Patent ID: 11873709
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 8:
9. A computer-implemented system, comprising:
one or more data sources of petrophysical evaluation results that have been determined and collected for a tight gas sandstone reservoir;
one or more graphical user interfaces (GUIs) for interacting with users and presenting information based on an analysis of the petrophysical evaluation results;
one or more processors; and
a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions for execution by the one or more processors, the programming instructions instructing the one or more processors to perform operations comprising:
determining, using the petrophysical evaluation results, total clay and effective porosity (PHIE) values for the tight gas sandstone reservoir;
characterizing regions of the tight gas sandstone reservoir, including performing diagenetic rock typing for the regions using the total clay and PHIE values, wherein the diagenetic rock typing reflects porosity, permeability, and clay content change;
determining sweet spots (SSPs) based on the diagenetic rock typing, gas volume variation, and rock frackability, wherein the SSPs identify well locations and target zones for horizontal drilling, and wherein an SSP is an area capable of producing gas after hydraulic fracking;
determining ranked SSPs by indexing and ranking the SSPs by category;
generating, using at least the ranked SSPs, an SSP index curve as a function of diagenetic rock type (DRT) and gas volume (UGAS) given by SSP=DRT3·UGAS, wherein the SSP index curve represents an SSP index relative to a depth;
determining optimized infill locations, target zones for well placements in the tight gas sandstone reservoir using the diagenetic rock typing and the ranked SSPs; and
placing wells in tight gas sandstone reservoirs based on the determined optimized infill drilling locations and the target zones.