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

Issue:

2010年第02期

Page:

155-160

Research Field:

基础地质与矿产地质

Publishing date:

Info

Title:

Characteristics of Quan-4 Formation Sandstone Diagenetic Sequence and Porosity Evolution in Longxi Area of Songliao Basin

Author(s):

LIAN Cheng-bo¹;  ZHONG Jian-hua²; 3;  YANG Yu-fang³;  QU Fang¹;  YANG Jun⁴

(1.School of Resources and Environment, Southwest Petroleum University, Chengdu 610500, Sichuan, China; 2.School of Geo-resources and Information, China University of Petroleum, Dongying 257061, Shandong, China; 3.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China; 4.Institute of Exploration and Development, Daqing Oilfield Company, China National Petroleum Corporation, Daqing 163712, Heilongjiang, China)

Keywords:

diagenetic sequence;  porosity evolution;  Quan-4 Formation;  Longxi area;  Songliao Basin

PACS:

TE122.2

DOI:

-

Abstract:

Based on core, cast thin section, scanning electron microscope, X-ray diffraction and so on, the characteristics of petrology, types of diagenesis, division of diagenetic stage, diagenetic concordant sequence and porosity evolution in Quan-4 Formation sandstone in Longxi area of Songliao Basin are studied. The results show that the lithology is mainly feldspathic litharenite, and secondly lithic arkose; types of diagenesis are compaction, authigenic quartz cementation, authigenic clay mineral cementation, carbonate cementation, metasomatism and dissolution; the diagenetic stage in Quan-4 Formation is A period mesogenetic stage, and divided into A1 and A2 substages; diagenetic, compaction and cementation decrease the primary pore structure intensively, however dissolution improves it effectively; pore type is changed from reduced intergranular pore into combination of reduced intergranular pore and corrosion intergranular pore gradually because of diagenetic evolution.

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Memo

Memo:

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Common functions

Last Update: 2010-06-20