Case Study: Integration Drives Performance and Accelerates Learning Curve in an Ultra-Deepwater Pre-Salt Exploration Drilling Project in Brazil

Halliburton integrated services achieves new benchmarks in post-salt and salt sections

Challenge – The operator faced many challenges to build exploratory wells in this ultra-deepwater environment,
with the main objectives to minimize the significant drilling risks and costs and reduce the total cost of well construction and evaluation. Other challenges included the long 28-inch riserless section in the post-salt formations facing hole instability issues and high torque and drag and vibration; the occurrence of hard rock intercalations in the salt and sometimes in the post-salt sections; very thick salt zones of around 2000m (6562 ft); geo-stopping at the top of the carbonate reservoir; low rate of penetration in hard and abrasive pre-salt carbonate reservoir with high carbon dioxide (CO2) and hydrogen sulfide (H2S) concentrations and severe fluid losses. Salt imaging, reservoir characterization, zonal isolation in salt zones and at the reservoir with high CO2 concentrations and remote locations up to 200 km (124 mi) offshore also had to be addressed.

Solution – First, a Halliburton Project Management organization was nominated with a dedicated project manager, an IS coordinator, an operations manager, wellsite supervisors, a logistics coordinator, a senior well engineer and technical advisors from the segments involved, consultants for geomechanics, Drilling Engineering Solutions (DES) experts with DrillingXpertSM advanced software package, Formation and Reservoir Solutions (FRS) and real-time monitoring services. A performance leader and health, safety and environment (HSE) coordinator are also members of this organization providing support in HSE, service quality, and review meetings on performance and lessons learned with the client for continuous improvement.

Early engagement of the Project Management team with the client and the creation of a communication protocol and an integrated execution plan were fundamental for a smooth project startup, helping to create a collaborative environment for risk identification and management, engineering support during well planning, proper selection of technology tools to enhance project performance, fostering synergies among Halliburton and stakeholders.

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