Reservoir and completion quality assessment in unconventional (shale gas) wells without logs or core
AssigneeSchlumberger Technology Corporation
InventorsRidvan Akkurt, Romain Charles Andre Prioul, Andrew E. Pomerantz
Life of this patent
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Abstract
Embodiments herein relate to a method for recovering hydrocarbons from a formation including collecting and analyzing a formation sample, drilling operation data, and wellbore pressure measurement, estimating a reservoir and completion quality, and performing an oil field service in a region of the formation comprising the quality. In some embodiments, the formation sample is a solid collected from the drilling operation or includes cuttings or a core sample.
Claims22
A method for analyzing a subterranean formation, the method comprising:
- obtaining cuttings generated from drilling a wellbore that traverses the subterranean formation;
- performing a plurality of analyses on the cuttings, wherein the plurality of analyses comprises at least two of:
- (i) determining at least one of mineralogy, kerogen content, and kerogen maturity for the cuttings;
- (ii) determining at least one of surface area and volume of pores within the cuttings;
- (iii) determining porosity of the cuttings;
- and
- (iv) determining elastic properties for the cuttings;
- and
- determining at least one of reservoir quality and completion quality using data obtained from at least two of the analyses;
- designing an oil field service for the subterranean formation using at least one of the reservoir quality and the completion quality.
A method for analyzing a subterranean formation, the method comprising:
- (i) obtaining cuttings generated from drilling a wellbore that traverses the subterranean formation;
- (ii) determining at least one of mineralogy, kerogen content, and kerogen maturity for the cuttings;
- (iii) determining at least one of surface area and volume of pores within the cuttings;
- (iv) determining porosity of the cuttings;
- and
- (v) determining at least one of reservoir quality and completion quality using data obtained from processes (ii), (iii), and (iv);
- designing an oil field service for the subterranean formation using at least one of the reservoir quality and the completion quality.
A method for analyzing a subterranean formation, the method comprising:
- (i) obtaining cuttings generated from drilling a wellbore that traverses the subterranean formation;
- (ii) determining at least one of mineralogy, kerogen content, and kerogen maturity for the cuttings;
- wherein determining at least one of mineralogy, kerogen content, and kerogen maturity for the cuttings comprises performing at least one of a X-Ray Fluorescence measurement, a X-Ray Diffraction measurement, and a Fourier Transform Infrared Spectroscopy measurement;
- (iii) determining at least one of surface area and volume of pores within the cuttings;
- (iv) determining porosity of the cuttings;
- and
- (v) determining at least one of reservoir quality and completion quality using data obtained from processes (ii), (iii), and (iv).
Dependencies are inferred from the claim text.