四川盆地页岩气井地面安全返排测试技术_刘飞

四川盆地页岩气井地面安全返排测试技术

刘

飞1，2，王勃3

，潘登2，曾小军2，庞东晓

2（1．成都理工大学能源学院，成都610059；2．川庆钻探工程有限公司钻采工程技术研究院，四川广汉618300；3．中国石油勘探开发研究院廊坊分院，河北廊坊065007）

摘要：针对页岩气藏大规模加砂压裂后地面连续返排测试作业以及钻塞冲砂作业期间，返排液

含大量砂粒和碎屑，地面返排测试流程易发生堵塞或刺漏，安全风险高等问题，完善地面流程布局，优化设计出专用排砂管线和测试管线，研发配套了105MPa 捕塞器、105MPa 旋流除砂器、105MPa 管柱式除砂器等系列除砂除屑装备，在此基础上开展相关的工艺技术研究，确定出不同返排测试工况条件下流程的最优走向，形成了一套集除砂除屑、流程超压保护、防冰堵和安全监控为一体的页岩气井地面安全返排测试工艺技术，解决了页岩气井地面返排测试作业面临的高回压条件下钻塞捕屑、除砂、大排量连续返排等技术难题，运用该技术安全高效地完成了四川盆地多口页岩气井的地面测试计量作业，保障了页岩气井返排测试期间地面流程设备和作业人员的安全，效果显著．

关

键

词：四川盆地;页岩气;地面流程;控压;除砂;连续返排测试技术

中图分类号：TE358+

．5文献标识码：A 文章编号：1673-9787（2013）01-0030-05Surface flow-back test technology of shale gas in Sichuan basin

LIU Fei 1，2

，WANG Bo 3，PAN Deng 2，ZENG Xiao-jun 2，PANG Dong-xiao 2

（（1．College of Energy Resources ，Chengdu University of Technology ，Chengdu 610059，China ；2．Drilling and production technology Research In-stitute ，CHUAN-QING Exploration Drilling Engineering Corporation ，Guanghan 618300，Sichuan ，China ；3．Langfang Branch ，PetroChina Ex-ploration ＆Development Research Institute ；Langfang 065007，Hebei ，China ）

Abstract ：The shale gas reservoirs mainly rely on horizontal well technology and large －scale separated －layer fracturing technique to enhance productions．Formation sand producing severely after large －scale sand fractu-ring or during the course of milling the bridge －plug led to a high risk of the surface flow －back test of the shale gas well．Thusly ，in order to solve the problems of catching plug debris ，removing sand and achieving continuous high rate flow －back under high wellhead pressure ，the new flow －back and well testing plans are designed．Two sand clearance lines are designed for flow －back operations ，and self －developed equipment such as 105MPa plug catcher and 105MPa cyclone desander are put into use ，which ensure the sand removing efficiency and the smooth flow of the surface flow lines．On that basis ，the corresponding technologies are de-veloped ，eventually forming a set of unique surface flow －back test technology for shale gas ，including ice blockage prevention ，overpressure protection and security monitoring technologies．A lot of flow －back tests of shale gas wells have successfully completed in Sichuan basin by using such technology．

Key words ：Sichuan basin ；shale gas ；surface layout ；pressure control ；sand remove ；continuous surface flow-

第32卷第1期2013年2月河南理工大学学报（自然科学版）

JOURNAL OF HENAN POLYTECHNIC UNIVERSITY （NATURAL SCIENCE ）Vol．32No．1Feb．2013

收稿日期：2012-10-25作者简介：刘飞（1980—），男，四川成都人，博士生，工程师，长期从事常规天然气与页岩气储层评价与试油测试工艺技术研究．

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