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Case Study: Managed Pressure Drilling Service Cuts Drilling Costs 50% in Challenging Ultrahigh-Temperature Wells

@balance services mitigates NPT, saves 20 days and USD 5 million in Gulf of Thailand

Challenge: Drill through narrow mud-weight windows and formation pressure uncertainties to reach TD in ultrahigh-temperature (ultraHT) offshore wells while keeping nonproductive time (NPT) to a minimum.

Solution: Implement @balance managed pressure drilling services to successfully complete the wells.

Result:

  • Successfully drilled section with no ballooning and extreme thermal effects on bottomhole pressure.
  • Efficiently killed wells, allowing for wireline logging.
  • Saved 20 days of drilling time and reduced well costs by USD 5 million or 50%.

An operator in the Gulf of Thailand faced costly challenges while conventionally drilling two ultraHT wells that reached temperature gradients up to 428 degF [220 degC]. In the ultraHT sections, the operator encountered serious ballooning issues that resulted in severe NPT and difficulty reach-ing TD. Narrow mud-weight windows and formation pressure uncertainties posed additional drilling challenges.


Download: Managed Pressure Drilling Service Cuts Drilling Costs 50% in Challenging Ultrahigh-Temperature Wells (0.30 MB PDF)

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Pressure control services to safely manage the pressure barrier in the well, ensure wellbore integrity, and drill more efficiently with reduced risk.
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