公开(公告)号：US11112527B2

公开(公告)日：2021-09-07

申请号：US16095432

申请日：2017-05-15

Applicant: PetroChina Company Limited

Inventor： Ning Li ,  Kewen Wang ,  Yujiang Shi ,  Hongliang Wu ,  Taiping Zhao ,  Qingfu Feng ,  Zhou Feng ,  Haitao Zhang ,  Baoding Zhu ,  Xiaoming Yang

IPC: G01V3/38 ,  G01N33/24 ,  G01V99/00 ,  E21B49/00 ,  G01V3/18

Abstract: The present application provides a method and a system for determining a saturation exponent of a heterogeneous carbonate reservoir. The method comprises: dividing a target reservoir into at least two reservoir types in accordance with a predetermined rule; obtaining a correspondence relationship between a saturation exponent and a bound water saturation in each of the reservoir types; determining the reservoir type to which a to-be-measured core belongs in accordance with the predetermined rule; obtaining a bound water saturation of the to-be-measured core; and calculating the saturation exponent of the to-be-measured core according to the bound water saturation of the to-be-measured core on the basis of the correspondence relationship of the reservoir type to which the to-be-measured core belongs.