Method and system for calculating old oil field water drive reserve control degree

• Main Authors: ZHANG JIQUN, CHANG JUNHUA, WU LI, JIA DELI, CUI LINING, WANG LIMING, LI XIANING, WANG QUANBIN
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention provides a method and system for calculating the old oil field water drive reserve control degree, and belongs to the technical field of oil field exploitation, and the method comprises the steps: collecting the splitting result and attribute field data of each layer in each well of a block; obtaining a pressure threshold value of each layer, and calculating to obtain a non-flowable potential difference of each layer in combination with the splitting result and the attribute field data; based on the non-flowable potential difference, calculating the potential when all grids of each layer reach a steady state, and obtaining a water drive wave and area of each layer; and calculating the water flooding wave and reserve of each layer according to the water flooding wave and area of each layer, and calculating the water flooding reserve control degree of the block. The method can overcome the limitation of a simplified formula definition method, a well pattern density method and an oil separation san