Unconventional/complex reservoirs

Pulsed-Neutron Logging-While-Drilling Tool Enables Direct Carbon Measurement

This paper describes a novel 6.75-in. logging-while-drilling geochemical tool developed for accurate lithology, mineralogy, well-placement, and geosteering applications in complex reservoirs.

Fig. 1—Lithology ternary diagram.
Fig. 1—Lithology ternary diagram.
Source: SPE 228060.

A novel 6.75-in. logging-while-drilling (LWD) geochemical tool has been developed for accurate lithology, mineralogy, well-placement, and geosteering applications in complex reservoirs. This LWD tool uses capture and inelastic gamma rays induced by a pulsed-neutron generator to provide real-time formation elemental and mineralogical concentrations and sigma and direct carbon measurements.

Tool Description

General Design. The LWD tool is available in a 6.75-in. nominal size.

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