Predicting S-wave velocity based on three well logging curves

Wang, Lingqian (China University of Petroleum–Beijing) | Zhou, Hui (China University of Petroleum–Beijing) | Yu, Bo (China University of Petroleum–Beijing) | Chen, Xinyu (China University of Petroleum–Beijing)

OnePetro 

Prediction of shear-wave velocity plays an important role in some seismic applications, such as amplitude variation with offset (AVO) analysis, and the construction of lithofacies recognition library. This paper presents a method for predicting S-wave velocity based on three logging curves: interval transit time, density and gamma. There are two main problems: accurate establishment of reasonable rock physical models and efficient solution of an objective function. Three logging curves can be used to calculate porosity, shale volume and to determine the lithology. We can get the compaction constant through solving the P-wave objective function. An advantage of this method is that there are few empirical parameters, such as clay content, mineral modulus and pore aspect ratio, to be chosen. On the other hand, it can accurately predict S-wave velocity by building a reasonable rock physical models with practical well logs rather than petrophysical experiment in the laboratory.

Presentation Date: Tuesday, September 26, 2017

Start Time: 3:30 PM

Location: Exhibit Hall C/D

Presentation Type: POSTER