دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a type of valve that changes the direction of fluid flow from the intended path to an alternate route.

n: a fractional interest in minerals that, when conveyed, gives the new owner a 100% interest in the designated fraction of the described tract. For example, a one-quarter dividabl interest in an 80-acre (32- hectare) tract results in a 100% interest in 20 specific, describable acres (8 hectares) out of that tract. Compare undivided interest.

n: a statement of opinion by a title examiner on the state of the title to land, mineral, royalty, or working interests in a producing tract of land. This opinion, usually in letter form, is the basis of payment to all affected owners and must recite all the owners interests. Com- pare drill site opinion. title opinion.

n: 1. an abrupt change in direction in the wellbore, frequently resulting in the formation of a keyseat. 2. a sharp bend permanently put in an object such as a pipe, wire rope. or a wire rope sling.

n: The elbow caused by a sharp change of direction in the wellbore.

n: a portable container used to melt coal tar enamel and maintain it at the temperature required by a pipe-coating operation.

n: refer tosimultaneous drilling

n: a kind of casing accessories with the centralizer blade being checker and tilting in the same direction

n: a common reciprocal pump with two hydraulic cylinder ,the pump will complete two operations of fluid-incoming and fluid-outcoming when the piston does an alternating motion

n: a rotational bumper for drilling or fishing which can smack up and down alternately