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An operator offshore in Vietnam needed to set a liner in a challenging slim hole without compromising the drilling operation.

Baker Hughes, a GE Company (BHGE), was called on to open the 6-in. hole to 7-in., perform a sidetrack, set a 5-in. liner, and drill and ream a long lateral, all in one run. The operation had to be performed before the operator could resume production on the well, so time was critical.

The BHGE team implemented a bottom hole assembly (BHA) consisting of the BHGE GaugePro™ Echo digital reamer, BHGE AutoTrak™ rotary steerable system, and the BHGE OnTrak™ resistivity Gamma Ray imaging service. The GaugePro Echo reamer was digitally activated via downlink, and under reaming commenced. Throughout the under-reaming operation, tool performance and confirmation of the enlargement diameter was monitored in real time.

The GaugePro Echo Series 6 cut and reamed a total of 6,070 ft (1.15 mi or 1,850 m) with a 2.8° dogleg, using the rotary steerable AutoTrak system. The entire operation was performed smoothly in one run, with a ROP of 94-131 ft (30-40 m) per hour. No specification vibration was recorded and the 5-in. liner was set with no issues. This was the first time BHGE had deployed its GaugePro Echo in the Asia Pacific area.

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Challenges & Results
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Challenges

  • Slim hole well with 2.8° dogleg
  • Liner to be set with no operational disruption
  • Short time frame due to halted production

Results

  • Well opened successfully and liner set with no issues
  • Cut and reamed a total of 6,070 ft in one run
  • Saved production and several days of time
  • Avoided operational risks