基于新型中压堵漏试验仪的堵漏试验研究
投稿时间：2016-05-04  修订日期：2017-01-10  点此下载全文
引用本文：杨宽才,王兴乐,梁丽,等.基于新型中压堵漏试验仪的堵漏试验研究[J].钻探工程,2017,44(2):49-52.
YANG Kuan-cai,WANG Xing-le,LIANG Li,et al. Lost Circulation Tests Based on New Type Medium Pressure Lost Circulation Simulator[J]. Drilling Engineering, 2017,44(2):49-52.
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作者单位E-mail
杨宽才 河南省地矿局第四地质勘查院 157099086@qq.com 
王兴乐 中交第四航务工程勘察设计院有限公司  
梁丽* 河南省地矿局第四地质勘查院 121261810@qq.com 
孔二伟 河南省地矿局第四地质勘查院  
李大鹏 河南省地矿局第四地质勘查院  
蔡记华 中国地质大学（武汉）  
基金项目:中国石油科技创新基金项目“纳米材料增强页岩气水平井井壁稳定性的作用机理研究”(编号：2014D-5006-0308)；湖北省自然科学基金重点项目“水基钻井液增强页岩气水平井井壁稳定性的理论与方法”(编号：2015CFA135)
中文摘要:堵漏试验仪是制定防漏堵漏技术方案的关键实验设备之一。针对现有堵漏试验仪普遍存在的结构复杂、试验流程繁冗、浆液用量较大、数据重现性较差等问题，设计了一种中压（试验压力为0～1 MPa）堵漏试验仪。该装置能模拟1～3 mm的条缝型漏失地层和1～4 mm的孔洞型漏失地层，封板（缝板和孔板）的实际漏失面积为0.35～2.79 cm2，孔隙率1.81%～14.24%。基于该试验装置，获取了由膨胀堵漏剂、核桃壳等组成的适于不同漏失地层的堵漏浆液配方。研究发现，堵漏浆液的封堵效果不仅取决于裂缝或孔洞的大小，也要考虑其孔隙率。该堵漏仪及堵漏浆液配方可为钻井防漏堵漏工作提供有益参考。
中文关键词:中压堵漏试验仪  漏失地层  孔隙率  堵漏浆液
 
Lost Circulation Tests Based on New Type Medium Pressure Lost Circulation Simulator
Abstract:Lost circulation simulator is one of the key apparatus to formulate technical plans for lost circulation prevention and plugging. This new type medium pressure (0-1MPa) lost circulation simulator was designed to improve the complex structure, tedious test procedures, large volume mud and low data reappearance of existing lost circulation simulators. With this device, 1-3mm fracture leakage formation and 1-4mm cavern leakage formation can be simulated. The actual leakage area is totally 0.35-2.79cm2 with porosity of 1.81%-14.24%. By using this experimental device, the plugging slurry formulas, being composed of swelling plugging agents and walnut shells, etc., is obtained, which is suitable for different leakage formations. The sealing effect of plugging slurries not only depends on the size of fractures or cavern, but also on the total porosity of leakage formation. This lost circulation simulator and the plugging slurry formula can offer beneficial reference for lost circulation prevention and plugging in drilling process.
keywords:medium pressure lost circulation simulator  leakage formation  porosity  plugging slurry
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