دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (UIC) a program developed under SDWA to prevent injection well contamination of underground sources of drinking water. The UIC program divides injection wells into five classes (that range from common septic tanks to hazardous waste injection wells) and establishes specific requirements for construction, casing and cementing, plugging and abandonment, types of substances that can be injected, volume and pressures that can be injected, and mechanical integrity of the well.

a tool with downhole deployable arms and cutters that allow a larger hole to be drilled below a smaller opening.

n: A kind of bias or flexible bit that be used to enlarge the borehole of under casing.

when the travel of the rod string at the pump (bottom of the well),is less than the surface rod travel.

A corrosion deposit occurring under a scale or bacterial deposition and thus not treatable by corrosion inhibitiors that are not designed for the purpose.

enlarge an existing borehole by a special bit that opens to a diameter larger than running diameter by hydraulic or mechanical method, or by use of a bi-center bit.

n: The amount of pressure (or force per unit area) exerted on a formation exposed in a wellbore below the internal fluid pressure of that formation. If sufficient porosity and permeability exist, formation fluids enter the wellbore. The drilling rate typical

when the pressure exerted by the column of fluid in the wellbore is less than the pore pressure in the formation.

drilling with a pressure in the wellbore that is lower than the pressure in the formation.

IADC-UBO term. Performance enhancement only;no zones containing hydrocarbons.

IADC-UBO term. Well incapable of flow to surface.