From Houston API Calibration Pits… to Artigueloutan Logging Metrological Facility
- Pierre Chuilon (Total SA) | Gilles Puyou (Total SA) | Emmanuel Caroli (Total SA) | Thibaud Vandamme (Modis) | José Inciarte (Halliburton) | Maciej Kozlowski (Halliburton) | Bill Dillon (Halliburton)
- Document ID
- Society of Petrophysicists and Well-Log Analysts
- SPWLA 60th Annual Logging Symposium, 15-19 June, The Woodlands, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2019. held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors
- 3 in the last 30 days
- 129 since 2007
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Following the closure in recent years of the EUROPA/Callisto (UK) and the Houston API (TX, USA) nuclear logging calibration facilities, a new calibration laboratory opened in May 2018 in Artigueloutan (France) by Total SA close to its scientific and technical center located in Pau. A dedicated affiliate, Total E&P Alternative Subsurface Data (TEP ASD) leads the project independently from its headquarters. The calibration center is open to all well logging service providers, probes manufacturers, O&G companies, and academics.
The center owns 22 porous, water or brine-saturated rock standards that are the basic of any logging calibration facility. TEP ASD is also equipped with a large set of fluid standards in four vessels, ranging from freshwater to high-salinity brines. High porosities are achieved with two sand standards made of different lithologies and fully saturated with fresh water. A thin epoxy/fiber glass liner creates a borehole where different fluids can be pumped in. A full set of metallic standards made of aluminum alloy and aluminum composite are also proposed in six different borehole diameters that can be filled with various fluids.
All standards were initially designed and modeled to calibrate logging tools in openhole conditions, but the facility can also provide a collection of removable sleeves built with different casing and tubing types that can be run in the rock, sand, and fluid standards. Clients can bring their own specific completion sleeves to run in the calibration facility and therefore follow a fit-for-purpose characterization protocol. The combination of all standards, fluids, and sleeves allows a wide range of calibration conditions, which makes the TEP ASD facility unique.
Extensive geological, geochemical, and petrophysical analyses were completed on all standards at various scales (blocks, slabs, central core, and plugs) with the latest technologies, procedures, and measuring instruments connected to the International Measurement System. Uncertainties were evaluated in all steps of the process. In addition, specific upscaling and downscaling studies were performed to ensure consistency and a thorough description of the standards. This data is available to any client.
During the last quarter of 2018, the latest generation of litho-density logging tools from an industry-leading service provider were calibrated following the API standards in the TEP ASD in Artigueloutan. The output logging data was independently quality controlled by each party and compared to the characterization database to benchmark the center to independent “master standards.”
All calibrations can be run in two different levels: a basic option with a complete access to all standards and the characterization database or a second degree adding the delivery of a metrological confirmation form after each calibration experiment.
The TEP ASD facility in Artigueloutan can be considered as a reference for logging tool calibration with best-in-class health, safety, environment, and radioprotection procedures for the entire oil and gas industry to face new challenges in formation evaluation.
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