Fast prediction Channel sand body of Jurassic in Sichuan basin of China
Chaorong Wu, Wenshen Duan · International Geophysical Conference, Qingdao, China, 17-20 April 2017 · 2017
Summary The Jurassic channel sand body reservoir in Sichuan basin is the most important oil and gas reservoir, which is widely distributed in the Sichuan basin. The gas is not contain H2S, and the production in 2015 has exceeded 3 billion cubic meter. The channel sand body is characterized by the small thickness of the single layer, the small volume of the single sand body, and the rapid lateral change. How to identify the channel sand body quickly and accurately is the key to improve the success rate of drilling and reduce the risk of exploration and development investment. In this paper, through the analysis of the sedimentary characteristics and the characteristics of rock physics, especially the velocity and density of this type of reservoir, establish the geophysical response model, using advanced 3D visualization platform, formed a suit of channel sand body gas reservoir rapid prediction technology, which can “overall, automatic and fine” characteristic gas reservoir using seismic data, and provide an accurate prediction of reservoir maps for the exploration and development drilling. The practical application shows that the method has a good application effect, and has high popularization value in the widely distributed terrestrial strata in china.