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Keywords: imbibition
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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4043707-MS
... of imbibition rate, diffusion coefficient, pore connectivity and distribution were achieved from samples of drill cuttings and core plug across different rock units of Niobrara formation. The research consists of three methodologies which include laboratory experiments of pore structure characterization, gas...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4043929-MS
... resonance experiments. By conducting imbibition and nuclear magnetic resonance experiments on saturated cores, the imbibition degree of the oil phase is analyzed under varying imbibition time and porosity for different pore throat radii. A model for oil phase saturation distribution is developed considering...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4019112-MS
... development scco 2 urtec complex reservoir rock type flow in porous media chemical flooding methods pore imbibition geology mudrock shale gas efficiency enhanced recovery climate change wettability water-wet pore pore wettability immersion experiment sweeping efficiency saturation...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3864823-MS
... diffusivity through the cement matrix, a novel approach based on Nuclear Magnetic Resonance (NMR) is employed. Deuterium oxide (D 2 O) imbibition to replace H 2 O in cement plugs is monitored over time to derive tortuosity. Comparing pre- and post-CO 2 exposure D 2 O intrusion profiles allows us to determine...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3718137-MS
... frac spacing . The CFT model indicates oil in a pore system will not move until the bonding forces between the fluid phases and/or surface fields are exceeded, something that is not directly measurable at this time to this author's knowledge. Thirdly, imbibition, the spontaneous uptake of water...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3719323-MS
... imbibition is the main mechanism by which fracture fluid enters the rock. Herein we study the spontaneous imbibition of brine to determine the flow mechanism and uptake capability of fracturing fluid in unconventional source rocks. We used NMR spectroscopy and imaging methods to track the spatial...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3721559-MS
... Abstract Water imbibition and associated oil displacement is an important process in shale oil reservoirs after hydraulic fracturing and in water-based enhanced oil recovery. Current techniques for water imbibition measurement are mostly "black-box" type of methods. More explicit understanding...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5118-MS
... was doped with D2O, and another with toluene (Fig. 1(b NMR was again utilized to capture the time-lapse profile of the doping concentrations. D2O-doped and toluene-doped responses provided tortuosity of the water and the oil phases, respectively. URTeC 5118 Figure 1a. Workflow for single phase imbibition...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5299-MS
...URTeC: 5299 Water-Oil Displacement in Shale: New Insights from a Comparative Study Integrating Imbibition Tests and Multiscale Imaging Sheng Peng*1, Priyanka Periwal1, Robert M. Reed1 1. Bureau of Economic Geology, The University of Texas at Austin Copyright 2021, Unconventional Resources...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2454-MS
... Abstract Determination of dynamic fluid intrusion in tight oil reservoirs requires a very careful and precise estimation of changes in fluid volumes during spontaneous and forced imbibition. Because of the extremely low permeability of these mudrocks, only very small volumes of fluid can flow...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2600-MS
... to reduce uncertainty in reservoir simulation through determination of wettability of unconventional rocks with nanoDarcy permeabilities. Laboratory measurements of water spontaneous imbibition were made on oil-bearing unconventional core samples from the Permian Basin with nanoDarcy permeability. A Nuclear...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2560-MS
... will present a systematic investigation of gas-water relative permeability and hysteresis using a laboratory measurement technique developed through our previous work. A procedure of drainage and imbibition is adopted. After each step of drainage or imbibition, gas relative permeability was measured using...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2899-MS
... fracturing materials complex reservoir drag reduction enhanced recovery proppant fluid dynamics flow in porous media fracturing fluid experiment liang urtec 2899 wettability application liquid nanofluid brine imbibition surfactant lnf hydraulic fracturing upstream oil...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-3158-MS
... completion fluid chemistry upstream oil & gas pore system plug oil permeability injection permeability complex reservoir shale reservoir imbibition surfactant gas mixture completion fluid Abstract Techniques such as horizontal drilling and hydraulic fracturing have helped...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-3323-MS
... imbibition effect experiment urtec 3323 matrix water saturation contact angle pressure gradient mass balance equation fluid dynamics relative permeability imbibition hydraulic fracture permeability Abstract A large amount of fracturing fluid in fracking is imbibed into the shale fracture...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-3096-MS
... Abstract Water imbibition is an important process influencing early oil production after hydraulic fracturing of shale reservoirs. A major fraction of the injected fracturing fluid remains in the formation; however, where the unrecovered fracturing fluid resides and how it displaces the oil...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2726-MS
...-displacing-water and water-displacing-oil imbibition to provide a new diagnostic SCAL method: robust and non-destructive time-lapse wettability measurements for tight rocks. This work shows wettability results from two prolific North American UR plays and covers several key unconventional rock types...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-1069-MS
... limestone cores by water imbibition at 347 K. Results of the contact-angle experiment show that the contact angle was rapidly reduced to 26° with 3pRB, in contrast to the contact angle of 123° with RB, without affecting the oil/brine IFT. Spontaneous imbibition results show that the oil recovery factor...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-1117-MS
... and fluid systems by changing the interfacial tension which results in releasing hydrocarbons from the rock. In this study, enzyme solutions with concentrations of 10 and 5 wt.% are used on 6 different cores. Recovery factors of the spontaneous imbibition tests at this concentration were 11 and 22...

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