Wettability Alteration

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Description:

Surfactant-based wetting agents are used to modify wettability of reservoir rocks to enhance oil production. The wettability can be reversed toward oil-wet to release oil capillary trapping or toward water-wet to enhance water imbibition and oil counter-current production.

Application:

Near-wellbore treatment and Water imbibition in fractured oil-wet carbonates.

Results:

A dedicated workflow including both automated product screening (high throughput contact angle and imbibition measurements) and petrophysics measurements (Amott/USBM tests) has been set up. Performance of selected products has been demonstrated in a harsh application case of imbibition in Lavoux carbonate rendered oil-wet by an asphaltenic crude oil.

Issues

Need

Objective

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