摘要
在岩心、测井及地震资料等综合分析的基础上,对海拉尔盆地苏德尔特油田布达特群储层裂缝进行了综合评价。建立了裂缝发育程度的三维空间分布模型,模型显示上部Ⅰ油组裂缝发育程度较好、中部Ⅱ油组裂缝发育程度中等、下部Ⅲ油组裂缝发育程度较差。裂缝的发育与岩性、岩层厚度及断层密切相关,随着泥质、凝灰质含量的降低、砂泥岩单层厚度的减小及距断层距离的减小,裂缝发育程度增强。应根据裂缝的发育规律采取相应的开发措施,加大渗透性较好的裂缝方向的井距,使用不规则井网进行开发;采取与裂缝垂直方向布置水井与油井;增加中、低渗透井区的水注入量,控制高渗透层的水注入量;在裂缝较发育的井区,使用较高的采油速度;在裂缝密度小的井区,则需进行压裂,使用较低的采油速度。
Based on core observation,well logging,and seismic data,reservoir fractures in the Budate Group of Sude'erte Oilfield in Haila'er Basin were comprehensively evaluated.3D spatial model shows fractures development degree of three oil-members:Oil Formation I is characterized by better fracture development degree,Oil Formation II is characterized by medium fracture development degree,and Oil Formation III is characterized by worse fracture development degree.Fracture growth was closely related with lithology,stratum thickness and faults,fractures tend to be developed with the decrease of shaliness and tuffaceous content for the single layer thickness of sandstones and mudstones and the distance to faults.Then the corresponding measures of fracture development should be taken on the distribution rules of fractures development,including widening well spacing in the blocks with high-permeability fractures,the irregular well pattern development,setting oil and water wells in vertical directions of fractures,increasing water influx in the blocks with middle-low permeability,controlling of water influx in the blocks with high permeability,the high production rate in the blocks with well fractures development,and first fracturing and then the low production rate in the blocks with poor fracture development.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第3期15-18,23,共5页
Journal of Oil and Gas Technology
基金
中国石油天然气股份公司科技攻关项目(030127)
关键词
苏德尔特油田
储层裂缝
综合评价
Sude'erte Oilfield
reservoir fractures
comprehensive evaluation
