... We developed a real-time interpretation algorithm for the Longhorn Neutron-Gamma density tool. The algorithmtakes advantage of inputs from the gamma ray and fast neutron detectors to achieve the desired level of density accuracy. The real-time interpretation algorithm is based...

... prediction evaluation density tool coefficient Fixture Crossplot count rate detection operation interpretation abandonment frictional force detector count rate ratio cement gamma ray ultrasonic measurement barite tension prediction Introduction and Historical Overview Much...

... on the measurement of formation density and neutron porosity has been developed. The use of standoff based binning in the density tool provides the first simultaneous measurement of density and compensation at several different standoffs. In addition to providing standoff binning for the density, the three axis...

... Abstract Density tools provide valuable information required to locate gas and evaluate formations. Although 200 Tcf of gas resources are estimated to exist behind pipe in the U.S. alone, present-generation density tools are unable to deal with the magnitude of cement thickness...

... hole measurements which offer cost savings and reduced risk. Using a specially modified wireline density tool, reliable measurements of formation bulk density can be obtained through casing. This measurement costs less than a measurement while drilling (MWD) density tool and reduces the chance of lost...

... Abstract With the advent of Measurement-While-Drilling (MWD) density tools in 1987, a new alternative to wireline for obtaining formation bulk density was introduced. As with any such introduction and evolution, comparative evaluations were made in order to assess the quality and quantitative...

.... These examples confirm the need for the proposed corrections and their drastic impact on the qualitative and quantitative interpretation of neutron and density logs. apparent porosity neutron log drilling fluid solubility spe 19611 density tool separation neutron porosity log analysis oil-based...

... well logging coal gamma ray application resistivity Upstream Oil & Gas density tool coal reserve neutron reserve classification system Appalachian SPE 9466 GEOPHYSICAL LOGGING AND EXPLORATION TECHNIQUES IN THE APPALACHIAN COAL FIELDS by Marshall S. Miller, Member SPE-AIME, Geologi- cal...