长水平井不同钻井液性能下岩屑运移规律研究  

Researchon Movement Regularity of Cuttings under Different Drilling Fluid Properties in Long Horizontal Wells

作　　者：刘丹婷 王旭东 高彦哲 韩雪莹 Liu Danting;Wang Xudong;Gao Yanzhe

机构地区：[1]中石化西南石油工程有限公司钻井一分公司 [2]中石油西南油气田公司页岩气研究院 [3]天津科技大学电子信息与自动化学院 [4]长江大学机械工程学院,434023

出　　处：《工程机械》2023年第8期25-31,I0020,共8页Construction Machinery and Equipment

摘　　要：长水平井在钻井过程中,岩屑颗粒受到自身重力作用极易沉积到钻杆下方的低速区形成岩屑床,造成卡钻、机械钻速降低及钻具断裂等事故,严重影响钻井的安全和提速提效。基于Fluent软件,建立欧拉固液两相流模型并进行仿真,分析不同钻井液性能对携岩效率的影响。研究结果表明:钻井液的性能会对环空中岩屑体积分数产生较大的影响。During drilling process of long horizontal wells,the cuttings particles are easily deposited into the low velocity zone below the drill pipe due to their own gravity to form a cuttings bed,which causes accidents such as sticking,drilling speed dropping and drilling tool breaking,and seriously affects the drlling safety,speed and efficiency.Based on softwareFluent,a Euler solid-liquid two-phase flow model is established for simulation to analyze the influence of different drlling fluid properties on cuttings transport efficiency.The research results show that the properties of drilling fluid have a great impact on the volumefraction of cuttings intheannulus.

关 键 词：长水平井 岩屑床 携岩效率 钻井液性能 

分 类 号：TE243[石油与天然气工程—油气井工程]