摘要
渤中25-1油田是典型的海上低渗透油田,为加快该油田低渗储量的有效动用,针对海上大型压裂施工作业难点,采取相应技术对策,以钻井平台为载体,通过压裂参数优化设计,使用哈里伯顿水平井完井分段压裂工具,国内海上首次成功地对该油田2口套管完井的水平井完成了3~5段的压裂改造。压后采用Φ6 mm油嘴放喷排液,投产初期日产油分别为109 m3和109.8 m3,增产倍比分别是同构造、同层位邻井直井的5倍和8倍,增产效果明显,为高效、经济开发海上低渗透油气藏提供了经验。
BZ 25-1 is a typical offshore low permeable oilfield. In order to accelerate the effective use of low permeability reserves in this field,the corresponding technical countermeasures have been taken against the difficulties in large-scale hydraulic fracturing operation in the sea,and the drilling platform was used as a carrier. Through the optimization design of fracturing parameters,Halliburton horizontal well staged fracturing tools were adopted,by which three to five stages of fracturing were successfully conducted for the offshore horizontal well of two casing completion wells in the field for the first time domestically. At the early stage of postproduction,liquid flew back to the hole through Φ6 mm nozzle after fracturing,the daily oil flow rate was 109 m3 and 109. 8 m3/d,the yield ratio reached 5 and 8 times of vertical well in the same layer respectively. The effect of stimulation is obvious,which provides experience for high efficiency and economical development of offshore low permeability reservoirs.
作者
刘鹏
徐刚
陈毅
李进
徐涛
Liu Peng;Xu Gang;Chen Yi;Li Jin;Xu Tao(Tianjin Branch of CNOOC Ltd.,Tianjin,300459,China)
出处
《天然气与石油》
2018年第4期58-63,共6页
Natural Gas and Oil
基金
"十三五"国家科技重大专项"渤海油田高效开发示范工程"(2016 ZX 05058)
关键词
海上
低渗透储层
钻井平台
水平井
套管完井
分段压裂
Offshore
Low permeability reservoir
Drilling platform
Horizontal well
Casing completion
Staged fracturing
