Paper: Prentice Creel, Jorge Italo Bahamon Pedrosa, Mark Briney and Tommy Ryan Halliburton Energy Services

Utilization of computer simulations addressing the placement of chemicals and/or cements for remedial repair workovers has demonstrated valuable assistance in successfully repairing integrity problems. Various situations encountered where casing leaks, isolation failures, and other repairs to wellbores and inter-reservoir communications may be addressed with a variety of solutions. Selection of the right solutions and how to selectively place them into the problem areas have historically needed a method to assist in the control and monitoring during design and in real-time operations. Often complicated situations are approached with highly complex solutions, primarily selected based on diagnostics performed to investigate and define the problems, their sources, their features, and the needed solution attributes and features necessary to satisfy the requirements.Computer simulation performed to address as many conditions and situations have shown to be of great assistance in designing and performing workovers when organized into the operations and performance of actual workovers. Pressure responses used to compare actual to design results enable operators to make decisions and change operations if needed. Details of the techniques used and the demonstration of various cases employing this technology are discussed.