On the Transport Properties of a Rod-Type Polymer in Sand Packs

Domselaar, H.R. van; Fortmuller, Claudia

doi:10.2118/25073-ms

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…In reservoir cores at residual oil saturation (ROS), Vela et al (1976) found HPAM (Dow Pusher 700) retention values increased from approximately 12 lg/g in 137-md sandstone to approximately 130 lg/g in 12-md sandstone. Along with this increase in polymer retention, resistance factors and residual resistance factors increased by factors from 13 to 20.…”

Section: Literature Review Of Factors Affecting Polymer Retentionmentioning

confidence: 99%

Field vs. Laboratory Polymer-Retention Values for a Polymer Flood in the Tambaredjo Field

Manichand

Seright

2014

SPE Reservoir Evaluation &Amp; Engineering

125

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During a polymer flood, polymer retention can have a major impact on the rate of polymer propagation through a reservoir, and consequently on oil recovery. A review of the polymer-retention literature revealed that iron and high-surface-area minerals (e.g., clays) dominate polymer-retention measurements in permeable rock and sand (>100 md). A review of the literature on inaccessible pore volume (IAPV) revealed inconsistent and unexplained behavior. A conservative approach to design of a polymer flood in high-permeability (>1 darcy) sands would assume that IAPV is zero. Laboratory measurements using fluids and sands associated with the Sarah Maria polymer flood in Suriname suggested polymer retention and IAPV values near zero [0620 lg/g for retention and 0610% pore volume (PV) for IAPV]. A procedure was developed using salinity-tracer and polymer concentrations from production wells to estimate polymer retention during the Sarah Maria polymer flood in the Tambaredjo reservoir. Field calculations indicated much higher polymer-retention values than those from laboratory tests, typically ranging from approximately 50 to 250 lg/g. Field cores necessarily represent an extremely small fraction of the reservoir. Because of the importance of polymer retention, there is considerable value in deriving polymer retention from field results, so that information can be used in the design of project expansions.

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Section: Literature Review Of Factors Affecting Polymer Retentionmentioning

confidence: 99%

Field vs. Laboratory Polymer-Retention Values for a Polymer Flood in the Tambaredjo Field

Manichand

Seright

2014

SPE Reservoir Evaluation &Amp; Engineering

125

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“…The apparent viscosity of each solution was estimated using Darcy's law and a measure of the polymer flow rate through the medium at each hydraulic gradient (Table ). This method has been described in the literature by previous researchers ( − ).…”

Section: Resultsmentioning

confidence: 99%

Effects of Capillary Pressure and Use of Polymer Solutions on Dense, Non-Aqueous-Phase Liquid Retention and Mobilization in a Rough-Walled Fracture

Longino

Kueper

1999

Environ. Sci. Technol.

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In this laboratory study, perchloroethylene (PCE) was permitted to migrate through a horizontal rough-walled limestone fracture under controlled conditions to assess fracture retention capacity. Retention of immiscible-phase PCE in the absence of an applied wetting-phase hydraulic gradient varied between 11% and 26% of the fracture volume. A portion of this residual could be removed through water flooding; however, even at the maximum applied hydraulic gradient of 1.0, residual PCE remained in the fracture. The observed correlation of reduced residual saturation with capillary number (N C ) demonstrated that this rough-walled fracture exhibited behavior similar to that of a porous medium under water-flooding conditions. For a given hydraulic gradient, polymer-enhanced floods (using xanthan gum) were not as successful as conventional water flooding at removing residual from the fracture. The traditional form of the capillary number became an increasingly poor predictor of mobilization behavior as the viscosity of the displacing phase was increased. Incorporation of (µ W /µ NW ) -0.5 into the traditional capillary number provided a more appropriate dimensionless group with which to correlate residual PCE saturation in the fracture as µ W increased.

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Field vs Laboratory Polymer Retention Values for a Polymer Flood in the Tambaredjo Field

Manichand

Seright

2014

All Days

View full text Add to dashboard Cite

During a polymer flood, polymer retention can have a major impact on the rate of polymer propagation through a reservoir, and consequently, on oil recovery. A review of the polymer-retention literature revealed that iron and high-surface-area minerals (e.g., clays) dominate polymer retention measurements in permeable rock and sand (>100 md). A review of the literature on inaccessible pore volume revealed inconsistent and unexplained behavior. A conservative approach to design of a polymer flood in high-permeability (>1 darcy) sands would assume that inaccessible pore volume is zero. Laboratory measurements using fluids and sands associated with the Sarah Maria polymer flood in Suriname suggested polymer retention and inaccessible pore volume values near zero. A procedure was developed using salinity-tracer and polymer concentrations from production wells to estimate polymer retention during the Sarah Maria polymer flood in the Tambaredjo reservoir. Field calculations indicated much higher polymer retention values than lab tests, typically ranging from ~50 to 250 μg/g. Field cores necessarily represent an extremely small fraction of the reservoir. Because of the importance of polymer retention, there is considerable value in deriving polymer retention from field results, so that information can be used in the design of project expansions.

show abstract

On the Transport Properties of a Rod-Type Polymer in Sand Packs

Cited by 4 publications

References 1 publication

Field vs. Laboratory Polymer-Retention Values for a Polymer Flood in the Tambaredjo Field

Field vs. Laboratory Polymer-Retention Values for a Polymer Flood in the Tambaredjo Field

Effects of Capillary Pressure and Use of Polymer Solutions on Dense, Non-Aqueous-Phase Liquid Retention and Mobilization in a Rough-Walled Fracture

Field vs Laboratory Polymer Retention Values for a Polymer Flood in the Tambaredjo Field

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