小间隙固井合理扩眼尺寸研究  

Research on Rational Reaming Size in Small-gap Cementing

作　　者：周伟[1] 于洋[1] 刘晓民[1] 杨远光[2] 刘云[1] 

机构地区：[1]中国石化西北油田分公司工程技术研究院 [2]西南石油大学石油工程学院

出　　处：《石油机械》2013年第6期28-30,35,共4页China Petroleum Machinery

基　　金："十二五"国家科技重大专项"大型油气田及煤层气开发"之课题"碳酸盐岩缝洞型油藏钻井技术完善与推广"(2011ZX05049-02-02)

摘　　要：若想提高小间隙井的固井质量,需要扩眼增大环空间隙。基于环空水力摩阻当量密度,提出了小间隙环空摩阻压降当量密度法、管内外推力相等法和声幅测井法等3种小间隙固井扩眼尺寸确定法,并综合3种方法给出了小间隙固井扩眼值的推荐范围。所得结果认为,为保证139.7、127.0和114.3 mm套管固井质量,所需扩眼尺寸分别为176.7～187.5、164.5～174.8和151.6～162.1 mm。该研究成果应用于塔河油田S119-1CH井127.0 mm尾管固井中,在井下5 561.45～5 976.00 m固井质量优质。The annular gap should be increased through reaming in order to improve the cementing quality of small-gap wells. On the basis of annular hydraulic friction equivalent density, the three methods to determine the small-gap reaming size were formulated, including the equivalent density method of small-gap annular friction pres- sure differential, internal and external tube thrust equivalence method and acoustic amplitude logging method. The recommended scope of small-gap cementing reaming value was given through a comprehensive consideration of the three methods. The findings show that to ensure the cementing quality of the 139.7, 127.0 and 114.3 mm cas- ings, the reaming dimensions required are 176.7 - 187.5, 164. 5 - 174. 8 and 151.6 - 162.1 ram. The research achievement was applied to the ~127.0 mm liner cementing in Well Sl19- 1CH in Tahe Oilfield. The cementing quality was very good within the downhole depth of 5 561.45 -5 976.00 m.

关 键 词：小间隙 扩眼 环空摩阻 当量密度 声幅测井 尾管固井 

分 类 号：TE925[石油与天然气工程—石油机械设备]