Sand Control Model and Exploration Practice for East Wushi Sag Strike Slope

doi:10.11885/j.issn.1674-5086.2016.03.21.02

Abstract

Abstract: Considering the key problems of complex sediment provenance, rapid facies variation and difficulties in locating and predicting high-quality reservoirs in the Wushi Sag continental rift basin, we have carried out a detailed analysis on the fault evolution stage, plane activity variability along the fault cross-section, and sedimentation system. Using key techniques, such as fine identification and description of marine continental complex fault block/fault, micro landform restoration, and faciescontrolled reservoir prediction, we arrived to the conclusion that the dominant sand-body distribution could be determined from the strike slope formed by differential activity of three NE-direction sedimentary faults. We have also proposed a source-sink time-space coupling model for sand control, and predicted the development of a high-quality reservoir on the downthrown side of the F₂ fault. Guided by these results, a new drilling was initiated, which led to the discovery of a major oil reservoir. This has greatly promoted the exploration and development of the Wushi Oilfield.

Key words: Wushi Sag, strike slope, source-sink time-space coupling, high quality reservoir, major discoveries

CLC Number:

TE122.2

XU Xuefeng, HU Lin, MAN Yong, XUE Hongtao, LI Anqi. Sand Control Model and Exploration Practice for East Wushi Sag Strike Slope[J]. 西南石油大学学报(自然科学版), 2017, 39(3): 77-84.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2016.03.21.02

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