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The Study Of Sedimentary Facies Of Penglaizhen Formation, Baimamiao-Songhua Area, The South Of West Sichuan Sag

Posted on:2004-10-31Degree:MasterType:Thesis
Country:ChinaCandidate:Y G ZhaoFull Text:PDF
GTID:2120360095462520Subject:Mineral prospecting and exploration
Abstract/Summary:PDF Full Text Request
Baimamiao-Songhua area is located in Qionglai county, the south of west Sichuan sag , area of which is less than 300 square kilometers. Penglaizhen Formation pool has already become a main reservoir in Baimamiao Gas Field, but these questions of its facies and distribution of sand bodies and so on are nearly vague.This thesis has carried out stratigraphic classification and correlation and established isochronstratigraphy unit frame in Penglaizhen Formation of the study area and its vicinity, based on the theory and methods of high-resolution sequence stratigraphy. Under the guidance of the principles and the classical way and process of subdividing sedimentary facies into, this thesis has analysed sedimentary facies of Penglaizhen Formation, especially III , IV Member of Penglaizhen Formation in middle-term base-level cycle isochronstratigraphy unit frame.Through the analysis of petrology characteristics and individual well section of sedimentary facies of five core holes, direction of sedimentary source area, the depositional framework and main facies types and its features of Penglaizhen Formation, Baimamiao-Songhua area are elaborated on the basis of sedimentary backgroud of region. From this above, in view of the study of the correlation of 3 cross sections of sedimentary facies ,it is pointed out that distribution regularities of sedimentary facies and possible places of distribution of sand bodies of III, IV Member of Penglaizhen Formation are vertically and laterally developed in Baimamiao-Songhua area. By the analysis and contrast of seven plans of sedimentary facies and nine isopach maps of sandstone, the planar characteristics of distribution of sedimentary facies are summarized, meanwile, macroscopic distribution regularities of sand bodies is studied in III, IV Member, Penglaizhen Formation of Baimamiao-Songhua area.
Keywords/Search Tags:high-resolution sequence stratum, sedimentary facies, Distribution of sand bodies, Penglaizhen Formation, Baimamiao-Songhua area
PDF Full Text Request
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