论文详情

冷科1井?139.7mm油层套管双级固井技术

石油钻采工艺

1999年 21卷第5期

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Title

TWO STAGE CEMENTING METHOD FOR 139.7mm PRODUCTION CASING IN WELL LENGKE-1

作者

齐奉中王文凯

Authors

Qi Fengzhong Wang Wenkai

单位

石油勘探开发科学技术研究院廊坊分院华北石油管理局井下作业公司

摘要

冷科1井位于柴达木盆地冷潮五号,是石油天然气集团公司的1口重点科学探索井。完钻井深5200m,?139.7mm油层套管下深4854.63m,封固段从套管鞋到井口,钻井液密度为1.80g/cm3,井底循环温度达到120℃。在高温、高压、长封固段井中综合采用提高顶替效率、防气窜、高密度水泥浆等技术措施后,双级固井取得成功,固井质量优质。

Abstract

Well Lengke-1,located in No.5 block,Lenghu of Chaidam Basin,is a key scientific investigation well of CNPC.The.drilling depth is 5200m,and 139.7mm production casing was set to the depth of 4854.63m.The cementing interval is from the casing shoe to the wellhead.The mud density is 1.80g/cm3.The bottomhole circulating temperature is 120℃.The two stage cementing method is succeeded with high quality,after measures such as the enhanced displacement efficiency,channeling prevention and high density slurry method are used in high temperature,high pressure and long-distance cementing interval.

关键词：

油层套管; 固井; 防窜; 顶替; 固井质量;

Keywords:

production casing; well cementing; channeling prevertion; displace; cementing quality;

基金项目

DOI

10.3969/j.issn.1000-7393.1999.05.008