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Reconstruction method for ancient geological evolution of sedimentary sand body provenance area

A paleogeology and provenance technology, which is applied in the reconstruction of paleogeological evolution in the provenance area of ​​sedimentary sand bodies, and can solve the problems of insufficient precision and large time span.

Inactive Publication Date: 2021-07-23
OIL & GAS SURVEY CGS
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Problems solved by technology

[0013] The purpose of the present invention is to address the deficiencies in the above-mentioned technologies, and propose a method for reconstructing the paleogeological evolution of sedimentary sand body provenance areas, aiming at solving the problem that the existing paleogeological evolution methods of provenance areas have a large time span and insufficient precision one of the problems

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  • Reconstruction method for ancient geological evolution of sedimentary sand body provenance area

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[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indic...

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Abstract

The invention provides a reconstruction method for ancient geological evolution of a sedimentary sand body provenance area, which comprises the following steps: S1, collecting geological data of the provenance area and an adjacent area, and collecting drilling data of the provenance area at the same time; s2, recovering the distribution of residual strata in the material source area; s2, recovering the distribution of residual strata in the material source area; s3, collecting the gravity of the provenance region and the adjacent region and the seismic data of the sedimentary basin; s4, recovering the ancient landforms of the provenance area and the basin; s5, identifying a material source channel of the sedimentary body in the basin; s6, collecting conglomerate data of a target interval in the basin; s7, describing gravel components, age and plane and vertical distribution characteristics in the conglomerate; s8, recovering material source information reflected by gravels in the conglomerate to the provenance area layer by layer; and s9, reconstructing the ancient geological evolution of the provenance area; and the reconstruction method for ancient geological evolution of the sedimentary sand body provenance area is simple and easy to operate, can predict basin sedimentary systems and reservoir distribution, and guides exploration and development of petroleum and natural gas mineral resources in petroliferous basins.

Description

technical field [0001] The invention relates to the technical field of petroleum geological exploration, in particular to a method for reconstructing paleogeological evolution of sedimentary sand body source areas. Background technique [0002] The composition of the parent rock in the provenance area determines the characteristics of the rock composition in the depositional area, and the distribution of reservoirs in the depositional area is affected and controlled by the composition of the parent rock in the denudation area. The paleogeological evolution reconstruction of the provenance area is an important content in the analysis of oil and gas-bearing basins. Through the reconstruction of the paleogeological evolution of the provenance area, the location and nature of the provenance area of ​​the sedimentary sand body and the transportation path of the sediment can be solved, and the geological factors affecting the composition of the sedimentary rock can be grasped. As ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 刘晖姜在兴
Owner OIL & GAS SURVEY CGS
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