屏蔽式暂堵技术在狮子沟油田的应用  

APPLICATION OF DRILLING FLUID SHIELDING AND TEMPORARY BLOCK TECHNOLOGY IN SHIZIGOU OIL FIELD

作　　者：曾明友[1] 石小兵[2] 魏民洁 黄本生[1] 王小红[1] 汤小文[1] 

机构地区：[1]西南石油大学材料工程学院 [2]西南石油大学石油工程学院,四川成都610500 [3]青海石油管理局

出　　处：《西南石油学院学报》2006年第4期67-70,共4页Journal of Southwest Petroleum Institute

摘　　要：针对柴达木盆地狮子沟构造地层特性及裂缝性油气藏易于受到损害的情况,结合地层水矿化度较高,易与外来流体发生物理化学反应形成沉积物,阻塞油气通道,因此采用高矿化度钻井液,最大限度地接近地层水性能,减少对油气层的污染。根据已完成的狮子沟E13油气层损害机理研究,制定了屏蔽式暂堵保护油气层技术措施,筛选了钻井液配方。经过在狮子沟油田狮25-1水平井的现场应用,表明屏蔽式暂堵技术既满足了水平井施工要求,又有较理想的保护油气层效果。Aim at the situations of structure formation characteristic and the damage tended fracture reservoir in the Shizigou of Chaidamu,also high formation water salinity that easy to bring sedimentation from the physical chemistry reaction with the external fluid,which blocking the oil and gas passage,a drilling fluid with high formation water salinity has been used which is proximity to the formation water characteristic and reduce the damage of the formation.According to the mechanics research results of damage reservoir of Shizigou E13,we design the shielding and temporary block technology and select the formulation of drilling fluid to protect formation.By field application in the 25-1 the Tianshi of Shizigou,results show that the shielding and blocking up technology may not only meet demand in the horizontal well construction but also has good effects on reservoir protection.

关 键 词：钻井液 地层损害 保护油气层 屏蔽式暂堵技术 反排解堵 

分 类 号：TE258[石油与天然气工程—油气井工程]