The Quad Neutron is a four detector nuclear measurement tool specially designed for through pipe reservoir evaluation. Two sets of detectors are positioned around a removable AmBe neutron source and housed in a 43mm OD down hole logging assembly called a Quad Neutron Tool (QNT), or “Quad”. Also in the Quad tool string are several supporting detectors. These include: Natural Gamma Ray, Split Spectrum Gamma Ray, CCL, Top and Bottom Temperature, Fluid Resistivity, and an Accelerometer. The Quad data bus and modular connector configuration enables attachment of many other detectors to be accommodated for specific applications.
Quad Neutron tool is used on high risk horizontal new drills and can log through drill pipe, case and then log. It’s also a great tool for cased reservoir management wells and can identify areas with high water saturation and bypassed hydrocarbon. Applications for shale oil and gas formations, formation water salinity determination and fracture planning and evaluation can also be done with this tool.