packer solutions to enhance construction and protect the lifespan of these wellbores. Like oil and gas wells, zonal isolation for stimulation is important along with the ability to repair any wellbores that are shut-in due to casing collapse, a common issue in this sector. ENABLING THROUGH TECHNOLOGY In one example, a 23MW geothermal well had to be shut-in, due to significant failures within the casing. The solution was a Welltec Annular 60
Barrier that allowed for a pressure-tight base and hydrostatic support to the column of cement slurry placed above it. This removed any contamination during the curing process, resulting in a good cement operation and offering mechanical support to the casing string in the event of thermal contraction or expansion during production or shut-down operations. This was the first time a WAB had been used to revive a geothermal well. The job also marked the CFI.co | Capital Finance International
first time Welltec worked in a geothermal well, in the Philippines. It deployed the WAB with secondstage cementing equipment to save the well and ensure savings for the client. To have drilled a new well would have cost the between $9m and $12m. Developing new solutions to meet specific challenges that the energy industry is facing has become a hallmark and signature of Welltec. The commitments made at the company’s foundation 25 years ago remain steadfast. i