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Improve drilling efficiency with two nozzles and more weight-on-bit

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5631872
Field tests evaluated the performance of three-cone insert bits using only two nozzles sized from pressure measurements made at the rig to give maximum hydraulic impact. The tests were conducted on two rigs in California and three in Texas. Test techniques entailed finding a suitable formation that required two identical bits to drill through. The first bit was operated with three nozzles while the subsequent bit was operated with two nozzles. During the test the drilling parameters (such as weight-on-bit, rotary speed, nozzle flow area, pump pressure, circulation rate, and mud weight) were kept as constant as possible. Drilling rates of the two bits were then compared and analyzed with the aid of mud-logs, electric-logs, and drilling recorder information. The depth and the relative position of the formation were also carefully compared with offset well bit records.
Research Organization:
EXXON Production Research Co.
OSTI ID:
5631872
Report Number(s):
CONF-830203-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: IADC/SPE 11410
Country of Publication:
United States
Language:
English