Industry Article: Well Construction Performance Service Harnesses Digital Advances

From 24/7 monitoring for downhole hazards to identifying inefficiencies, new service mitigates HSE risks and both ILT and NPT.

Publication: OTC Show Daily
Publication Date: 04/30/2018

Contributed by Schlumberger

Increased reliance on remote monitoring and advances in digital technology have launched a new era for well construction, bridging the gap between planning and execution through better use of data and collaboration. The OptiWell well construction performance service gives operators access to all available surface, downhole and logging information, with multidisciplinary experts providing 24/7 monitoring and analysis of operations, processes and well conditions in real time.

The service identifies inefficiencies and proposes new workflows and procedures that challenge the technical limits of rates of penetration (ROP) and other parameters to increase performance and reduce risk. The OptiWell service is currently deployed for multiple onshore and offshore wells globally. Service centers in Houston and Norway remotely monitor and analyze global operations for multiple disciplines, including drilling, mud logging and geomechanics, providing the ability to apply only those workflows needed for a specific well.

Well Construction Performance Service Harnesses Digital Advances

Real-time continuous well monitoring services enabled Det Norske to improve ROP and reduce issues related to undesirable tripping performance.

The performance management component of the service benchmarks all well construction operations and compares them to industry key performance indicators (KPIs), generating data that can be used to improve the well construction process. By targeting specific KPIs, operators can implement the service for a specific project or general efficiency improvement, focusing on specific areas of operation that are not meeting objectives. Workflows also can be adapted for a single-well exploration campaign or a multirig, multiwell field development project.

The service integrates other well monitoring and analysis services to improve hole cleaning, reduce wellbore risk and ensure drillstring integrity. For example, the RigHour multiwell drilling operational efficiency analysis computes and compares drilling-specific KPIs to improve drilling efficiency and reduce costs. The analysis reduces invisible lost time (ILT) time, or the time between actual and technically achievable duration, in making connections, circulating, tripping, cementing, setting casing and running the blowout preventer.

The hazard management component further reduces nonproductive time and HSE issues by monitoring and analyzing the downhole environment to detect potential risks to drilling operations, such as severe gains or losses that could cause a kick, stuck pipe or high vibration zones that could compromise borehole and bottomhole assembly (BHA) integrity.

Boosting performance offshore Norway

Norwegian operator Det Norske successfully used the OptiWell service to improve operational efficiency and drilling performance during a casing and completion run in the offshore multiwell Ivar Aasen development field. The project involved performing single-well monitoring focusing on new well construction KPIs. The initial wells were drilled in three sections by a jackup from predrilled top holes.

After establishing benchmarks for each KPI, OptiWell provided 24/7 monitoring for about one month, while the Schlumberger well operations analyst notified the operator whenever rig performance deviated from plan. The service was deployed in conjunction with the InterACT global connectivity, collaboration and information service, which displays real-time KPIs. This enabled the operator to take immediate action instead of waiting to access the KPIs in the next day’s report.

By comparing each section of the current well to sections in previous wells, the analyst determined where performance could be improved in the next well, which represented an important first step toward identifying efficiencies and potential cost savings through reduced ILT.

Throughout the drilling phase, the operations analyst outlined well monitoring workflows and processes to allow the operator to push ROP to the maximum level as safely as possible. The service also used the VIRTUAL HYDRAULICS drilling fluid simulation software to facilitate continual access to tripping schedules and hydraulic simulations. A specially designed program monitored and detected warning signs during tripping.

In one well, the service set field records for net and gross ROP in the 8 1/2-in. and 12 1/4-in. sections, achieved a 48% decrease in slip-to-slip tripping time compared with the project average and improved casing slip-to-slip performance. Additionally, the service improved drilling consistency and tripping performance to enable multiple casing and completion runs. Det Norske has also seen continuous improvement in the makeup and laydown times of BHAs.




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