海上小井眼大通径一次多层压裂充填工具研究  

Research on One-trip Multi-layer Fracture Packing Tool with Large Bore Size in Offshore Slim Hole

作　　者：王明杰 包陈义 左凯 陈胜宏 孙晓锋 严孟凯 闫绅 WANG Mingjie;BAO Chenyi;ZUO Kai;CHEN Shenghong;SUN Xiaofeng;YAN Mengkai;YAN Shen(CNOOC Ener Tech-Drilling&Production Co.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《石油矿场机械》2021年第3期87-92,共6页Oil Field Equipment

基　　金：中国海洋石油总公司科技项目“完井防砂系列工具研制(三期)”(CN00C-KJ135KJXM NFGJ2016-01)。

摘　　要：渤海蓬莱油田平均每年进行约50口井的侧钻井作业,采用177.8 mm尾管射孔的小井眼完井技术和单层压裂充填防砂工艺,保证其防砂效果和油井产能。但是,单层逐级压裂充填防砂的整体时效性差、费用高。现有的一次多层压裂充填防砂技术存在管柱通径小、细分层数少、压裂充填排量受限等不足。以177.8 mm小井眼完井为例,研制了一种通径为98.55 mm的1次6层及以上细分层系压裂充填防砂管柱及配套工具。对往复运动承压的密封模块等关键工具进行了强度分析和室内试验。试验结果表明,该工具的各项技术参数可以满足蓬莱油田的作业需要,且优于国内外同类工具,具有良好的应用前景。On average about 50 wells were sidetracked every year in Penglai oilfield of Bohai.The 177.8 mm tail pipe perforation completion of single layer fracture packing sand control were basically used to ensure sand control effect and oil production capacity.However,the overall timeliness of single-layer fracturing and sand control is poor with high cost.The existing sand control technology of multi-layer fracturing have the disadvantages such as smaller pipe column path,less subdivision layers,limited pump rate.Taking Penglai 177.8 mm slim hole completion as an example,A one-trip six layers or more subdivision fracture packing sand control string and tool with 98.55 mm bore size was develoved.The strength analysis and lab experiments were carried out for key tools such as reciprocating and pressurized seal modules.The test results show that the various technical parameters of the tool can meet the operational needs of the Penglai oilfield,and are better than similar tools at home and abroad,with good application prospects.

关 键 词：小眼井 分层压裂 压裂充填防砂 工具 

分 类 号：TE934.203[石油与天然气工程—石油机械设备]