دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the device designed for handling the problems of cuttings-carry over and cement in horizontal drilling and high angle deviated hole by British petrol research centre

n: deviation of the borehole at least 80. from vertical so that the borehole penetrates a productive formation in a manner parallel to the formation. A single horizontal hole can effectively drain a reservoir and eliminate the need for several vertical boreholes.

n: drilling when the departure of the wellbore from vertical exceeds about 80 degrees. Beause a horizontal well typically penetrates a greater length of the reservoir, it can offer significant improvement over a vertical well.

a well drilled in a manner to reach an angle of 90 degrees relative to a level plane at its departure point at the surface. In practice, the horizontal section of most horizontal wells vary several degrees.

n: drill pipe made from a metal alloy containing a large amount of titanium. Even though it is more expensive, titanium drill pipe is much stronger (has a higher tensile strength) than conventional steel pipe. Further, in horizontal drilling applications, titanium is almost twice as flexible as steel, which means that titanium pipe can be bent more than conventional pipe without being permanently deformed.