石油钻采工艺2016，Vol.38Issue(2)：181-185,5.DOI:10.13639/j.odpt.2016.02.010
超长跨距多点起爆负压射孔技术在海上油田的应用
Application of negative-pressure perforation technique with multiple igniters over super-long span in offshore oilfields
曾春珉 1韦龙贵 1黄亮 1冯雪松 2简成2
作者信息
- 1. 中海石油 中国 有限公司湛江分公司
- 2. 中海油能源发展股份有限公司工程技术湛江分公司
- 折叠
摘要
Abstract
Pipe strings for existing multi-stage perforation techniques are characterized by complicated structures, low detonation efficiencies, poor reliability, high operation costs and difficulties in their application in negative-pressure perforation. Consequently, applicability of such pipe-strings in offshore oilfields is limited. In this regard, conventional single-stage perforation devices were modified to develop multi-stage perforation devices. Combined with bypassing joints, hydraulic delayed igniter, RTTS packer and other tools, the negative-pressure perforation technique with multiple igniters over super-long span was developed. Through the integral slid sleeve, the multi-stage perforation device can generate negative pressures after detonation of multiple igniters. In this way, all target intervals can be perforated in one single trip under negative pressure to satisfy demands related to perforation in multiple intervals with significant interval distances (above 500 m). The newly developed device is characterized by simplified structures, safety, reliability. The device has been successfully deployed in 6 wells in Weizhou A Oilfield in western part of South China Sea. These operating time increased by 51.3% and costs decreased by 17.68%.关键词
超长距离/长夹层段/多层段/负压射孔/海上油田Key words
super-long span/long interbedded interval/multiple intervals/negative-pressure perforation/offshore oilfields分类
能源科技引用本文复制引用
曾春珉,韦龙贵,黄亮,冯雪松,简成..超长跨距多点起爆负压射孔技术在海上油田的应用[J].石油钻采工艺,2016,38(2):181-185,5.
