SciELO - Scientific Electronic Library Online

 
vol.5 issue1TRANSIENT PRESSURE ANALYSIS FOR VERTICAL WELLS WITH SPHERICAL POWER-LAW FLOWDETERMINATION OF WELL-DRAINAGE AREA FOR POWER-LAW FLUIDS BY TRANSIENT PRESSURE ANALYSIS author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


CT&F - Ciencia, Tecnología y Futuro

Print version ISSN 0122-5383

Abstract

MAYA-TORO, Gustavo-Adolfo; CASTRO-GARCIA, Rubén-Hernán; PACHON-CONTRERAS, Zarith del Pilar  and  ZAPATA-ARANGO, José-Francisco. POLYMER GELS FOR CONTROLLING WATER THIEF ZONES IN INJECTION WELLS. C.T.F Cienc. Tecnol. Futuro [online]. 2012, vol.5, n.1, pp.37-44. ISSN 0122-5383.

ABSTRACT Oil recovery by water injection is the most extended technology in the world for additional recovery, however, formation heterogeneity can turn it into highly inefficient and expensive by channeling injected water. This work presents a chemical option that allows controlling the channeling of important amounts of injection water in specific layers, or portions of layers, which is the main explanation for low efficiency in many secondary oil recovery processes. The core of the stages presented here is using partially hydrolyzed polyacrylamide (HPAM) cross linked with a metallic ion (Cr+3), which, at high concentrations in the injection water (5000 - 20000 ppm), generates a rigid gel in the reservoir that forces the injected water to enter into the formation through upswept zones. The use of the stages presented here is a process that involves from experimental evaluation for the specific reservoir to the field monitoring, and going through a strict control during the well intervention, being this last step an innovation for this kind of treatments. This paper presents field cases that show positive results, besides the details of design, application and monitoring.

Keywords : Water injection; Bulk gels; Water channeling; Enhanced oil recovery; Conformance.

        · abstract in Spanish | Portuguese     · text in English     · English ( pdf )