Reservoir Evaluation Tool (RET)
Description
The Reservoir Evaluation Tool (RET) represents a groundbreaking leap in reservoir saturation logging. The Reservoir Evaluation Tool (RET) is unique among thermal decay tools. Unlike typical Capture tools that measure the gamma rays emitted when thermal neutrons are captured by formation elements, the RET directly measures the decay of the thermal neutron population itself using two (2) highly efficient Helium 3 detectors. This direct measurement of the thermal neutron decay, rather than an indirect gamma ray measurement, results in a more pure and accurate representation of the formation's Sigma values. In low salinity and low porosity environments where other tools struggle, the RET can better differentiate between water, oil, and gas contacts. Beyond just identifying contacts, the RET can also quantify saturations in these difficult formations, providing more detailed information than the qualitative results of other
tools. Additionally, the RET is unaffected by the high gamma ray environments found in older wells, where radioactive salts have built up on the tubulars and in the surrounding formations from years of production. Traditional tools need to try to correct for this, further reducing their accuracy. All of these capabilities make the RET a competitive formation evaluation tool for high to moderate salinity formations, as well as the ultimate thermal decay tool for lower salinity and lower porosity formations.
- Advanced Pulse Neutron Technology for unparalleled accuracy.
- Fluid Differentiation.
- High Resolution Data.
Features
Specifications
| Maximum Temperature | 3500 (1750c) |
| Maximum Pressure | 15,000psi(103MPa) |
| Length | 5110mm(201,18”,16.7’) |
| Tool OD | 43mm(1-11/16”) |
| Logging Speed | 3.4 - 4m/min(13.1ft/min) |
| Neutron Flux | 2 x 10N/s |
| Neutron Energy | 14.1 MEV |
| Neutron Pulse Duration | 1 to 3μS, Repeat 75MS |
FAQs: We have got answers
Explore the frequently asked questions about the Reservoir Evaluation Tool (RET).
The RET directly measures thermal neutron decay using Helium-3 detectors, providing more accurate saturation measurements compared to traditional gamma ray methods.
The RET is particularly effective in low salinity and low porosity formations where other tools may struggle to differentiate between fluid contacts.
The RET employs advanced pulse neutron technology and is unaffected by high gamma ray environments, resulting in reliable data even in challenging conditions.