Oil field water management is increasingly a critical factor with respect to environmental protection and profitability for both new and mature oil field developments. For new oil field developments the integration of water management with oil production planning is vital to avoid environmental damage and bottlenecks to production. For mature oil fields the harmonization of topsides and downhole water control is critical to extending their economic life and continued compliance with environmental regulations, The multidisciplinary and inter-departmental nature of oil field water management, combined with rapidly evolving technology and environmental regulations, makes effective planning and communication vital. An oil field water management system using the latest information technology is described which has the objective to improve design, operation, profitability and environmental compliance. A suite of computer programs, amalgamated by a relational database can be installed on the office network to improve inter-department communication and data accessibility. The software provides expert system step-by-step guidelines for water management through out the oil field life cycle. After existing information on the field is inputted into the database, deficiencies in the data-set are highlighted along with guidance to rectify the shortfalls. Once an adequate data-set is compiled, sub-routines investigate, for example, water compatibilities, reservoir souring, thermal fracturing, water injection and production rates, environmental regulations, water quality requirements, downhole water control and topsides process design. A water handling strategy for the oil field life-cycle is then defined.

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