دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (MIT) a test required prior to initial injection and once every five years thereafter (at a minimum) for certain types of injection wells under SDWA. These tests evaluate the operational integrity of the well so that underground sources of drinking water will not be endangered. EPA defines mechanical integrity as no significant leak in the casing, tubing, and packer and no significant fluid movement into a USDW through vertical channels adjacent to the injection well bore.

A regular pressure test on an injection well to assure the integrity of the isolation seal.

n: a percussion tool operated mechanically to give an upward thrust to a fish by the sudden release of a tripping device inside the tool. If the fish can be freed by an upward blow, the mechanical jar can be very effective. Also called a hydraulic jar.

n: A type of jar that incorporates a mechanical trip or firing mechanism that activates only when the necessary tension or compression has been applied to the running string. In slickline operations, the term is often used to describe any jar that does not c

n: formed by driving and distribution, the dirving type contains of cardan shaft, reducer casing, clutch coupling, vee belt, forward drive box, revert drive box , drive chain and shaft.

n: a statistical measure of the midmost value, such that half the values in a set are greater and half are less than the median.

n: CMC strains that its degree of polymerization is medium, and made of wood pulp.

n: a title free from material defects or grave doubts and reasonably free from litigation, which can be sold or successfully defended in court;a court of equity will compel the vendor to accept such a title as sufficient. Also called marketable title or good title.

mercury is injected at step-wise increasing pressures where large pore fill first, followed by smaller pores at successfully higher pressures. Volumes injected at different pressures indicate the pore size distribution.

n: a device used to measure bulk volume of core samples by measuring the amount of mercury displaced by a core sample.

n: a high-intensity discharge lamp in which the gas is vaporised mercury. Starts with the arcing of argon gas between the main electrodes and gives off a blue-white light.