连续管调制局部欠平衡钻井试验系统研究  

Research on Experimental System for Partial Underbalanced Drilling by Coiled Tubing

作　　者：陈安明 陈振良 史怀忠[2] 赵贺谦 史晓梅 Chen Anming;Chen Zhenliang;Shi Huaizhong;Zhao Heqian;Shi Xiaomei(Sinopec East China Petroleum Engineering Company;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum（Beijing)

机构地区：[1]中石化华东石油工程有限公司 [2]中国石油大学(北京)油气资源与探测国家重点实验室

出　　处：《石油机械》2018年第9期24-28,共5页China Petroleum Machinery

基　　金：国家自然科学基金项目"连续管调制局部欠平衡钻井水力特性研究"(51474232)

摘　　要：连续管调制局部欠平衡钻井可以有效控制井底近钻头环空压力,在实现近钻头局部欠平衡钻井的同时保障了封隔器以上井眼稳定。为了研究该钻井技术的井底欠平衡情况及循环压耗变化规律,设计并研制了连续管调制局部欠平衡钻井试验系统,初步进行了压力分布及微环空岩屑运移测试。分析结果表明:主要由试验架、回流装置和旋转密封排岩装置等组成的连续管调制局部欠平衡钻井试验装置,能够模拟连续管调制局部欠平衡钻井过程;该试验系统可进行井底近钻头压差变化规律、近钻头钻井液携岩规律以及微环空钻井液携岩规律研究。所得结论可为连续管调制局部欠平衡钻井技术的现场应用提供参考。Coiled tubing modulation locally underbalanced drilling can effectively control the near bit annular pressure at the bottom of the well, and ensure the stability of the borehole above the packer at the same time as the near bit underbalanced drilling is realized. In order to study the underbalance situation of the drilling technology and the law of cyclic pressure loss, the experimental system and device of the continuous tube modulation partial underbalanced drilling were designed and developed, and the pressure distribution and the micmspace debris migration test were preliminarily carried out. The analysis results show that the continuous tube modulated local underbalanced drilling test device is mainly composed of test frame, reflux device, rotating sealed rock drainage device and so on. It can simulate the local underbalanced drilling process of continuous tube modulation, and the test system can carry on the change law of the pressure difference near the bit near the bottom of the well, the law of the near bit drilling fluid carrying rock and the micro drilling fluid. Study on the law of carrying rock in annular drilling fluid. The conclusions can provide reference for the field application of continuous pipe modulated partial underbalanced drilling technology.

关 键 词：连续管调制 局部欠平衡 试验系统 微环空 回流装置 压力分布 

分 类 号：TE921[石油与天然气工程—石油机械设备]