... 65 correction heterogeneity pre-salt carbonate reservoir SPWLA 65th Annual Logging Symposium, May 18-22, 2024 DOI: 10.30632/SPWLA-2024-0046 AN AUTOMATIC APPROACH FOR CORE-TO-LOG DEPTH MATCHING IN PRE-SALT CARBONATE RESERVOIRS Adna Grazielly Paz de Vasconcelos, Luciana Velasco Medani, Rodrigo...

... accurate corrections. The successful application of the improvements in the measurement is shown in several log examples. PRINCIPLES OF THE MEASUREMENT The basic principle of the measurement (Evans et al., 2012) largely remains unchanged. The determination of density is still based on measuring...

... and horizontal) wells. Over the past two decades, a number of papers discussed the importance and ways to solve for the true resistivity from the apparent resistivity logs. Operators typically have to rely on each vendor to provide that vendor's unique corrections. We developed a unified inversion processing...

.... The presence of four Rx also provides a great redundancy in terms of Tx-Rx combinations. For example, an underperforming Rx can be reinstated by another available Rx without having to revert to complex processing algorithms. Charts for environmental corrections (i.e., borehole and dielectric effects...

... for embedded systems(Rajamani and Rawlings, 2009; Welch and Bishop, 1995). The application of Kalman filtering in the field of well logging has been studied since the 1980s, such as predicting pore pressure while drilling(Bektas et al., 2015), correcting real time speed in high resolution logs(Belougne et al...

...SPWLA 65th Annual Logging Symposium, May 18-22, 2024 DOI: 10.30632/SPWLA-202 -0004 THE EVALUATION AND CORRECTION OF PHOTOELECTRIC FACTOR IN THE PRESENCE OF LARGE STANDOFF AND HEAVY MUDS Bair Banzarov, Andreas Vogt, and Nicklas Ritzmann, Baker Hughes Copyright 2024, held jointly by the Society...

.... In hydrocarbon bearing intervals this technique estimates hydrocarbon effect and corrects acoustic impedance and Vp/Vs ratio for the hydrocarbon presence. The correction is done by gradually decreasing hydrocarbon saturation and estimating data point shift till convergence between the model and corrected data...

... geologist lwd saudi arabia government asia government logging while drilling geology suriname government upstream oil & gas correction drilling data acquisition porosity nmr porosity carbonate marie van steene log analysis real time system spwla-2023-0099 resolution enable...

...) estimating the lower conductivity limit based on Archie equation supposing that formation is gas saturated. (2) making some appropriate correction to avoid negative value and carefully selecting these raw signals with better s/n ratio. (3) building a layered initial model and forward modeling the theoretical...

...-0024 th annual logging symposium drilling fluids and materials well logging annual logging symposium logging symposium prediction geology gas injection method norway government log analysis identification methane dataset correction spwla 64th evaluation machine learning sm 3...

... eccentricity effects, it is not always possible to obtain formation shear slowness directly via conventional Slowness-Time-Coherence (STC) methods. Consequently, a dispersion correction is needed to quality control and/or correct the STC result. We propose a hybrid Slowness-Frequency-Coherence (SFC) method...

... is typically provided with limited bespoke calibration, correction, and verification of measurement. The reference depth is important as it is the basis for all subsurface activities, including well construction, well navigation, geological modelling, reservoir description, petrophysical analysis, fluid...

... precision and image quality. State-of-the-art characterization provides an accurate calibration and environmental correction for various borehole conditions. Close to the gamma ray sensors, there are four ultrasonic transducers that operate in a pulse-echo mode. These transducers provide travel-time...

... for the rare earth elements and heavy minerals. The objective of this study is to assess, quantify and then correct for the effect of these rare earth elements on the thermal neutron porosity measurement. Thermal and epithermal neutron porosity datasets were acquired in wells intersecting the Permo...

... 1 to C 3 ). In addition, they are raw data without recycling correction and extraction efficiency correction. Following the traditional geochemical analysis methods, some key parameters (C 1 /C 2 , C 1 /C 3 , Bernard ratio) have a universal threshold to distinguish gas and oil. The main reasons...

... flowline solubility schlumberger exploration conventional degasser spwla-2022-0008 raman spectroscopy spwla 63 spectroscopy degasser correction rd annual logging symposium SPWLA 63rd Annual Logging Symposium, June 10-15, 2022 DOI: 10.30632/SPWLA-2022-0008 KEY ROLE OF REGEARING MUD GAS LOGGING...

... are reasonably consistent across multiple wells. Manually correcting logs for consistency is laborious, subjective, and error prone. For some logs, such as gamma ray and neutron porosity, systematic inconsistencies or errors can be caused by borehole effects as well as miscalibration. Biased or consistently...

... and oil imbibition, NMR (Nuclear Magnetic Resonance), and SEM (Scanning Electron Microscope) imaging and image analysis allows an extension of that technique for the quantification of in situ pore fluid salinity, mineral hosted (water wet) and organic-matter hosted porosity (oil wet), and corrections...

... for correction is presented. The final results are analyzed and compared against open hole measurements, a very good consistency is achieved which demonstrates the correctness of the inversion algorithm. upstream oil & gas thickness formation density algorithm log analysis casing thickness...

... to calculate the self- spatial flux distribution of thermal neutrons in the shielding factor for the correction of the crack d formation due to the neutron self- characteristic gamma count from boron. The ratio shielding effect, which reduces the detection of characteristic gamma counts of iron is sensitivity...