新北油田气井选择性堵水技术研究与应用

发布时间：2018-03-17 11:05

本文选题：气井　切入点：选择性封堵　出处：《西安石油大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：针对新北油田垦东区块气井管柱积液严重、排液措施效果不理想、气井严重出水的问题对气井出水进行选择性封堵研究。针对气藏不同水侵类型选用冻胶堵边水、泡沫冻胶隔板堵底水,利用"选择性注入工艺+N2打通道技术"达到选择性堵水的目的。室内优选冻胶配方为0.4%聚合物+0.3%交联剂,评价岩心封堵率大于97%;实验室通过"气驱(测渗透率)-冻胶(注入冻胶封堵)-气驱(测渗透率)"方法评价氮气疏通气体渗流通道效果,疏通后冻胶对气相封堵率小于30%,岩心的渗透率逐渐恢复。在新北油田KD481B-9井进行矿场试验,验证了气井选择性堵水技术的可行性。
[Abstract]:In view of the serious accumulation of fluid in gas well string in Kendong block of Xinbei Oilfield and the unsatisfactory effect of drainage measures, the selective plugging of gas well effluent is carried out in view of the problem of serious effluent from gas well. According to different types of water invasion in gas reservoir, gel-plugged edge water is selected. The foam gel separator is used to block the bottom water, and the selective injection process N2 channel technique is used to achieve the purpose of selective water shutoff. The optimum formula of the gel is 0.4% polymer 0.3% crosslinker, Evaluating the plugging rate of core is greater than 97, the effect of nitrogen dredging gas flow channel is evaluated by the method of "gas drive (measuring permeability and gelling)", the method of "injection gel plugging and gas drive (measuring permeability)" is used to evaluate the effect of nitrogen dredging gas flow channel. After dredging, the gas plugging rate of the gel is less than 30%, and the permeability of the core gradually recovers. The feasibility of selective water plugging technology of gas well is verified by field test in KD481B-9 well of Xinbei Oilfield.
【作者单位】：中国石油大学(华东)石油工程学院;山东石大油田技术服务股份有限公司;中国石化胜利油田分公司海洋采油厂;
【基金】：国家自然科学基金青年项目(51404288)
【分类号】：TE37

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