Directional/complex wells
Improved bit and bottomhole-assembly technologies and designs have helped turn what used to be record-breaking drilling runs into routine expectations.
This paper provides an account of the design, implementation, and operational insights from an enhanced geothermal system proppant stimulation targeting a volcanic, dry rock setting with an approximately 330°C bottomhole temperature.
This study evaluates the feasibility of drilling a closed-loop, unconventional geothermal system in the Pannonian Basin basement of Romania.
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Whether considering the customization of drilling approaches in Middle Eastern carbonate reservoirs, implementing a collaborative work flow in tackling high-tortuosity wells offshore Western Australia, or researching the ability of a fibrous material to effect hole cleaning as opposed to polymeric sweeps, the authors of these papers understand that technical expertise… -
Effective use of downhole dynamics and mechanical specific energy data played a critical role in delivering a well that was the longest in the Middle East, and the fourth-longest globally, at the time of writing.
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A specialized fibrous material was examined and was found to be effective for hole-cleaning applications.
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The operator drilled a pair of complex, ultraextended-reach-drilling (ERD) wells a mature offshore Western Australia field despite shallow reservoir depth, extreme ERD profile, and high tortuosity requirements.
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Anomalies in heart function can be diagnosed in real time by measuring an electrical signal. Petroleum engineers have adapted the concept to diagnose anomalous drilling conditions in real time using a shock signature recorded downhole.
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Schlumberger has won a $480-million contract to drill 96 oil wells in southern Iraq for the country’s Basra Oil Company and for ExxonMobil, which operates the giant West Qurna-1 field with partners from Iraq, Japan, Indonesia, and China. West Qurna-1 is one of the world’s largest oil fields.
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Utah FORGE has completed the first highly deviated, deep geothermal well to target depth and at planned trajectory, 60 days ahead of schedule.
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Our understanding of drilling with better software, instrumentation, machines, computer vision, downhole tools, and robots will continue improving the economics of horizontal wells, and the trend is set to continue. This is good news for the geothermal market.
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The complete paper describes an offshore artificial island project northwest of Abu Dhabi in which drilling limits were extended continually by adopting new technologies and practices in an extended-reach-drilling (ERD) campaign.
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Rystad Energy compared the decommissioning costs based on two similar steel platforms, one in each region, using its cost-estimating tool.
