دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Affiliated to a kind of parbighite that can combine with alkylene, usually used as diluent and calcium remover which can resist certain temperature.

n: I. the process of breaking down organic wastes with microbes. Bacteria that are naturally present in the environment use microbial enzymes to break down die materials into a soluble form that passes through the cell walls of the bacteria. The bacteria metabolise d1e material and convert it into components d1at are more readily assimilated in d1e environment, such as water or carbon dioxide (i.e., a gardeners compost pile). 2. the creation of engineered and managed conditions to boost natural bioremediation processes. Nutrients are added to stimulate the bacteria naturally present in the waste. Oxygen ari1 pH levels are adjusted for maximum effectiveness, and, if conditions are right, the bacteria grow in large numbers and break down the hydrocarbons much more rapidly than with natural bioremediation. In cases in which the necessary bacteria are not already present in the waste, suppliers can provide diem along with die appropriate nutrients.

n: a knot used primarily in lifting heavy equipment with the catline, since it can be readily tied and untied regardless of the weight of the load on it.

n: kinking when lifting heavy object with cathead line.

v: to lower the drill stem rapidly a few feet into the hole and then stop it suddenly with the drawworks brake. A surge of pressure in the mud in the drill stem and annular space results and may help to flush out debris accumulated in or on die pipe. The pressure surge may break down a formation, however, causing lost circulation, or may damage the bit if it is near the bottom.

v: Landing the drill string speedily and then braking. This operation can produce stiring pressure to clean the cutting laying up in the drill pipe. But this pressure may lead to formation fracturing or circulation loss.

n: finely divided particles of ultramicroscopic size suspended in a liquid.

n: The system that superfine particle suspend in the liquid media steadily and homogeneously. For example, cement slurry.

a dispersion of fine particles, held by charge or other force in a stable suspension.

n: in an oil and gas lease, a clause designed to keep drilling operations going steadily after the primary term has expired. In some clauses, designated intervals between completion of one well and commencement of the drilling of another may require the operator to develop the leased land up to its allowable density.

n: the device used to remove unwanted gas from a liquid, especially from drilling fluid.

n: A device that removes entrained gas from a drilling fluid, especially the very small bubbles that do not float readily in viscous drilling fluid.

any device that helps remove gas from circulated fluid.

n: The phenomenon that dilatability clay mineral (for example, montmorillonite) transform into non-dilatability clay mineral (for example, goeschwitzite) under the condition of temperature, pressure and chemistry.

dual induction log.