35 results about "Provenance" patented technology

A method is provided for efficiently characterizing rock traversed while drilling a borehole for hydrocarbon reservoir development. A rock sample can be obtained having a provenance of collection linked to a specific region of the borehole, which is scanned to obtain a 2D digital image that is segmented to pixels characterized as pore space and as mineral matrix and defining a boundary between them. A transform relationship, for example, a form of the Kozeny-Carman equation adapted for application to a 2D segmented image environment, can be applied to calculate the estimated value for a target rock property, which can be absolute permeability, relative permeability, formation factor, elasticity, bulk modulus, shear modulus, compressional velocity, shear velocity, electrical resistivity, or capillary pressure, and the estimated value is used to characterize the rock at that region of the borehole. This affords an opportunity to quickly and efficiently develop massive data directly characterizing extended regions of rock, whether traversed by the borehole in this or a related well. Computerized systems, computer readable media, and programs for performing the methods are also provided.

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 discloses a method for measuring and calculating the starting critical depth of solid matter in mud-rock flow and the maximum flushing total amount, and a method for predicting the scale of mud-rock flow. Aiming at the defects in the existing technology that there are differences in the measurement accuracy of various measurement and calculation due to the difference in the research area, and that the universality of various measurement and calculation schemes is not high and the application is obviously limited, the present invention provides a measurement and calculation of the critical depth of the start-up of debris flow solid matter method and its application. According to the water source conditions and solid material conditions in the provenance area, it is judged that the start-up of debris flow in the provenance area belongs to the unsaturated seepage-runoff start-up mode, or the unsaturated seepage start-up mode, and then calculate the start-up critical depth. This method is a fully quantitative calculation method based on a dynamic model, which can specifically solve the defects that the existing technology is limited to a specific provenance area object and insufficient calculation of unexpected extreme debris flow disaster events that deviate from the constant value. The invention also provides a method for measuring and calculating the maximum total amount of mud-rock flow and its application, and a method for predicting the activity scale of mud-rock flow.

The invention relates to a method utilizing lithological combination identification sedimentary facies. The method comprises the following steps that S1, the lithological combination index of a study layer section is collected and processed; S2, the depositional environment is judged utilizing the mudstone color index; S3, sedimentary facies belt is judged utilizing the mudstone thickness index; S4, the material source stability is judged utilizing the sandstone thickness disparity; S5, the study layer section lithology is judged utilizing the lithology index; S6, the hydrodynamic strength is judged utilizing the sandstone grain size index; S7, the grain size variation is judged utilizing the sandstone grain size variation index; S8, the material source stability is judged utilizing the sandstone thickness index; S9, the ranges of the sedimentary facies form step S2 to step S8 is reduced step by step according to the study layer lithological combination index, so that the sedimentary facies is judged; and the step S2 to step S8 are not sequential.

The present invention provides a method and device for calculating the denudation rate of the source area of ​​a sedimentary basin. The planar position of the source area, transport area and converging area; the plane area and the number of sedimentary bodies in the converging area can be obtained by statistics; the average thickness of the sedimentary body in the converging area can be obtained by statistics; The cross-sectional area of ​​the channel and the extension length of the transport channel; determine the denudation area area of ​​the provenance area and the denudation duration of the target interval; calculate the denudation rate of the provenance area of ​​the sedimentary basin. This method realizes the accurate calculation of the denudation rate of the source area of ​​the sediment, quantitatively characterizes the denudation rate of the source area of ​​the sedimentary basin, and is conducive to improving the accuracy of the restoration of paleogeomorphology and paleoclimatic conditions during the sedimentary period of the target interval.

The invention provides a water system deposit sediment element or mineral survey data integrated and displaying method by taking an opening catchment basin as a unit, relating to the technical field of exploration geochemistry. The method adopts GIS development technology to treat the water system and the catchment basin with a conventional method, so as to obtain the opening catchment basin; by taking the opening catchment basin as a unit, elements or mineral kinds and the corresponding content of all sampling points in the basin are counted to build an element or mineral combined model, thecalculated result is used as basin property, and achievement expression is carried out by using the opening catchment basin. The invention can directly display the water system deposit sediment element or mineral provenance range or the direction of mineral migration, so as to be convenient for analysis and mapping and field checking of spatial distribution regularities.

A method for restoring the original sedimentary appearance of a strike-slip reformed basin, including the following steps: (1) Determine the strike-slip reformed basin, clarify whether the sedimentary body associated with the strike-slip fault has experienced strike-slip fault segment reformation, and further determine from 3 aspects to be determined and judged. For basins that have undergone strike-slip reformation, (2) synchronous strata-sediment relationship and (3) provenance relationship analysis should be carried out in sequence. Among them, the distribution patterns of paleocurrents and high-precision detrital zircon provenance tracing can indicate whether each residual basin has a common provenance area and the possible source area location. On the basis of the above three-step analysis, (4) estimate the dislocation distance and restore the original sedimentary appearance for the strata on both sides of the strike-slip fault in the same period. The objective restoration of its original sedimentary appearance is the basis for objectively understanding the paleogeographical appearance and basin-mountain paleo-tectonic pattern in the geological history period, as well as the basis for scientific evaluation of oil and gas resources and efficient exploration deployment, so its research significance is very important.