دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Refers to eyeholes formed by mud desander in drilling operation.

the unobstructed opening size (diameter, length and width, or other shape factor).

n: an estimate of costs prepared by a lease operator and sent to each non operator with a working interest for approval before work is under taken. Normally used in connection with well-drilling operations.

n: A document signed by management that authorizes funds to be spent against an approved budget.

n: in drilling operations, gas that returns to the surface with the drilling mud in measurable quantities but does not cause a kick. Increases in background gas may indicate that the well is about to kick or has kicked.

n: a report that lists each bit used during a drilling operation, giving the type, the footage it drilled. the formation it penetrated, its condition, and so on.

a record of bit run, depth, rate of penetration, etc., in a wellbore.

n: a drilling operation in which the drilling fluid is not returned to the surface;rather. it flows into an under- ground formation. Sometimes blind-drilling techniques are resorted to when lost circulation occurs.

n: in drilling operations, an insert that fits into the opening of a master bushing and accommodates the slips.

n: See insert.

a section of the wellhead or of a tool what allows slips to be inserted to hold pipe or equipment.

n: drilling operations in which plain water (usually salt water) is used as the circulating fluid.

a removable sleeve that covers the internals of the subsea tree during drilling operations.

v: to treat drilling mud with additives to give it certain properties. Sometimes the term applies to water used in boilers, drilling operations, and so on. To condition and circulate mud is to ensure that additives are distributed evenly throughout a system by circulating the mud while it is being conditioned.

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.