探矿工程-岩土钻掘工程2019，Vol.46Issue(2)：50-54,5.DOI:10.12143/j.tkgc.2019.02.009
新和地1井复杂地层水泥封孔护壁造斜技术
Cement plugging and side-tracking in complex formation at well Xinhedi-1
肖长城 1贾中芳 1高士彬 1李明1
作者信息
- 1. 核工业二一六大队, 新疆 乌鲁木齐 830011
- 折叠
摘要
Abstract
A broken section of great thickness was encountered in well Xinhedi-1 during drilling from 1314.00 mto1419.98 m.The formation was highly broken with a large dip angle, and rich in aquifers.Falling stones and water sensitive collapse of the borehole wall were much serious.During the drilling operation, the drilling tools cannot be lowered into the borehole bottom due to the large resistance in the hole.Borehole incidents occurred frequently, and it was difficult to drill through the broken section.In order to deal with the borehole incident and to drill through the broken formation, cement plugging and side tracking were adopted in these zones.Influenced by the complex factors of the hole, especially the dilution of the drilling mud and the erosion resulted by the water systems in the broken belt from 1358.76 mto 1396.46 m, cement plugging failed early for many times, which wasted a lot of materials and the drilling time.A set of specific and practical measures were developed through field testing, which solved the technical difficulties of the cement plugging in the field, and improved the success rate of the wall protection with cement plugging and side tracking, providing reference for similar construction in the future.关键词
深孔钻探/水泥封孔/护壁造斜/复杂地层Key words
deep hole drilling/cement plugging/borehole wall protection and side tracking/difficult formation分类
天文与地球科学引用本文复制引用
肖长城,贾中芳,高士彬,李明..新和地1井复杂地层水泥封孔护壁造斜技术[J].探矿工程-岩土钻掘工程,2019,46(2):50-54,5.
