石油与天然气地质 ›› 1995, Vol. 16 ›› Issue (3): 259-264.doi: 10.11743/ogg19950310

• 论文 • 上一篇    下一篇

塔北侏罗-三叠系成岩反应

蔡春芳, 梅博文, 马亭, 柳常青   

  1. 江汉石油学院, 湖北荆沙, 434102
  • 收稿日期:1995-03-31 修回日期:1995-05-05 出版日期:1995-09-25 发布日期:2012-01-16
  • 基金资助:

    国家“八五”科技攻关项目成果(85-101)

DIAGENETIC REACTION OF JURASSIC-TRIASSIC SYSTEM IN NORTH TARIM

Cai Chunfang, Mei Bowen, Ma Ting, Liu Changqing   

  1. Jianghan Petroleum institute, Jingsha, Hubei
  • Received:1995-03-31 Revised:1995-05-05 Online:1995-09-25 Published:2012-01-16

摘要:

塔北隆起侏罗-三叠系连续埋藏砂泥岩体系成岩反应主要受温阶控制,在90~135℃温度范围内油田水中有机酸浓度达到高值,导致铝硅酸盐及碳酸盐类矿物的溶解。斜长石的广泛溶解是本区富含自生高岭石、次生孔隙发育的主要原因。孔隙的改善程度与控制矿物溶解后离子迁移能力的原始岩石物性等因素紧密相关。

关键词: 连续埋藏, 有机酸, 反应途径, 有机一无机相互作用, 次生孔隙

Abstract:

The diagenetic reactions of Jurassic-Triassic successively deposited sandstone-mudstonesystem in North Tarim Basin were mainly controlled by temperature intervals. The concentration of organic acid in oilfield water reached the peak value when temperature was 90135C, and this resulted in the dissolution of aluminosilicate and carbonate minerals. Extensive dissolution of plagioclase is the main cause of abundant authigenic kaolinate and highsecondary porosity. The improvement of porosity was closely related to the physical properties of original reservoir.