Rotation by Reciprocation Casing-Landing Technology

Topics: Drilling operations
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With the innovation of extended-reach and directional drilling, running casing and liner strings has become increasingly difficult. Not much has been done to address the challenges, which include ledges and obstructions, washouts, swelling shale, bridging, high doglegs, difficult well profiles, fill on bottom, and well collapse. To overcome the challenges, a new product line was developed as a way to facilitate casing operations, especially for long horizontal strings, production strings, and intermediate casing strings.


The technology can rotate independently from the casing when encountering obstructions and hanging. The rotation is performed by reciprocating the casing through 3- to 5-ft strokes that cause the tool shoe to act as a bit and ream. It drills off the obstruction and guides the casing string through ledges, tight swollen sections, and doglegs, allowing effective removal of fill and debris from below the casing/liner shoe to land at the intended total depth (TD).

The technology comprises two main components: the tool body, which is made similar to the casing grade being run, and the internal mechanism, which is made from industrial-grade aluminum alloy for the mandrels and bronze components for the bit, both of which lend strength and durability to the tool while facilitating a smooth clean drillout with a standard polycrystalline-diamond-compact (PDC) bit.

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper SPE 172144, “Rotation by Reciprocation Casing-Landing Technology,” by R. Gosselin and T. Montgomery, Longhorn Casing Tools; A. Muriby, SPE, and Moataz Yussef, Wildcat Oilfield Services; and S. Karrani and A. Khamis, Abu Dhabi Marine Operating Company, prepared for the 2014 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, 10–13 November. The paper has not been peer reviewed.
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Rotation by Reciprocation Casing-Landing Technology

01 December 2015

Volume: 67 | Issue: 12