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50 results about "Hydrogen index" patented technology
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Shale organic porosity detection method
InactiveCN103454198ARealize computingLow costPermeability/surface area analysisPorosityHydrogen index
The invention discloses a shale organic porosity detection method, and belongs to the technical field of petroleum, geology and mining exploration and development. The shale organic porosity detection method comprises the steps of calculating chemical kinetic parameters of petroleum formation from kerogen, gas formation from kerogen and gas formation from crude oil pyrolysis by utilizing a chemical kinetic method based on the thermal simulation experiment of a shale sample and a crude oil sample with representativeness, and determining the conversion rate of the petroleum formation from kerogen, gas formation from kerogen and gas formation from crude oil pyrolysis of shale at the study layer section by combining with the burial history and thermal history of a target layer; recovering the original hydrogen index and the original organic carbon of shale of the target layer by utilizing residual hydrogen index and data of residual organic carbon of shale of the target layer and combining with the conversion rate of the petroleum formation from kerogen, gas formation from kerogen and gas formation from crude oil pyrolysis; analyzing the organic pore compressibility of shale by utilizing a Ar ion polishing thin sheet of a shale sample of the target layer; calculating the organic porosity of the shale sample of the target layer section. The shale organic porosity detection method has the effects that the organic porosity of the reservoir of shale can be calculated, and the shale organic porosity detection method is high in calculation accuracy, and is easy to operate.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Time-lapsed diffusivity logging for monitoring enhanced oil recovery
InactiveUS7741841B2Electric/magnetic detection for well-loggingDetection using electron/nuclear magnetic resonanceHydrogen indexNon magnetic
The use of time-lapsed NMR diffusivity measurements in an observation well is disclosed. The observation well is cased in the zone of interest with non-magnetic and non-conductive casing that is invisible to the NMR tool. Second, because NMR measurements have a dead zone in front of the antenna depending on the spatial variation of the fixed magnet strength, for example about 2.7 inches, a distance between the casing and the formation is reduced to less than the dead zone length by drilling the observation well at small deviation of about 5° and running the casing without centralizers. Both the casing and the pad-type NMR tool will follow the low side of the borehole, ensuring the measurement volume of the NMR tool is inside the formation and beyond the annulus. With the appropriate observation well completion, time-lapse diffusivity measurements with pad-type NMR tools can address several shortcomings in the current practice of monitoring EOR processes that rely upon changes in density and hydrogen index (HI). Various uses of NMR imaging in wells cased with non-metallic casing are also disclosed.
Owner:SCHLUMBERGER TECH CORP
Method and Apparatus for Evaluation of Hydrocarbon-Bearing Reservoirs
ActiveUS20160186556A1SurveyComputation using non-denominational number representationData processing systemHydrogen index
A method and system for evaluation of a hydrocarbon-bearing shale formation employs a data processing system that defines a response model that relates first data representing measured petrophysical properties of the shale formation at a given location to second data representing volume fractions for a particular set of formation components at the given location. The first data includes hydrogen index at the given location, and the particular set of formation components of the second data include a number of mineral components and a number of hydrocarbon-bearing components. The hydrocarbon-bearing components include at least one kerogen component. A computation solver processes the response model along with the first data to solve for the second data. The solved second data representing the volume fraction of the at least one kerogen component is processed to derive at least one ratio that is indicative of kerogen maturity at the given location.
Owner:SCHLUMBERGER TECH CORP
Time-Lapsed Diffusivity Logging for Monitoring enhanced Oil Recovery
InactiveUS20090167302A1Electric/magnetic detection for well-loggingDetection using electron/nuclear magnetic resonanceHydrogen indexNon magnetic
The use of time-lapsed NMR diffusivity measurements in an observation well is disclosed. The observation well is cased in the zone of interest with non-magnetic and non-conductive casing that is invisible to the NMR tool. Second, because NMR measurements have a dead zone in front of the antenna depending on the spatial variation of the fixed magnet strength, for example about 2.7 inches, a distance between the casing and the formation is reduced to less than the dead zone length by drilling the observation well at small deviation of about 5° and running the casing without centralizers. Both the casing and the pad-type NMR tool will follow the low side of the borehole, ensuring the measurement volume of the NMR tool is inside the formation and beyond the annulus. With the appropriate observation well completion, time-lapse diffusivity measurements with pad-type NMR tools can address several shortcomings in the current practice of monitoring EOR processes that rely upon changes in density and hydrogen index (HI). Various uses of NMR imaging in wells cased with non-metallic casing are also disclosed.
Owner:SCHLUMBERGER TECH CORP
Production of aromatics from methanol and co-feeds
ActiveUS9732013B2Increase aromatics yieldReduce and minimize cokingMolecular sieve catalystCatalystsHydrogenOxygenate
Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.
Owner:EXXONMOBIL CHEM PAT INC
Correction for low porosity effects on neutron gamma density
InactiveCN102330552AAccurate measurementAccurate Neutron Gamma DensityBorehole/well accessoriesNuclear radiation detectionPorosityHydrogen index
Systems, methods, and devices are provided to determine an accurate neutron-gamma density (NGD) measurement for a broad range of formations, including low-hydrogen-index or low-porosity formations and formations with heavy elements. For example, such an NGD measurement may be obtained by emitting neutrons into a formation such that some of the neutrons inelastically scatter off elements of the formation and generate inelastic gamma rays. The neutrons and inelastic gamma rays that return to the downhole tool may be detected. Some characteristics of certain formations are believed to affect the fast neutron transport of the formations. Thus, if a formation has one or more of such characteristics, a correction may be applied to the count rate of neutrons, the count rate of inelastic gamma rays, or the neutron transport correction function, upon which the neutron-gamma density (NGD) may be determined.
Owner:PRAD RES & DEV LTD
Production of Aromatics from Methanol and Co-Feeds
ActiveUS20160090332A1Increase aromatics yieldReduce and minimize cokingMolecular sieve catalystCatalystsHydrogenHydrogen index
Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.
Owner:EXXONMOBIL CHEM PAT INC
Method, device and system for determining dessert area developed through in-situ transformation of shale oil
The embodiment of the invention discloses a method, device and system for determining a dessert area developed through in-situ transformation of shale oil. The method comprises the steps that an output oil and gas potential index is determined according to the organic carbon content, the hydrogen index and the shale density; a heating shale section is determined according to the output oil and gaspotential index and a corresponding oil and gas potential index lower limit value, and the oil and gas potential index lower limit value is determined according to a well spacing mode and the shale vitrinite reflectivity; the output quantity is determined according to the thickness and the area of the shale section and output oil and gas potential index data; the rate of return on investment is determined according to the output quantity and the investment cost; and the dessert area developed through in-situ transformation of the shale oil is determined by utilizing the rate of return on investment. By utilizing the method, device and system for determining the dessert area developed through in-situ transformation of the shale oil, the accuracy of determining of the dessert area can be improved.
Owner:PETROCHINA CO LTD
Gas Detection And Quantification Method Using A Pulsed Neutron Logging Tool
ActiveUS20140001350A1Improve formation hydrogen index （HI） measurementEasy to measureNuclear radiation detectionHydrogen indexQuantification methods
A method of formation evaluation using a pulsed neutron tool. The approach removes the effect of formation hydrogen index (HI) from the nuclear response of the tool. It can be used for gas detection and quantification, as well as for other fluids. It can also be used to improve a formation hydrogen index (HI) measurement.
Owner:SCHLUMBERGER TECH CORP
Method for exploitation of a sedimentary basin by means of maps of total organic carbon and hydrogen index
ActiveUS20170167230A1More dataMany timesFluid removalDesign optimisation/simulationHydrogenHydrogen index
The present invention relates to a method for exploitation of a sedimentary basin. Exploitation of the sedimentary basin is permitted by the choice of zones of interest within the basin, the zones being determined by means of maps of total organic carbon TOC and of hydrogen index HI of at least one sedimentary layer. According to the invention, the maps of total organic carbon TOC and of hydrogen index HI are obtained taking into account the current values of TOCA(W) and HIA(W) at the level of the well and taking into account the maps of bathymetry BM and of sedimentation rate SM.
Owner:INST FR DU PETROLE
Method for constructing kerogen average molecular structure model
InactiveCN108827995AQuickly get average structural parametersRetain structural informationMaterial analysis using wave/particle radiationChemical structureCarbon number
The invention provides a method for constructing a kerogen average molecular structure model. The method comprises the steps of: calculating a hydrogen index HI of each sample and a kerogen average molecular structure parameter of regional shale; extracting the kerogen sample in a shale powder sample for XPS energy spectrum analysis and FTIR spectral analysis, determining the elemental compositionin the kerogen sample, the atomic ratio of carbon atoms to heteroatoms and the existence form of heteroatoms; fitting a peak area according to the characteristic peaks of each group in a FTIR spectrum, and calculating the chemical structure parameters of kerogen; determining the total carbon number of the kerogen average molecular structure, and constructing the initial kerogen average molecularstructure; maintaining the main carbon skeleton structure and the heteroatoms functional group unchanged, continuously adjusting the carbon number of each aliphatic chain and the position of the heteroatoms functional group in the initial kerogen average molecular structure, until the adjusted model structure parameters are consistent with the XPS and FTIR experimental results, obtaining the kerogen average molecular structure model of the regional shale.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Tight sandstone anhydrous gas reservoir gas-bearing property evaluation method
ActiveCN111812736AEfficient identificationScientific and reasonable designPermeability/surface area analysisMaterial analysis using neutronsWell loggingHydrogen content
The invention discloses a tight sandstone anhydrous gas reservoir gas-bearing capacity evaluation method, and solves the technical problem of low tight sandstone anhydrous gas reservoir gas-bearing capacity evaluation precision in the prior art. The method mainly comprises the following steps: sequentially calculating a shale content curve Vsh, an effective porosity curve phi e, a pure rock neutron curve CNL1, an apparent sandstone skeleton hydrogen content index curve CNL2 and a gas content evaluation index parameter GASFG curve, and finally carrying out gas content evaluation according to the gas content evaluation index parameter GASFG curve. According to the method, the excavation effect of the natural gas on the neutron logging curve is fully utilized to quantitatively characterize the gas-bearing index parameters, and the technical problem in the prior art that the tight sandstone anhydrous gas reservoir is difficult to accurately evaluate the gas-bearing property of the reservoir under the condition that stratum water and other data are lacked is effectively solved through classification evaluation. Practice proves that the technology not only can accurately evaluate the gasbearing capacity of the tight sandstone anhydrous gas reservoir, but also can effectively identify the high gamma reservoir, so that an accurate exploration method is provided for oil and gas exploration.
Owner:SOUTHWEST PETROLEUM UNIV
Hydrocarbon expulsion efficiency calculation method and system for hydrocarbon source rock based on pyrolysis parameter diagram format
ActiveCN112016032AReasonable accessSimple calculationComplex mathematical operationsThermodynamicsHydrogen index
The invention provides a hydrocarbon source rock hydrocarbon expulsion efficiency calculation method and system based on a pyrolysis parameter diagram format. The method comprises the steps: firstly carrying out the pyrolysis and organic carbon analysis of a rock sample, and obtaining a current hydrogen index HI and a maximum pyrolysis peak temperature Tmax; further interpolating and subdividing an organic matter type boundary and a maturity trend line of the classic pyrolysis plate to obtain a subdivided pyrolysis plate; marking a data point consisting of HI and Tmax, and taking an ordinate value corresponding to an intersection point of an organic matter type line passing through the data point and a maturity line of which Ro is 0.2% as an original hydrogen index of the sample; and finally calculating the hydrocarbon expulsion efficiency according to the original hydrogen index. According to the method, the hydrocarbon expulsion efficiency of the hydrocarbon source rock can be simplyand accurately calculated; the original hydrogen index collection is relatively reasonable, and the calculation process is simple. Compared with a manual assignment method, the method has the advantages that the phenomena of negative values and hydrocarbon expulsion efficiency greater than 100% do not occur in the calculation process and result.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Excavation effect quantitative characterization and gas-bearing property evaluation method for compact sandstone low-resistance reservoir
ActiveCN112083515ASolve the accuracy problemAddress reliabilityGeological measurementsWell loggingHydrogen index
The invention discloses an excavation effect quantitative characterization and gas-bearing evaluation method for a compact sandstone low-resistance reservoir, belongs to the technical field of geophysical well logging evaluation, breaks through the difficulty that the excavation effect can only be qualitatively described for a long time, and solves the problems that in the prior art, the gas-bearing property evaluation effect of the compact sandstone low-resistance reservoir is not ideal, and the evaluation precision is difficult to meet the production requirements. The excavation effect quantitative characterization method for the compact sandstone low-resistance reservoir mainly comprises the steps that: the total hydrogen index Hgt of gaseous hydrocarbon is calculated according to gas logging data, and the shale content Vsh, the effective porosity phi e, the water saturation Sw and the total hydrogen index HNH in a stratum are calculated according to logging data; then an excavationeffect index Hex in the stratum is calculated by utilizing the parameters Hgt, Vsh, phi e, Sw and HNH; and then the gas-bearing property of the compact sandstone low-resistance reservoir is evaluatedaccording to Hex. According to the method, qualitative description to quantitative characterization of the excavation effect phenomenon is achieved, the precision and reliability problems of evaluation of the gas-bearing property of the compact sandstone low-resistance reservoir are solved, and a good application effect is achieved in Jinhua-Qiulin block jurassic Shaximiao formation.
Owner:SOUTHWEST PETROLEUM UNIV
Method for measuring hydrogen index of crude oil by nuclear magnetic resonance
ActiveCN108918574AImprove accuracyClear principleAnalysis using nuclear magnetic resonanceInversion recoveryRelative Volume
The invention relates to a method for measuring a hydrogen index of crude oil by nuclear magnetic resonance. The method comprises the following steps of S1, measuring and fitting a pure water sample signal, using a functional equation with a single e index for fitting, and thus acquiring a saturation magnetization vector and a longitudinal relaxation time of a pure water sample; S2, measuring andfitting an crude oil sample signal, using a functional equation with dual e indexes for fitting, and thus acquiring a saturation magnetization vector of a crude oil sample and a longitudinal relaxation time of each component; and S3, building an equation set, and computing a relative volume and the hydrogen index of the crude oil sample. The invention provides the new method for measuring the hydrogen index of the crude oil by nuclear magnetic resonance, which can be applied to online measurement without sampling and without installing a gradient coil system. Specifically, the method providedby the invention adopts a reverse recovery pulse sequence to collect the signal, and is clear in principle, convenient to operate, high in accuracy of measurement result and good in repeatability; andthe method provided by the invention is also applicable to fluid of which an oil-water mixture cannot be significantly layered.
Owner:北京拉莫尔科技发展有限公司
Method for computing relative content of CO2 in formation by using well-log information
InactiveCN105825055AEasy accessHigh precisionInformaticsSpecial data processing applicationsCounting rateWell logging
The invention relates to a method for computing relative content of CO2 in a formation by using well-log information. The method comprises the following steps: (1) converting a gas volume ratio under the conditions of ground and gas reservoirs: converting relative CO2 content obtained through ground test into relative CO2 content under formation condition; (2) determining an average hydrogen index of gas: computing the average hydrogen index of the gas in pores; (3) correcting water-containing influence on well-logging counting rate: eliminating the influence on the well-logging counting rate caused by formation water, and highlighting the difference of response to CO2 and methane caused by the well-logging counting rate; (4) establishing a quantitative computation model for the relative CO2 content: computing the relative content of the CO2 under the formation condition. According to the method, through establishing a well-logging counting rate value, the average hydrogen index of the gas and the computation model for the CO2 content and predicting the relative content of the CO2 in the formation, the accuracy of the model is relatively high, the practicability is relatively high, and the popularization and application value is relatively good.
Owner:SOUTHWEST PETROLEUM UNIV
Method and device for predicting oil-gas quantity produced by in-situ development of shale oil
PendingCN112288118ARealize Quantitative PredictionImprove forecast accuracyForecastingFluid removalThermodynamicsPredictive methods
The invention provides a method and a device for predicting oil-gas quantity produced by in-situ development of shale oil, and the method comprises the following steps: obtaining an original total organic carbon content TOC value, a vitrinite reflectance Ro value and an original hydrogen index HI value of shale to be measured; obtaining the in-situ development output oil gas quantity of the to-be-measured shale according to the original TOC value, the Ro value and the original HI value of the to-be-measured shale, and a pre-established shale oil in-situ development output oil quantity prediction model and a shale oil in-situ development output gas quantity prediction model. The shale oil in-situ development output oil quantity prediction model and the shale oil in-situ development output gas quantity prediction model are pre-established according to output oil gas quantity data obtained by performing thermal simulation experiments on a plurality of different shale samples and originalTOC values, Ro values and original HI values of the shale samples. According to the technical scheme, quantitative prediction of the oil-gas quantity produced by in-situ development of the shale oil is realized, and the prediction precision and efficiency of the oil-gas quantity produced by in-situ development of the shale oil are improved.
Owner:PETROCHINA CO LTD
Production of Aromatics from Methanol and Co-Feeds
ActiveUS20170305810A1Increase aromatics yieldReduce and minimize cokingMolecular sieve catalystCatalystsHydrogenOxygenate
Methods are provided for improving the yield of aromatics during conversion of oxygenate feeds. An oxygenate feed can contain a mixture of oxygenate compounds, including one or more compounds with a hydrogen index of less than 2, so that an effective hydrogen index of the mixture of oxygenates is between about 1.4 and 1.9. Methods are also provided for converting a mixture of oxygenates with an effective hydrogen index greater than about 1 with a pyrolysis oil co-feed. The difficulties in co-processing a pyrolysis oil can be reduced or minimized by staging the introduction of pyrolysis oil into a reaction system. This can allow varying mixtures of pyrolysis oil and methanol, or another oxygenate feed, to be introduced into a reaction system at various feed entry points.
Owner:EXXONMOBIL CHEM PAT INC
Neutron detection using a shielded gamma detector
ActiveUS9304214B2Measurement with scintillation detectorsMaterial analysis by optical meansPorosityHydrogen
A tool having a neutron source, a gamma ray detector, and a photomultiplier tube is provided. The gamma ray detector and the photomultiplier tube are at least partially surrounded by a layer of boron. The tool is used to make measurements, and the number of prompt gamma rays emitted by the boron is determined from the measurements. The number of neutrons detected may be inferred using the determined number of prompt gamma rays. The tool may also have a layer of neutron absorbing material different from boron or a layer of heavy metal at least partially surrounding the boron. The tool may be a logging tool used to delineate a porous formation and to determine its porosity. The tool may have a plurality of gamma ray detector / photomultiplier tube pairs and those pairs may be used to determine a formation hydrogen index and / or a borehole hydrogen index.
Owner:SCHLUMBERGER TECH CORP
Method for quickly identifying favorable interval of shale oil based on rock pyrolysis parameters
ActiveCN112858369AUniversal reference valueMaterial analysis by optical meansMaterial thermal analysisPhysical chemistryHydrogen index
The invention provides a method for quickly identifying a favorable interval of shale oil based on rock pyrolysis parameters. The method comprises the steps of acquiring a shale sample of a shale stratum, and respectively carrying out rock pyrolysis analysis and total organic carbon content measurement; acquiring a first organic geochemical parameter of the shale formation by adopting a rock pyrolysis analysis measurement method; determining the organic matter maturity and the organic matter type of the shale sample according to the highest pyrolysis peak temperature or the highest pyrolysis peak temperature and hydrogen index plate; solving the hydrocarbon expulsion amount; dividing the shale into an E type, an M type and an R type on the basis of the hydrocarbon expulsion amount in the unit mass of the low-maturity-maturity sample; and determining a favorable interval of the shale oil by combining analysis and description of different types of shale. According to the method, a new index for representing the hydrocarbon expulsion amount of the shale is established, the shale oiliness is predicted, and then the favorable interval of shale oil exploration is determined.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Method and apparatus for evaluation of hydrocarbon-bearing reservoirs
ActiveUS10360282B2Geological measurementsComplex mathematical operationsData processing systemHydrogen index
Owner:SCHLUMBERGER TECH CORP
High-over mature decayed mud type marine shale original hydrogen index and organic carbon recovery method
ActiveCN109977360AReflect hydrocarbon generation potentialAccurate and reliable recovery resultsComplex mathematical operationsRecovery methodHydrogen
The invention provides a high-over mature decayed mud type marine shale original hydrogen index and organic carbon recovery method, which belongs to the technical field of oil and gas geochemistry research, and realizes the high-over mature decayed mud type marine shale original hydrogen index and organic carbon content recovery under the condition of considering the influence of the paleo-productivity and land source input. The method comprises the steps of selecting the high-over mature rotten mud type marine shale in a research area as a target shale sample, determining the content of organic carbon, the content of free hydrocarbon and the content of pyrolytic hydrocarbon at present, and calculating the potential of hydrocarbon generation; determining the total phosphorus content and the aluminum content, and calculating the autogenous organic phosphorus content; selecting a shale sample in an immature-low mature stage in the same layer system as a target shale sample as a referenceshale sample; and obtaining the lowest hydrogen index and the highest hydrogen index of the reference shale sample, and recovering the original hydrogen index and the original organic carbon contentby taking the lowest hydrogen index and the highest hydrogen index as references and utilizing the ratio of the content of the autogenous organic phosphorus to the content of the total phosphorus.
Owner:NANJING UNIV
Determination method of cumulative hydrocarbon generation intensity and identification and evaluation method of dessert layer for clastic rock
ActiveCN112832738ARealize evaluationThe recognition effect is accurateSurveyChemical machine learningClay mineralsHydrogen index
The invention provides a determination method of cumulative hydrocarbon generation intensity and an identification and evaluation method of a dessert layer for clastic rock. The determination method of the cumulative hydrocarbon generation intensity comprises the following steps: establishing thermal maturity-hydrogen index templates and thermal maturity-organic carbon loss rate templates of different organic matter types; obtaining pyrolysis parameters of each burial depth point of a target block; determine organic matter type of each burial depth point of the target block based on at least one of the two templates and in combination with the pyrolysis parameters; and determine the cumulative hydrocarbon generation intensity of each burial depth point of the target block based on the organic matter types, the two templates and the pyrolysis parameters. According to the identification and evaluation method of the dessert layer, shale oil dessert layer identification and evaluation are carried out on the basis of the cumulative hydrocarbon generation intensity, threshold oil content of desserts and the maximum oil storage quantity of the rock; and / or non-shale oil dessert layer identification and evaluation are carried out on the basis of the cumulative hydrocarbon generation intensity, the threshold oil content of the desserts, the initial hydrocarbon generation organic carbon content, the clay mineral content, the porosity and the free hydrocarbon content.
Owner:PETROCHINA CO LTD
Method and system used for characterizing hydrocarbon generation and expulsion features of hydrocarbon source rock and capable of compensating light hydrocarbon evaporation capacity
InactiveCN110513106AAccurate representation of hydrocarbon generation and expulsion characteristicsAccurately predict hydrocarbon expulsion intensitySpecial data processing applicationsBorehole/well accessoriesEvaporationHydrogen index
The invention provides a method and system used for characterizing hydrocarbon generation and expulsion features of hydrocarbon source rock and capable of compensating the light hydrocarbon evaporation capacity. The method comprises the steps: through hydrocarbon source rock pyrolysis data and organic matter abundance, a hydrogen index corresponding to a hydrocarbon source rock sample is obtained;an evolution model of the hydrogen index of the hydrocarbon source rock along with the pyrolysis peak temperature data is fitted out, and an initial hydrogen index of the hydrocarbon source rock anda hydrogen index corresponding to the pyrolysis peak temperature are obtained; the hydrocarbon conversion rate corresponding to the pyrolysis peak temperature data is calculated; the pyrolysis peak temperature data are converted into the vitrinite reflectance, and the hydrocarbon conversion rate corresponding to the vitrinite reflectance is obtained; a hydrocarbon source rock hydrocarbon generation and expulsion model is established, and the hydrocarbon expulsion threshold of the hydrocarbon source rock is determined; and according to the geological and geochemical features of the hydrocarbonsource rock, the hydrocarbon generation and expulsion intensity of the hydrocarbon source rock is obtained. The method and the system can accurately represent the hydrocarbon generation and expulsionfeatures of the hydrocarbon source rock, and have certain guiding significance for exploration of oil and gas reservoirs subjected to near-source reservoir forming, especially the compact oil and gasreservoirs.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Plunger rock sample oil saturation nondestructive measurement method and device
PendingCN113125485AAccurate acquisition of oil saturationProtection from damageAnalysis using nuclear magnetic resonanceWater resource assessmentNMR - Nuclear magnetic resonanceHydrogen index
The invention provides a plunger rock sample oil saturation nondestructive measurement method and device. The plunger rock sample oil saturation nondestructive measurement method comprises the steps of sampling and drying rock in a to-be-measured well to obtain a first plunger rock sample, obtaining the hydrogen content index of the crude oil sample corresponding to the first plunger rock sample, performing nuclear magnetic resonance analysis treatment on the first plunger rock sample to obtain a nuclear magnetic resonance T2 attenuation curve of the oil-containing plunger rock sample, performing saturated water treatment on the first plunger rock sample to obtain a saturated plunger rock sample, performing nuclear magnetic resonance analysis treatment on the saturated water plunger rock sample to obtain a nuclear magnetic resonance T2 attenuation curve of the water-containing plunger rock sample, and calculating the oil saturation of the plunger rock sample. According to the plunger rock sample oil saturation nondestructive measurement method and device, the measurement result is irrelevant to the physical property condition of the rock sample, the oil saturation of the rock sample can be accurately obtained, and meanwhile the plunger rock sample can be protected from being damaged to the maximum extent.
Owner:PETROCHINA CO LTD
Shale oil saturation determination method and device, electronic equipment and storage medium
ActiveCN113781452ASolve oilySolve the accuracy problemImage enhancementImage analysisNMR - Nuclear magnetic resonancePhysical chemistry
The invention relates to a shale oil saturation determination method and device, electronic equipment and a storage medium, and relates to the technical field of shale oil saturation. The invention discloses the shale oil saturation determination method comprising the following steps: acquiring first signal intensity corresponding to first two-dimensional nuclear magnetic resonance distribution of shale, fourth signal intensity corresponding to second two-dimensional nuclear magnetic resonance distribution of the shale without water, and setting a hydrogen-containing index of formation water and a hydrogen-containing index of an oil sample; and determining the oil saturation of the shale based on the first signal intensity, the fourth signal intensity, the hydrogen-containing index of the set formation water and the hydrogen-containing index of the set oil sample. According to the embodiment of the invention, the oil saturation of shale can be determined.
Owner:DAQING OILFIELD CO LTD +1
Recovery method of original hydrogen index and organic carbon of high-over-mature sapropelic marine shale
ActiveCN109977360BReflect hydrocarbon generation potentialAccurate and reliable recovery resultsComplex mathematical operationsHydrogen indexOrganic phosphorus
Owner:NANJING UNIV
A Method for Analyzing Hydrogen Supply Ability of Narrow Fraction of Petroleum Cracking Products
ActiveCN109406642BEfficient analysisSimple methodComponent separationCarbon numberMass Spectrometry-Mass Spectrometry
A method for analyzing the hydrogen supply capacity of a narrow fraction of petroleum cracking products, comprising the following steps: S1: analyzing the narrow fractions of petroleum cracking products by chromatography and chromatography-mass spectrometry; S2: performing data post-processing on the analysis results in S1 Wherein, the post-processing of the data comprises the following steps: 1) the chromatographic-mass spectrometry analysis results in S1 are summarized according to the hydrocarbon carbon number and the hydrogen deficiency index Z in the oil product; 2) the hydrocarbons with different carbon numbers corresponding to the deficiency The hydrogen index Z is classified according to the type of hydrocarbon; 3) calculate the proportion of compounds with tetralin structure and decahydronaphthalene structure; 4) compare the proportion of compounds with hydrogen supply capacity in different fractions of the same source, Determine suitable fractions as hydrogen donors. The method is convenient, intuitive, and uses a small amount of samples. Simple calculations on the analytical data can determine the hydrogen supply capacity of the fractions, which is of great significance for the selection of hydrogen supply fractions in the hydrogen supply thermal cracking process.
Owner:PETROCHINA CO LTD
Prediction method and device for physical property parameters of effective hydrocarbon source rock
ActiveCN113946928AOvercome the defect that the cumulative amount of oil and gas discharged cannot be obtainedImprove resource evaluation accuracyDesign optimisation/simulationSpecial data processing applicationsHydrogen indexTotal organic carbon
The invention provides a prediction method and device for physical property parameters of effective hydrocarbon source rock. The method comprises the following steps: acquiring the total organic carbon content, vitrinite reflectivity and hydrogen index of to-be-detected effective hydrocarbon source rocks; establishing an original hydrocarbon generation capability prediction model, and obtaining the original hydrocarbon generation capability of the effective hydrocarbon source rock to be tested by utilizing the original hydrocarbon generation capability prediction model according to the total organic carbon content, the vitrinite reflectivity and the hydrogen index of the effective hydrocarbon source rock to be tested; and establishing an effective hydrocarbon source rock physical property parameter prediction model, and obtaining physical property parameters of the effective hydrocarbon source rock to be measured according to the original hydrocarbon generation capacity of the effective hydrocarbon source rock to be measured and the effective hydrocarbon source rock physical property parameter prediction model, wherein the physical property parameters comprise the oil gas discharge amount and / or the total organic carbon content lower limit value. The method and device provided by the invention can realize quantitative prediction of the oil and gas discharge amount of the effective hydrocarbon source rock and / or quantitative evaluation of the TOC lower limit value of the effective hydrocarbon source rock, and improve the prediction precision and efficiency of oil and gas resources and favorable zones.
Owner:PETROCHINA CO LTD
Metamorphic rock component logging identification method based on relative hydrogen-containing index
ActiveCN113219544AImprove interpretation accuracyImprove exploration effectivenessNuclear radiation detectionWater resource assessmentLithologyWell logging
The invention discloses a metamorphic rock component logging identification method based on a relative hydrogen-containing index. The method comprises the following steps: constructing a relative hydrogen-containing index curve sensitive to the content of dark minerals by using a neutron and density curve; establishing a quantitative calculation formula of the relative hydrogen-containing index and the total content of the non-long quartz minerals; according to the igneous rock component classification standard, solving the relative hydrogen-containing index limit range corresponding to various component metamorphic rocks through a forward modeling method, calibrating and verifying the rock component limit of various metamorphic rocks through an inversion method, and establishing a metamorphic rock component classification model; and calculating the relative hydrogen-containing index of unknown lithology by using the proposed curve construction method, and performing square wave display according to the established metamorphic rock component classification model to realize semi-quantitative logging identification of the unknown lithology rock components of the metamorphic rock. The method can be used for conveniently and accurately quantitatively calculating the sum of the contents of the non-macromineral in the metamorphic rock, semi-quantitatively identifying the rock components, and providing a reliable basis for subsequent logging comprehensive interpretation, rock naming and the like.
Owner:CHINA NAT OFFSHORE OIL CORP +1
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