江苏油田特低渗透油藏三角形井网有效动用系数评价  

Evaluation of effective development coefficient for triangle well patterns in extra-low permeability fault-block reservoirs of Jiangsu Oilfield

作　　者：杨鹏[1] 徐莎[1] 骆瑛[1] 卞炜[1] 齐亚冬[2,3] 杨正明[2,3,4] 

机构地区：[1]中国石化江苏油田分公司地质科学研究院,江苏扬州225009 [2]中国科学院渗流流体力学研究所,河北廊坊102801 [3]中国石油勘探开发研究院提高石油采收率国家重点实验室,北京100083 [4]中国石油勘探开发研究院廊坊分院,河北廊坊102801

出　　处：《复杂油气藏》2011年第2期52-55,共4页Complex Hydrocarbon Reservoirs

摘　　要：从非线性渗流基本公式出发,应用流管积分法推导了三角形井网有效动用系数计算公式,成果应用表明:对于江苏油田低渗透油藏(K<10×10-3μm2),合理油井井距尽量控制在200m,井排距在150m以内,储层才能得到有效的动用;当油井井距和排距超过这个范围,即使放大注采压差,有效动用系数仍然较低。Based on the non-linear seepage flow formula,considering the pattern shape of extra-low permeability fault-block reservoirs whose fluids have non-linear percolation feature,and adopting the stream-tube integral method,a new formula for effective development coefficient was deduced by using the stream tube integration method.The research achievement was applied in the well pattern evaluation of low-permeability fault-block reservoirs of Jiangsu Oilfiled.Research results indicated that under the condition of a easonable oil well spacing of 200m and a well row spacing of 150m,the low permeability reservoirs （K10×10^-3μm^2） can be effectively developed.When the oil well pacing and well row spacing exceed the above range,the effective development coefficient is still relatively low even if the injection-production differntial pressure was increased.

关 键 词：特低渗透断块油藏 三角形井网 有效动用系数 非线性渗流 

分 类 号：TE348[石油与天然气工程—油气田开发工程]