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Keywords: water saturation
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 16–18, 2023
Paper Number: SPE-214958-MS
... Abstract Low resistivity pay is a perennial challenge in clastic intervals of the Third Bone Spring formation in the Permian Basin. Water saturations from resistivity are high, and it is difficult to identify productive intervals or to assess oil in place. We show that the primary cause is thin...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205883-MS
... significantly higher numbers (14-18%). Gupta et al. (2020) in an attempt to remedy the situation extended the kr ow and kr og curves all the way to (S w ,S g ) ≤ 1but discovered that in presence of water saturation near Sw i (irreducible water saturation), use of Stone-II formula for oil relative...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205928-MS
... considers the change of resistivity while ignores the variation of litho-electrical parameters with mixture water salinity. It will further deteriorate the precision of iteration method and will not suffice the need of evaluating water saturation of low resistivity pay after water flooding. In summary...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205950-MS
... a petrophysics use case on an unconventional land dataset to predict the petrophysical properties such as water saturation, total porosity, volume of clay, and total organic carbon from petrophysics logs. Then, we consider a geomechanics use case on a conventional offshore dataset to predict the lithology, pore...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206361-MS
... with a dimensionless interpolation factor FM, which is a mobility reduction factor varying between FM = 1 (no foam) and FM ≅ 0 (strongest foam). Out of several dependencies, again for simplicity and conceptual understanding, only two dependencies, surfactant concentration and water saturation were considered. (1...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201618-MS
... cycles is summarized in Figure 3 . After saturating rock samples with a synthetic reservoir, crude oil was injected into rock samples at 0.02 cc/min to establish initial water saturation. The carbonate rock was then flooded with synthetic high salinity water, TailoredWater 1, and TailoredWater 2...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201608-MS
... is often challenging. Some of the major challenges during reservoir simulation are uncertainties in water saturation, permeability, phase behavior, and effective fracture surface area during production. This paper discusses how fit-for-purpose core measurements help reduce the uncertainty...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201651-MS
... To summarize, in this study the shale gas production period is divided into two stages based on the critical water saturation. At both two stages, the Langmuir-type gas adsorption isotherm is modified by incorporating water content. The BET model is adopted to describe the water adsorption...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201417-MS
... zone thickness is about 270 feet, the average porosity ranges from 4% in the Bahi/Gargaf sandstone to 13% in the Waha limestone. The average water saturation ranges from 15% to 32% in the Waha limestone and the Bahi/Gargaf sandstone respectively. Geostatistical models were developed using the well log...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201429-MS
... This means that due to viscous fingering, the ‘observed’ residual oil saturation in the gridblock is larger than the intrinsic residual oil saturation. Therefore, the residual oil saturation needs to be modified during a coarse grid reservoir simulation. Accordingly, the water saturation...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201464-MS
... shale gas flow in porous media reservoir surveillance hydraulic fracturing production control production logging reservoir simulation drillstem/well testing water saturation production data fracture closure jet-pump installation drilling operation fluid dynamics oil production drive...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201479-MS
... viscosity of fracturing fluid corresponds to longer soaking time, while increasing water-shale interfacial tension reduces the optimum soaking time. The effect of different initial water saturations on optimum soaking time was found to be insignificant. If real time shut-in pressure data are used...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201548-MS
... appropriate than others to estimate permeability of rock at fully water saturated conditions (see Logan et al. 1998 , Allen et al. 2001 , and Hassall et al. 2004 ). On the contrary, knowing the downhole gas relative permeability endpoint has been an open question until now. In the present study, we suggest...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195804-MS
... are given in Fig. 1 Data Analytics In this study, core and petrophysical well logs dataset was used for the prediction of water saturatiom. METHODOLOGY This study explores the comparative performance of state-of-the-art and conventional AI techniques in the prediction of water saturation...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195853-MS
... the process of simulating oil displacement in the formation of oil and gas reservoirs. Therefore, using the measured capillary pressure data to study the important parameters such as pore throat distribution and water saturation of rock samples both have a high degree of conformity with the actual situation...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196000-MS
... is Archie's equation ( Archie 1942 ), which describes the correlation between specific electrical resistivities, porosity, water saturation and empirical parameters. However, this interpretation needs some modification. Although formation evaluation fitted to shale reservoirs have progressively improved...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195988-MS
... During the interpretation of well logs three different types of cut-offs were investigated respectively with regards to a shale volume of 50%, porosity 8%, 1MD permeability, and water saturation of 65%. The porosity cut-off was based on the cross plots of core porosity-permeability...

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