APPARATUS AND METHOD FOR PREDICTING VERTICAL STRESS FIELDS

摘要

A method of estimating stress in an earth formation is disclosed. The method includes: dividing a domain including at least a portion of an earth formation into a first region and a second region; estimating a first vertical stress in the first region and representing the first vertical stress as at least one point load; estimating a second vertical stress in the second region by a point load based method using the first vertical stress; and estimating at least one horizontal stress based on the second vertical stress.

主权项

1. A system for estimating stress in an earth formation, the system comprising:
a tool configured to at least one of generate and receive density information for the earth formation, the tool configured to perform: generating a domain including at least a portion of the earth formation based on sensor data for the formation; dividing the domain including at least the portion of the earth formation into a first region and a second region; estimating a first vertical stress in the first region and representing the first vertical stress as at least one point load; estimating a second vertical stress in the second region by a point load based method using the first vertical stress; and estimating at least one horizontal stress based on the second vertical stress.