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Keywords: permeability
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Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200319-MS
... Abstract Matrix acidizing is a widely-used stimulation treatment performed below the fracture pressure of the formation. The purpose of acidizing is to improve or restore the formation permeability through rock dissolution. Natural fractures exist in approximately 50% of carbonate reservoirs...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200395-MS
.... We create two reservoir models that vary in permeability and in fracture surface-area-to-volume ratio as base cases for numerical studies. We run all the cases using a commercial black-oil simulator. One of the base models is built to represent low permeability (microdarcy) reservoir, and the other...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200330-MS
... is the relative permeability of phase j, μ j is the viscosity of phase j , K is the absolute permeability diagonal tensor, P j is the pressure of phase j, γ j is the specific gravity of phase j, D is the reservoir depth, ϕ denotes the reservoir porosity, S j is the saturation of phase j , D...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200367-MS
... reservoir simulation pore system core analysis flow in porous media carbonate reservoir porosity centrifuge data core sample society of petroleum engineers pore throat radius centrifuge test forbes permeability variation mineralogy mineral qemscan dataset centrifuge experiment capillary...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200404-MS
... medium permeability rocks (200-500 mD). In the absence of oxygen and glutaraldehyde, the Scleroglucan solution prepared in synthetic seawater, maintained its viscosity at 100 °C for at least two months. In the presence of a biocide, glutaraldehyde, the biopolymer degraded at 100 °C. Transport...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200374-MS
... of statistical variation of static properties, such as porosity and permeability. Lorenz coefficient and Dykstra-Parsons coefficient are two such measures of reservoir heterogeneity that account for these static effects. These measures are considered simplistic because the spatial distribution and arrangement...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200322-MS
... permeability curves simulated digitally. Porosity and relative permeability end points were also measured on preserved STACK core plugs. Minimum miscibility pressure (MMP) measurements of field separator gas and STACK crude oil was performed with a rising bubble apparatus (RBA). Finally, a huff-n-puff...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200379-MS
... Abstract Simulation of gas huff-n-puff (HnP) in core models is often simplified by assuming homogenous, isotropic models, which are not representative of fine-grained multi-component shales with multiple types of pore space and anisotropic permeability. According to the previous literaturte...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200342-MS
... compositional simulator to forecast gas injection improved oil recovery (IOR) in shale. We also use the updated gas saturations in the multi-scale PVT model to modify the relative permeability tables used in the compositional simulation. We predict significantly higher gas production and lower oil production...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200375-MS
... and predicts a smaller oil recovery than in the field. This suggests that both the nanoparticles and gas play an important role in increasing the relative permeability to oil and improving oil recovery. Results from the sensitivity study show that larger injection volumes of nanoparticles and gas result...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200419-MS
... 1927 to 1979 and Taber [ 5 ] summarized 17 correlating groups reported before 1979. The main difference between these capillary numbers is that some include the porosity while others include the relative permeability, or use different models to represent the absolutely permeability. For instance...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200309-MS
... transient analysis (PTA) allowed for (1) skin to be measured before and after polymer injection to evaluate sand face plugging, and (2) permeability measurements that were used for direct field measurement of residual resistance factor. Conclusions from the injectivity test in the Adena field...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200398-MS
... geological cross section reservoir permeability production profile lobe cross section Figure 2 Structural cross sections along the Tinsley fault blocks. 1) A-A` arbitrary cross section of selected wells from the NFB and WFB. The cross section shows that Woodruff reservoir is not differentiated...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200345-MS
... permeability of 1 nd. The results are shown in Fig. 5 . There are obvious differences in both BHP and pressure derivative within the period of 0.001 ~ 1580 days. The artificial fracture to matrix transition often observed in DP methods are absent in the more realistic DFN. Abstract Pilot tests...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200362-MS
... conductivity fraction reservoir co 2 mole fraction fracture permeability Rapid production decline and low ultimate oil recovery from unconventional oil reservoirs are the most important challenges associated with development of such resources. The ultimate oil recovery from typical tight oil...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200421-MS
... Leverett (1939) and Richardson (1957) investigated oils up to 100 cp and did not find any significant change in relative permeabilities. Yuster (1951) and Odeh (1959) were the first to propose the viscosity dependence of relative permeability curves. Using simplified capillary bundle...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200470-MS
... of the core plug and size distribution of the particles formed in a microemulsion (ME) solution. We also investigate the effects of S wi on effective oil permeability (k o eff ) after the flowback process. The results of leak-off and flowback tests using tap water as the base case shows that k o eff...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200429-MS
... the asphaltene impact in a major oil field in GoM. The goals of the study were to: a) Define the Asphaltene Precipitation Envelope (APE) using blends of reservoir fluid and injection gas, and b) Measure permeability reduction due to asphaltene precipitation in a core under gas injection. To properly analyze GI...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200438-MS
... Abstract Accurately modeling three-phase relative permeability remains a great challenge to reservoir engineers, in part because of a lack of experimental data to use when verifying model results. This is especially true when the fluids are changing composition, such as for miscible gas...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200469-MS
... Abstract Changqing Oilfield is the largest petroleum-producing field in China and one-third of its oil production is attributed to the formations with permeability lower than 1 mD. The rapid oil rate decline and low recovery factor (RF) associated with those formations require additional IOR...

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