Enabling critical data acquisition in a critical research well

An operator in Norway drilled research wells for a deeper understanding of the geology. As such high quality data acquisition was the primary objective. Deviation, expected potential issues with well access due to small hole size, and borehole ovality made it challenging. As such, the customer tasked SLB and Petromac to provide a solution. With data quality and operational efficiency as the main goals, Petromac proposed to deploy wireline tools by gravity. Petromac simulations showed that the wireline toolstring drag could be reduced to as little as 5% by using Slim Tool Taxis. Armed with this, the slim taxis were deployed for the first time in Norway. In addition, Petromac Pathfinder was deployed to alleviate well access issues. The Petromac Pathfinder uses novel design and construction to achieve a neutrally buoyant centering device. This is mainly due to its high strength, low weight carbon fiber construction. The integrated flex along with the weak centralizer, allows the tool to articulate over ledges with low drag. The wireline tool sailed to TD with success. Data quality was devoid of stick-slip and no sticking observed during pressure testing and NMR data logging. Petromac Inline Tool Taxis with Pathfinder successfully navigated to TD in an ovalized 6.5” wellbore