钻井液与完井液2017，Vol.34Issue(4)：90-95,6.DOI:10.3969/j.issn.1001-5620.2017.04.017
安探1X高温深探井小间隙固井技术
Cementing High Temperature Deep Well Antan-1X with Narrow Annular Spaces
摘要
Abstract
The Langgu sag, one of the three sags rich in oil in the Jizhong Depression, north China, is the main oil producing area of Huabei Oilfield. The reservoirs are deeply buried and the formation temperatures are high. The well Antan-1x is an exploratory well drilled in this area. This well had complex well profile, and the φ127 mm liner (in 4th interval) was run to 5,494 m, at which the formation temperature is 177 ℃. Gas zones at the completion depth are very active and are difficult to control with high density drilling fluids. Narrow annular spaces and hence thin cement sheaths impose challenges to the high temperature stability and anti-channeling ability of cement slurry, and the compressive strength of set cement. A high temperature anti-channeling cement slurry was formulated for use in the well Antan-1x. This cement slurry has good anti-settling performance and ability in minimizing the amount of free water. Its thickening time is adjustable. The compressive strength of the set cement under 180 ℃ does not retrograde. A flushing spacer was formulated with high temperature suspension stabilizer, and the settling rate of the spacer under 180 ℃ was less than 0.03 g/cm3. In cementing the φ127 mm liner string of the well Antan-1x, high quality cementing job was done with the high temperature cement slurry and the spacer, laying a good foundation for the later exploration and development of the Jizhong depression in north China.关键词
深井/高温/小间隙固井/防窜/抗高温防窜水泥浆/抗污染冲洗隔离液/廊固凹陷Key words
Deep well/High temperature/Cement well with narrow annular space/Anti-channeling/High temperature anti-channeling cement slurry/Pollution-resistant flushing spacer/Langgu sag分类
能源科技引用本文复制引用
刘子帅,李拥军,唐守勇,王东明,蒋世伟,周崇峰..安探1X高温深探井小间隙固井技术[J].钻井液与完井液,2017,34(4):90-95,6.基金项目
华北油田分公司项目"复杂探井固井技术研究与应用"(HBYT-2015-JS-402) （HBYT-2015-JS-402）
国家重大专项课题课题四"复杂地质条件下深井钻井液与高温高压固井技术研究"(2011ZX05021004) （2011ZX05021004）
国家重点研发项目"固井工程用高耐蚀高韧性水泥基关键材料与技术"(2016YFB0303602). （2016YFB0303602）
