drill string


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drill string

or

drill pipe

n
(Mining & Quarrying) (in the oil industry) a pipe made of lengths of steel tubing that is attached to the drilling tool and rotates during drilling to form a bore
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References in periodicals archive ?
DET CRC CEO Richard Hillis said, "It is a revelation to watch rapid drilling with no rotation, no one near the drill string, no rod handling and no fluids on the surface.
According to the company, the recent patented drill string oscillation tool is composed of two main parts, a hydraulic channeling chamber (HCC) and a rhythmic pulsation chamber (RPC).
Care was taken to select double white band S-135 drill string with a large diameter to accommodate the armored fiber optic cable to be installed.
He said the control allows for adjustments in the formation as needed, so there isn't damage to the drill or drill string.
This innovation replaces rotation of the entire drill string with independent rotation of the drill head, using a downhole turbine-driven mechanism.
Also, during the drilling operation, it is often necessary to remove the drill string in order to change the drill bit.
National Oilwell Varco is a worldwide leader in providing major mechanical components for land and offshore drilling rigs, complete land drilling and well servicing rigs, tubular inspection and internal tubular coatings, drill string equipment, extensive lifting and handling equipment, and a broad offering of downhole drilling motors, bits and tools.
Logging of the well bore provides drillers with details of the location and position of the drill string, and detailed formation evaluation.
H&F Drilling Supplies, which specialises in casing and piling applications and supplies all components in the drill string, is one of Atlas Copco's distributors in the country.
National Oilwell Varco (NOV) and Schlumberger have created a joint venture to provide high-speed drill string telemetry systems to improve the efficiency and safety of oil and gas operations.
These vessels can drill up to 7,000 metres through rock while deployed in waters up to 3,000 metres deep, with a maximum drill string length of 10,000 metres.