Deepwater drilling riser and drill pipe anti-abrasion anti-attrition protection device

Abstract

The invention relates to a deepwater drilling riser and drill pipe anti-abrasion anti-attrition protection device. The device comprises a drill pipe abrasion protection device (1) and a riser abrasion protection device (8). The drill pipe abrasion protection device (1) comprises a drill pipe connection short pipe nipple (4), an outer ball (5), an upper pre-tightening outer ring (6) and a lower pre-tightening outer ring (7), and the outer ball (5) is installed in an arc groove in the middle of the outer wall of the drill pipe connection short pipe nipple (4). The riser abrasion protection device (8) comprises a riser connection short pipe nipple (11), an upper internal screwing screw cap (12), an upper ball fixing ring (13), an upper inner ball (14), a lower internal screwing screw cap (16), a lower ball fixing ring (17) and a lower inner ball (18). The inner balls are installed in semi-circular grooves formed by the internal screwing screw caps and the ball fixing rings. The deepwater drilling riser and drill pipe anti-abrasion anti-attrition protection device has the advantages of being simple in structure, novel in design and capable of solving the problem that a riser and a drill pipe are prone to direct contact and abrasion in existing deepwater drilling work.

Description

technical field [0001] The invention relates to the technical field of offshore oil and gas development equipment, in particular to an anti-friction protection device for deep-water drilling risers and drill pipes. Background technique [0002] The biggest difference between deepwater drilling and land drilling is that there is a special device between the drilling platform and the seabed, that is, the riser. The riser refers to the key equipment connecting the submarine blowout preventer and the offshore drilling platform. It is a connecting channel from the offshore drilling platform to the seabed. During drilling operations, the main function of the riser is to isolate seawater and form a circulation channel for drilling fluid , to establish channels for drilling tools to enter the formation, and to connect additional pipelines in series. It can be seen from this that once the riser has an accident, it will not be able to carry out normal deepwater drilling operations. ...

AI Technical Summary

Problems solved by technology

The technical problem solved by this invention is the wear between the drill tool and the well wall, and it is mainly aimed at land drilling. However, for the deepwater drilling field, the wear between the riser and the drill pipe inside the drill tool still cannot be effectively obtained. solve

[0004] For the problem of contact wear between the riser and the drill pipe, there are no related devices and methods at home and abroad to reduce or slow down the wear of the riser

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