Research On The Geological Reserves Potentiality And The Calculation Methods Of Recoverable Reserves In Sazhong Area

The recoverable resources are the base of oil-field development material, the foundation of plan adjustment and the evaluation of the effect of oil-field development, the reliability of the results of recoverable resources will affects directly on decision-making in petroleum enterprise .The Daqing Oil Field always attach importance to the recoverable resources research work. Had deeply studied the existing reckoning methods, the scientific researchers have developed successively many methods which suited the actual situation oil field, which has, in view of oil field own characteristic. At present there has formed the classified well recoverable resources appraisal technology. But the unceasing development of the oil-field development technology which sets a higher request to the recoverable resources appraisal work, therefore promote the recoverable resources appraisal technology was needed.This article has systematically investigated and studied the reserves classification and the recoverable resources assessment methods at home and abroad, summarized the recoverable resources appraisal technology systematically, analysis each kind of recoverable resources assessment method application condition and the serviceability .Unified the theory and the actual production data, have clarified each kind of oil layer geological reserve, and the usage relations of water-poly flooding in oil layer, optimized the recoverable resources assessment methods which suited for this formation reservoir quality and the watery stage, correctly quantified the recoverable resources which increase by polymer flooding in the group of Puâ… main oil layer, has provided the evaluation of the efficiency in different type oil layer water-oil displacement and the recovery ratio methods; Points out the adaptation range of the water-flooding curves under the different watery condition; Established three methods which could evaluate the polymer-flooding in main force oil layer and recoverable resources; Get breakthrough in recoverable resources reckoning methods with polymer-flooding; And evaluated the recoverable resources by these methods in Sa development area.The results will provide an effective foundation for exploit Sazhong area oilfield .