大庆石油地质与开发2018，Vol.37Issue(3)：59-63,5.DOI:10.19597/J.ISSN.1000-3754.201709044
启动压力梯度和应力敏感效应对油藏产能的影响
INFLUENCES OF THE START-UP PRESSURE GRADIENT AND STRESS SENSITIVE EFFECT ON THE PRODUCTIVITY OF THE OIL RESERVOIR
摘要
Abstract
Due to the existences of the starting pressure gradient and stress sensitive effect,the seepage process of the reservoir fluid no longer conforms to the classical Darcy percolating theory and the fluid flow resistance is increased,so the productivity of the oil well is lowered.Therefore,with the help of the established productivity formula in the consideration of the starting pressure gradient and the stress sensitive effect,the changes of the oil well productivity index (PI) were analyzed under the actions of the pressure gradient,the stress sensitive effect and the simultaneous actions of the two stated above,and moreover the influences of the gradient and effect on the productivity were figured out.The achievements show that in the presence of the start-up pressure gradient,with the rise of the production pressure difference,the PI is increased as well;while when there exists the stress sensitive effects,with the rise of the production pressure difference,the PI is decreased;for the presentations of the both,by means of adjusting the production pressure difference,the oil well production can be enhanced.关键词
启动压力梯度/应力敏感/采油指数/油井产能Key words
start-up/starting pressure gradient/stress sensibility/oil productivity index (PI) /factor/oil well productivity分类
能源科技引用本文复制引用
祝明谦,王怒涛,张辉..启动压力梯度和应力敏感效应对油藏产能的影响[J].大庆石油地质与开发,2018,37(3):59-63,5.基金项目
国家科技重大专项“乌石凹陷低渗敏感性储层渗流机理及改善水驱动效果评价研究”(2016ZX05024-006-005). （2016ZX05024-006-005）
