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Sedimentary Characterization of Shanshan Oil Fields Qiketai Formation

Author: JieXiaoJing
Tutor: LiuChengZhi
School: Northeast University of Petroleum
Course: Geological Engineering
Keywords: Sedimentary characterization High resolution sequence stratigraphy Sedimentary microfacies Reservoir heterogeneou Qiketai
CLC: P512.2
Type: Master's thesis
Year: 2011
Downloads: 27
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Abstract


The article is based on Shanshan Oil Fields as the research object. According to the sedimentology、Petroleum geology、high-resolution sequence stratigraphy、Logging geology、Reservoir sedimentology and other Related science theory. On the basis of logging data, ombined with seismic, logging and core data now we have, discuss the section of reservoir Sedimentary characteristics、reservoir quality、the range of profitability etc.This research founded on the original geologic zonation, the study of division about substrata is more right in principle According to the high-resolution sequence stratigraphy. The target area of Qiketai be divided into one sand sets, four layers, eight single sand bodies.based on substrata division and the study of precipitation facie sign、electrofacies sign、seismic facies sign and other reservoir bed deposit feature, dimensional analysis of the depositional system, determined that shore-shallow lake and braidedriver delta are the main depositional model of Qiketai, sedimentary microfacies of marshs and sand bank can be recognized in shore-shallow lake sediments, sedimentary microfacies of submerged distributary channell、mouth bar sand、braided channel and other three can be recognized in braidedriver delta depositional.Based on the analysis of single well facies of s10-131,determined microfacies characteristic of each layer. The lifting movement of the base level of deposition in target area was analyzed by the method of sequence analysis, and single-well phase, Compared with well profile and phase plane was analyzed, and then distribution of sand bodies and the distribution of surface features was precisely characterized.Through the study on the features such as reservoir physical property andnon-homogeneous,come to the conclusion that the study area is relatively inflexible;Use of oil reservoir thickness, porosity and permeability to study on classification and characteristics of reservoir, on the basis of analysis of the sedimentary facies and sand body to research the distribution of residual oil.

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CLC: > Astronomy,Earth Sciences > Geology > Dynamic geology > External force > Denudation,handling the role of the deposition
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