井眼清洁对长水平井井筒ECD影响分析  

Analysis of the effect of hole cleaning on ECD of long horizontal Wells

作　　者：牛天宇 龙远 李明亮 荣准 刘洋[4] Niu Tianyu;Long Yuan;Li Mingliang;Rong Zhun;Liu Yang(College of Petroleum Engineering,Yangtze University,Hubei Province,Wuhan Hubei 430100;Key Laboratory of Drilling and Production Engineering for Oil and Gas,Wuhan Hubei 430100;CNOOC Tianjin Branch,Tianjin 300450;Sichuan Northeast Gas Mine,PetroChina Southwest Oil and Gas Field Branch,Dazhou Sichuan 635000)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]油气钻采工程湖北省重点实验室(长江大学),湖北武汉430100 [3]中海石油(中国)有限公司天津分公司,天津300450 [4]中国石油西南油气田分公司川东北气矿,四川达州635000

出　　处：《石化技术》2023年第4期47-49,共3页Petrochemical Industry Technology

基　　金：长江大学第十四批大学生创新创业训练计划项目(项目编号:2021001)。

摘　　要：基于动态岩屑床模型,建立了考虑井眼清洁的长水平井井筒钻井液当量循环密度(ECD)计算方法,分析了机械钻速(ROP)和泵排量对岩屑分布的影响,以及岩屑堆积对井筒ECD的影响。结果表明,环空岩屑床厚度随着机械钻速的增大而增大,在环空返速不变的情况下,ECD会同步增大;增大泵排量能提高井眼清洁程度,井眼清洁程度较差时,小排量钻进也会导致环空ECD过大。Based on the dynamic cuttings bed model,a long horizontal well ECD calculation method considering well cleaning is established.The influence of ROP and pump rate on cuttings distribution and the influence of cuttings accumulation on wellbore ECD are analyzed.The results show that the thickness of the annulus cuttings bed increases with the increase of the ROP,and the ECD increases synchronously under the condition that the annular return rate remains unchanged.Increasing the pump rate can improve the cleanliness of the hole,but when the cleanliness of the hole is poor,the annular ECD can be too large due to small displacement drilling.

关 键 词：动态岩屑运移 井眼清洁 钻井液当量循环密度 长水平井 

分 类 号：TE243[石油与天然气工程—油气井工程]