• Hard igneous rock formations
  • Average of 20 runs to complete 8.5-in. section
  • Severe bit coring
  • Required 80 to 100 days to TD
  • Saved $1.5 million USD in rig time
  • Improved ROP by 200%
  • Increased distance drilled by 100%
  • Mitigated bit coring
  • Saved customer 50 days over plan

Case study details

Our customer in Northeast China was experiencing difficulties drilling in the hard and abrasive rock formations of the Daqing natural gas field. The pay zone is a lateral section that consists of igneous rock at a true vertical depth (TVD) of 3,000 m (9,842 ft) and unconfined compressive strength (UCS) is estimated to be greater than 25,000 psi.

Average wells were taking 80 to 100 days to total depth (TD) and required approximately 20 drill bits due to severe coring damage to the center of the bit.

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