Study and Application on Production Decline Law of Water Drive Characteristic Curves

Abstract

Water drive characteristic curves and production decline curves are two important method to evaluate the recoverable reserves of oil field and predict development index. In this paper, we begin with deducing of Arps decline rules, and concluded that if the relationship of production decline rate of the same or similar model, they have the same or similar development index. According to this law, four kinds of commonly used water drive curve was deduced with oil production decline rate under the condition of fixed liquid. And Using this relationship, we established the method to prediction each year (month) development index of four commonly water drive curve. Through example, with the industry standard of recoverable reserves, compared to the results of the calculation formula of achieved higher prediction accuracy, and precision increases along with the time step narrowing of set, and the precision can be controlled. The research of this paper provides a basis for the prediction of water drive characteristic curve development index, and a basis for the selection of the recoverable reserve, and a method and reference for the further study of the water characteristic drive curve.