沁南煤层气井压裂施工曲线分析

发布时间：2018-01-10 21:15

  本文关键词：沁南煤层气井压裂施工曲线分析　出处：《河南理工大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

  更多相关文章： 煤层气 压裂施工曲线 排采

【摘要】：为研究不同类型煤层气井压裂施工曲线所揭示的储层特征和施工情况,对沁水盆地南部郑庄樊庄区块的230口煤层气井的压裂施工曲线进行对比分析,结合油压、排量、砂比的相互影响关系,对压裂施工阶段进行分类。前置液阶段分为阶梯排量型曲线和稳定排量型曲线,携砂液阶段大体分为压力稳定型、压力波动型、压力上升型、压力下降型等4类曲线,顶替液阶段主要为压力上升型曲线。对不同压裂曲线反映出的工程原因和地质内涵进行分析,结合实际排采资料,对不同类型压裂曲线产气效果进行评价,认为稳定型≈下降型波动型≈上升型。
[Abstract]:In order to study the reservoir characteristics and operation conditions revealed by fracturing curves of different types of coalbed methane wells, the fracturing operation curves of 230 coalbed methane wells in Zhengzhuang Fanchang block in the south of Qinshui Basin are analyzed. Combined with the interaction of oil pressure, discharge rate and sand ratio, the fracturing stage is classified. The pre-fluid stage is divided into stepped displacement curve and stable displacement curve, and the sand carrying fluid stage is generally classified into pressure stable type. Pressure fluctuation type, pressure rising type, pressure falling type are four kinds of curves, and the displacement fluid stage is mainly pressure rising type curve. The engineering cause and geological connotation reflected by different fracturing curves are analyzed. Combined with the actual production data, the gas production effect of different fracturing curves is evaluated, and it is considered that the stable type 鈮，

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