Encapsulated scale inhibitor for use in fracturing treatments

摘要

This paper describes the development and testing of a soild, encapsulated scale inhibitor for use in fracturing treatments. Data from laboratory and field tests are reported. Laboratory testing with a continuous flow apparatus has yielded inhibitor release rates under dynamic conditions. The inhibitor was tested to determine the minimum inhibitor concentration required to inhibit the formation of CaCO_3, CaSO_4, and BaSO_4, scales in brine. Labroatory data were used to determine the prameters of a mathematical model to predict the long-term release rate of the inibitor. Data from a treated well are compared with predictions of the model.