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Research on Sedimentary Systems and Prediction on Favorable Sandstone Bodies of Ganchaigou Formation in Yuejin Area of Qaidam Basin

Author: ChenWuJie
Tutor: YuanJing
School: China University of Petroleum
Course: Geology
Keywords: Qaidam Basin Yuejin Area Ganchaigou Formation Sedimentary facies Depositional systems Layer strata Sand prediction
CLC: P618.13
Type: Master's thesis
Year: 2010
Downloads: 134
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Abstract


In this paper, on the basis of previous studies , the full use of existing drilling , well logging , seismic and analysis of laboratory data , high resolution sequence stratigraphy theory , the use of fine stratigraphic division and correlation technology , high-precision classification research area three sequence stratigraphic correlation framework ; use of heavy mineral assemblages and the ancient landform development characteristics determine the provenance direction ; divided by a single well to focus well , even the well -phase and in-depth study of the plane sedimentary facies sedimentary facies types established logging - correspondence between logging facies and sedimentary facies and facies model . Detailed study of three sequence sedimentary facies and system distribution rule and even well Sedimentary relative ratio analysis , in-depth characterization of reservoir physical properties and sedimentary facies relationships ; combined study area based on a typical lithologic reservoirs wells jump 73 wells anatomical analysis, predicted from a three-dimensional perspective of the study area may be beneficial sand body distribution of orientations . The study clearly Yuejin Area the Paleogene Ganchaigou Formation deposited with a sustained source characteristics . Area Ganchaigou Formation period alluvial fan - braided river - a braided river delta - lakes ( turbidite fan ) deposition system . Leap Ganchaigou Formation wells - shock unified three layer sequence stratigraphic framework established for the first time , and isochronous stratigraphic framework of the District Ganchaigou Formation sand distribution meticulous research , combined with the study area carbonate reservoir development mode and depositional model plane sedimentary facies and even well sedimentary facies distribution point , proposed E32 late jump 82 wells east side of two relatively uplift the algal limestone reservoir favorable distribution area of the study area E31 E31 the late Yuedong 31 well east of the development of high-quality beach bar sand body .

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Fuel deposits > Oil, natural gas
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