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A customer working offshore Australia was developing a new field and needed to design its completion, surface facilities, and production pipeline.

Unsure of the chemical composition of the produced fluids, the operator was concerned that without collecting large volumes of high-quality fluid samples and performing a detailed geochemical analysis, the fluids could react with the metallurgy of downhole and surface equipment and degrade them, leading to significant costs and HSE risks.


Though downhole fluids characterization was useful, the operator knew that thorough, lab-quality analysis was needed to achieve the highest returns from its field and to prevent the catastrophic failure that could result if its completion, surface, and pipeline components were compromised by the non-hydrocarbon contaminant gases the field contained.


Wireline-conveyed sampling was not a solution because the well was highly deviated, with inclination of up to 80°, presenting a very real risk of differential sticking. And to conduct comprehensive chemical analysis, the operator knew they would need at least 20 liters (5.3 gallons) of representative fluid samples. No other commercially available fluid sampling while drilling services could reliably meet the client’s sampling and risk reduction objectives.


But the operator also knew that Baker Hughes, a GE company (BHGE), has a track record of gathering high volumes of high-quality samples with no history of differential sticking, and asked BHGE to propose a solution.

After discussing the specifics of the reservoir and understanding the operator’s goals and challenges, BHGE proposed the FASTrak™ Prism fluid analysis and sampling while drilling service.

Download the PDF to read the full case study.

Challenges & Results
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Challenges

  • 20 liters of representative fluid samples required
  • Protect completion and surface equipment from corrosive downhole fluids
  • Highly deviated well, with inclination of up to 80°

Results

  • Captured 26 samples for a total volume of over 20 liters across two wells in two runs, setting a global fluid sampling record
  • Acquired representative samples, enabling proper facilities design
  • Prevented differential sticking