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Tractor System Successfully Deploys Shale Barrier Assessment Tools in Highly Deviated Well Section
Challenge – The well section in question was a highly deviated section (72°), meaning that any deployment by gravity alone would be unachievable. Additionally, a restrictive deck footprint meant that any option would need to fit in with a busy rig that had ongoing subsea P&A operations. Good-quality data would be required for immediate specialist analysis and identification of suitable shale barrier zones behind the 9 5∕8 -inch casing to enable a real-time isolation barrier solution that could be implemented and verified.
Solution – Deployment modeling confirmed that challenges could be encountered that would prevent a standard tool string from reaching the required depth. It was determined that tool deployment with the Halliburton RELAY
tractor system would be the most efficient method, should deployment assistance be required in the well.
Halliburton CAST-M and CBL-M tools, along with its multi-finger imaging tool (MIT), were selected to gain all the necessary data in a single pass in order to effectively identify and evaluate any shale barrier zones behind the 9 5∕8 -inch casing. Deployment on mono-conductor e-line ensured a minimum footprint on the rig.
The Halliburton Formation and Reservoir Solutions team recommended utilizing its advanced cement evaluation, barrier assessment analysis, and casing inspection services to provide fast-turnaround information so that immediate decisions could be made regarding this well barrier solution.
Halliburton tubing-conveyed perforating (TCP) and completions teams proposed a combined tool string for an efficient isolation barrier pressure test.
Download the case study (PDF) below to read more.
The post Case Study: North Sea Operator Trials Innovative P+A Barrier Verification with Potential Savings of 34 Hours Rig Time appeared first on Halliburton.
