石油钻采工艺2016，Vol.38Issue(5)：705-708,4.DOI:10.13639/j.odpt.2016.05.030
大规模多级压裂用全通径导喷封隔器
Full-sized diverting packer for large-scale multi-stage fracturing stimulation
李博睿 1王静2
作者信息
- 1. 中国石油大庆油田有限责任公司采油工程研究院
- 2. 中国石油大庆油田有限责任公司井下作业分公司
- 折叠
摘要
Abstract
After Daqing Oilfield entered its late development stage, peripheral Fuyang Formation having low permeability has become the primary target for oil production in Daqing Oilfield. Large-scale multi-stage fracturing techniques have been deployed to enhance productivity of individual wells to develop hardly reachable reserves. Currently, fracturing strings with staged slide-sleeve structures are used extensively in Daqing Oilfield. However the decrease of slide sleeves in diameter usually results in chocking energy loss around joints, potentially restricting discharging capacity. To eliminate energy loss related to pipe strings with reduced diameters, full-sized multi-stage diverting packers for fracturing stimulation have been developed, and by calculating chocking loss, proper diam-eters can be determined to achieve the maximum discharging capacity. ABAQUS finite-element software was applied to simulate and analyze contact stress among rubber barrel and casing to achieve desirable sealing performances. Laboratory oil immersion experiments confirmed the temperature resistance, pressure resistance and fatigue performances of these packers. By now they have been deployed in 4 wells, delivering a success rate of 100%. This indicates that the innovative full-sized fracturing technology is practicable for large-scale fracturing stimulation with high capacity and efficiency.关键词
全通径/封隔器/大排量/多级压裂Key words
full-size/packer/high capacity/multi-stage fracturing分类
能源科技引用本文复制引用
李博睿,王静..大规模多级压裂用全通径导喷封隔器[J].石油钻采工艺,2016,38(5):705-708,4.
