摘要
通过分析认为,中高渗油藏和低渗气藏中纵向裂缝有利于产能提高,低渗油藏中多条横向裂缝有利于产能提高。深穿透射孔能减少射孔孔眼应力集中,降低裂缝的复杂程度。低渗储层射孔方案是将生产射孔变为压裂射孔,缩短射孔段长度,避免多裂缝产生,从而提高施工成功率。
Through the study of reservoir engineering and in-suit stress demonstrates that in medium-high permeability reservoir longitudinal fracture is favor of elevating yield, in low permeability reservoir, creating multiple transverse fracture is more beneficial, while in low-permeability gas reservoir, for Non-Darcy effect longitudinal fracture is favor. Through conducting study of perforating influence on the fracture pattern shows that deep-penetration perforation can diminish stress concentration around the perforation tunnel, which lowers the extent of complex of fracture. For low permeability reservoir, it will make production perforation turn into fracture perforation and reduce perforation length to improve success rate.
出处
《重庆科技学院学报（自然科学版）》
CAS
2010年第2期56-59,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
关键词
水平井
水力压裂
油藏工程
地应力场
射孔
horizontal well
hydraulic fracturing
reservoir engineering
in-situ stress field
perforating
