Cementing Technology Research and Application for Gas Wells with High Pressure, High H2 S and High Risk in Chuanyu Area
In order to continuously increase the cementing quality of complex formations in gas wells with HP, High H2S and High Risk, and prevent delay pressure on the casing annulus, research and development into cementing technologies, including cementing techniques, slurry systems and cementing tool accessories, has been undertaken. Such technologies include preparations technology of deep wellbore, swirl displacement technology, dry wellbore ce menting technology, prestressed cementing technology, and -pollution technology of slurry, primary and reserved cementing technology, shaking pulse cementing technology, rotating casing, etc. Slurries, such as gas block slur ry with large differential temperatures ranging from 70℃ to 130℃, fiber lost circulation slurry, and high early strength low density slurry have been developed. Furthermore, cementing tools such as a controlled liner hanger, liner packer, and build -in float collar have been produced, and specialized serial cementing technology for wells with HP, High H2S and High Risk have been created. Field trials indicate that this series of specialized tech nologies not only has improved cementing quality, but also prevented cementing accidents from occurring. There fore, these technologies have solved the difficulties of cementing in complex formation in gas well with HP, High H2S and High Risk in Chuanyu area.
Liu Shibin Xu Feng Chen Min Feng Bin Zeng Fankun Len Yonghong Tian Sitao Yang Rui Yue Sun Hongwei
国际会议
2010 CNPC International Wellbore Technology Seminar(2010年CNPC井筒技术国际研讨会)
北京
英文
298-306
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）