TY - GEN

T1 - Fracture pressure prediction with improved Poisson's ratio estimation

AU - Kozlov, E.

AU - Garagash, I.

AU - Wang, J.

AU - Baransky, N.

AU - Dopkin, D.

AU - Ivanova, N.

AU - Lowrie, A.

PY - 2005

Y1 - 2005

N2 - The commonly used model for fracture pressure determination makes use of the ratio of the horizontal effective stress and the vertical stress as a function of the Poisson's ratio, the latter being inferred from seismic velocities. It has been documented that fracture pressure predicted in such a way deviates systematically from what is derived from LOT data, so the predictions provide an unreliable basis for well planning. In this paper, we analyze the reasons for the deviations and present a new methodology to predict Poisson's ratio and fracture pressure using seismic, well log and laboratory data. Examples confirm the superiority of the new methodology.

AB - The commonly used model for fracture pressure determination makes use of the ratio of the horizontal effective stress and the vertical stress as a function of the Poisson's ratio, the latter being inferred from seismic velocities. It has been documented that fracture pressure predicted in such a way deviates systematically from what is derived from LOT data, so the predictions provide an unreliable basis for well planning. In this paper, we analyze the reasons for the deviations and present a new methodology to predict Poisson's ratio and fracture pressure using seismic, well log and laboratory data. Examples confirm the superiority of the new methodology.

UR - http://www.scopus.com/inward/record.url?scp=84901643035&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84901643035

SN - 9781555632526

T3 - Proceedings of the Annual Offshore Technology Conference

SP - 457

EP - 463

BT - Offshore Technology Conference 2005, OTC 2005

PB - Offshore Technology Conference

T2 - Offshore Technology Conference 2005, OTC 2005

Y2 - 2 May 2005 through 5 May 2005

ER -