...SPWLA 65th Annual Logging Symposium, May 18-22, 2024 DOI: 10.30632/SPWLA-2024-0104 UNLOCKING RESERVOIR POTENTIAL: STRATEGIC ROLE OF SATURATION LOGS IN CASED HOLE FOR WATERFLOODING OPTIMIZATION Patricio Zamora, Paul Cornejo, Luis Paredes, Sergio Mata, Ken Luzuriaga, Israel Reyes, Pablo Cisneros...

... ABSTRACT Marlim Field, offshore Brazil, has been a significant oil producer for decades. Over time, drilling techniques in the field have evolved, with horizontal wells becoming a focal point. The application of reservoir mapping-while-drilling technology has been particularly transformative...

... 2 cutoffs. The choice of similarity metric is based on its ability to cluster laboratory samples in a manner consistent with a rock typing approach informed by petrography and reservoir quality. We applied this methodology to derive variable T 2 cutoff curves, encompassing most probable, P10...

... clastic rock mudrock sedimentary rock reservoir geologist complex reservoir shale gas well logging reservoir characterization reservoir geomechanics saturation th annual logging symposium spwla 65 prediction shale reservoir gulf sandstone mudstone swt resistivity substitution...

... in Rio de Janeiro, Brazil, May 18-22, 2024. ABSTRACT The Thomas-Stieber method has been widely used to evaluate thin-bedded clastic reservoirs by accounting for the distribution of clay minerals within the rock matrix. In such reservoirs, clay content has a profound impact on porosity and, consequently...

... geologist salinity accuracy mineral log analysis geology well logging th annual logging symposium rock type calculation information reservoir conversion coefficient anp gamma spectra spwla-2024-0139 spwla 65 proportion elemental spectroscopy gamma spectrum SPWLA 65th Annual...

... sedimentary rock geologist reservoir geology complex reservoir clastic rock hydraulic fracturing well logging production logging log analysis production control reservoir characterization spwla-2024-0005 operation unconventional reservoir th annual logging symposium spwla 65...

... ABSTRACT Well-placement techniques have been evolving in recent years to improve reservoir exposure and optimize well placement. While the traditional reactive geosteering methodology in thin reservoirs has improved reservoir exposure, it cannot anticipate sudden dip changes and potential...

... ABSTRACT Logging-while-drilling (LWD) ultra-deep azimuthal resistivity (UDAR) tools became an essential part of well placement technology because they are deep enough to explore the reservoir as a whole and map it in a similar scale with seismic sections. Due to the large formation volume...

... of the pulsed-neutron tool are often reconcilable and may carry additional information about the state of the well or reservoir. With respect to verification of containment, depending on well configuration, it may be possible to differentiate between CO 2 in the formation and CO 2 in the annulus...

... ABSTRACT The sandy conglomerate reservoir has a wide distribution in Bahai Bay Basin, which has become one of the most important exploration targets. However, characterization of reservoir connectivity is quite difficult due to strong reservoir heterogeneity and complex logging responses...

...SPWLA 64th Annual Logging Symposium, June 10-14, 2023 DOI: 10.30632/SPWLA-2023-0014 CHARACTERIZING DEEP BURIED BASEMENT METAMORPHIC CONDENSATE GAS RESERVOIR BY IMAGE LOGS, SPECTROSCOPY LOGS AND CORE DATA, BOHAI BAY BASIN, EASTERN CHINA Guoqiang Zhang, CNOOC-CCLT Ltd., Bo Liu, Tom Bradley, Baker...

... ABSTRACT Breidablikk is a green field on the Norwegian Continental Shelf and just started the pre-production drilling of 23 wells in two structures. We have two reservoir fluid samples from exploration wells in each structure with relatively high viscosity of 4 cP and 8 cP, respectively...

... resonance (NMR), FS is used to eliminate the hydrocarbon (HC) contribution from T 1 and T 2 distributions and thus to establish the pure response of a water-filled rock. In 2015, Christensen et al. presented the first study conducting successful FS for a chalk reservoir. Based on theoretic...

... selection and formulation experiment spwla-2023-0113 reservoir ABSTRACT The evaluation of drilling fluid damage to reservoir is an important work for reservoir protection and oil and gas exploitation. This paper discusses the damage degree of drilling fluid to tight sandstone gas reservoir...

.... In this paper, the authors will review the use of UDAR in Equinor the last decade and highlight both successful use and real-time challenges related to interpretation of the inversion results. UDAR-technology and inversion algorithms have been very powerful for reservoir mapping to geosteer or geostop according...

... interpretation method of log data is based on petrophysical mechanisms and models, many assumptions are needed, which may lead to deviations in practical application. Therefore, it is of great significance to achieve reservoir fluid identification when using machine learning processing and interpreting log data...

... effects can artificially increase water saturation (Sw) estimations by 20 saturation units (s.u.) in the Barik reservoir, resulting in pessimistic estimates of hydrocarbon pore volume if no corrections are applied. The Barik sandstone reservoir, which is characterized by low porosity (up to 14pu), low...

... and future wells. Advancement in tool design and inversion algorithms has allowed mapping the reservoir in 3D and exploring the sensitivity of these tools ahead of the measure point to provide look ahead warning of resistivity boundaries. Improvements in the technology over the decade have changed the way...

... if the as-acquired deep resistivity is used in volumetric calculations. Overbalanced drilling causes deep invasion of waterbased mud (WBM) filtrate into porous and permeable rocks, leading to radial displacement of in-situ saturating fluids away from the wellbore. In low-porosity reservoirs drilled with WBM...