polarisation, orthogonal optical, reflected light and cathodoluminescence feature
For the position of situ oxygen isotope detection.
Step 6：The quartz secondary border area to be analyzed is selected using Camera IMS-1280 secondary ions microprobe mass spectrometer
Domain, is the selected quartz secondary border area domain of the ion beam bombardment of 15um using beam spot diameter, carries out quartz particles and quartz secondary
The test of side original position oxygen isotope, obtains quartz secondary side oxygen isotope information.Quartz particles and quartz secondary side in-situ micro area
The feature of oxygen isotope test point indicates analysis site position referring to Fig. 9, the arrow in Fig. 9.Oxygen isotope test result is referring to figure
10, as shown in Figure 10, sandstone reservoir 62 well depth high in Gaoliu area is oxygen isotope scope master in quartz secondary side at 3676.0m
Will be between 16 ‰~20 ‰.
Step 7：By quartz secondary in saline inclusion homogenization temperature and situ oxygen Isotope Information phase during quartz secondary
Knot and, project under condition of different temperatures quartz mineral oxygen isotope-fluid Oxygen Isotope Fractionation between Quartz in quartzy precipitation process
On figure, referring to Figure 11, the oxygen isotope value of ancient Diagenesis fluids of precipitation quartz cement is obtained between -6 ‰~-3 ‰, according to oxygen
Isotope value judges the Diagenesis fluids that the source of ancient Diagenesis fluids is strong transformation after being penetrated into through metrical water, the pouring of metrical water
Consider has material impact to the growth of feldspar solution and quartz secondary side.
Embodiment provided above is only of the invention with illustrating for convenience, not limiting the scope of the invention,
Technical scheme category of the present invention, person of ordinary skill in the field makees various simple deformations and modification, all should include
In above claim.
Claims (4)
1. it is a kind of to determine the method that sandstone reservoir middle ancient times Diagenesis fluids are originated, it is characterised in that to contain following steps：
Take sandstone reservoir cores and grind the petrographic thin section that thickness is 100um twin polishings；
The quartz secondary side of petrographic thin section is found and differentiated using ordinary optical microscope and cathodoluminescence microscope,
The saline inclusion and hydrocarbon inclusion in quartz secondary side are found and differentiated using fluorescence microscope；
Using light microscope and cold and hot of the microscope supporting with it is equal to the saline inclusion in the quartz secondary side selected
One temperature detected, obtains the temperature of ancient Diagenesis fluids during quartz precipitation；
The region containing quartz secondary side in petrographic thin section is drilled through using micro-, multiple test samples are obtained, by test sample and mark
Quasi- quartz specimen is embedded into transparent resin adhesive post jointly, makes plastic post sample, and glue post sample surfaces are processed by shot blasting；
The glue post sample after polishing is carried out to observe photograph and spelling using ordinary optical microscope and cathodoluminescence microscope
Figure, the preliminary position chosen on quartz secondary side for the detection of in-situ micro area oxygen isotope；
The quartz secondary border area domain to be analyzed is selected using secondary ion microprobe mass spectrometer, the quartz selected using ion beam bombardment
Border area domain is increased, the test of standard quartz sample and quartz secondary side in-situ micro area oxygen isotope is carried out, quartz secondary side is obtained
Oxygen isotope information；
Situ oxygen Isotope Information is mutually tied and projected to when by quartz secondary, saline inclusion homogenization temperature is with quartz secondary in
Sunk on quartz mineral oxygen isotope-fluid Oxygen Isotope Fractionation between Quartz figure in quartzy precipitation process under condition of different temperatures
The oxygen isotope value of the ancient Diagenesis fluids of shallow lake quartz cement, the source of ancient Diagenesis fluids is judged according to oxygen isotope value.
It is 2. according to claim 1 to determine the method that sandstone reservoir middle ancient times Diagenesis fluids are originated, it is characterised in that：The survey
Test agent is the wafer sample of diameter 3mm, a diameter of 2.5cm of the transparent resin adhesive post.
3. it is according to claim 1 and 2 to determine the method that sandstone reservoir middle ancient times Diagenesis fluids are originated, it is characterised in that root
It is preliminary to choose on quartz secondary side for oxygen isotope in situ according to mineral list polarisation, orthogonal optical, reflected light and cathodoluminescence feature
The position of detection.
4. it is according to claim 3 determine the sandstone reservoir middle ancient times Diagenesis fluids source method, it is characterised in that it is described from
The beam spot diameter, of beamlet is 15um.
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| CN111487274A (en) * | 2020-04-28 | 2020-08-04 | 中国地质大学（北京） | Quantitative calculation method for siliceous secondary enlarged edge based on cathodoluminescence technology |
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| CN107966443A (en) * | 2017-12-25 | 2018-04-27 | 中国石油大学(华东) | A kind of research method of stratum fossil fluid salinity Evolutionary History |
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| CN109060928A (en) * | 2018-07-18 | 2018-12-21 | 中国石油天然气股份有限公司 | Quantitatively judge the method and apparatus of carbonate rock cement formation and hydrocarbon charge timing |
| CN111487274A (en) * | 2020-04-28 | 2020-08-04 | 中国地质大学（北京） | Quantitative calculation method for siliceous secondary enlarged edge based on cathodoluminescence technology |
| CN113916880A (en) * | 2020-06-23 | 2022-01-11 | 中国石油天然气股份有限公司 | Method for determining evolution history of diagenetic fluid |
| CN113916880B (en) * | 2020-06-23 | 2023-12-26 | 中国石油天然气股份有限公司 | Method for determining diagenetic fluid evolution history |
| CN112683984A (en) * | 2020-12-14 | 2021-04-20 | 中国科学院地质与地球物理研究所 | Comprehensive identification method for deep paleo-karst fluid |
| CN114354604A (en) * | 2022-01-10 | 2022-04-15 | 西南石油大学 | Identification method of ancient deep primary minerals |
| CN114354604B (en) * | 2022-01-10 | 2023-09-08 | 西南石油大学 | Identification method of ancient deep primary minerals |
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