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The drilling environment in Sicily presents unique challenges to successful hydrocarbon extraction. High costs of water disposal and treatmentmean that wells with more than 10% water cut are not economical to develop. Therefore, locating and avoiding water-bearing zones is extremely important.

An operator wanted to reduce the water cut in a well with known wellbore instability challenges, which can affect the quality of formation evaluation data. LWD/MWD and wireline logs were run to set the proper placement of the packers and to avoid any geohazards during production. However, when the well was turned on for production, there was a water cut ofmore than 70%.

After consulting with Baker Hughes, a GE company (BHGE), a solution was provided based on the integration of the datasets that were collected at the wellsite and the interpretation of the FE datasets.

The HC-Vision™ reservoir characterization service provided critical indicators of wellbore hydrocarbon volumetrics, saturations, porosity, and permeability. These indicators delivered answers about the reservoir’s fluid type, productive or nonproductive zones, potential fluid contacts, reservoir compartmentalization, and natural fractures.

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Challenges & Results
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Challenges

  • Wellbore instability affected the quality of formation evaluation data from e-logs
  • High water disposal and treatment costs

Results

  • Increased production from 75 B/D to 370 B/D
  • Reduced water cut from 175 B/D to 30 B/D
  • Decreased water disposal and treatment costs