上浮剂隔层控制裂缝高度延伸实验研究  

EXPERIMENT OF ARTIFICIAL BARRIER CREATED BY BUOYANT DIVERTER FOR CONTROLLING FRACTURE HEIGHT

作　　者：胡永全[1] 赵金洲[1] 林涛[2] 谢朝阳[3] 张烨[2] 

机构地区：[1]“油气减地质及开发工程”国家重点实验室·西南石油大学,四川成都610500 [2]中国石化西北油田分公司工程技术院,新疆乌鲁木齐834000 [3]中国石油大庆油田公司海拉尔分公司,内蒙古呼伦贝尔021000

出　　处：《西南石油大学学报（自然科学版）》2010年第2期79-81,共3页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家科技重大工程专项(2008ZX050140006-1)

摘　　要：对于遮挡层(隔层)较差的低渗透储层,采用人工隔层控制压裂缝高非常必要。分析了影响人工隔层阻抗的因素,对岩芯流动装置进行了改造。用Malvern激光粒度测试了一种上浮剂的粒度分布,对岩芯进行沿轴向剖分2/3的特殊处理,通过岩芯流动实验来模拟人工隔层的形成。按正交设计原理设计实验方案,并按照岩芯流动实验行业标准进行实验。应用非线性处理后的逐步回归方法得到了人工隔层强度与携带液黏度、上浮剂浓度和岩芯渗透率的统计公式。为指导现场控制缝高的压裂设计提供了依据。It is necessary for low-permeability formation with weak barriers to control fracture height hydraulically by creating artificial barriers.In this paper,influential factors on resistance role of artificial barriers are analysized.Then,the core flow test device is modified by affixing an intermediate container in order to keep the buoyant dispersing during experiment.The particle size distribution is tested with Malvern laser counter.The crack is made about 2/3 length in artificial core for simulating artificial barrier process by core flow test which is accomplished based on recommended practice of petroleum industry.Lastly,successive regression method is applied and a statistical relationship of the barrier strength with carrying fluid viscosity,buoyant diverter concentration and core permeability obtained.The results provide a design foundation for controlling the fracture height growth.

关 键 词：水力压裂 人工隔层 上浮剂 裂缝高度 流动实验 

分 类 号：TE357[石油与天然气工程—油气田开发工程]