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Application of bicenter bits in well-deepening operations

Journal Article · · SPE (Society of Petroleum Engineers) Drilling Engineering; (United States)
DOI:https://doi.org/10.2118/19921-PA· OSTI ID:5676444
 [1]
  1. Eastman Christensen Lateral Drilling, Houston, TX (United States)

This paper describes the design and operational evolutional of bicenter fixed cutter bits used to drill and to underream below existing casing for a well-deepening program in south Texas. These bits were required to pass through the casing ID and to drill a hole diameter large enough to allow adequate annular clearance for cementing a liner. The traditional method for deepening these wells required several roller-cone bits and hole openers. Use of bicenter bits decreased the cost of the well deepening by eliminating bit and undereamer trips and increasing rate of penetration (ROP).

OSTI ID:
5676444
Journal Information:
SPE (Society of Petroleum Engineers) Drilling Engineering; (United States), Journal Name: SPE (Society of Petroleum Engineers) Drilling Engineering; (United States) Vol. 6:2; ISSN 0885-9744; ISSN SDENE
Country of Publication:
United States
Language:
English