The mutual effects of injected fluid and rock during imbibition in the process of low and high salinity carbonated water injection into carbonate oil reservoirs

Nowrouzi, Iman; Manshad, Abbas Khaksar; Mohammadi, Amir H.

doi:10.1016/j.molliq.2019.112432

Cited by 30 publications

(17 citation statements)

References 36 publications

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“…42 Finally, the lower salinity water has a smaller contact angle compared to the higher salinity water. 18,159 It is noted that salinity and other materials added have a coupling effect on the imbibition recovery. For example, a study by Strand et al showed that, when there is a surfactant with the same concentration to alter the wettability of a rock, the imbibition recovery and its rate decrease as salinity increases for chalk cores.…”

Section: Eor By Imbibition In Reservoir Developmentmentioning

confidence: 99%

“…Third, the ionic strength decreases and electrical double layers swell with a decrease in salinity, and thus, the oil on a rock surface desorbs . Finally, the lower salinity water has a smaller contact angle compared to the higher salinity water. , …”

Section: Eor By Imbibition In Reservoir Developmentmentioning

confidence: 99%

“…Currently, the effect of viscosity in a nanoconfinement system on the imbibition process is rarely studied. ,− Many reservoirs have initial water saturation or connate water saturation, but many laboratory imbibition experiments ignored its effect. The temperature and pressure in reservoirs are different from the normal temperature and pressure, but many laboratory imbibition experiments were conducted at the normal temperature and pressure; therefore, it is very necessary to study the effects of the temperature and pressure on imbibition. − …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Critical Review of Enhanced Oil Recovery by Imbibition: Theory and Practice

Tian

Gao

et al. 2021

Energy Fuels

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Imbibition is very common, occurring in life, material, chemistry, and energy. It plays an important role in enhanced oil recovery (EOR). The development of many reservoirs is beneficial to the imbibition process, such as fractured reservoirs, conventional reservoirs developed by a water-injection mode of huff-n-puff in their later development, and unconventional reservoirs with abundant micro–nanopores developed by the fracturing technology. Here, we present a critical review of EOR through imbibition. First, the mechanisms of EOR through imbibition are reviewed, including the mechanical analysis of imbibition in a capillary, imbibition models for rocks, and the scaling law. Then, the governing factors of EOR by imbibition are summarized, including the properties of rocks and fluids and the effects of the temperature and pressure. Besides, the EOR by imbibition in the oil and gas development is discussed, including the roles of surfactants, nanofluids, salinity, shut-in time, and injection/production rates. Finally, conclusions and outlooks are presented. This review provides systematic and recent insights about EOR by imbibition and a direction for future research on this topic, which can help for a better understanding of EOR by imbibition.

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Section: Eor By Imbibition In Reservoir Developmentmentioning

confidence: 99%

Section: Eor By Imbibition In Reservoir Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Critical Review of Enhanced Oil Recovery by Imbibition: Theory and Practice

Tian

Gao

et al. 2021

Energy Fuels

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“…Most studies indicate that core flooding with carbonated water leads to higher permeabilities, sometimes by creating a wormhole at and near the core entrance. For example, Nowrouzi et al (2020) and Seyyedi et al (2020) observed higher porosity and permeability values after injection. However, Drexler et al (2019) noted a reduction in weight, porosity, pore volume and permeability of the sample after injecting carbonated water (desulphated seawater saturated with CO2), while Abbaszadeh et al (2016) reported a reduction in porosity and the sample's weight, but an increase in the permeability.…”

Section: Introductionmentioning

confidence: 98%

Effects of carbonated water injection on the pore system of a carbonate rock (coquina)

Silveira

Hoerlle

Rocha

et al. 2022

Journal of Hydrology and Hydromechanics

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CO2 injection is a well-known Enhanced Oil Recovery (EOR) technique that has been used for years to improve oil extraction from carbonate rock and other oil reservoirs. Optimal functioning of CO2 injection requires a thorough understanding of how this method affects the petrophysical properties of the rocks. We evaluated pore-scale changes in these properties, notably porosity and absolute permeability, following injection of CO2-saturated water in two coquina outcrop samples from the Morro do Chaves Formation in Brazil. The coquinas are close analogues of Pre-salt oil reservoirs off the coast of southern Brazil. The effects of carbonated water injection were evaluated using a series of experimental and numerical steps before and after coreflooding: cleaning, basic petrophysics, microtomography (microCT) imaging, nuclear magnetic resonance (NMR) analyses, and pore network modeling (PNM). Our study was motivated by an earlier experiment which did not show the development of a wormhole in the center of the sample, with a concomitant increase in permeability of the coquina as often noted in the literature. We instead observed a substantial decrease in the absolute permeability (between 71 and 77%), but with little effect on the porosity and no wormhole formation. While all tests were carried out on both samples, here we present a comprehensive analysis for one of the samples to illustrate changes at the pore network level. Different techniques were used for the pore-scale analyses, including pore network modeling using PoreStudio, and software developed by the authors to enable a statistical analysis of the pore network. Results provided much insight in how injected carbonated water affects the pore network of carbonate rocks.

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“…In this part, we experimentally investigated the effect of active carbonated water injection (which was made by CTAB as surfactant agent) and active carbonated water alternating gas injection (a mixture of water alternating gas injection and carbonated water which is made by CTAB. The rock-injected fluid interactions was one of the main features of carbonated water injection that caused to wettability alteration 20 – 22 . Therefore, it is necessary to perform each test individually and compare the results of each test together to select the optimum injectivity scenario.…”

Section: Resultsmentioning

confidence: 99%

An experimental study to measure oil recovery factor by chemical agents and carbon dioxide after waterflooding

Yang

Bai

Song

et al. 2022

Sci Rep

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Development of tight formations would be one of the main priority for petroleum industries due to the enormous demand to the fossil fuels in various industries. In this paper, we provided a set of experiments on the generated foams by carbon dioxide (CO2) and nitrogen (N2), cyclic CO2 injection, water alternating gas injection (WAG), active carbonated water injection (coupling surfactant effects and carbonated water (CW)), and introducing the impact of active carbonated water alternating gas injection (combination of WAG and CW injection) after waterflooding. Carbon dioxide is more feasible than nitrogen, it can be mobilize more in the pore throats and provided higher oil recovery factor. Generated foam with CO2 has increased oil recovery factor about 32% while it’s about 28% for generated foam by N2. Moreover, according to the results of this study, the maximum oil recovery factor for active carbonated water alternating gas injection, active carbonated water injection, and water alternating gas injection measured 74%, 65%, and 48% respectively.

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The mutual effects of injected fluid and rock during imbibition in the process of low and high salinity carbonated water injection into carbonate oil reservoirs

Cited by 30 publications

References 36 publications

A Critical Review of Enhanced Oil Recovery by Imbibition: Theory and Practice

A Critical Review of Enhanced Oil Recovery by Imbibition: Theory and Practice

Effects of carbonated water injection on the pore system of a carbonate rock (coquina)

An experimental study to measure oil recovery factor by chemical agents and carbon dioxide after waterflooding

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