This paper provides an introduction to the topic of water shutoff and conformance
improvement. After indicating the volumes of water produced during oilfield operations, a …

Context Polymer microgels are submicron-to-micron size, water-dispersible particles that are
formed through use of a crosslinking agent. Their permeability reduction capabilities, when …

Modern production methods and environmental constraints demand chemical solutions. And
as oilfields age, the need for chemicals to ensure steady production increases. Production …

Screening criteria have been proposed for all enhanced oil recovery (EOR) methods. Data
from EOR projects around the world have been examined and the optimum reservoir/oil …

ABSTRACT A new technique to determine excessive water and gas production mechanisms
as seen in petroleum production wells has been developed and verified. Based on …

This paper describes a straightforward strategy for diagnosing and solving excess-water-
production problems. The strategy advocates that the easiest problems should be attacked …

This work constructed transparent fracture models to visually track swollen preformed-
particle-gel (PPG) propagation through open fractures and water flow through PPG placed in …

This paper examines the potential of polymer flooding to recover viscous oils, especially in
reservoirs that preclude the application of thermal methods. A reconsideration of enhanced …

This paper introduces a new diverting agent that has been developed to control water
production in high salinity, high temperature reservoirs. Several dry gels have been crushed …

Reducing water production from hydrocarbon wells is one of the major requirements to
prolong the life span of production wells. Gel treatment is commonly regarded as one of the …