Quest for quality data

accuracy and precision annual logging symposium Array Induction barite bathroom scale beds borehole calibration caliper complete complicated computed courtesy of Schlumberger courtesy of SPWLA curves data acquisition data objects data quality data set data user data vendors database decision threshold deliverables delivered depth of investigation detectors digital file displays down-hole drill string driller drilling data effects environmental corrections evaluation example field engineer Figure fluid Formation evaluation formation resistivity g/cm³ gamma ray graphical hole induction tool interpretation interval invasion laterolog logging companies logging job logging measurements logging speed logging tools logging-while-drilling measured values mud cake mud logger neutron ohm-m oil company parameters performed petrofree petrophysical porosity pressure processing quality control quantified quantitative recorded reference reservoir result rock sensors specifications standard standoff surface systematic errors Table time-indexed tion true value uncertainty vertical resolution weight wireline zone