摘要
顺北鹰1井二开采用?444.5 mm钻头钻至井深5 395.00 m中完,需下入?339.7 mm技术套管固井。固井施工存在套管悬重大、裸眼段长、二叠系火成岩易漏失层发育和超深大尺寸分级注水泥器下入难度大等技术难题,造成下套管过程中易发生阻卡和注水泥时易发生返性漏失等井下故障。因此,针对顺北鹰1井的特殊工况,通过校核载荷配套下套管工具、优化通井措施、设计套管下放速度和调整钻井液性能,确保套管顺利下入;通过设计适用于超深井的大尺寸分级注水泥器和固井施工流体排量、采用非连续式分级注水泥工艺和复合低密度防漏水泥浆,防止注水泥过程发生漏失,保证固井质量。顺北鹰1井二开固井采取上述技术措施,φ339.7 mm套管顺利下至设计井深,注水泥过程中只出现轻微漏失,易漏失层位固井质量中等,实现了有效封固。顺北鹰1井φ444.5 mm长裸眼段顺利封固,为顺北油气田大尺寸长裸眼固井积累了成功经验,其固井技术措施可为国内深井超深井大尺寸长裸眼固井提供借鉴。
In the second spud of Well SBY-1, the ?444.5 mm drill bit is used to drill to the depth of 5 395.00 m,and put in the ?339.7 mm technical casing. There are a series of technical problems in casing running and cementing operation, such as heavy casing suspension, long open hole section, development of leaky layer of Permian igneous rock, lack of experience in running super deep and large-scale graded cement injector, etc., which are very easy to cause complex working conditions such as sticking in casing running and loss of return in cementing. Therefore, it is urgent to optimize the matching technology to ensure the cementing quality. According to the special working conditions of Well SBY-1, through load checking calculation, well passing measures strengthening, casing running speed and drilling fluid performance optimization, a large-scale casing running technology of ultra deep well is formed;through discontinuous staged cement injection technology and low-density leak proof cement slurry system optimization, the cementing technology of ultra deep and large-scale casing is improved. Based on the above measures, the second spud in casing of Well SBY-1 is running smoothly, and the cementing quality of the leaky zone is medium, which realizes effective sealing. The research results could be used for reference for large-scale casing running and cementing construction in ultra deep wells, and effectively ensure the safe and efficient development of Shunbei Oil and Gas Field.
作者
邹书强
王建云
张红卫
伊尔齐木
ZOU Shuqiang;WANG Jianyun;ZHANG Hongwei;Eerqm(Sinopec Northwest Oilfield Company,Urumuqi,Xinjiang,830011,China)
出处
《石油钻探技术》
CAS
CSCD
北大核心
2020年第1期40-45,共6页
Petroleum Drilling Techniques
基金
国家重点基础研究发展计划(“973”计划)项目“深井复杂地层安全高效钻井基础研究”(编号：2010CB226700)
国家自然科学基金项目“控压钻井测控理论及关键问题研究”(编号：51334003)联合资助
关键词
超深井
固井
水泥浆
注水泥接箍
顺北鹰1井
顺北油气田
ultra-deep well
cementing
cementing slurry
cementing collar
Well SBY-1
Shunbei Gas and Oil Field
