|Table of Contents|

High-frequency Sequence Stratigraphy and Hydrocarbon Accumulation Model of Cretaceous in Western Slope of Beisantai Uplift, Junggar Basin(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2012年第02期
Page:
41-48
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
High-frequency Sequence Stratigraphy and Hydrocarbon Accumulation Model of Cretaceous in Western Slope of Beisantai Uplift, Junggar Basin
Author(s):
BAI Xiao-jia1;  KANG Yong-shang1; 2;  LI Pei-jun3;  ZENG Jun4;  WANG Jian4; QI Xue-feng4;  ZHONG Quan-feng3
1. School of Geosciences, China University of Petroleum, Beijing 102249, China; 2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China; 3. Zhundong Oil Recovery Factory, Xinjiang Oilfield Company, Sinopec, Fukang 831511, Xinjiang,China; 4.Xinjiang Oilfield Company,Sinopec, Karamay 834000, Xinjiang, China
Keywords:
high-frequency sequence;  accumulation model;  nasal process;  lithologic pinchout;  stratigraphic overlap;  Cretaceous;  Beisantai uplift;  Junggar Basin
PACS:
P618.13; TE122
DOI:
-
Abstract:
Based on Vail classic sequence stratigraphy theory, according to the core, well logging and seismic data, the sequence stratigraphic framework of Cretaceous in western slope of Beisantai Uplift, Junggar Basin was established by the well-seismic correlation comprehensive analysis method; high-frequency sequences for the main system tracts with hydrocarbon were divided; the structural characteristics and hydrocarbon accumulation models of parasequences with hydrocarbon were comprehensively studied, and the accumulation characters were summarized; the direction for exploration of subtle reservoirs of Cretaceous was shown. The results showed that Cretaceous in western slope of Beisantai Uplift could be divided into four third-order sequences and six system tracts; hydrocarbon showing mainly distributed in low system tract and transgressive system tract of SQ2, which could be divided into four parasequence sets and fourteen parasequences, and three of the parasequences were high-frequency sequence stratigraphic units of Cretaceous with hydrocarbon through hydrocarbon homing; three stratigraphic units with hydrocarbon at the bottom of Cretaceous were overlap and pinchout, and the structural configuration could be divided into Shanan, Xiquan and Bei38 nasal processes; there were Xiquan and Bei38 nasal process accumulation models in the typical oil points, the former was controlled by lithologic pinchout in the slope, and the latter was controlled by complex structural and stratigraphic lapouts; Cretaceous accumulation was controlled by nasal structure, partial fracture, stratigraphic overlap pinchout line and lithologic break zone. In general, the next exploration target of Cretaceous in westen slope of Beisantai Uplift, Junggar Basin should be mainly stratigraphic trap near the stratigraphic overlap pinchout lines of Xiquan and Bei38 nassal processes.

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Last Update: 2012-06-20