摘要
分析套管损坏的特点及分布规律,采用岩心描述、地应力测试、测井解释等方法,研究大庆长垣西部萨、葡、高油层天然裂缝及现代地应力场的基本特征,分析导致研究区套管损坏的主要地质因素.结果表明,长垣西部油田层间裂缝、高角度构造裂缝较发育,地应力分布复杂,油田注水开发后地应力变化使裂缝面开启或滑移是该区套损的主要内因;在开发过程中应适当控制压裂规模、保持合理注水压力,才能有效预防套管损坏.
This paper analyzes the characteristic and distribution pattern of casing damage in the round,adopts many methods and techniques such as core distribution,ground stress measurement,log interpretation etc,to systemically investigate the essential characteristic natural fracture and modern in-situ stress of Saertu,Putaohua,Gaotaizi reservoirs in the west of Daqing Placanticle and what they have done to casing damage,further analyzes the main effecting geological factors that result in casing damage in this region.Researches show that many interbedded fractures and high angle tectonic fractures are distributed in this region and the distribution of in-situ stress is very complex.This paper points out that the main internal causes are the open and glide of fracture face effected by in-situ stress,put forward two preventive measures to control the fracturing scale and maintaining national water injection pressure,to prevent casing damage.
出处
《大庆石油学院学报》
CAS
北大核心
2010年第2期33-37,共5页
Journal of Daqing Petroleum Institute
基金
中国石油天然气股份公司科技攻关项目(030127)
关键词
天然裂缝
地应力
套管损坏
人工压裂
大庆油田
地质因素
natural fracture
in-situ stress
casing damage
artificial fracturing
Daqing oilfield
geological factors
geological factors
