低孔隙度低渗透率油气藏射孔技术探讨  

On Perforating Technique in Low Porosity and Permeability Reservoirs

作　　者：门孟东[1] 

机构地区：[1]辽河石油勘探局测井公司,辽宁盘锦124011

出　　处：《测井技术》2005年第B02期27-29,共3页Well Logging Technology

摘　　要：低孔隙度低渗透率油藏特点使用常规射孔方法很少达到理想工业油流,国内大多数油气藏均属于该类型油气藏。根据油藏特点,结合现有射孔技术,提出综合应用复合射孔、高能气体压裂、定方位、超正压、三联作等射孔技术消除钻井污染、沟通天然裂缝,增加裂缝宽度,改善裂缝导流能力,提高采收率。Low porosity and permeability reservoirs are characterized by lower permeability, hard formation and easier to be damaged, so it's hard to obtain ideal commercial oil and gas flow by conventional perforation methods. Now most of reservoirs in China oilfields are similar ones with low porosity and permeability. Under such circumstances, enhanced perforating, high energy gas fracturing, directional perforation, ultra-overbalanced perforating and tri-mingled perforating & testing are applied to reduce drilling damages, channel natural fractures , enlarge fracture width and improve fracture conductivity, thereby realizing ideal oil and gas flow and increasing production ratio.

关 键 词：低渗透油气藏 低孔隙油气藏 复合射孔 高能气体压裂 定方位射孔 超正压射孔 

分 类 号：TE257.1[石油与天然气工程—油气井工程]