Shale gas reservoirs characterization using neural network

摘要

In this paper, a tentative of shale gas reservoirs characterization enhancement from well-logs data using neural network is established. The goal is to predict the Total Organic carbon (TOC) in boreholes where the TOC core rock or TOC well-log measurement does not exist. The Multilayer Perceptron (MLP) neural network with three layers is implanted. The MLP input layer is constituted with five neurons corresponding to the natural Gamma ray, Neutron porosity and sonic P and S wave slowness. The hidden layer is composed with nine neurons and the output layer is formed with one neuron corresponding to the TOC log. Application to two horizontal wells drilled in Barnett shale formation where the well A is used as a pilot and the well B is used for propagation clearly shows the efficiency of the neural network method to improve the shale gas reservoirs characterization. The established formalism plays a high important role in the shale gas plays economy and long term gas energy production.