Development characteristics of lithologic reservoirs and sequence architecture in Beier Rift

ZHANG Qiang; LIU Shengguo; ZHANG Junsong; WANG Jian; FENG Jingsha

doi:10.3969/j.issn.1673-8926.2012.04.001

Lithologic Reservoirs >

2012 , Vol. 24 >Issue 4: 1 - 7

DOI: https://doi.org/10.3969/j.issn.1673-8926.2012.04.001

Development characteristics of lithologic reservoirs and sequence architecture in Beier Rift

ZHANG Qiang ,
LIU Shengguo ,
ZHANG Junsong ,
WANG Jian ,
FENG Jingsha

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PetroChina Research Institute of Petroleum Exploration & Development， Beijing 100083， China

Online published: 2012-08-20

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Abstract

By using 3D seismic data, log curves and core data, and in the light of principle of tectonics and sequence stratigraphic analysis, this paper studied the Lower Cretaceous sequence architecture, depositional systems and development characteristics of lithologic reservoirs in Beier Rift. Five super sequences（second order sequences）, corresponding to five rifting episodes respectively, and ten third-order sequences within super sequences 2 to 5 were identified. The second and third rifting episodes correspond to the Lower Cretaceous Tongbomiao Formation and Nantun Formation respectively, they are characterized by extensional tectonic movement, and fan delta depositional systems and sequences architecture in syndepositional fault slope breaks are developed. The forth rifting episode corresponds to the Lower Cretaceous Damoguaihe Formation, it is characterized by strike-slip tectonic movement, and fluvial delta systems and sequences controlled by syndepositional flexure slope break zones and fault slope break zones are developed. The fifth rifting episode corresponds to the Lower Cretaceous Yimin Formation, it is characterized by transition movement from rifting to depression, and fluvial and flood plain depositional systems and alluvial sequences are developed. Sand bodies of lowstand system tracts of sequences in syndepositional fault slope breaks of the Lower Cretaceous Tongbomiao Formation and Nantun Formation are favorable for hydrocarbon accumulation.

Key words： quadratic pressure gradient; stress sensitivity; horizontalwell; productivity; conformal transformation

Cite this article

ZHANG Qiang , LIU Shengguo , ZHANG Junsong , WANG Jian , FENG Jingsha . Development characteristics of lithologic reservoirs and sequence architecture in Beier Rift[J]. Lithologic Reservoirs, 2012 , 24(4) : 1 -7 . DOI: 10.3969/j.issn.1673-8926.2012.04.001

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