Well logging chronicles the depths, subsurface formations and events encountered while drilling. Well logs can include visual observations or be made by instruments lowered into the well during ...

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, ...

Based on “Improved Drilling Operations and Wired Drill Pipe and Along-String Measurements – Learning and Highlights from Multiple North Sea Deployments,” SPE/IADC-204029-MS, SPE/IADC International ...

Following repeated failure of bicenter drillbits to meet demanding requirements in a number of offshore East Malaysia wells, Royal Dutch/Shell Group's Shell Malaysia Ltd. drilled six wells with an ...