二次加砂压裂技术在樊131区块樊134-1井的应用  

Application for secondary sand fracturing technology in well Fan134-1, Fan131 block

作　　者：刘力铭[1] 郭建春[1] 卢聪[1] 周玉龙[2] 杨竞[3] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中国石化胜利油田分公司石油开发中心,山东东营257000 [3]承德石油高等专科学校招生就业处,河北承德067000

出　　处：《油气地质与采收率》2014年第1期107-110,118,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"大型油气田及煤层气开发"(2011ZX05006-002)

摘　　要：樊134-1井存在隔层条件差、下部水层发育、天然裂缝发育和加砂困难等难题,常规压裂技术难以对其实施充分改造,根据该井储层地质特征和井况条件,确定采用二次加砂压裂技术对其储层进行压裂改造。在分析樊134-1井压裂技术难点的基础上,通过实验和理论分析,分别从加砂规模确定、二次加砂比例优化、中途停泵时间确定、压裂液和支撑剂优选与评价、降滤措施及返排措施等方面进行了研究,从而确定了二次加砂压裂施工的关键参数。于2012年11月26日对樊134-1井实施二次加砂压裂施工,施工历时189 min,累积泵入压裂液468.4 m3,支撑剂加入量为46 m3,中途停泵时间为115 min。压裂2 d后,采用3 mm油嘴自喷,产液量为27.1 t/d,产油量为13.2 t/d,增产效果显著。樊134-1井的实施效果证实,二次加砂压裂技术具有控制缝高、能够形成高导流能力裂缝、降低滤失量和加砂风险等优点,类似井可采用该技术进行压裂改造。Aiming at the challenges of poor capping rock, and in view of the development of lower aqueous layer and natural fracturesof Fan134-1 well, the research and application of secondary sand fracturing technology are conducted to the well. According to reser-voir geological features and well conditions, and based on the technical difficulties of fracturing operation on Fan134-1, the research isconducted with respect to proppant quantity, optimization of proppant ratio to the second operation, pump-stopped time, selection andevaluation of fracturing fluids and proppant, and supporting technical measures. The secondary sand fracturing operation is thereaftercarried out on November 26, 2012. The operation lasted 189 minutes with accumulatively loading of 468 m3fracturing fluids and 46 m3 proppant. The pump stopping time was 115 minutes. Three days after operation, the average fluid flowing production is achieved at27.1 t/d, and average daily oil production at 13.2 t, the stimulation effect and the economic benefit are remarkable.

关 键 词：二次加砂压裂 参数优化 控制缝高 高导流能力 降低滤失量 樊134-1井 

分 类 号：TE357.13[石油与天然气工程—油气田开发工程]