دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (CDU) a drilling structure whose base is shaped like a truncated (cut off) cone. It is designed for drilling in offshore arctic waters, where moving ice can damage the structure. The cone shape helps deflect the ice around the base and keep it intact

n: a dome that is caused by an intrusion of rock salt into overlying sediments. A piercement salt dome is one that has been pushed up so that it penetrates the overlying sediments, leaving them truncated. The formations above the salt plug are usually arched so that they dip in all directions away from the center of the dome, thus frequently forming traps for petroleum accumulations.

n: an anticlinal structure caused by an intrusion of rock salt into overlying sediments.this structure is often associated with traps for petroleum accumlations.

a usually large movement or intrusion of salt that gradually flows through the rock. Can create reservoir traps and can create casing collapse problems.

v: 1. to cut the top or end from. 2. to terminate abruptly.

n: a very hard, and relatively small, cylinder made of tungsten carbide bonded with nickel or cobalt. One end of the insert is rounded or tapered;the other end is truncated (cut oft) and inserted into a bit cone. The round or tapered end contacts the formation and drills it. Several inserts make up the cutters on a tungsten carbide insert bit.