Penetration of the drilling mud filtrate, the solid phase and the drilling mud proper in the process of well-completion reduces the filtration and capacitance properties of the productive formation. One way to solve this problem is to use chemical agents to destroy the components of the drilling mud and restore the original reservoir quality. The paper describes a lab experiment carried out to justify the application of the enzyme-breaker filter cake clean-up system at Suzun field. The efficiency of the enzyme-breaker application for a uniform and full filter cake clean-up is evaluated. The suggestions for pilot tests are made.
1. Варфоломеев С.Д. Химическая энзимология: Учебник. — М.: Издательский центр «Академия», 2005. — 480 с.
2. Hisham A. Nasr-El-Din, Mohammed Badri Al-Otaibi, Abdulqader A. Al-Qahtani, Omar A. Al-Fuwaires. Filter-Cake Cleanup in MRC Wells Using Enzyme/Surfactant Solutions, SPE, 2006.
3. Thomas E. Suhy, Ramon P. Harris Application of Polymer Specific Enzymes To Clean Up Drill-In Fluids, SPE, 1998.