US 12,111,436 B2Granted

Method and system for determining a location of hydrocarbon reservoirs

AssigneeAbu Dhabi National Oil Company

InventorsAbdelwahab Noufal, Khalid Obaid

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Abstract

The present invention relates to a method for determining a location of hydrocarbon reservoirs using a mechanical properties model of a subsurface geological area. The method comprises the steps of: creating a plurality of presumed seismic sections at the time of deposition based on a seismic interpretation of the subsurface geological area and influences of tectonic time data and tectonic pressure data; creating a mechanical properties model of the subsurface geological area based on the plurality of presumed seismic sections at the time of deposition and the influences of tectonic time data and tectonic pressure data.

Claims7

Dependent claims

A method for determining a location of hydrocarbon reservoirs using a created mechanical properties model of a subsurface geological area, the method comprising the following steps executed by a computer:

receiving gamma rays data, sonic data or measured density data measured in well logs in the subsurface geological area;
deriving tectonic time data and tectonic pressure data using a seismic interpretation of the subsurface geological area and the data from well log measurements;
generating a plurality of presumed seismic sections at time of deposition based on the seismic interpretation of the subsurface geological area and of the derived tectonic time data and tectonic pressure data;
detecting boundaries in the plurality of presumed seismic sections at the time of deposition using the received gamma rays data, sonic data or measured density data;
creating a mechanical properties model of the subsurface geological area based on the plurality of presumed seismic sections at the time of deposition and the influences of tectonic time data and tectonic pressure data;
and the detected boundaries in the plurality of presumed seismic sections at the time of deposition;
analyzing the mechanical properties model of the subsurface geological area to determine presence and position of progradational surfaces in the subsurface geological area;
and
determining, by a determining device, the location of the hydrocarbon reservoir in the subsurface geological area using the position of the progradational surfaces.

6 more elements

A system configured to determine a location of one or more of one or more hydrocarbon reservoirs in a subsurface geological area, wherein the system comprises:

an apparatus configurated to create a mechanical properties model of a subsurface geological area, the apparatus comprising
means configured to receive gamma rays data, sonic data or measured density data measured in well logs in the subsurface geological area;
a first deriving device configured to derive tectonic time data from geometric features within a seismic interpretation and the data from well log measurements;
a second deriving device configured to derive tectonic pressure data from geometric features within the seismic interpretation and the data from well log measurements;
a first creating device which is configured to create a plurality of presumed seismic sections at the time of deposition based on the seismic interpretation of the subsurface geological area and the derived tectonic time data and tectonic pressure data;
and
a detecting device configured to detect boundaries in the plurality of presumed seismic sections at the time of deposition using the received gamma rays data, sonic data or measured density data;
and
a second creating device which is configured to create a mechanical properties model of the subsurface geological area based on the plurality of presumed seismic sections at the time of deposition and the derived tectonic time data and tectonic pressure data, and the detected boundaries in the plurality of presumed seismic sections at the time of deposition;
the system further comprising:
a determining device, configured to analyze the mechanical properties model of the subsurface geological area to determine presence and position of progradational surfaces in the subsurface geological area, and to determine the location of one or more of one or more hydrocarbon reservoirs in the subsurface geological area using the position of the progradational surfaces.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/644,948Filed 17 Dec 2021
Priority: EP 2021624221 Dec 2020
Published: US 2022/0196862 A123 Jun 2022
Granted: 8 Oct 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G01V 1/282
Processing seismic data, e.g. for interpretation or for event detection: application of seismic models, synthetic seismograms
G01V 1/301
Analysis: for determining seismic cross-sections or geostructures
G01V 1/306
Analysis: for determining physical properties of the subsurface, e.g. impedance, porosity or attenuation profiles
G01V 2210/1234
Passive source, e.g. microseismics: hydrocarbon reservoir, e.g. spontaneous or induced fracturing

Family

US 2022/0196862 A1Pre-grant publication · published 23 Jun 2022
US 12,111,436 B2This patent

From the US filing history. Foreign family members aren’t listed.

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