【摘 要】
:
对稠油井蒸汽吞吐开发过程中普遍存在的油层吸汽剖面不均匀、油藏动用程度差等问题,采取了机械调剖和化学调剖两种方法,其中机械调剖工艺有选层分注合采工艺、投球选注合采工艺
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对稠油井蒸汽吞吐开发过程中普遍存在的油层吸汽剖面不均匀、油藏动用程度差等问题,采取了机械调剖和化学调剖两种方法,其中机械调剖工艺有选层分注合采工艺、投球选注合采工艺和选层分注分采工艺。进行机械调剖的井,同本并上周期相比,注汽压力平均提高2~3MPa,投入产出比为1:74.1;而高温化学调剖堵剂和高温发泡剂,经现场应用表明,具有优良的注入选择性,经施工压力和注入速度的合理控制,使调剖剂优先进入汽窜层或高渗透层,其投入产出比为1:5.14。
In the process of heavy oil well steam huff and puff development, there are two kinds of methods, mechanical profile control and chemical profile control, in which the profile of oil vapor absorption is ubiquitous and the degree of reservoir utilization is poor. Mining technology, pitching election election mining technology and election points sub-points mining technology. Mechanical well profile of the well, compared with this and last cycle, steam injection pressure increased by an average of 2 ~ 3MPa, input-output ratio of 1: 74.1; and high temperature chemical profile control plugging agent and high temperature foaming agent, the scene Application shows that with good injection selectivity, the pressure control and injection rate of the reasonable control of profile control agent priority into the steam channeling or high permeability layer, the input-output ratio of 1: 5.14.
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