Patent Number: 6,167,964

Title: Method of determining in-situ stresses

Abstract: A method is provided for determining an in-situ stress of an earth formation subjected to first, second and a third in-situ stresses, wherein a borehole has been drilled into the formation, the borehole containing a borehole fluid inducing a selected pressure to the borehole wall so that in a region of the formation the first in-situ stress is replaced by another stress depending on the selected pressure induced to the borehole wall.

Inventors: Kenter; Cornelis Jan (Rijswijk, NL), Van Munster; Johannes Gerardus (Rijswijk, NL), Pestman; Barend Jan (Rijswijk, NL)

Assignee: Shell Oil Company

International Classification: E21B 49/00 (20060101); E21B 49/02 (20060101); E21B 049/02 ()

Expiration Date: 01/02/2018