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2008•Journal of Chongqing University of Science and TechnologyRequires access

Study on Sedimentary Microfacies of the Chang-6_1～1 Reservoir in Wangyao District of Ansai Oilfield

Yali Chen

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Abstract

The origins of Chang-611 reservoir horizonsin Wangyao district of Ansai oilfield are interpreted to be a delta deposited in lacustrin environment.The mains edimentary microfacies of Chang-611 reservoir horizons in Wangyao district include distributary channel,river’s side sandsheet distributary mouthbar,sandsheet and inter distributary deposits.The deltaic microfacies are interpreted and delineated based on depositional sequence,log curves and sandbody geometry.Comprehensived escriptions of sedimentary microfacies and the distribution of sandbody are good methods to predict reservoir performance.

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What this paper is about

The origins of Chang-611 reservoir horizonsin Wangyao district of Ansai oilfield are interpreted to be a delta deposited in lacustrin environment.The mains edimentary microfacies of Chang-611 reservoir horizons in Wangyao district include distributary channel,river’s side sandsheet distributary mouthbar,sandsheet and inter distributary deposits.The deltaic microfacies are interpreted and delineated based on depositional sequence,log curves and sandbody geometry.Comprehensived escriptions of sedimentary microfacies and the distribution of sandbody are good methods to predict reservoir performance.

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Available abstract

The origins of Chang-611 reservoir horizonsin Wangyao district of Ansai oilfield are interpreted to be a delta deposited in lacustrin environment.The mains edimentary microfacies of Chang-611 reservoir horizons in Wangyao district include distributary channel,river’s side sandsheet distributary mouthbar,sandsheet and inter distributary deposits.The deltaic microfacies are interpreted and delineated based on depositional sequence,log curves and sandbody geometry.Comprehensived escriptions of sedimentary microfacies and the distribution of sandbody are good methods to predict reservoir performance.

Key concepts: Sedimentary depositional environment, Geology, Delta, Sedimentary rock, Geomorphology, River delta, Channel (broadcasting), Geochemistry

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