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Keywords: detector
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206383-MS
... tool for pipes and multiples casing for metal loss detection. This state-of-the-art technology is a noticeable improvement over existing tools, due to an important increase in the number of sources, number of detectors and wide range of working frequencies. The combination of these changes allows...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195806-MS
... analysis or a flame ionization detector for a complete assay. Isotope analysis is also possible. Recovery to surface of fluid samples collected at reservoir temperature and pressure allows for analysis with an automated gas chromatograph (GC) deployed in the field, providing reduced labor and rapid...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196007-MS
... to 25,000 psi while minimizing the attenuation of formation gamma rays entering the detector and maintaining good azimuthal sensitivity. The tool uses a robust, constrained, weighted least-squares (WLS) analysis to derive elemental concentrations from measured pulse-height gamma ray spectra. Proprietary...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196047-MS
... validation of shape memory polymer activation in the annulus of a simulated downhole environment. Prior attempts with a variety of logging services and a simpler test environment were inconclusive. log analysis smp expansion instrument waveform society of petroleum engineers detector neutron...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196090-MS
... of this open hole log acquisition and interpretation is displayed in Fig. 1 . detector reservoir pressure envelope Upstream Oil & Gas water saturation cc gas line well logging variation gas line log analysis depletion sensitivity saturation fluid property Statfjord gas density gas...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195950-MS
.... The lithology effect of the measurement is shown in Fig. 7 below. Environmental Corrections The Capture Ratio Abstract A new cased-hole porosity measurement has been developed for a four-detector pulsed-neutron logging tool. The measurement is based on a capture count rate ratio from two different...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191595-MS
... between densities in the range of 8 to 20 ppg. Experiments were then conducted to test the accuracy and feasibility of techniques developed for density and volumetric flow rate measurement. Based on these experiments, an X-ray source and detector were identified and a sensor was designed for inline use...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191707-MS
... hydraulic fracturing axial extent fracture height well logging fracturing fluid modeling Completion Installation and Operations Upstream Oil & Gas count rate signal log analysis proppant detector detector count rate perforation count rate perforation cluster fracture connectivity index...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191738-MS
...Sigma Logging Abstract Sigma logging is a proven method for determining oil/water saturation behind casing. In this paper, we present a new, diffusion-corrected, sigma algorithm for a four-detector pulsed-neutron logging tool. Since the diffusion effect is inversely related to the distance...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191438-MS
... Upstream Oil & Gas borehole Modeling & Simulation different condition well logging variation log analysis detector gamma ray porosity spectra standard spectra elemental standard spectra spectrum hydrogen Weight Fraction elemental concentration standard spectrum...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187114-MS
...-detector spacing for maximum accuracy. The tool design comprises a 14 MeV neutron source, two gamma ray detectors and two fast neutron detectors. Counts ratios are used to establish a linear relationship with formation bulk density. This design yields an accuracy of 0.0147 g/cm 3 in shale-free formations...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181279-MS
... and limitations of this measurement while drilling (NGD) technique will be highlighted and illustrated in the paper. detector neutron-gamma density measurement formation evaluation well logging rhob crossplot gamma ray log analysis specification GGD measurement density measurement NGD measurement...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181409-MS
.... The Mark 1 Sensabot was delivered in 2011 and contained an array of cameras, gas detectors, a vibration detector and a microphone. Trials of this robot were very successful so the development project was continued resulting in a manipulation arm and Sensabot Mark 2. The latter is now proceeding through...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-175048-MS
... Abstract A typical gamma-gamma density tool used for making borehole geophysical measurements has a source and two in-line detectors at different distances from the source which results in each having unique effective penetration lengths (EPLs). Gamma-gamma tools typically have internal...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-175104-MS
... completions. This will be presented in a separate publication. detector water saturation instrument water flow well logging water saturation method porosity saturation pulsed neutron instrument Upstream Oil & Gas oxygen activation oa measurement interpretation count rate log analysis...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-174945-MS
... scan trajectory detector projection drilling operation artifact cone angle Implementation reconstruction central slice image quality Upstream Oil & Gas trajectory reconstruction algorithm throughput rate algorithm katsevich scanner circular scan trajectory Introduction...

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