公开(公告)号：US20220091090A1

公开(公告)日：2022-03-24

申请号：US17479619

申请日：2021-09-20

Applicant: Baker Hughes Oilfield Operations LLC

Inventor： Bastian Baecker ,  Erik Lehne ,  Svenja Erdmann ,  Salar Azizi

IPC: G01N33/28 ,  E21B49/08 ,  E21B21/08

Abstract: A method for determining a hydrocarbon concentration from drilling fluid includes pumping the drilling fluid into a wellbore and circulating a sample of the drilling fluid uphole from the wellbore so that δ13C isotopic signatures can be determined for one or more hydrocarbon components and for methane in the sample where the methane includes natural methane originating from the earth formation and artificially-produced methane caused by drill bit metamorphism (DBM). A processor is adapted to determine the concentration of the natural methane in the sample based in part on the δ13C isotopic signatures which may be performed during the drilling of the wellbore.

公开(公告)号：US11867682B2

公开(公告)日：2024-01-09

申请号：US17479619

申请日：2021-09-20

Applicant: Baker Hughes Oilfield Operations LLC

Inventor： Bastian Baecker ,  Erik Lehne ,  Svenja Erdmann ,  Salar Azizi

IPC: E21B21/08 ,  E21B49/08 ,  G01N33/28

CPC classification number: G01N33/2823 ,  E21B21/08 ,  E21B49/088 ,  E21B49/0875

Abstract: A method for determining a hydrocarbon concentration from drilling fluid includes pumping the drilling fluid into a wellbore and circulating a sample of the drilling fluid uphole from the wellbore so that δ13C isotopic signatures can be determined for one or more hydrocarbon components and for methane in the sample where the methane includes natural methane originating from the earth formation and artificially-produced methane caused by drill bit metamorphism (DBM). A processor is adapted to determine the concentration of the natural methane in the sample based in part on the δ13C isotopic signatures which may be performed during the drilling of the wellbore.