Development of Overpressure in the Tertiary Damintun Depression, Liaohe Basin, Northern China
Development of Overpressure in the Tertiary Damintun Depression, Liaohe Basin, Northern China作者机构：China Univ Geosci Fac Earth Resources Wuhan 430074 Hubei Peoples R China
出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)
年 卷 期：2003年第77卷第3期
页 面：402-412页
核心收录：
学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程]
基 金：supported by the National Natural Science Foundation of China(Grant No.40172051) the Foundation for University Key Teachers by the Ministry of Education of China(No.GG-70-0491-1460) conducted as part of a study on petroleam system in the Damintun depression in 1997-1998 by the Department of Petroleum Geology,China University of Geosciences,which was supported by a grant from the Bureau of Liaohe Petroleam Exploration,CNPC
主 题：overpressure seismic data pressure evolution fluid potential Damintun depression Liaohe basin China
摘 要：The Damintun depression is one of the four depressions in the Liaohe basin in northern China, and is a rift basin developed in the Paleogene. This paper discusses in detail the characteristics of pressure and fluid potential of the Damintun depression based on a synthesis of the data from boreholes, well tests and seismic surveys. Data from sonic logs, well tests and seismic velocity measurements are used to study the pressure characteristics of the areas. From the sonic log data, shales can be characterized as normally pressured, slightly overpressured or highly overpressured; from the well test data, the pressure-depth gradient in oil-producing intervals implies hydrostatic pressure in general. Most seismic profiles in the Damintun depression are of sufficiently high quality for seismic velocities to be measured. The fluid pressures, excess pressures and pressure coefficients in 47 representative seismic profiles are predicted using formula calculation methods, and further transformed to fluid potenti
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