Well Log Interpretations of Miscellaneous Oklahoma Reservoirs By Richard Andrews March 2009 GR & SP Resistivity Conductivity 0 API Well A #1-34; UPPER ZONE See Detailed Logs GR & SP RESISTIVITY 0 API GR SP shallow RtRt Well A #1-34; UPPER ZONE DETAILED LOG SECTION GR & CAL Microlog 1 & 2 0 API in 16 (ohms) Well A #1-34; UPPER ZONE DETAILED LOG SECTION GR & CAL Density & Neutron Porosity 0 API % 6 in 16 DETAILED LOG SECTION Well A #1-34; UPPER ZONE GR & SP Resistivity 0 API k Middle zone: See Detailed Log Lower zone: See Detailed Log GR SP Well A #1-34; MIDDLE & LOWER ZONES GR & CAL Density & Neutron Porosity 6 in % Lower zone: See Detailed Log Middle zone: See Detailed Log Well A #1-34; MIDDLE & LOWER ZONES GR & SP Resistivity 0 API k Middle zone Detail Lower Zone Detail DETAILED LOG SECTIONS Well A #1-34; MIDDLE & LOWER ZONES GR & CAL Density & Neutron Porosity 0 API in. 16 Middle Zone Detail Lower Zone Detail DETAILED LOG SECTIONS Well A #1-34; MIDDLE & LOWER ZONES Questions for Well A # How deep was surface casing set? What size casing did they use? What size drill bit was used to TD? 2.What is the reference elevation datum for the well logs? 3.What matrix density was used to calibrate the density log? What was the logging speed (feet per minute) and how long did it take to log the porosity? 4.What is the lithology in all 3 zones? Color sandstone = yellow, carbonates = blue 5.Define intervals having positive separation on the microlog in the upper zone. 6.How many GR API units define the shale base-line through the Middle and Lower zones? 7.Identify intervals having mudcake buildup in all 3 zones. Is the hole in good or bad condition for porosity logging? 8.What is the cross-plot porosity between 5,308 5,316 9.Why is the neutron and density porosity so different within the interval ? Are these porosity values valid? 10.Specifically describe the lithology/strata between 5,400 - 5,465? What type of fluid(s) are in this rock? 11.Tell me something about the rock sequence between 6,016 - 6,050 (rock type, vertical textural profile, porosity, permeability, and depositional environment). 12.What is the lithology from 6,170 to TD? Identify the intervals containing significant (>8%) cross-plot porosity? Do any of these have mudcake buildup and why??