NL2028486B1 - Method for quantitatively analyzing mechanism of coupling ultra-deep gypsum salt rock with dolomite - Google Patents
Method for quantitatively analyzing mechanism of coupling ultra-deep gypsum salt rock with dolomite Download PDFInfo
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- 239000010459 dolomite Substances 0.000 title claims abstract description 115
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 115
- 239000011435 rock Substances 0.000 title claims abstract description 82
- 239000010440 gypsum Substances 0.000 title claims abstract description 67
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 67
- 150000003839 salts Chemical class 0.000 title claims abstract description 62
- 230000008878 coupling Effects 0.000 title claims abstract description 31
- 238000010168 coupling process Methods 0.000 title claims abstract description 31
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 31
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- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 6
- 238000001069 Raman spectroscopy Methods 0.000 claims description 6
- 238000000265 homogenisation Methods 0.000 claims description 6
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
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- 230000005012 migration Effects 0.000 claims description 5
- 238000013508 migration Methods 0.000 claims description 5
- 238000004445 quantitative analysis Methods 0.000 claims description 5
- 238000000100 multiple collector inductively coupled plasma mass spectrometry Methods 0.000 claims description 4
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- 238000002441 X-ray diffraction Methods 0.000 claims description 3
- 238000001344 confocal Raman microscopy Methods 0.000 claims description 3
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- 229910052712 strontium Inorganic materials 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 238000009933 burial Methods 0.000 description 2
- 238000005136 cathodoluminescence Methods 0.000 description 2
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- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- HHSPVTKDOHQBKF-UHFFFAOYSA-J calcium;magnesium;dicarbonate Chemical compound [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O HHSPVTKDOHQBKF-UHFFFAOYSA-J 0.000 description 1
- -1 carbon-oxygen-strontium-calcium-magnesium Chemical compound 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000002307 isotope ratio mass spectrometry Methods 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V20/00—Geomodelling in general
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- 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
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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Abstract
The invention discloses a method for quantitatively analyzing a mechanism of coupling an ultra-deep gypsum salt rock with a dolomite, including: (|) taking a carbonate rock reservoir of Sichuan Basin as an object to acquire geological background data, profile survey data of classic field geological outcrops, drilling and logging data, and seismic data, respectively; (ll) according to the data obtained in the step (|), using sedimentology and petroleum geology theories as well as various geochemical test analysis to determine basic geological features of dolomites, and determining types of the dolomite, and petrology and distribution rules of various dolomites; and (lll) according to the petrology and the distribution rules of various dolomites, analyzing forms and formation mechanisms of various dolomites and a quantitative relationship between the dolomites and the gypsum salt rock, and finally determining a coupling relationship. According to the invention, by judging a source, a seepage direction, a path and the like of a dolomitization fluid, a source of a dolomitization fluid of bed series and a quantitative coupling relationship between dolomitization fluid and gypsum salt rock are defined, which has important guiding significance for oil and gas exploration.
Description
TECHNICAL FIELD The present invention relates to a method for quantitatively analyzing a mechanism of coupling an ultra-deep gypsum salt rock with a dolomite.
BACKGROUND In a carbonate rock formation, high-quality oil and gas reservoirs often undergo dolomitization, and oil and gas are mostly abundant in a dolomite reservoir of a carbonate rock. The growth of the dolomite is found to be associated with an evaporite such as a gypsum salt in a deep-ultra-deep carbonate rock formation of Sichuan Basin, and the gypsum salt exists above or below the dolomite. This phenomenon indicates that there is a certain coupling relationship between the growth of the dolomite and the sedimentation of the gypsum salt. At present, most traditional technical means are used to analyze a gypsum salt rock formation as a sealing condition of the oil and gas reservoirs, and meanwhile, a TSR reaction in which the gypsum salt rock formation itself participates may generate hydrogen sulfide, thus improving a reservoir quality of the reservoirs. However, this close relationship between the gypsum salt rock and the dolomite reservoir has not been deeply studied by existing technical means, and it is difficult to perform accurate and quantitative analysis due to a strong heterogeneity of the gypsum salt rock and the dolomite.
SUMMARY Aiming at the above defects in the prior art, the present invention provides a method for quantitatively analyzing a mechanism of coupling an ultra-deep gypsum salt rock with a dolomite. In order to achieve the above objective, the technical solutions used in the present invention are as follows. The method for quantitatively analyzing the mechanism of coupling the ultra-deep gypsum salt rock with the dolomite includes the following steps of: (I) taking a carbonate rock reservoir of Sichuan Basin as an object to respectively acquire geological background data, classic profile survey data of field geological outcrops, drilling and logging data, and seismic data; {Il} according to the data obtained in the step (I), using sedimentology and petroleum geology theories as well as various geochemical test analysis to determine basic geological features of dolomites, and determining types of the dolomite, and petrology and distribution rules of various dolomites; and (III) according to the petrology and the distribution rules of various dolomites, analyzing forms and formation mechanisms of various dolomites and a quantitative relationship between the dolomites and the gypsum salt rock, and finally determining a coupling relationship.
Specifically, in the step (I), a method for the profile survey of classic field geological outcrops is: in a section with simple structure, continuous outcrop distribution, completion and clearness , rich in fossils, and little horizontal coverage, selecting a field profile of a gypsum salt rock-dolomite formation system with breakthroughs in oil and gas exploration for fine survey.
Specifically, in the step (Il), contents of the geochemical test analysis include: (1) using a polarizing microscope to observe microscopic fabrics of the dolomite and the gypsum salt rock and identify a mineral composition; (2) using X-ray diffraction to identify a structural characteristic of the dolomite, an order degree of the dolomite, and changes of Fe and Mn contents in different parts of a crystal; (3) using cathode luminescence to reflect classifications of the dolomite and the gypsum salt rock and a change of a microenvironment of a diagenetic fluid; (4) using an electron probe to analyze minerals of the dolomite and the gypsum salt rock to acquire a micro-area morphology image and quantitative analysis of constituent elements; (5) using a high-resolution scanning electron microscope to observe ultra-microscopic morphologies and structures of the minerals of the dolomite and the gypsum salt rock; (6) performing a geochemical research; and (7) studying an inclusion.
Specifically, contents of the geochemical research include: (1) performing macro and micro element analysis on the minerals of the dolomite and the gypsum salt rock, and studying a diagenesis change, paleoenvironment restoration, law of element migration, distinguishing a hydrothermal origin and hydrothermal physical and chemical conditions, and property; (2) using a stable isotope to analyze a paleoenvironment of the dolomite and trace a carbon source to judge a property and a source of the fluid; and (3) performing Mg isotope analysis on the dolomite to study a paleoenvironment and trace a magnesium ion source.
Further, the paleoenvironment of the dolomite is analyzed and the carbon source is traced through C and O isotopes, and the property and the source of the fluid are judged.
Further, a MC-ICP-MS solution method is used to analyze a Mg isotope, study the paleoenvironment, and trace a hydrothermal source and a magnesium ion source.
Specifically, the studying the inclusion specifically refers to: determining a homogenization temperature, a freezing point temperature and a salinity of the inclusion in the dolomite to clarify a property and a temperature of a dolomitization fluid, and using Raman spectroscopy to determine gas and liquid phase components of a fluid inclusion in the dolomite, and finally analyzing a material composition and a material source of the dolomitization fluid comprehensively.
Further, the homogenization temperature and the salinity of the fluid inclusion of the dolomite are measured by a cold and hot stage system.
Further, laser Raman analysis of the fluid inclusion is performed by using a cold and hot stage system in combination with a laser confocal micro Raman spectrometer to determine liquid and gas phase components of the fluid inclusion in the dolomite.
Compared with the prior art, the present disclosure has the following beneficial effects. (1) According to the present invention, on the basis of comprehensively analyzing and sorting out the geological background data, the profile survey data of classic field geological outcrops, the drilling and logging data, and the seismic data, the sedimentology and petroleum geology theories as well as the various geochemical test analysis (including: using a dolomitization fluid tracing technology including carbon and oxygen isotopes to analyze the paleoenvironment of the dolomite and judge the property and the source of the fluid; using a micro element and a rare earth element to analyze the diagenesis change, the palaeosedimentary environment, the law of element migration, the hydrothermal physical and chemical conditions, and the like of the dolomite; using the fluid inclusion to determine the homogenization temperature and the salinity of the dolomite fluid; using the Raman spectroscopy to determine the gas and liquid phase components of the fluid inclusion in the dolomite; and using the magnesium isotope to trace the magnesium ion source forming the dolomite to determine the source and the migration path of the dolomite fluid) are used, and after the types of the dolomite, and the petrology and the distribution rules of various dolomites are determined, the coupling relationship between the gypsum salt rock and the dolomite may be quantitatively analyzed finally.
The solution designed by the present invention has the characteristics of accurate analysis, complete analysis, and strong reliability, and well improves a distinguishing efficiency of a formation relationship between the gypsum salt rock and the dolomite. (2) According to the present invention, design is reasonable, logic is rigorous, and all links are interlocked and complementary, and meanwhile, based on this idea, the present invention deeply integrates applications of various instruments and devices, fully ensures an accuracy of various data, further improves an effectiveness and a reliability of overall analysis, and provides a good guarantee for accurate and quantitative analysis of the mechanism of coupling the ultra-deep gypsum salt rock with the dolomite.
DETAILED DESCRIPTION The present invention provides a method for quantitatively analyzing a mechanism of coupling an ultra-deep gypsum salt rock with a dolomite, which takes a carbonate rock reservoir of Sichuan Basin as an object to quantitatively analyze the mechanism of coupling the ultra-deep gypsum salt rock with the dolomite. The reason is that growth of the dolomite is found to be associated with an evaporite such as a gypsum salt in a deep-ultra-deep carbonate formation of Sichuan Basin, and the gypsum salt exists above or below the dolomite. This phenomenon indicates that there is a certain coupling relationship between the growth of the dolomite and sedimentation of the gypsum salt. A property of a diagenetic fluid of the dolomite in gypsum salt bed series is analyzed deeply, and a time-space coupling relationship between a sedimentation fluid of the gypsum salt and the diagenetic fluid of the dolomite is determined, thus laying a foundation for studying a dolomitization mechanism. Research and analysis ideas of the present invention are as follows. © Analysis of diagenetic fluid of dolomite in gypsum salt-bearing bed series Diagenesis of the dolomite is not only affected by a property of a sediment (or a rock) itself, a mineral composition, a structure, and other factors, but also controlled by a temperature, a pressure, a composition and a property of a pore fluid, and other factors under certain geological conditions. According to the geological phenomenon of widespread growth of the dolomite in gypsum-bearing bed series of the basin, big data statistics is performed on vertical and horizontal distribution of drilled or field outcrop gypsum salt rock and dolomite in multiple bed series of the basin, distribution of sedimentary facies in the gypsum-bearing bed series of the basin is implemented, and a time-space relationship of a fluid concentration of a sedimentary basin. A material composition, a structure, an order degree, a macro element, a micro element, and carbon-oxygen-strontium-calcium-magnesium isotopes of the dolomite in the gypsum-bearing bed series of the sedimentary basin are analyzed, so that properties of the dolomite fluid under different time and space conditions are analyzed comprehensively. @ Discussion on mechanism of coupling sedimentation of gypsum salt with diagenesis of dolomite (A) Analysis of influence of fluid of basin on fabric of dolomite under different time and space conditions Cements formed during diagenesis of a carbonate sediment are mainly calcite, magnesite calcite, and aragonite. Some researchers believe that formation of different minerals is closely related to a Mg/Ca ratio in the fluid, wherein a Mg/Ca ratio of 5 atmospheric water is 0.3 and a Mg/Ca ratio of seawater is 5.2. When the seawater is evaporated, a concentration of a solution may be changed, and when the concentration reaches a gypsum sedimentation concentration, Ca is decreased in the solution. When the concentration reaches a rock salt sedimentation saturation, Na and Cl are gradually decreased. With further increase of the concentration, sedimentation of magnesium sulfate and carnallite may decrease Mg, K, and Na. Therefore, when brine evaporated to a rock salt saturation is strongly rich in Mg, the brine promotes the dolomitization.
(B) Analysis of influence of fluid of basin on micro element of dolomite under different time and space conditions 13 There are many micro elements in carbonate sediment and rock, and contents of micro elements Mn, Fe, Sr, and Na(K) are usually not only related to a sedimentary environment, but also related to a diagenesis environment.
(C) Analysis of influence of fluid of basin on carbon, oxygen and strontium isotopes of dolomite under different time and space conditions The research shows that if 5130 doomite < 820 seawater and 83°C doiomite < BIC seawater, a formation condition thereof is formation of a burial condition or new deformation of early diagenesis. If 3 Sr/%Sr gotomte =% SSI seawater, it is near-surface dolomitization. IENd dotomite <EN seawater, it is dolomitization under the burial condition. IfeNd dotomite EN seawater, it is the near-surface dolomitization.
23 According to the above analysis, characteristics of a fabric, a macro element, a micro element, and stable isotopes of carbon, oxygen and strontium of the dolomite in the gypsum-bearing bed series are established under a gypsum salt sedimentation background of different time and space conditions, so that the property of the diagenetic fluid is implemented, and the mechanism of coupling the sedimentation of the gypsum salt with the diagenesis of the dolomite is discussed.
® Mg source of dolomite in different bed series of Sichuan Basin and evolution path of dolomitization fluid Due to the lack of direct sedimentological/geochemical evidence, the research on a Mg source of an ancient dolomite and an evolution path of a dolomitization fluid has always been controversial. Therefore, according to the present invention, a typical field profile of a corresponding horizon is finely dissected, in combination with drilling core data, longitudinal and transverse comparative analysis is performed on Mg isotope composition of the dolomite, and in combination with numerical simulation of the Mg isotope, tracing a source of Mg in dolomite of different bed series, an evolution path of dolomitization fluid, a control of sedimentary facies and sea level change on dolomitization process.
3 @ A marine dolomite of Sichuan Basin contains different types of dolomites formed in different sedimentary environments. A formation mechanism of the dolomite formed from different sedimentary facies may be quantitatively analyzed through systematic study of a Mg isotope system of the dolomite of different sedimentary facies, the dolomitization process is identified, a control effect of the sedimentary facies on types of the dolomitization is discussed, a coupling relationship between the dolomitization process and the sedimentary facies is established, and the control of the change of the sea level over the dolomitization process is further determined.
® Formation mechanism of dolomite of different bed series Based on the first two research contents, the formation mechanism of different bed series and different types of dolomites is studied: firstly, a dolomitization mode is judged according to the Mg source and the evolution path of the dolomitization fluid (there may be many dolomitization modes in the same bed series); and then, according to the research on the relationship between the sedimentary facies and the change of the sea level as well as the dolomitization process, an overlapping relationship between different types of dolomitization processes in different time and space scales is established, and a specific dolomitization mechanism of the dolomite in different bed series is clarified.
In summary, the present invention is further explained hereinafter.
Main flows of the present invention are as follows.
(I) A carbonate rock reservoir of Sichuan Basin is taken as an object to acquire geological background data, profile survey data of classic field geological outcrops, drilling and logging data, and seismic data, respectively.
(II} According to the data obtained in the step (1}, sedimentology and petroleum geology theories as well as various geochemical test analysis are used to determine basic geological features of dolomites, and types of the dolomite, and petrology and distribution rules of various dolomites are determined.
(III) According to the petrology and the distribution rules of various dolomites, forms and formation mechanisms of various dolomites and a quantitative relationship between the dolomites and the gypsum salt rock are analyzed, and a coupling relationship is finally determined.
In the step (I), a method for the profile survey of classic field geological outcrops is: in a section with simple structure, continuous outcrop distribution, completion and clearness, rich in fossils, and little horizontal coverage, selecting a field profile of a gypsum salt rock-dolomite formation system with breakthroughs in oil and gas exploration for fine survey.
In the step (II), contents of the geochemical test analysis include: (1) using a polarizing microscope to observe microscopic fabrics of the dolomite and the gypsum salt rock and identify a mineral composition (in the embodiment, a DM4500P polarization microscope produced by Leica Company in Germany is used for identification); (2) using X-ray diffraction to identify a structural characteristic of the dolomite, an order degree of the dolomite, and changes of Fe and Mn contents in different parts of a crystal (in the embodiment, a Rigaku D/Max IIIC X-ray diffractometer made in Japan is used for identification); (3) using cathode luminescence to reflect classifications of the dolomite and the gypsum salt rock and a change of a microenvironment of a diagenetic fluid (in the embodiment, a CL8200 Mk5-2 cathodoluminescence microscope system produced by CITL Company in U.K.
is used for cathodoluminescence imaging analysis of the dolomite); (4) using an electron probe to analyze minerals of the dolomite and the gypsum salt rock to acquire a micro-area morphology image and quantitative analysis of constituent elements (in the embodiment, a Japanese EPMA-17200H Series electron probe microanalyzer is used, with an element analysis range of °B to *2U and an analysis accuracy that a major element may reach 1%); (5) using a high-resolution scanning electron microscope to observe ultra-microscopic morphologies and structures of the minerals of the dolomite and the gypsum salt rock (in the embodiment, a Quanta250 FEG field emission scanning electron microscope of FEI Company in America is used, with a highest resolution of 1.2 nm, a maximum magnification of 1 million times, and instant imaging); (6) performing a geochemical research; and (7) studying an inclusion.
Contents of the geochemical research include: (1) performing macro and micro element analysis on the minerals of the dolomite and the gypsum salt rock, and studying a diagenesis change, paleoenvironment restoration, law of element migration, distinguishing hydrothermal origin and hydrothermal physical and chemical conditions, and property (in the embodiment, a PerkinElmer Elan DRC-e inductively coupled plasma mass spectrometer is used to perform the macro and micro element analysis on the minerals of the dolomite and the gypsum salt rock); (2) using a stable isotope to analyze a paleoenvironment of the dolomite and trace a carbon source to judge a property and a source of the fluid (in the embodiment, a Finnigan MAT 253 IRMS gas isotope mass spectrometer is used, which is connected with a GasBench II, a TC/EA elemental analyzer, and a Conflo IV device of a GC gas chromatograph to determine and analyze the C and O isotopes); (3) performing Mg isotope analysis on the dolomite to study a paleoenvironment and trace a magnesium ion source (in the embodiment, the MC-ICP-MS solution method is used to analyze the Mg isotope, and a Neptune MC-ICP-MS is used as the instrument, which has characteristics of a high resolution, a high precision, and a high accuracy, and has a matching ultra-purification space of over 250 m3).
The studying the inclusion specifically refers to: determining a homogenization temperature, a freezing point temperature and a salinity of the inclusion in the dolomite (in the embodiment, a THMSG-600 cold and hot stage system of Linkam Company in U.K. is used to study a phase change of the fluid inclusion in the minerals in a range of -190°C to 600°C) to clarify a property and a temperature of a dolomitization fluid, and using Raman spectroscopy to determine gas and liquid phase components of a fluid inclusion in the dolomite (in the embodiment, a THMSG-600 cold and hot stage system of Linkam Company in U.K. is combined with a British Renishaw inVia series new laser confocal micro Raman spectrometer to determine the gas and liquid phase components of the fluid inclusion in the dolomite), and finally analyzing a material composition and a material source of the dolomitization fluid comprehensively.
According to the present invention, by judging a source, a seepage direction, a path and the like of a dolomitization fluid, a source of a dolomitization fluid of bed series and a quantitative coupling relationship between dolomitization fluid and gypsum salt rock are defined, which has important guiding significance for oil and gas exploration.. Therefore, compared with the existing technical means, the present invention has prominent substantive features and an outstanding progress.
The above embodiment is only one of the preferred implementations of the present invention, and should not be used to limit the scope of protection of the present invention. However, the technical problems solved by any meaningless changes or embellishments made based on the main design idea and spirit of the present invention are still consistent with those of the present invention and should all be included in the scope of protection of the present invention.
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| CN112577875A (en) * | 2020-12-02 | 2021-03-30 | 成都理工大学 | Efficient detection technology for multiple native pores of carbonate rock |
| CN112878998B (en) * | 2021-01-28 | 2022-07-05 | 成都理工大学 | Method for predicting halogen storage layer and evaluating resource amount of underground brine type potassium ore and lithium ore |
| CN115452818B (en) * | 2021-06-09 | 2024-07-23 | 中国石油化工股份有限公司 | Microcosmic identification method for identifying dolomite causes |
| CN114354663B (en) * | 2021-12-07 | 2023-01-03 | 自然资源部第一海洋研究所 | Discriminant analysis method of iron dolomite-iron dolomite |
| CN114441581B (en) * | 2021-12-07 | 2022-11-08 | 青岛海洋地质研究所 | Discrimination analysis method for multi-stage cause dense dolomite |
| CN115327614B (en) * | 2022-08-05 | 2023-05-30 | 西南石油大学 | Method for quantitatively analyzing reservoir effect of symbiotic system of ultra-deep evaporite and dolomite |
| CN115453085B (en) * | 2022-08-05 | 2024-03-08 | 西南石油大学 | Method for quantitatively analyzing coupling mechanism between ultra-deep evaporite and microbial dolomite |
| CN117035197B (en) * | 2023-08-25 | 2024-06-04 | 成都理工大学 | Intelligent lost circulation prediction method with minimized cost |
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| CN104808259A (en) * | 2015-04-01 | 2015-07-29 | 中国石油天然气股份有限公司 | Detection method and device for gypsum rock distribution |
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