Temperature-Dependent Relative Permeability and Its Effect on Oil Displacement by Thermal Methods

Nakornthap, K.; Evans, R.D.

doi:10.2118/11217-pa

Cited by 49 publications

(34 citation statements)

References 18 publications

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“…The absolute permeability was reduced by almost 50% in all cases as shown in Table 5, where the temperature increased to 130°C. This is in agreement with the statement by Nakornthap and Evans [19], that Cassé and Ramey [25], Weinbrandt et al [26], and Gray et al [27] found that absolute permeability decreases with temperature. Sedaee Sola et al [28] reported that limestone showed a more oil-wet (as indicated by a shift of the relative permeability curves) behavior when temperature increased to …”

Section: Mutual Solubility Datasupporting

confidence: 92%

“…In general from this work and the work done by Nakornthap and Evans [19], it may be concluded that use of room temperature relative permeability underestimates the oil recovery rate and ultimate recovery. It may, also, be concluded that not only the injected fluid temperature that affect the recovery rate and ultimate recovered oil but also temperature difference between the injected fluid and the reservoir temperature.…”

Section: Oil Recovery Sensitivity To Different Temperature Relative Pmentioning

confidence: 52%

“…The above simulation and discussion does not address the wettability change to more oil-wet, hence reduced oil recovery at 130°C. In order to approximate the relative permeability as a function of temperature, Nakornthap and Evans' equations [19] (i.e. equations 3 and 4) are used.…”

Section: Oil Recovery Sensitivity To Different Temperature Relative Pmentioning

confidence: 99%

“…In other words, the dependence of k ro and k rw trend with temperature is governed not only by S wir , but also λ, as shown by the equations. Nakornthap and Evans [19] used a fixed value of 2 for λ in their analysis. Again, no explanation is made so far to the observed increase of oil-wet status of the chalk with temperature.…”

Section: Oil Recovery Sensitivity To Different Temperature Relative Pmentioning

confidence: 99%

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Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Hamouda

Karoussi

2008

Energies

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It is customary, for convenience, to use relative permeability data produced at room temperature. This paper shows that this practice underestimates oil recovery rates and ultimate recovery from chalk rocks for high temperature reservoirs. Above a certain temperature (80°C in this work) a reduction of oil recovery was observed. The reduction in oil recovery is reflected by the shift of relative permeability data towards more oil-wet at high temperature (tested here 130°C). However, both IFT and contact angle measurements indicate an increase in water wetness as temperature increases, which contradict the results obtained by relative permeability experiments. This phenomenon may be explained based on the total interaction potential, which basically consists of van der Waals attractive and short-range Born repulsive and double layer electrostatic forces. The fluid/rock interactions is shown to be dominated by the repulsive forces above 80°C, hence increase fine detachment enhancing oil trapping. In other words the indicated oil wetness by relative permeability is misleading.

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Section: Mutual Solubility Datasupporting

confidence: 92%

Section: Oil Recovery Sensitivity To Different Temperature Relative Pmentioning

confidence: 52%

Section: Oil Recovery Sensitivity To Different Temperature Relative Pmentioning

confidence: 99%

Section: Oil Recovery Sensitivity To Different Temperature Relative Pmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Hamouda

Karoussi

2008

Energies

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“…Early thermal modeling suggested that temperature dependence of relative permeability must be incorporated into the model to reproduce experimental results (Coats et al, 1974). Review of the early literature on the effects of temperature on relative permeability suggests the following (Nakornthap and Evans, 1986): ! Relative permeability can be expressed in terms of water saturation and irreducible water saturation.…”

Section: Modelingmentioning

confidence: 99%

Crowtm Process Application for Sites Contaminated With Light Non-Aqueous Phase Liquids and Chlorinated Hydrocarbons

Johnson¹

2003

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Western Research Institute (WRI) has successfully applied the CROW TM (Contained Recovery of Oily Wastes) process at two former manufactured gas plants (MGPs), and a large wood treatment site. The three CROW process applications have all occurred at sites contaminated with coal tars or fuel oil and pentachlorophenol (PCP) mixtures, which are generally denser than water and are classified as dense non-aqueous phase liquids (DNAPLs). While these types of sites are abundant, there are also many sites contaminated with gasoline, diesel fuel, or fuel oil, which are lighter than water and lie on top of an aquifer.A third site type occurs where chlorinated hydrocarbons have contaminated the aquifer. Unlike the DNAPLs found at MGP and wood treatment sites, chlorinated hydrocarbons are approximately one and a half times more dense than water and have fairly low viscosities. These contaminants tend to accumulate very rapidly at the bottom of an aquifer. Trichloroethylene (TCE) and perchloroethylene, or tetrachloroethylene (PCE), are the major industrial chlorinated solvents that have been found contaminating soils and aquifers.The objective of this program was to demonstrate the effectiveness of applying the CROW process to sites contaminated with light non-aqueous phase liquids (LNAPLs) and chlorinated hydrocarbons. Individual objectives were to determine a range of operating conditions necessary to optimize LNAPL and chlorinated hydrocarbon recovery, to conduct numerical simulations to match the laboratory experiments and determine field-scale recoveries, and determine if chemical addition will increase the process efficiency for LNAPLs.The testing consisted of twelve TCE tests; eight tests with PCE, diesel, and wood treatment waste; and four tests with a fuel oil-diesel blend. Testing was conducted with both vertical and horizontal orientations and with ambient to 211 °F (99 °C) water or steam. Residual saturations for the horizontal tests ranged from 23.6% PV to 0.3% PV. Also conducted was screening of 13 chemicals to determine their relative effectiveness and the selection of three chemicals for further testing.iv

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Microscopic Mechanism of Multiphase Fluids Flowing Through Rocks

2016

Springer Mineralogy

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Temperature-Dependent Relative Permeability and Its Effect on Oil Displacement by Thermal Methods

Cited by 49 publications

References 18 publications

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Crowtm Process Application for Sites Contaminated With Light Non-Aqueous Phase Liquids and Chlorinated Hydrocarbons

Microscopic Mechanism of Multiphase Fluids Flowing Through Rocks

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