دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a short length of pipe (a nipple) installed on top of the blowout preventer. The top end of the nipple is flared, or belled, to guide drill tools into the hole and usually has side connections for the fill line and mud return line.

a funnel shaped pipe at the top of the casing that guides tool string entry and may have a side port for fluid pumping.

n pi: the equipment included in the drilling fluid circulating system of a rotary rig. Basically, the components consist of the mud pump, the rotary hose, the swivel, the drill stem, the bit, and the mud return line.

n: Mainly including mud pump, revolving drilling hose, swivel, drill string, bit and mud return line.

n: a trench or channel made in the earth, usually to bury pipeline, cable, and so on. On a drilling rig, the mud flow channel from the conductor-pipe outlet is often called a ditch. See mud return line. v: to excavate a trench in which to lay pipe or cable. Ditching equipment and methods for pipe laying vary according to terrain and weather.

n: any relatively sticky formation (such as clay) encountered in drilling.

n: a naturally occurring clay that contaminates the mud as the hole is being drilled.the clay hydrates rapidly to form a thick plug that can not pass through a marine riser or mud return line.

sticky, reactive shale formation.

n: 1. in offshore operations. the seafloor.2. a mud return line.

n: a trough or pipe that is placed between the surface connections at the wellbore and the shale shaker and through which drilling mud flows on its return to the surface from the hole. Also called flow line.

n: a though or pipe through which the mud being circulate up the annulus is transferred from the top of wellbore to the shale shakers (q.v.).sometimes calledflowline.

n: a device that continually measures and may record the flow rate of mud returning from the annulus and flowing out of the mud return line. If the mud does not flow at a fairly constant rate, a kick or lost circulation may have occurred.

n: 1. a receiving tank situated at the end of the mud return line. The flow of mud comes into the bottom of the device and travels over baffles to control mud flow over the shale shaker. 2. a metal box under a truck bed that holds pipeline repair tools.

n: it stands on the end of mud return tube,after fluid enter this tank and through baffle, then the mud flows to the shaker.


an enlarged section of a tank for settling solids.