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

Claim 0:
1. A computer-implemented method, comprising:
determining, using petrophysical evaluation results, total clay, effective porosity (PHIE) values and gas volume for a 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 and gas volume variation, 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 drilling locations and target zones, and assist 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.