This paper discusses the planning and deployment of an expandable-liner-hanger (ELH) system in an offshore high-pressure/high-temperature (HP/HT) well for the first time in the United Arab Emirates (UAE). This paper also describes issues faced in terms of liner deployment in HP/HT wells in UAE waters and a reliable solution that saved time and material costs.
Introduction
The ELH system contains no setting mechanism or external components, such as slips, hydraulic cylinders, or pistons. The hydraulic-setting mechanism is contained in the setting-tool assembly and is completely retrieved, thus eliminating a potential leak path in the flowstream. The liner can be rotated and reciprocated in the hole or during cementing operations as necessary, which is not possible for conventional hangers. Furthermore, the selected ELH is manufactured from a material meeting critical specifications for maximum expandability and performance.
