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 ...

RC Crawford woke up one day with an idea about how to make drilling for water cheaper in poor countries. His dream involved designing a drill that uses a technique called reverse circulation. The ...