The present disclosure relates to apparatus and methods for evaluating an earth formation though a drillstring during tripping of the drillstring. The apparatus may include a logging instrument including a formation evaluation sensor configured to be dropped or pumped into a drillstring at the end of drilling. The logging instrument may be configured to make measurements through a homogenous portion of the drillstring while the drillstring is being tripped. The apparatus may include a memory and processor for logging data for later retrieval. The method may include making at least one measurement indicative of a property of an earth formation using a sensor operatively associated with a logging instrument, wherein the logging instrument is conveyed to proximate to a homogeneous portion of a drilling tubular using the drilling tubular.
申请公布号
WO2011084828(A2)
申请公布日期
2011.07.14
申请号
WO2010US61777
申请日期
2010.12.22
申请人
BAKER HUGHES INCORPORATED;EVANS, JOHN, G.;HILL, FREEMAN, L.;CHACE, DAVID, M.
发明人
EVANS, JOHN, G.;HILL, FREEMAN, L.;CHACE, DAVID, M.