Although commercial applications of composite coiled-tubing systems for drilling and well construction are limited, the work performed in test wells has yielded interesting results. Although ...

Well logging is the practice of recording and analyzing various kinds of data about the rock formations around a borehole during or after drilling. Also called borehole logging, this activity aims to ...

A proposed technique determines the hydrocarbon recovery factor and mobility from resistivity logs. This technique provides the petrophysicist with the following benefits: In the early stage of a well ...

LWD acquires formation evaluation and wellbore data in real time while the bit is cutting rock. Sensors housed in drill collars measure gamma ray, resistivity, density, neutron porosity, sonic, NMR, ...