Phil Holbrook - Houston TX Homer A. Robertson - Woodlands TX Michael L. Hauck - Houston TX
Assignee:
Baroid Technology, Inc. - Houston TX
International Classification:
E21B 4900
US Classification:
73152
Abstract:
The porosity-effective stress relationship, which is a fuction of lithology, is used to calculate total overburden stress, vertical effective stress, horizontal effective stress and pore pressure using well log data. The log data can be either real time data derived from measurement-while-drilling equipment or open hole wireline logging equipment.