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NMR quality control

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Journal Articles
J Pet Technol 73 (02): 59–60.
Paper Number: SPE-0221-0059-JPT
Published: 01 February 2021
...Chris Carpenter This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 201358, “Quality Control of NMR Measurements in Unconventional Rocks Using Hilbert Transforms and Semilogarithmic Derivatives,” by Pierre Aérens, SPE, David Medellin, and Carlos Torres...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201358-MS
... distribution that is not affected by inversion artifacts. These two methods are data-driven processes for on-site, continuous quality control of borehole NMR measurements. In the first method, a pseudo- T 2 distribution is constructed by taking the derivative of the echo train decay with respect...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 1–4, 2000
Paper Number: SPE-63212-MS
... importance when NMR is run as a standalone service. NMR applications require proper job planning and acquisition for successful data processing, interpretation and integration with conventional logs. Quality control procedures are particularly important during data acquisition and during the creation...
Proceedings Papers

Paper presented at the SPE Trinidad and Tobago Section Energy Resources Conference, June 25–26, 2018
Paper Number: SPE-191164-MS
... Before reprocessing NMR data, the field display Log Quality Control (LQC) format was generated. The resulting display was checked for agreement from measurements and electronics such as Window porosities, noise, Cable speed, Magnetic field strength. Particular attention was paid to tension...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-HH
..., hydrocarbon properties and producibility of reservoirs at the earliest stages of exploration and development drilling. High resolution LWD NMR data during early exploration is well suited for principal component analysis, which is highlighted in this paper. well logging quality control Engineer...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 8–10, 2012
Paper Number: SPE-160022-MS
... or sliding in a range of hole sizes, including large holes previously inaccessible to LWD NMR measurements. Benefits and trade-offs of key tool design features are presented. Emphasis is placed on measurement quality, operational simplicity and log quality control in real time and memory mode through...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 9–12, 2020
Paper Number: SPE-203456-MS
... The lateral motion effect on LWD NMR data is proportional to drilling dynamics. Wellbore tortuosity is one of the main factors contributing to the downhole drilling dynamics. Recent studies proved that drilling steering mechanism type controls wellbore tortuosity, hence, applying the proper...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 9–12, 2020
Paper Number: SPE-202867-MS
...), and later flushed by bulk oil crude for the second measurement. The sample weight was measured before and after the NMR and centrifuge measurements for the purpose of quality control. The core NMR measurement parameter setup compared to the wireline in the pilot wells and LWD in the development wells...
Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-AAA
... electrical conductivity and measurement averaging effects (Figure 9). In these examples, the optimum background SSF is selected based on the mud to formation electrical conductivity ratio and pulse time width. This information is readily available from resistivity logs and NMR quality control data. In Figure...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 12–15, 2018
Paper Number: SPE-193187-MS
... model is not the best when the pore contains hydrocarbons, because the T2GM is not controlled exclusively by pore size. However, in the presence of connected vugs, the Coates-Timur model might underestimate the permeability, as it considers pore and vugs equivalently as movable fluid. The calibrated NMR...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, September 17–19, 2019
Paper Number: SPE-196710-MS
.... In the case subject to study, ROP was controlled that it does not to exceed 100 Ft./hr. throughout the run ( Figure 11 , Track-1). Signal to noises ratio (SNR) of the NMR-WD has been closely monitored in real-time during the operation to maintain high data quality. In general, a stable, low noise level can...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 10–13, 2014
Paper Number: SPE-171932-MS
.... This condition makes standard logging suits inadequate. Therefore, advanced logs interpretation (NMR) with the integration of geological understanding, core and dynamic data are essential to derive a robust flow characterization. A comprehensive evaluation on multi wells that link different aspects controlling...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 7–10, 2016
Paper Number: SPE-183092-MS
... the perforations across Layer-3 MDL and LWR, which have the highest permeability trends (Track 8), water injection has been controlled to 17% for each, whereas the less quality rock types of Layer-4 UPR and MDL are allowed to inject at almost double the rate (+/-33% each). The integrated, real-time NMR-based...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582984
... rithms to produce synthetic density and porosity logs using highlight the data quality issues in the density and NMR poros- pressure-core data as ground truth and to improve saturation ity logs. estimation. We discuss the supervised machine learning work- ow from data preparation, feature selection...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-30931-MS
... is to demonstrate the value of Nuclear Magnetic Resonance (NMR) log data to provide rock quality and fluid typing in this challenging environment, where conventional logs are not enough for reservoir understanding along a horizontal well. A horizontal 6 1/8" section was drilled through the Middle Burgan formation...
Proceedings Papers

Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5013
... ABSTRACT The effect of mud filtrate and eventually fine migrations in high quality rocks considerably influence the reading of NMR and conventional logs. It poses a challenge in extracting useful information that can contribute to the petrophysical evaluation of the virgin zone, e.g . the rock...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 26–29, 2020
Paper Number: SPE-201975-MS
... to validate experimental results. To increase fluid susceptibility to NMR measurements, fractures were replicated 6 times in each plug. X-ray micro-computed tomography images were conducted to evaluate the manufacturing quality and geometrical parameters. NMR T 2 relaxation time and saturation profiles were...
Proceedings Papers

Paper presented at the SPE Saudi Arabia Section Technical Symposium and Exhibition, April 21–24, 2014
Paper Number: SPE-172239-MS
... all requirements for an optimized fracture stimulation design. Along the way, it can also generate individual quality control plots and logs from any of its workflow components, enabling transparency of all processes to the end user for further decisions. Advanced 2D NMR analysis facilitates improved...
Journal Articles
Petrophysics 62 (01): 73–88.
Paper Number: SPWLA-2021-v62n1a5
Published: 01 February 2021
... of this interpretation workflow is to confirm the free-water level (FWL) derived from pressure gradients. We found the S w profile largely controlled by heterogeneity in rock textures. The presence of both good and poor-quality rocks makes log-based FWL picking difficult. We use S wirr from NMR to indicate rock quality...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 7–10, 2016
Paper Number: SPE-183436-MS
... of these additional measurements to allow a reasoned view to be taken as to the design of a cost effective laboratory NMR program for possible use in other reservoirs. Core acquisition methods were standard except that the presence of suspected pre-existing natural fractures in the poorer quality upper part...

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