In the modern oilfield management, all the parameters of the oilfield have been digitized. The well location becomes the hub linking of various parameters in the database. With the increasing of a great amount of dato every year,the fast judgement about the relationship between well location and scope block ( such as the developed area, sedimentary facies, fault block, etc. ) , and fast searching the well location name in the scope block can not only greatly improve the efficiency, but also improve the accuracy of reservoirs. In order to solve the problem, the mathematical model has been found for the judgement about the location relationship between position and polygon. On the basis of analyzing the advantage and disadvantage, the improved Q type algorithm, the pre-decision of point to be sentenced, the decision of special point to be sentenced and the general point decision fast judge the ownership of well location by using the improved Q type algorithm. It is widely used in the process of the reservoirs of digital management in the Jinlin oilfield.%现代化油田管理中,油田的各项参数已经全部数字化;其中井位成为数据库中各项参数的链接枢纽.对于每年新增的大量数据,数据库中井位与范围区块(如开发区块、含油面积范围、沉积相范围、断块等)的归属关系快速判定,以及快速查询出某一范围区块中的井位名称,不仅可以大大提高地质工作人员的工作效率,而且还可以提高油藏描述的精度.解决该问题的相应的数学模型为判定点与多边形的位置关系.在分析所有算法优缺点的基础上,利用了改进的Q型算法,通过待判点的预判定、特殊性待判点的判定;以及一般性点的判定来快速判定井位的归属问题.根据此算法进行编程,在吉林油田的数字化管理的过程中得到了广泛的应用.
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