96 results about "Depositional facies" patented technology

A method for evaluating an earth formation from a well bore, that includes: collecting at least one of geochemical data, petrophysical data and geomechanical data from a wellbore; and identifying depositional facies of the earth surrounding the wellbore. A computer program product and a system are provided.

Using machine learning for sedimentary facies prediction by using one or more logs acquired in a borehole. This includes performing a petrophysical clustering of borehole depths wherein the depths of the borehole are gathered into clusters based on similarities in the one or more logs. Also performed is a log inclusion optimization, including a selection of one or more parameters of the petrophysical clustering, wherein the one or more parameters include a number and/or type of considered logs among the one or more logs and/or a clustering method. Also performed is a classification of the clusters into core depositional facies using one or more predetermined rules.

The present disclosure discloses a method for identifying a boundary of a sedimentary facies, a computer device and a computer readable storage medium. The method comprises: acquiring a preliminary marked result of the sedimentary facies in a seismic attribute map; acquiring a color-based K-means classification result of the seismic attribute map by using a maximal between-cluster variance and a K-means clustering; acquiring a super-pixel classification result of the seismic attribute map according to a SLIC super-pixel segmentation; and performing a region growing fusion on the super-pixel classification result by taking the preliminary marked result and the K-means classification result as constraints, to determine an identification result of the boundary of the sedimentary facies in the seismic attribute map.

The invention belongs to the field of sandstone-type uranium ore favorable zone prediction technology research, and particularly relates to a sandstone-type uranium ore early exploration rapid selection method. The method comprises the steps of 1, collecting and arranging research results and regional geological data of a working area, and defining a basin edge uranium-enriched basement and a rockmass distribution range; 2, determining stratum characteristics and uranium-bearing property of the working area, and determining a main ore-bearing target stratum; carrying out favorable sedimentaryfacies belt distribution characteristic research, and accurately positioning the spatial range of favorable mineralization lithology-lithofacies belt; 3, defining a favorable uranium mineralization age, defining ancient landform characteristics of a favorable mineralization period of an ore-bearing target stratum, and defining the distribution position of a sandstone type confluence channel in the working area; and 4, quickly selecting a favorable exploration area.

The invention belongs to the technical field of uranium mine exploration, and particularly relates to a sedimentary basin edge strong oil and gas reduction area sandstone type uranium mine distant view evaluation method, which comprises the steps of 1, establishing a stratum table; 2, screening a uranium mineralization target layer; 3, delineating a sandstone-type uranium mine distant view evaluation area range; 4, determining a sandstone type uranium mineralization period; 5, determining the time of first large-scale oil gas spill in the sandstone-type uranium mine distant view evaluation area range; 6, compiling a sedimentary facies diagram of a uranium mineralization target layer in the sandstone-type uranium mine distant view evaluation area; and 7, establishing a sandstone-type uranium mine distant view evaluation model of the basin edge strong oil and gas reduction area of the sedimentary basin. According to the method, factors such as stratums, unconformity surfaces, oil-gas reduction, paleooxidation and sedimentary facies are integrated, the sandstone-type uranium ore distant view of the basin edge strong oil-gas reduction area of the sedimentary basin can be quantitativelyevaluated, and evaluation parameters are provided for sandstone-type uranium ore exploration of the area.

The invention relates to a preparation method of a graphene oxide-aluminum-molybdenum trioxide ternary nano-composite energy-containing film. At present, the achievement of the aim on quickly and high-efficiently assembling a multi-component thin film with high heat release in a low-cost way faces the challenge. The preparation method comprises the steps of adopting nano-aluminum powder, grapheneoxide and nano-molybdenum trioxide as depositional facies, and polymine as an additive; and adopting an electrophoretic deposition method to obtain the GO/Al/MoO3 ternary nano-composite energy-containing film. The GO/Al/MoO3 ternary nano-composite energy-containing film prepared through the invention is good in dispersibility, compact in film, and excellent in heat release performance and combustion performance. The preparation method provided by the invention not only can be used for preparing the GO/Al/MoO3 ternary nano-composite energy-containing film, but also can be used for preparing a composite film with multiple particles. The preparation method provided by the invention is simple in process short in period, low in production cost, and suitable for industrial large-scale production.

The invention discloses a geologic model establishing method of a gas injection development oil reservoir, which comprises the following steps: collecting oil reservoir basic data, and establishing abasic database; assigning depth values to the upper and lower fault data of the target interval, and establishing a fault model; generating a three-dimensional skeleton grid; utilizing geological stratification data to establish a layer model; extracting further subdivision of each small layer unit from the reservoir fine division data, determining each rhythm section, forming well point fine description reservoir data, and obtaining a stratum division minimum unit stratum framework model; defining a lithologic value between two rhythm section levels to obtain a reservoir framework model; establishing a sedimentary facies model on the basis of a reservoir framework model, and then establishing a phased reservoir parameter model. The method is used for solving the problem that in the priorart, due to limitation of a geologic model, development optimization adjustment of the gas injection exploitation oil reservoir is delayed, a special geologic model building method is provided for gasinjection exploitation of the oil reservoir, and the purpose of making an overall scheme plan in the earlier stage of development is facilitated.

The invention discloses a method for determining a lithogenous phase boundary point of a carbonate reservoir stratum. In the method, with six geological parameters of sedimentary facies, provenance, apH value, sedimentary cycle, diagenetic stages and fault indexes being lithogenous phase type boundary binding conditions of the carbonate reservoir stratum, in combination with mine lithogenous phase data, lithogenous phase transverse distribution is predicted, and the defects in work of research on lithogenous phase transverse prediction in the prior art are overcome. The method determines theeffectiveness of the stratum, and provides bases for reservoir evaluation.

The invention relates to the technical field of oil reservoir geology, in particular to a method for evaluating a fracturing fracture by using an interference well testing theory. The method comprisesthe steps that the communication condition between a pressure flooding well and surrounding adjacent wells is investigated, and the well cementation quality, a pressure flooding target layer position, dynamic production information and a sedimentary facies belt map of the pressure flooding well are collected; a pressure-flooding pressure real-time monitoring well is determined; the middle depth of an oil reservoir of the pressure real-time monitoring well, the distance between the monitoring well and the pressure flooding well, the dynamic production condition and the conditions of a production string, a wellhead and a well site are determined, and the testing mode is determined to be pressure gauge real-time monitoring; a real-time monitoring scheme is formulated, and test construction steps and requirements are determined; in the pressure flooding process, adjacent well pressure real-time monitoring original data are checked; a well pressure curve is monitored, and pressure floodinginterference time lag analysis is carried out; and pressure flooding fracture evaluation is performed according to a pressure flooding interference time lag interpretation result. According to the provided method for evaluating the fracture, by using the interference well testing principle, the inter-well connectivity is judged and the fracture length is explained by monitoring the adjacent wellpressure.

The invention provides a well-to-seismic multistage constrained glutenite sector sedimentary facies zone fine division method. The method comprises the following steps: counting lithological speeds and densities of glutenite sectors in different facies zones, establishing a forward modeling model, and carrying out seismic facies analysis on the glutenite sector forward modeling model; establishinga glutenite sector period sequence interface; determining seismic facies as a primary constraint condition; determining a logging sensitive curve as a secondary constraint condition; according to theglutenite body period sequence interface tracked in the step 1, establishing a glutenite body structure period sequence model; analyzing a variation function, and determining spatial structure parameters of variables; and outputting a simulation result, and performing plane attribute extraction along the glutenite body period sequence interface tracked in the step 1 to realize the well-to-seismicmultistage constraint phase zone division of sedimentary subfacies and sedimentary microfacies of the glutenite body. According to the well-to-seismic multistage constrained glutenite sector sedimentary facies zone fine division method, the numerical simulation is carried out under a geological model of fine period sequence division and structural period modeling, and the glutenite sedimentary body well-to-seismic numerical simulation sedimentary facies zone fine division is achieved.

The invention discloses a well-to-seismic collaborative sedimentary microfacies division method based on a high-precision sequence framework model, and the method comprises the steps: building a matching relation of well-to-seismic sedimentary facies features based on the lithologic combination of a stratum under a high-precision sequence stratum shelf and the seismic response features of sedimentary body cycle features, and optimizing the seismic attributes sensitive to the types of stratum sedimentary facies; and establishing a three-dimensional data volume for researching sedimentary subfacies and microfacies of a target layer through well-to-seismic collaborative simulation. And verifying the reliability and accuracy of the sedimentary facies three-dimensional data volume through a phase sequence rule, and finally obtaining a sedimentary facies division result suitable for industrial standards. According to the three-dimensional data volume of the sedimentary microfacies, the working efficiency of sedimentary facies division can be greatly improved, the transverse resolution and the longitudinal resolution are high, and the determinacy and the reliability of sedimentary microfacies fine division results are higher.

The invention relates to a method for predicting water inflow, belongs to the technical field of coal, and particularly relates to a multi-working-face goaf water inflow while-mining refined prediction method. According to the invention, stratum deposition rules and sedimentary facies characteristics of stratum are combined, aquifer permeability coefficient partitions are divided, a multi-working-face continuous mining boundary condition refined generalization method based on time, space and water level is provided, a three-dimensional hydrogeological conceptual model and a numerical model ofa research area are established, and the multi-working-face goaf water inflow is predicted in a refined mode. By means of the method, the generalization method of the multi-working-face continuous stopping boundary conditions and the multi-working-face goaf water inflow while-mining continuous fine prediction numerical method are perfected, the water inflow prediction result better conforms to theactual on-site water inflow, and the multi-working-face goaf water inflow prediction precision is improved.

The invention provides a teaching demonstration device for a turbidity sediment experiment and a teaching method of the teaching demonstration device, and relates to an experimental demonstration device. A water tank body comprises water tanks A (6) and water tanks B (9) which are arranged oppositely in the vertical direction. According to the teaching demonstration device for the turbidity sediment experiment, four blending formulas for water, mud and sand content of sedimentary turbidity current are provided according to the characteristics of four types of sedimentary turbidity current including gravel-rich type sedimentary turbidity current, sand-rich type sedimentary turbidity current, sand-mud mixed type sedimentary turbidity current and mud-rich type sedimentary turbidity current, the geological characteristics of each geologic sedimentary turbidity current are distinguished in a refined manner, the movement characteristics of each type of sedimentary turbidity current are comparatively demonstrated by the two water tanks with adjustable slope, the turbidity current flow rate is adjusted according to size and length of the slope, then sediment discharge in the turbidity current is observed, the geological knowledge of turbidity sediment is obtained, strictness and completeness of experimental operation are guaranteed, and students are helped to master the geological turbidity sediment related knowledge comprehensively and finely.

The invention provides a non-dominant facies mapping method for a sedimentary facies. The method comprises (1) identifying a main force microfacies and an non-main force microfacies in the formation to be mapped to obtain a dominant sedimentary facies and a non-dominant sedimentary facies of the formation units to be mapped; (2) carrying out a sub-segment division for the obtained the dominant sedimentary facies and the non-dominant sedimentary facies, so that each sub-segment represents one or one stage sedimentary microfacies; (3) distinguishing the dominant sedimentary facies and the non-dominant sedimentary facies types of all sub-sections of a single well to obtain the types of all the dominant sedimentary facies and the non-dominant sedimentary facies; 4)determining a combination principle of the dominant sedimentary facies and the non-dominant sedimentary facies, and performing sedimentary facies spatial combination on the dominant sedimentary facies and the non-dominant sedimentary facies; 5)and compiling a profile phase diagram according to the obtained types of all the dominant sedimentary facies and the non-dominant sedimentary facies and the determined combination principle of the dominant sedimentary facies and the non-dominant sedimentary facies to obtain the sedimentary facies mapping results considering the non-dominant facies. The method can be widely applied to the field of sedimentary facies mapping.

The invention relates to an under-salt lake facies limestone reservoir prediction method and system under the condition of few wells, and the method comprises the steps: obtaining post-stack seismic data, carrying out the time depth calibration through combining with drilling information, dividing an under-salt lake facies limestone reservoir into an isochronous interface and a secondary isochronous interface, and constructing a stratum position frame through the isochronous interface and the secondary isochronous interface; seismic attributes are calculated, facies zone division of subsalt lake facies limestone reservoir sedimentary facies is carried out based on the seismic attributes and the sequence interface body, and a plurality of virtual well points are arranged on different facieszones; extracting a longitudinal wave speed of the virtual well point, establishing a nonlinear mapping relationship from the longitudinal wave speed to a transverse wave speed and a density parameter by utilizing a BP neural network, calculating the transverse wave speed and the density parameter according to the nonlinear mapping relationship, generating a model data body in combination with astratigraphic horizon framework, and performing low-pass filtering on the model data body to obtain a low-frequency model; and inverting the model to obtain a limestone reservoir structure. Accordingto the method, the multiplicity of solutions caused by manual interpretation of a sequence interface is avoided, the established low-frequency model better conforms to the geological characteristics of lacustrine limestone, and the reliability of an inversion result is higher.

The invention belongs to the field of quantitative characterization of sedimentary facies, particularly relates to a quantitative characterization method and system for sedimentary facies evolution based on geology and geophysics. The invention aims to solve the problem that quantitative characterization of sedimentary facies evolution cannot be systematically and systematically realized by utilizing a geophysics technology under the constraint of a geological model in the prior art. The method comprises the following steps: establishing a high-resolution sequence stratigraphic frame by using a core sample, a logging data body and an earthquake data body, and acquiring a three-dimensional sequence interface on an earthquake data volume; acquiring an approximate ancient landform map of a sedimentary period through combination with a travel time difference representing the terrain height of the sedimentary period; with the high-resolution sequence stratigraphic frame as a model, carrying out logging-seismic combined wave impedance inversion; carrying out stratigraphic slice attribute analysis on a wave resistance body; establishing a sand-to-ground ratio-wave impedance mapping relation; and dynamically and quantitatively representing a sedimentary facies evolution process based on the sand-to-ground ratio-wave impedance mapping relation. According to the method, the dynamic and quantitative characterization of the sedimentary facies evolution process in the high-resolution sequence stratigraphic frame can be realized.

The invention discloses a saturation modeling method with equivalent J function constraint. The saturation modeling method with the equivalent J function constraint comprises the following steps of 1)establishing a sedimentary microfacies model, a porosity model and a permeability model of a target work area; 2) establishing a height model above an oil-water interface according to the oil-water interface; 3) establishing an equivalent J function model; 4) generating a height logging curve above the oil-water interface of each single well in the target working area; 5) generating an equivalentvariable curve of different sedimentary facies; 6) establishing an intersection graph of the equivalent variable curve and a logging water saturation curve under different sedimentary facies conditions, and establishing a linear fitting distribution function; 7) converting the equivalent J function model generated in the step 3) into a fitted water saturation geological model; 8) establishing anoil-containing boundary model; and 9) obtaining a water saturation model after boundary constraint, further obtaining an oil saturation model of the target work area, and obtaining a geological modelof the original oil saturation of the oil reservoir.

The invention discloses a lithologic trap depicting method, and belongs to the technical field of oil and gas exploration, and the lithologic trap depicting method comprises the following steps: S1, selecting data capable of meeting lithologic trap depicting requirements; S2, identifying a dominant sedimentary facies belt; S3, recognizing the type of the slope folding belt and the distribution range of the slope folding belt, and determining favorable sand body distribution based on the slope folding belt; S4, carrying out quantitative depiction on the favorable sand body distribution to complete depiction of the lithologic trap. According to the method, the lithologic trap of the offshore middle-deep layer can be quantitatively depicted, and a technical basis is provided for lithologic exploration.

The invention provides a platform facies thick layer limestone sedimentary facies depicting and predicting system and method. The platform facies thick layer limestone sedimentary facies depicting and predicting system comprises a single well relative dominant facies determining module, a multi-attribute fusion seismic facies predicting module and a seismic facies predicting module. The single well relative dominant facies determination module comprises a single well sedimentary microfacies identification module and a single well relative dominant facies determination module; and the single well sedimentary microfacies identification module is used for dividing sedimentary microfacies on a single well by inputting and observing related information of sedimentary microfacies types in a limestone sedimentary system determined by rock cores, rock slices and ancient biomarkers and combining well logging interpretation with a facies law. And the type of the sedimentary microfacies in the layer is analyzed, and the relative proportion of the thickness of the beach facies and the thickness of the non-beach facies (the sedimentary microfacies except the beach) on the single well is calculated. According to the method, the problems that quantitative analysis cannot be realized and multiple solutions exist in sedimentary microfacies prediction in a reservoir with relatively small lithology change are solved.