Inventor
CURTIS FREDRICK D
US8 patents
⚠️ This page may combine multiple inventors who share the name “CURTIS FREDRICK D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HALLIBURTON ENERGY SERV INC
3 patentsUS7597151B2Oct 6, 2009
Hydraulically operated formation isolation valve for underbalanced drilling applications
HALLIBURTON ENERGY SERV INC42 citations90
US6962215B2Nov 8, 2005
Underbalanced well completion
HALLIBURTON ENERGY SERV INC28 citations90
US6644110B1Nov 11, 2003
Measurements of properties and transmission of measurements in subterranean wells
HALLIBURTON ENERGY SERV INC50 citations88