SEDIMENTARY PATTERN OF PROTOTYPE BASIN IN THE DEPOSITION PERIOD OF LAIYANG FORMATION AND THE ADVANTAGEOUS AREAS FOR OIL AND GAS EXPLORATION OF JIAOLAI BASIN

作     者：WU Zhiping LI Ling LI Wei ZHOU Yaoqi 

作者机构：College of Earth''s Resources & Information Petroleum UniversityDongying Shandong 257061China College of Earth''s Resources & Information Petroleum UniversityDongying Shandong 257061China College of Earth''s Resources & Information Petroleum UniversityDongying Shandong 257061China College of Earth''s Resources & Information Petroleum UniversityDongying Shandong 257061China 

出 版 物：《Geotectonica et Metallogenia》 (大地构造与成矿学（英文版）)

年 卷 期：2004年第28卷第2期

页      面：142-156页

学科分类：081803[工学-地质工程] 0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：国家重点基础研究发展计划(973计划)(1999043304) 

主　　题：prototype basin advantageous area for oil exploration deposition period of Laiyang formation Jiaolai Basin 

摘      要：Laiyang formation of Jiaolai Basin is the target stratum for oil and gas exploration. By measuring several field sections, the authors find that Laiyang formation reveals the whole processes from development to death of the lake basin and its sedimentary facies differ in different structural locations. Analyses about sedimentary facies and paleocurrent orientations in association with researches about the positive tectonic units such as Dayetou horseback and Chaigou horst indicate that Laiyang sag is a relatively independent sedimentary unit that shows great water depth typical of deep lake or semideep lake and was controlled by Wulongcun fault during the deposition period of Laiyang formation. Its sediments mainly originated from Jiaobei uplift area and Dayetou horseback. Gaomi-Zhucheng sag was a fast-filled basin controlled by Wurong fault and Yishu fault zone, being high in the northeast and low in the northwest and characterized by the development of pluvial facies and fluvial facies in most areas, and with the development of lake facies being limited to local low-lying regions. Selection of advantageous hydrocarbon reservoir areas for exploration purpose mainly relies on the sedimentation pattern of prototype basin and conservation conditions. The central-west area of Laiyang sag covered by overlying Laiyang formation is the most advantageous exploration area.