CAJ | 학술논문

DH油田1岩性段地层压力亏空大、注水压力高,急需采取有效的降压增注措施。针对1岩性段砂岩物性差、水平井段长的特点,在分析前期增注问题的基础上,开展了敏感性、润湿性、注水伤害模拟和酸化增注效果评价等室内实验,提出实现1岩性段增注的措施。对DH1-H15水平井进行多氢酸分流酸化改造,改造后注水情况表明,增注措施对DH油田1岩性段有较好的适用性。
DH유전1암성단지층압력우공대、주수압력고,급수채취유효적강압증주조시。침대1암성단사암물성차、수평정단장적특점,재분석전기증주문제적기출상,개전료민감성、윤습성、주수상해모의화산화증주효과평개등실내실험,제출실현1암성단증주적조시。대DH1-H15수평정진행다경산분류산화개조,개조후주수정황표명,증주조시대DH유전1암성단유교호적괄용성。
The formation pressure depletion of DH oilfield 1 lithology is severe,injection pressure is high.There must have some effective messures to reduce the pressure to increase the injection.Aiming at the DH oilfield 1lithology＇s characteristics of bad physical property and long horizontal section,the writer conolucted sensitivity experiment,wetting experiment,injection damage simulation experiment,valuation experiment of acidizing effection.To increase the injection on the basis of analysing the injection problem,this paper proposed the messures to increase the horizontal well＇s injection.Multi-hydracid shunting acidizing was conducted on horizontal well DH1-H15,and the post-acidizing test indicates that the messrure to increase injection proposed by this paper is applicable to DH oilfield 1 lithology.