Underwater small wellhead coiled tubing drilling system
A tubing and drilling technology, which is applied in the field of underwater small wellhead coiled tubing drilling system, can solve the problems of waste, complicated procedures, large time consumption and economic cost, and achieve the effects of avoiding pollution and remarkable economic benefits
Pending Publication Date: 2021-10-01
派格水下技术(广州)有限公司
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- Application Information
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Problems solved by technology
[0002] In marine geological exploration drilling operations, conventional drilling methods are usually used, both using risers and conventional drill pipes, on large drilling platforms or drilling ships, and conventional drilling procedures are complex, consuming a lot of time and economic costs
Most of the wells drilled in marine geological exploration are small holes, and the use of conventional drilling with large holes will cause huge waste
Method used
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[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings.
[0026] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "mounted", "one end", "the other end" and similar expressions are used herein for the purpose of description only.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0028] refer...
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The invention provides an underwater small well mouth coiled tubing drilling system. The drilling system comprises a floating drilling platform, a coiled tubing drilling mechanism and a drilling fluid backflow unit, the coiled tubing drilling mechanism comprises a coiled tubing winch, a coiled tubing leading-in device, a drilling fluid volume control unit, a coiled tubing blowout preventer and a small well mouth base disc, the coiled tubing underwater blowout preventer is fixed on the small well mouth base disc, the drilling fluid volume control unit is fixed on the coiled tubing underwater blowout preventer, and the drilling fluid volume control unit is fixed on the coiled tubing underwater control unit; and the drilling fluid backflow unit is also fixed on the small well mouth base disc, and the drilling fluid volume control unit communicates with the drilling fluid backflow unit through a drilling fluid backflow hose. According to the underwater small well mouth coiled tubing drilling system, drilling fluid can be recycled, and miniaturization of a drilling platform is facilitated.
Description
technical field [0001] The invention relates to the field of exploration drilling, in particular to an underwater small wellhead coiled tubing drilling system. Background technique [0002] In marine geological exploration drilling operations, conventional drilling methods are usually used, both using risers and conventional drill pipes, on large drilling platforms or drilling ships, and conventional drilling procedures are complex, consuming a lot of time and economic costs. Most of the wells for marine geological exploration are small boreholes, and the use of conventional large boreholes will cause huge waste. Contents of the invention [0003] Based on this, the drilling system does not need to use a riser and is suitable for small ships, so that the drilling system is no longer limited by the size of the drilling platform or drilling ship, the drilling procedure is simplified, and the marine geological exploration operations of small wells can be carried out flexibly ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B7/12E21B19/22E21B19/24E21B33/064
CPCE21B7/12E21B19/22E21B19/24E21B33/064
Inventor 斯迈·格莱迪奇
Owner 派格水下技术(广州)有限公司