دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a long, cylindrical container fitted with a valve at its lower end, used to remove water, sand, mud, drilling cuttings, or oil from a well in cable-tool drilling.

n: A long, cylindrical container, fitted with a valve at its lower end, used to remove water, sand, mud, oil, or junk and debris from a well.

a hollow tube with a trap door or ball seat, run on wireline, which can be used to spot or remove solid material from a well bore.

n: 1. a member of a cable-tool drilling crew who repairs bits. 2. a machine used to repair, sharpen, and gauge bits.

n: a drilling method in which the hole is drilled by the rigs equipment dropping a sharply pointed and heavily weighted bit on bottom. The bit and weight are attached to a cable, and the rigs equipment repeatedly drops the cable to drill the hole.

n: the theory that the earths landforms assumed their present configuration in a brief episode at the beginning of geologic history-possibly in a single great catastrophic event-and have remained relatively unchanged since that time. Compare uniformtarianism. catcher n: a device fitted into a junk basket that retains the junk picked up by the basket catch samples v: to obtain cuttings for geological information as formations are penetrated by the bit The samples are obtained from drilling fluid as it emerges from the wellbore or, in cable-tool drilling, from the bailer. Cuttings are carefully washed until they are free of foreign matter, dried, and labelled to indicate the depth at which they were obtained.

n: a drilling tool that, when placed in the drill stem just above a roller cone bit, delivers high-frequency percussion blows to the rotating bit. Hammer drilling combines the basic features of rotary and cable-tool drilling (i.e.. bit rotation and percussion).

n: a kind of satellite drilling tool which is installed in bottom of the pipe and the top of cone bit and which can create high frequency impact effect

n: 1. cable-tool drilling. 2. rotary drilling in which a special tool called a hammer drill is used in combination with a roller cone bit.

n: 1 see cable tool drilling. 2. during the rotating drilling, connected special high frequent hammer assembly with the cone bit, the breaking rock caused by rotated and shocked jointly.

n: 1. the part of the surface equipment of a standard cable-tool drilling rig that supports the walking beam. 2. the member of a rod pumping unit that supports the walking beam.

n: a special bit or mill run on a cable-tool drilling line, a well servicing rig, or the sandline of a rotary drilling rig to mill out tools or drill out downhole debris.

n: a portable cable-tool drilling rig, sometimes mounted on a buck or trailer.

n: Churn type light percussion drill,usually used to drill post well .