文昌13-1油田定向井避免油水乳化合理配产研究

Researching appropriate proration production to prevent oil-water emulsification in directional wells of WC 13-1 oilfield

文昌13-1油田部分定向井在生产过程中出现了较为严重的油水乳化现象。为了达到最优产量与防止乳化的生产协调,利用自主研制的实验装置,模拟文昌13-1油田地层温度、压力和流体(原油+水)流动以及定向井砾石充填完井条件,在室内进行了油水乳化模拟实验,研究了乳化液形成条件及其与含水率、总产液量的关系,并确定出了在不同含水率情况下避免油水乳化的合理产液量,为现场生产提供了理论指导。

Serious oil-water emulsification appeared in some directional wells during their production in WC13-1 oilfield. In order to reach an accordance between optimizing production and preventing emulsification, laboratory simulation experiments were carried out to probe into the conditions of oilwater emulsification and its relationship with water cut and total fluid production rate, by using the self-developed apparatuses and by modeling formation temperature, pressure, fluid （oil and water） flowing and gravel pack completion of directional wells in WC13-1 oilfield. Therefore, the appropri ate liquid production rates to prevent oil-water emulsification are defined under various water cuts, providing a theoretical guide for the field operation.