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

Reservoir Fine Description of Complex Fault-block Oilfield in Re-development Phase

Author XuZuoZuo
Tutor FangDeQing
School Daqing Petroleum Institute
Course Mineral prospecting and exploration
Keywords Reservoir description Microfacies Reservoir heterogeneity Remaining Oil Distribution
CLC P618.13
Type Master's thesis
Year 2010
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At present, most old oilfields in the \, production rate decreased. In this context , in order to improve the old oil field development in the latter part of the efficiency of mature oilfields proposed \\In this paper, Dagang Oilfield East Harbor pilot , well logging and seismic data , integrated application sedimentary petrology , reservoir geology and other disciplines theory, complex fault block oil fields around the geological features , mainly from the stratigraphy, tectonics , sedimentary , monosandbody characterize the internal structure , reservoir characteristics , reservoir , and several other aspects of the development process to describe the secondary geological characteristics and variation . First, according to the underlying data and log interpretation stratigraphic division and correlation of Fine implement stratigraphic framework ; based on seismic data , comparative data for individual well constructed system fault analysis ; core data using well facies , sand thickness data , logging facies division sedimentary facies , combined with dynamic data analysis monosandbody configuration ; based core experiment data, such as porosity, permeability , combined with sand thickness maps, sand shale interlayers in vivo characteristics of the reservoir ; then, based on log interpretation and testing data for reservoir characterization and development of reservoir characteristics before and after change analysis , the final thickness and bearing area under the effective single storage coefficient complete calculation of reserves , reserve changes for analysis ; By combining static and dynamic analysis of residual oil distribution and accumulation in the forecast surplus oil distribution area , reasonable mining opinions. Through analysis, the Dagang oilfield Port Minghuazhen an area divided into 79 small layer . Sure work area is fluvial sedimentary depositional environment . Divided into point bar , the final river , abandoned channel , crevasse splay , overbank sand, flood plains six kinds of sedimentary facies . Main reservoir for the point bar . Reservoir to fine feldspathic lithic sandstone , sorting better, mainly argillaceous cement , cement loose . High porosity and permeability pore type coarse throat .

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