دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The packer is connected at the suitable part of casing string and trapped in the well to adjust for payzone. There are two non-return valves and a pilot valve. Open the pilot valve when reach to the certain pump pressure in cementing. The cement slurry en

n: a flat-bottom mill shoe with a pilot hole bit

n: a flat-bottom mill shoe with pilot-hole pole

n: a kind hole opener which has cone bits with pilot hole

n: A graduated cup used to take samples and to crudely measure volumes of mud for testing at the rig. A mud cup is used primarily with the Marsh funnel to measure one quart of flow out of the funnel. It is also used as a container for performing simple pilot

a graduated cup used to sample mud and fill the Marsh funnel.

n: a hard-metal projection that is placed on the end of the pilot pin of a roller cone bit to absorb some of the wear created by outward thrusts as the bit rotates.

n: a rodlike or tubelike extension below a downhole tool. such as a mill. that serves to guide the tool into or over another downhole tool or fish.

a small scale test or trial used to assess the feasibility of a process to a reservoir or field.

n: a bit placed on a special device called a hole opener that serves to guide the device into an already existing hole that is to be opened (made larger in diameter). The pilot bit merely guides. or pilots. the cutters on the hole opener into the existing hole so that the hole-opening cutters can enlarge the hole to the desired size.

n: the complex bit that made up the bottom center of enlarging bit extends a small bit

n: in pipeline construction. the hole drilled as the first step of a directionally drilled river crossing. It establishes a pathway for the pipeline.

n: a small-diameter hole that is later opened up to the required diameter. Sometimes used in directional drilling to control wellbore deviation during kick-off.

a small (sometimes) diameter hole drilled through a pay zone to determine the pay top and bottom or various contacts, before the main well position is selected. May also use a pilot hole to better control influx rate.

n: a special mill that has a heavy tubular extension below it called a pilot or stinger. The pilot, smaller in diameter than the mill, is designed to go inside drill pipe or tubing that is lost in the hole. It guides the mill to the top of the pipe and centres it, thus preventing the mill from by-passing the pipe. Also called a piloted mill.

n: a kinds of special made milling tool.

a step-diameter mill that makes a pilot hole then enlarges it with the upper diameter.