Oil & Gas Geology ›› 2010, Vol. 31 ›› Issue (1): 43-48.doi: 10.11743/ogg20100107

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Identification of low-amplitude structural traps in Luntai area, the Tarim Basin and its application

Han Qiang, Yang Zichuan, Zhao Yuan   

  1. Petroleum Exploration & Production Research Institute, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China
  • Received:2009-09-16 Online:2010-02-25 Published:2012-01-16

Abstract:

This paper aims to identify low-amplitude structural traps in the Luntai area in the Tarim Basin.Regional structures in the study area are accurately located by means of precise 3D seismic interpretation and technologies such as fine calibration for horizon,automatic tracing,coherence attribute and variable velocity mapping.Analyses of geophysical response characteristics of logging and seismic data of the known oil and gas pools reveal that the velocity of reservoir sandstone is low while the velocity of mudstone cap rock is high,and the hydrocarbon-bearing zones have features of low frequency but high amplitude.Further,attribute analysis and hydrocarbon detection technologies are successfully used to analyze and predict the reservoir-seal combination and hydrocarbon potential of the identified structures.

Key words: 3D seismic, low-amplitude structure, hydrocarbon detection, Luntai area, Tarim Basin

CLC Number: