公开(公告)号：US10815777B2

公开(公告)日：2020-10-27

申请号：US16086662

申请日：2017-03-14

Applicant: BP Exploration Operating Company Limited

Inventor： Ian Ralph Collins ,  John William Couves ,  Michael Graham Hodges ,  Christian Schack Pedersen ,  Peter Anthony Salino ,  Christianne Clare Wicking

IPC: E21B49/08 ,  E21B43/20 ,  G01N33/28 ,  C09K8/58

Abstract: A method for detecting incremental oil production from an oil-bearing reservoir includes taking a baseline sample of the oil and analyzing the baseline sample of oil to establish a baseline compositional signature for the oxygen-containing organic compounds in the oil. In addition, the method includes commencing a low salinity waterflood by injecting a low salinity water into the reservoir from an injection well. Further, the method includes recovering oil from a production well. Still further, the method includes taking post-flood samples of the oil produced from the production well over time. The method also includes analyzing the post-flood samples of oil to establish post-flood compositional signatures for the oxygen-containing organic compounds in the oil. Moreover, the method includes identifying a difference between one or more of the post-flood compositional signatures and the baseline compositional signature that is characteristic of incremental oil released by the low salinity waterflood.

公开(公告)号：US20190100996A1

公开(公告)日：2019-04-04

申请号：US16086662

申请日：2017-03-14

Applicant: BP Exploration Operating Company Limited

Inventor： Ian Ralph Collins ,  John William Couves ,  Michael Graham Hodges ,  Christian Schack Pedersen ,  Peter Anthony Salino ,  Christianne Clare Wicking

IPC: E21B49/08 ,  G01N33/28 ,  E21B43/20

Abstract: A method for detecting incremental oil production from an oil-bearing reservoir includes taking a baseline sample of the oil and analyzing the baseline sample of oil to establish a baseline compositional signature for the oxygen-containing organic compounds in the oil. In addition, the method includes commencing a low salinity waterflood by injecting a low salinity water into the reservoir from an injection well. Further, the method includes recovering oil from a production well. Still further, the method includes taking post-flood samples of the oil produced from the production well over time. The method also includes analyzing the post-flood samples of oil to establish post-flood compositional signatures for the oxygen-containing organic compounds in the oil. Moreover, the method includes identifying a difference between one or more of the post-flood compositional signatures and the baseline compositional signature that is characteristic of incremental oil released by the low salinity waterflood.