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Sedimentary facies of deep sequences of Anpeng Oilfield in Biyang Depression and its control over oil-gas distribution(PDF)

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

Issue:
2005年第02期
Page:
48-51
Research Field:
Publishing date:

Info

Title:
Sedimentary facies of deep sequences of Anpeng Oilfield in Biyang Depression and its control over oil-gas distribution
Author(s):
MING Hai-hui1; JIN Zhen-kui1; LI Qing-zuo2; QU Yan-ming2; CHEN Xiang 3
1.School of Resources and In formation,University of Petroleum,Beijing 102249,China; 2.Daqing Oilfield Company, PetroChina,Daqing Heilongjiang 163000,China; 3. Henan Oilfield Company,SINOPEC,Nanyang Henan 473132,China
Keywords:
Biyang depression;  Anpeng Oilfield;  depositional feature;  sedimentary facies;  oil-gas accumulation;  Henan Province
PACS:
P618.130
DOI:
-
Abstract:
This paper discussed the sedimentary facies type and the characteristics of deep sequences of the Anpeng oilfield on the basis of drilling core studies and analyses of logging, recording and production dynamic data. Analytical results show that Anpeng deep sequences belong to near-source fan-deltaic deposits. Certain microfacies can be further determined and they include upper, middle, lower and marginal fans, suggesting a sedimentary model in relation to the fan-delta environ- ment of deep sequences. In addition, the correlation between sedimentary facies and oil-gas distribution was recognized to have been related to the physical property of reservoirs. Specifically, the middle fan with a good physical property tends to be a favorable site for oil-gas accumulation, whereas in respect of lower and marginal fans this capability is relatively limited.

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