«Onshore and offshore oil and gas well construction»

Modern methods for drilling and cementing the upper intervals of offshore wells and their application on the Arctic shelf

UDC: 622.24.085.5
DOI: 10.33285/0130-3872-2022-12(360)-50-58

Authors:

¹ Gazprom VNIIGAZ, Moscow, Russia
² Gazpromshelfproekt, Moscow, Russia

Keywords: offshore field, offshore drilling, well cementing, floating drilling rig, direction preset, safety, ecology

Annotation:

The article presents an overview of the most effective technologies for drilling and cementing the upper intervals of offshore wells. Their advantages and disadvantages are analyzed. The technology of driving the direction using a deep-water hammer and the method of setting the direction using a suction anchor (CAN technology) are considered. The areas of the most rational use of each method are determined. Their main advantage is shown – the ability to carry out the initial stage of wells construction without the use of a semi-submersible drilling rig (SSDR), thus providing significant cost savings as well as increasing industrial and environmental safety.

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