Foam for CO2 EOR in a Carbonate Reservoir: Scale-up from Lab to Field

Sharma, Mohan; Alcorn, Zachary Paul; Fredriksen, S. B.; Fernø, Martin A.; Graue, A.

doi:10.1007/978-981-13-1211-3_6

Cited by 1 publication

(1 citation statement)

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“…Although several applications of foams have been reported in an attempt to improve conformance (Li et al 2010;Wang et al 2001;Zhdanov et al 1996), they cannot yet be considered a proven technology for water shutoff. Foams could, however, be more useful for gas shutoff purposes and beneficial when using CO 2 in enhanced oil recovery applications (Sharma et al 2020). Using CO 2 as a foam processing solvent may replace organic solvents such as chlorofluorocarbons that are being phased out for environmental reasons, and promote improved CO 2 storage in mature oil reservoirs (Alcorn et al 2019).…”

Section: Foamsmentioning

confidence: 99%

Water shutoff and conformance improvement: an introduction

2021

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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 strategy is provided for attacking excess water production problems. Problem types are categorized, typical methods of problem diagnosis are mentioned, and the range of solutions is introduced for each problem type. In the third section of the paper, the concept of disproportionate permeability reduction is introduced—where polymers and gels may reduce permeability to water more than to oil or gas. When and where this property is of value is discussed. The fourth section describes the properties of formed gels as they extrude through fractures and how those properties can be of value when treating conformance problems caused by fractures. Section 5 covers the efficiency with which gels block fractures after gel placement—especially, the impact of fluids injected subsequent to the gel treatment.

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