دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a declaration or an avowal of any act or fact made by a signatory party to a document to a notary public or other public official authorised to take an acknowledgement to give it legal effect.

n: a document by which the master of a ship acknowledges having received in good order and condition (or the reverse) certain specified goods consigned by a particular shipper, and binds himself or herself to deliver them in similar condition, unless the perils of the sea, fire, or enemies prevent it, to the consignees of the shippers at the point of destination on their paying the stipulated freight.

n: see guide shoe. casing slip n: see spider.

n: A short section of steel filled with concrete and rounded at the bottom. This is installed on the bottom of the casing string to guide the casing past any ledges or irregularities in the borehole. Sometimes called a guide shoe.

a tapered guid shoe on the bottom of a casing string to assist in passing ledges and dog-legs in the wellbore.

n: a kind of joint with external thread on the lower end and the joint ledge located on the elevator , and used to lift the flush coupled casing

n: the increased outward-spreading load cused by the ledge surface of the elevator being abraded

n: a kind of downhole tool composed by axle joint,saver sub and centering device with ledges on both ends,used to steady the bit during drilling and easy to replace the centralizer after the wing panels of centralizer being abraded

n: a rule of interpretation holding that an instrument such as an oil and gas lease must be interpreted from within the four comers of the instrument. Interpretation is made without any aid from knowledge of the circumstances under which the instrument came into being;the instrument is constructed as a whole. without reference to anyone part more than another.

n: a training level achieved by any employee who has been HAZWOPER trained to assist and support a hazardous materials technician in making certain emergency action decisions. The duties of hazardous materials specialists parallel those of the technician, but require a more directed or specific knowledge of the various substances they may be called on to contain. The hazardous materials specialist also acts as the site liaison with federal, state, local, and other government authorities in regard to site activities.

n: (slang) the cupboard or desk in which the driller keeps the various records pertaining to a drilling operation.

n: a cupboard or desk in w2hich the driller keeps the various records pertaining to drilling operations.