Cementation of long open hole in Shunbei block, Tarim Basin
-
摘要: 塔里木盆地顺北区块地质条件复杂，储层埋藏深（大于7 500 m），二叠系火成岩漏失严重，志留系承压能力低，上奥陶统发育辉绿岩侵入体，坍塌应力高。优化井身结构后将193.7 mm套管直下至侵入体顶，固井面临套管下入深（7 000 m）、固井漏失风险大的技术难题。通过优化浆柱结构、扶正器设计，在低密度水泥浆中加入温敏记忆堵漏材料，提高水泥浆堵漏能力，优化防漏固井工艺，井口反挤低密度水泥浆等措施，有效保障了长裸眼固井质量。顺北区块长裸眼双级固井实施5口井，固井质量均达到良好及以上。Abstract: The Shunbei block in the Tarim Basin has complicated geologic conditions, and reservoirs are deep buried, usually over 7 500 m. Pyrolith in Permian leaks seriously. The Silurian formation has a poor pressure resistivity. The Upper Ordovician develops diabase intrusion body, and has a strong collapse stress. To optimize well structure, we used 193.7 mm casing down to the top of intrusion body, facing some difficulties such as deep setting depth (7 000 m) and cementing leakage. We improved cementing slurry column structure and centralizer design, added temperature-sensitive memory plugging material into light-weight cement slurry, optimized leakproof cementing technology, and injected light-weight cement slurry from well hole. In this way, the cementation of long open hole was optimized. This technique was applied and proved effective in 5 wells by two-stage cementation in Shunbei block.
-
[1] 刘彪,潘丽娟,易浩,等.顺北含辉绿岩超深井井身结构优化设计[J].石油钻采工艺,2016,38(3):296-301. [2] 姚晓,周保中,赵元才,等.国内油气田漏失性地层固井防漏技术研究[J].天然气工业,2005,25(6):45-48. [3] 郭文猛,宋元洪,刘振通,等.正、反注水泥固井工艺在塔中油田的应用[J].内蒙古石油化工,2013,(4):10-12. [4] 李早元,支亚靓,邓智中,等.库车山前井防漏固井方法技术研究[J].钻井液与完井液,2015,32(3):55-58. [5] 桑来玉,黄李荣,张红为.油井水泥降失水剂现状与室内评价[J].钻采工艺,2002,25(4):76-80,86. [6] 桑来玉,王其春,赵艳.油井水泥高温缓凝剂DZH-2室内评价与应用[J].钻井液与完井液,2006, 23(6):47-49. [7] 刘学鹏,张明昌,冯明慧,等.复合空心微珠低密度水泥浆的研究与应用[J].石油钻采工艺,2014,36(6):39-41. [8] 程小伟,张明亮,杨永胜,等.玄武岩纤维对铝酸盐水泥石性能的影响[J].石油钻采工艺,2016,38(1):42-47. [9] 王东.塔深1井固井技术[J].石油钻采工艺,2007,29(4):23-27. [10] 刘振通,李冬,黄志刚,等.哈萨克斯坦哈德油田低压易漏层防气窜固井工艺[J].石油钻采工艺,2009,31(增刊2):23-26. -
点击查看大图
计量
- 文章访问数: 911
- HTML全文浏览量: 65
- PDF下载量: 127
- 被引次数: 0
下载:
苏公网安备32021102000780号