石油钻采工艺Issue(4)：30-33,4.DOI:10.13639/j.odpt.2014.04.008
准噶尔盆地环玛湖凹陷钻井提速技术
ROP enhancing technology for circum-mahu lake depression in Junggar Basin
摘要
Abstract
The circum-Mahu depression of Junggar is a complex pressure system; its regional pressure changes greatly; conglomer-ates have grown at base of Badaowan Formation with a thicknes of 100-350 m and poor drillability, leading to low ROP and long drilling period, which greatly hinders the exploration progress in circum-Mahu area. Since 2012, according to the drilling geological characteris-tics of this block, efforts have been made to tackle the technical difficulties in drilling acceleration, and a complete set of techniques have been developed for drilling acceleration through such measures as optimization of wellbore configuration and effective PDC drill bits, using lost circulation prevention drilling fluid system and using auxiliary accelerating tools. In 20 wells to which these techniques have been applied, the average rate of penetration was 6.29 m/h, up by 63.4%; drilling period was 72.29 d, shortened by 37.2%, and downhole trouble rate were 1.13%, down by 72.9%. Field application showed that the techniques for drilling acceleration have improved the ROP, shortened the drilling period and reduced the downhole troube rate. So, the above technical measures are worth promoting.关键词
准噶尔盆地/钻井技术/机械钻速/井身结构/钻头选型/动力钻具Key words
Junggar Basin/drilling technology/rate of penetration (ROP)/well configuration/drilling bit optimization/power drill分类
能源科技引用本文复制引用
王海涛,张伟,王国斌,甘仁忠,李君,张雪飞..准噶尔盆地环玛湖凹陷钻井提速技术[J].石油钻采工艺,2014,(4):30-33,4.基金项目
中石油股份公司钻井科研项目“环玛湖凹陷低渗储层钻井提速技术研究及昌吉油田致密油藏开发先导试验钻井技术研究”。 （）
