... textures have great complexity, due to many possibilities of pore allocation, resulted from the interrelation of different geological processes (depositional and diagenetic), on specific timings and intensities. Beyond quantification, the whole characterization of the porosity on carbonates needs...

... ABSTRACT Depleted gas reservoirs often have complex geometries with varying porosity and permeability distributions. Quantifying CO 2 diffusion in such heterogeneous reservoirs remains challenging, especially when considering the interactions between CO 2 and different rock types and pore...

... geology europe government enhanced recovery spwla 64 saturation plug heterogeneity sensitivity experiment chalk porosity grader spwla-2023-0028 pore university halliburton micp SPWLA 64th Annual Logging Symposium, June 10-14, 2023 DOI: 10.30632/SPWLA-2023-0028 INTEGRATED PHYSICAL...

... ABSTRACT Pore structure characterization has always been challenging, especially in carbonate rocks. Acoustic and nuclear magnetic resonance (NMR) measurements have been employed to characterize different aspects of pore geometry. In this study, we combine both for an improved and quantitative...

...SPWLA 64th Annual Logging Symposium, June 10-14, 2023 DOI: 10.30632/SPWLA-2023-0110 A NEW WORKFLOW FOR ASSESSMENT OF FLUID COMPONENTS AND PORE VOLUMES FROM 2D NMR MEASUREMENTS IN FORMATIONS WITH COMPLEX MINERALOGY AND PORE STRUCTURE Artur Posenato Garcia, Robert Mallan, and Boqin Sun, Chevron...

... of pore structures, among which intergranular pores are the most damaged (70.92 %), followed by feldspar dissolution pores (44.97 %), and kaolinite intercrystalline pores are the least damaged (33.57 %). Under the condition of HTHP, during the drilling cycle, the solid phase particles in the drilling...

... to numerous factors, including variable formation water salinities, complex lithologies, thin-bedded formations, and presence of organic and inorganic pore systems. Additionally, the accuracy of interpretation models is constrained by the limitations associated with available laboratory measurements. In tight...

... between NMR relaxation time such as T2 and formation pore-size distribution, assuming the reservoir being fully saturated by the wetting fluid within the tools sensitive volume. NMR fluid substitution (FS) methods, which eliminate the effect of non-wetting fluids from NMR data acquired in partially...

... information about oil and gas wells. Deriving porosity of drill cuttings via NMR T 2 -pore size distribution can be significantly influenced by surface fluid on the cuttings, acquired either during saturation of the cuttings in the lab or from cutting fluid at the well site, which can easily...

... level with = 12 + 2, = 12 + 2 (1) no requirement for Swi and Sor T2 spectra as input. 1 1 Another major advantage is its use of complete T2 spectra rather than a single relaxation rate (usually T2 log H describes the fraction of pores occupied by water and mean or T2 harmonic mean) for NWI calculations...

...SPWLA 61st Annual Logging Symposium, June 24 to July 29, 2020 1 PORE STRUCTURE CHARACTERIZATION OF A COMPLEX CARBONATE RESERVOIR IN SOUTH IRAQ, USING ADVANCED INTERPRETATION OF NMR LOGS Milad Saidian, BP, Vikas Jain, SLB, and Ibrahim Milad, BP Copyright 2020, held jointly by the Society...

... ABSTRACT Water saturation is a key reservoir property, which is usually calculated from resistivity logs with Archie's equations. Due to a variety of pore types and complex pore spaces, understanding the electrical properties of carbonate formations is of great challenging. Conventionally...

... well logging dodecane relaxation region reservoir characterization shale gas step pressurization pore log analysis upstream oil & gas nmr response enhanced recovery complex reservoir brine dry state pressurization spwla 61 oil wet pore specimen wettability counter...

... from method of imaging, availability of calibration libraries, transition space error, and its quantification. In this paper, we look at a number of CT and micro CT images from carbonate formations - exhibiting range of heterogeneity - to understand the detectability of pore volume, the transition...

... Upstream Oil & Gas water saturation hydrogen index wireline tool well logging pore psdf method hydrocarbon log analysis lwd distribution pore-size-dependent fluid substitution LWD tool fluid substitution porosity Symposium Magenta hydrocarbon phase permeability University...

... ABSTRACT We introduce a workflow to calculate capillary pressure curves from NMR transverse relaxation time ( T 2 ) distributions of partially hydrocarbon-saturated measurements. First, we develop a pore-size-dependent fluid-substitution (PSDFS) joint inversion method to correct T 2...

...SPWLA 59 th Annual Logging Symposium, June 2-6, 2018 1 ROBUST MACROPOROUS DOLOMITE PORE TYPING AND QUANTIFICATION WITH LWD T1 OR WIRELINE T2,INTRINSIC LOGS 1 Wei Shao, 1 Songhua Chen, 1 Mahmoud Eid, and 2 Gabor Hursan 1.Halliburton and 2.Saudi Aramco Copyright 2018, held jointly by the Society...

... ABSTRACT Variable depositional cycles and severe diagenesis are among the main contributing factors to the complex pore network encountered in formations such as carbonates. This complexity is often not taken into account reliably in conventional models for permeability assessment...

...-wet organic pores to fluids (oil and water) in the mixed-wet inorganic pores and natural fractures is measured by this methodology to determine the fluid types and their confining environments for the construction of universal 2D maps of different wells. One of the biggest challenges for the universal...

...SPWLA 58th Annual Logging Symposium, June 17-21, 2017 1 ALTERATIONS IN PORE TOPOLOGY OF ORGANIC-RICH SHALE SAMPLES DUE TO THE REMOVAL OF DEAD OIL, BITUMEN, AND KEROGEN Shiv Prakash Ojha, Siddharth Misra, Ali Tinni, Ankita Sinha, Son Dang, Carl Sondergeld, Chandra Rai The University of Oklahoma...