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Development of Overpressure in the Tertiary Damintun Depression, liaohe basin, Northern China

Acta Geologica Sinica(English Edition) 2003年第3期77卷 402-412页

作者： YE Jiaren, HAO Fang and CHEN JianyuFaculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074 E-mail: jrye@*** Ren Xifei and Zhu Xiling China Univ Geosci Fac Earth Resources Wuhan 430074 Hubei Peoples R China

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

关键词： overpressure seismic data pressure evolution fluid potential Damintun depression liaohe basin China

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POOL-FORMING KINETIC SYSTEMS AND PROCESSES IN TOUSHEN AREA, liaohe basin

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Scientia Geologica Sinica 2000年第3期 327-332页

作者： Sun Lichun, Yuan Qi and Wang Yuncheng (State key laboratory of reservoir geology and exploitation, Chengdu university of technology, Chengdu, 610059)

The difference between the pool-forming kinetic system (PKS) and the petroleum system lies in that the studying contents of the kinetics system includes the studies on the relations of the key conditions with the essential processes for a pool forming, and the analysis about the oil & gas accumulation principle and the spatial-temporal distribution of hydrocarbons. There are three kinds of pool-forming kinetics systems in Toushen area. In this paper, a study on spatial-temporal matching of these key conditions and essential processes is carried out, and the law of oil & gas accumulation is specified.

关键词： POOL-FORMING KINETIC SYSTEMS AND PROCESSES IN TOUSHEN AREA liaohe basin

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