... using cased hole density, epithermal and thermal neutron porosity, sonic, and resistivity, are examined. Comparisons are shown with open hole data, in situations of varying cement quality, casing condition and varying hole conditions. The paper reviews the lessons learned, the limitations of each...

... limit of that value. Then the lowest of these indications is likely to be very close to the actual value. The method is applicable not only for shaly sands, but also for complex lithologies. Upstream Oil & Gas information neutron well logging hole condition gamma ray clay point log...