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Title: Well drilling apparatus and method

Patent ·
OSTI ID:862861

Well drilling rates may be increased by impelling projectiles to fracture rock formations and drilling with rock drill bits through the projectile fractured rock.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
DOE Contract Number:
AT(29-1)-789
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Number(s):
US 4030557
OSTI ID:
862861
Country of Publication:
United States
Language:
English