公开(公告)号：US11906503B2

公开(公告)日：2024-02-20

申请号：US17304974

申请日：2021-06-29

Applicant: ExxonMobil Technology and Engineering Company

Inventor： David T. Wang ,  Muhammad Asif ,  Michael J. Formolo

IPC: G01N33/28 ,  G01N21/39 ,  B01D15/08 ,  G01N27/62

CPC classification number: G01N33/2835 ,  B01D15/08 ,  G01N21/39 ,  G01N27/62

Abstract: Methods for identifying hydrocarbon contamination sources may include fingerprinting hydrocarbons using isotopocule analyses for BTEX compounds. For example, methods for identifying hydrocarbon contamination sources may comprise: extracting BTEX compounds from a sample; measuring the isotopocule composition of the BTEX compounds; and determining a characteristic of the sample based on the isotopocule composition. Such characteristics may include, but are not limited to, the characteristic of the sample comprises one or more selected from the group consisting of: a source of the sample, a condition at which the sample formed or was last equilibrated, a migration time from a source to a sample location, weathering of the sample, and degree to which the sample is anthropogenic and naturally-occurring.

公开(公告)号：US20240337643A1

公开(公告)日：2024-10-10

申请号：US18294642

申请日：2022-07-25

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Chun Zhu ,  Muhammad Asif ,  Zhibin Wei

IPC: G01N33/28 ,  E21B43/00 ,  E21B44/00

CPC classification number: G01N33/2823 ,  E21B43/00 ,  E21B44/00

Abstract: Age differentiation of hydrocarbon samples may be achieved using a chemical fossil assemblage approach. For example, a method may comprise: determining a source facies for a hydrocarbon sample; inputting the source facies into a chemical fossil assemblage model; determining, using the chemical fossil assemblage model, one or more candidate chemical fossil assemblages and corresponding age biomarkers for the hydrocarbon sample based on the source facies; measuring a concentration or a related value of corresponding age biomarkers in the hydrocarbon sample to yield an age biomarker fingerprint; inputting the age biomarker fingerprint into a chemical fossil assemblage model; comparing the age biomarker fingerprint to the one or more candidate chemical fossil assemblages using the chemical fossil assemblage model; and estimating an age of the hydrocarbon sample based on the comparison.