老油田控制自然递减率的方法分析　　

Method analysis on natural decline rate control in mature oilfield

刘汉成

LIU Hancheng

华北油田公司采油工程研究院，河北任丘　062552

Production Engineering Research Institute, Huabei Oilfield Company, Renqiu 062552, China

提供了一种以获得稳定的单井井口产油量为目标来有效控制自然递减率的途径和实现方法。以流体的连续流动过程为主线，提出三区两类六因素集分析方法。初步分析了每个流动区域的目标参数及其影响因素的构成。并推荐用灰度关联理论来分析各流动区域中的影响因素与区域目标的关联度。可以根据该关联度排序来选择治理与调整措施的优先顺序。

In order to gain stable single well production rate, this paper provides a method to effectively control the natural decline rate and proposes the way to realize it. Taking continuous flow process of fluid as main line, three zones, two types and six factors analyzing methods were mentioned in detail. Preliminary analyses were made to the target parameters of each flow zone and the component part of each factor affecting the target. It is suggested that gray correlation theory was used to investigate the correlation degree between the influence factors in every flow zone and zone target. Priorities of control and adjustment measures could be chose according to the sequence of correlation degree for influence factors.