Accurate prediction of bottomhole circulating temperature is important during drilling and completion of oil and gas wells and critical for properly designed cement slurries. Downhole temperature is ...

A slide and compound drilling model calculates build-up rate (BUR) of a single bent-angle motor assembly using a physical model and genetic-algorithm back propagation (GA-BP) regression analysis. A ...

"A vertical well is a traditional drilling method where a hole is drilled straight down from surface to access underground ...

Many types and sizes of drilling machines are used in manufacturing. They range in size from a simple bench mounted sensitive drill press to the large multiple-spindle machines able to drive many ...

Two state lawmakers unveiled a proposal Wednesday that would gradually bring to a halt drilling methods that have produced about a fourth of California’s petroleum production in its oil fields. The ...