摘要
根据储层速敏性评价结果,南堡油田馆陶-东营组油藏为无—弱速敏,但在生产过程中,部分采油井出砂,注水井压力上升较快。通过对速敏评价数据分析,大部分岩心渗透率值呈上升趋势,没有下降的拐点,但存在明显上升的拐点;岩心速敏实验证明气测岩心正—反—正向渗透率值有不同程度的降低,单相油相渗透率正—反—正向渗透率值有所升高,进一步证明了储层存在速敏性;同时储层敏感性矿物分析进一步揭示了该储层的速敏损害程度。因此建议该储层在注采过程中,应控制合理的注采速度,降低速敏对储层造成的损害,提高储层采收率。
Although the Guantao and Dongying reservoirs of Nanpu Oilfield are null-to-weak velocity sensitivity,sand entry exists in some production well,and the input pressure rises up quickly.The experimental data of velocity sensitivity shows that there is no descending breakpoint but ascending breakpoint of the permeability of most cores.On the proof test of velocity sensitivity.Moreover,the gas-measured permeability proof that the reservoirs are velocity sensitivity,so adapting rational injection-production velocity to decrease velocity sensitivity damage is necessary.
出处
《钻井液与完井液》
CAS
2011年第3期28-30,93,共3页
Drilling Fluid & Completion Fluid
基金
国家重大科技专项(2008ZX-05015-002)
关键词
速敏性
评价方法
影响因素
防止地层伤害
南堡油田
Velocity sensitivity
Evaluation method
Affecting factor
Formation damage prevention
Nanpu oilfield
