Choose from the Following Topics

GELATION/GEL PROPERTIES

Resistance factors and residual resistance factors Gelation time vs. temperature Inherent permeability of a gel to water Gravity effects Diffusion dispersion Oil “Clean up” time after a gel treatment

UNFRACTURED WELLS

Radius of gelant penetration vs. gelation time & injection rate Radius of gelant penetration in different zones for a fixed volume of injected gelant Radius of gelant penetration into Zone 2 relative to Zone 1 for radial flow (rp2/rp1) (Assuming that impermeable barriers separate the zones) & polymer retention Radius of gelant penetration into Zone 2 relative to Zone 1 for radial flow (rp2/rp1) (Assuming free crossflow between the zones) Injectivity or productivity losses and profile changes: Radial flow Critical rate for 3-D Coning

FRACTURED WELLS-DIAGNOSIS

Does my well have a linear flow problem? Fracture width, permeability, and conductivity from interwell tracer data Fracture width, permeability, and conductivity from injectivity or productivity data Converting permeability to an effective wormhole or tube radius

LEAKOFF FROM FRACTURES INTO MATRIX ROCK

Distance of gelant penetration into Zone 2 relative to Zone 1 for linear flow (Lp2/Lp1) (Assuming that impermeable barriers separate the zones) Distance of gelant penetration into Zone 2 relative to Zone 1 for linear flow (Lp2/Lp1) (Assuming free crossflow between the zones) Injectivity or productivity losses and profile changes: Linear flow Natural fracture area Gel treatment design for hydraulically fractured wells

EXTRUSION THROUGH FRACTURES

The pressure gradient required to extrude a gel through a fracture The gel volume required to reach a certain distance in a two-wing fracture The extrusion distance for a given gel volume in a two-wing fracture The gel volume required to reach a certain radius for a radial fracture cutting a (horizontal) well The extrusion radius for a given gel volume for a radial fracture cutting a (horizontal) well