Dilute Surfactants for Wettability Alteration and Enhanced Oil Recovery in Carbonates

Ayirala, Subhash C.; Boqmi, Abdullah M.; Alghamdi, Amani; AlSofi, Abdulkareem M.

doi:10.3997/2214-4609.201900094

Cited by 6 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nonionic surfactants are known to be more resistant to harsh conditions. The effectiveness of nonionic surfactants for IFT reduction and wettability alteration was also proposed by Ayila et al (2019).…”

Section: Imbibition Testsmentioning

confidence: 99%

See 1 more Smart Citation

Laboratory Studies to Determine Suitable Chemicals to Improve Oil Recovery from Garzan Oil Field

Ercan¹,

Safran

Türkmenoğlu³

et al. 2020

J Surfact & Detergents

View full text Add to dashboard Cite

Garzan oil field is located at the south east of Turkey. It is a mature oil field and the reservoir is fractured carbonate reservoir. After producing about 1% original oil in place (OOIP) reservoir pressure started to decline. Waterflooding was started in order to support reservoir pressure and also to enhance oil production in 1960. Waterflooding improved the oil recovery but after years of flooding water breakthrough at the production wells was observed. This increased the water/oil ratio at the production wells. In order to enhance oil recovery again different techniques were investigated. Chemical enhanced oil recovery (EOR) methods are gaining attention all over the world for oil recovery. Surfactant injection is an effective way for interfacial tension (IFT) reduction and wettability reversal. In this study, 31 different types of chemicals were studied to specify the effects on oil production. This paper presents solubility of surfactants in brine, IFT and contact angle measurements, imbibition tests, and lastly core flooding experiments. Most of the chemicals were incompatible with Garzan formation water, which has high divalent ion concentration. In this case, the usage of 2-propanol as co-surfactant yielded successful results for stability of the selected chemical solutions. The results of the wettability test indicated that both tested cationic and anionic surfactants altered the wettability of the carbonate rock from oil-wet to intermediate-wet. The maximum oil recovery by imbibition test was reached when core was exposed 1-ethly ionic liquid after imbibition in formation water. Also, after core flooding test, it is concluded that considerable amount of oil can be recovered from Garzan reservoir by waterflooding alone if adverse effects of natural fractures could be eliminated. Keywords Garzan Á Mature oil field Á Chemical injection Á Imbibition Á Core flood Á Enhanced oil recovery

show abstract

Section: Imbibition Testsmentioning

confidence: 99%

“…The concentration of the surfactant is another important parameter due to the economic reasons (Ayila et al, 2019; Berg et al, 2010; Karimi et al, 2016; Nasralla et al, 2011; Spinler et al, 2000). Spinler et al obtained higher recovery with low concentration (100–500 ppm) of selected surfactants after imbibition test on the Kansas chalk.…”

Section: Introductionmentioning

confidence: 99%