喇萨杏油田含水上升规律研究及变化趋势预测.pdf

2009年12月
大庆石油地质与开发
第28卷第6期
Petroleum Geology and Oilfield Development in Daqing
Vol 28 No 6
DOI:10.3969/J.ISSN.1000-3754.2009.06.015
喇萨杏油田含水上升规律研究及变化趋势预测
梁文福吴晓慧官长路
1.中国地质大学,北京100083;:2.大庆油田有限责任公司勳探开发研究院,黑龙江.大庆163712
摘要:针对喇萨杏油田进入特高含水期“控水”难度大,原油成本急剧上升等问题,为实施有效调整,必须认
识特高含水期油田含水上升规律。应用数值模拟计算、油水相渗透率曲线以及小井距井资料,分析了油层非均
质性、原油黏度、开发调整措施对喇萨杏油田含水上升规律的影响。研究结果表明:喇萨杏油田非均质性严重
原油黏度也较高,中低含水期含水上升速度快,一半以上的可采储量要在高含水期后采出;当进入特高含水期
后,油层非均质性、原油黏度等地质因素对含水上升速度的影响作用变小,其含水上升规律趋于由相渗曲线得
到的含水与采出程度理论变化曲线:20世纪90年代初提出的通过注水产液结构调整实现稳油控水的开发模式有
效地控制了油田含水上升速度。在此基础上预测了油用特高含水期含水变化趋势,提出了“控水挖潜”对策。
关键词:含水;油层非均质性;原油黏度;调整措施
中图分类号:TE342
文献标识码:A
文章编号:10003754(2009)06-0079-04
STUDY AND PREDICTION OF WATER-CUT INCREASE AND
VARIATION RULES N LASAXING OILFIELD
IANG Wen-fu WU Xiao-hui, GONG Chang-lu
( l. China Uniersity of Geosciences, Beijing 100083, China; 2. Eploration and Development Research Institute
Daging Oil field Company Ltd. Daging 163712, China
Abstract Aiming at difficulty for controlling water cut in high water-cut stage of Lasaxing Oilfield and oil produc-
tion cost increase, an in order to implementing effective adjustment, water-cut rising rules for oilfield in high water
cut stage must be understood. Numerical simulation data, oil/ water relative permeable curve and dense well spac
ing data are used to analyze impact of reservoir heterogeneity, oil viscosity and developing adjustment methods on
water-cut rising rules in Lasaxing Oilfield. Results show that Lasaxing Oilfield has high reservoir heterogeneity and
high oil viscosity, water-cut increases rapidly in the middle and high water-cut stage, and more than half of recov
erable reserves are produced in high water-cut stage. In addition, while entering super-high water eut stage, reser
voir heterogeneity and oil viscosity have less impact on water cut increase, and water-cut increase rules tend to the
theoretical variation curves of water cut and recoverable degree obtained from relative permeability. In the early of
1990s, water-cut rising speed of oilfield is effectively controlled by development pattern of "stabilizing oil produc
tion and controlling water cut " realized from water injection and fluid production adjustment. Based on this, water
cut variation trends in the super-high water cut stage of the oilfield are predicted and the method ofpotential tap
ping by controlling water cut"is proposed
收稿日期:2008-12-02
作者简介:梁文福,男,1966年生,高级工程师,在读博土,从事油气开发工作。
E-mail:wuxiaohui66@petrochina.com.cn