Study on Sedimentary and Evolution Characteristics of the Yanchang Formation in Western Exploratory Area of Fengfuchuan Oilfield in Ordos Basin

ZHENG Zhong-wen; WU Yan-jun

Northwestern Geology > 2014 > 47(3): 110-120.

ZHENG Zhong-wen, WU Yan-jun. Study on Sedimentary and Evolution Characteristics of the Yanchang Formation in Western Exploratory Area of Fengfuchuan Oilfield in Ordos Basin[J]. Northwestern Geology, 2014, 47(3): 110-120.

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Study on Sedimentary and Evolution Characteristics of the Yanchang Formation in Western Exploratory Area of Fengfuchuan Oilfield in Ordos Basin

ZHENG Zhong-wen^1,2,
WU Yan-jun²

1. The School of Earth Science and Resources, Chang'an University, Xi'an 710054, China;
2. Qinghuabian Oil Production Plant, Yanchang Oil Field Co., Ltd, Xi'an 716000, China

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Received Date: June 14, 2014
Revised Date: August 09, 2014
Available Online: July 28, 2022
Published Date: September 04, 2014

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Abstract

Abstract

The western exploratory area of Fengfuchuan Oilfield is a composite petroliferous region of multilayer and low permeability. The reservoir sedimentary is complicated. The sedimentary and evolution control the reservoir enrichment in a large part. This paper deeply analyzed the sedimentary facies, provenance and the sedimentary structure of Chang 2, Chang 4+5 and Chang 6 in the main oil-bearing series of Yanchang formation, then multiphase system of sedimentary succession was established and sedimentary evolution was analyzed. The results indicated that Yanchang formation mainly developed delta sedimentary system; sediments were imported into Basin from northeast to southwest through distributary channel and channel distribution in different period of the development had a good inheritance which fully illustrated the deposit scale and characteristics of sedimentary evolution of Yanchang formation in the main oil-bearing segment; better inheritance of the channel distribution and a good reservoir cap assemblage in the same layer will provide reliable support for the next exploration of favorable reservoir enrichment zone.
- Sedimentary facies flag,
- Provenance,
- Sedimentary evolution

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References (38)

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Study on Sedimentary and Evolution Characteristics of the Yanchang Formation in Western Exploratory Area of Fengfuchuan Oilfield in Ordos Basin

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