超深特高含硫边水气藏气驱水突破压差

发布时间：2018-04-17 22:31

本文选题：高含硫边水气藏 + 突破压差　；参考：《断块油气田》2017年06期

【摘要】：在高含硫碳酸盐岩储层有水气藏的开发中,由于边底水沿裂缝或高渗条带突进,造成气井在水侵层位、水侵量等方面差异较大,气井见水后储层水锁情况复杂,导致气井产能和储量受到损失,更有高产水气井近井地带水锁停产,严重影响气藏稳产期和最终采收率;因此,这就需要定量研究气井储层水锁突破压差,明确解除水锁的条件,以针对性地制定水淹气井复产措施。采用多功能驱替系统,进行气驱水突破压差实验,研究了不同储层物性、不同水锁状态下突破压差变化规律。通过幂函数对实验结果进行回归,建立气井突破压差预测模型,定量预测不同渗透率和含水饱和度储层的突破压差。
[Abstract]:In the development of water-bearing gas reservoirs in carbonate reservoirs with high sulfur content, due to the edge and bottom water protruding along fractures or high permeability zones, there are great differences in water invasion layer and water invasion amount in gas wells, and the water locking situation of gas wells after water discovery is complex.As a result, the productivity and reserves of gas wells are lost, and the water lock production is stopped in the near well area of high-yield water gas wells, which seriously affects the stable production period and final recovery of gas reservoirs, therefore, it is necessary to quantitatively study the breakthrough pressure difference of water lock in gas wells.The condition of releasing water lock is clear, and the measures of water flooded gas well production are worked out.By using multi-function displacement system, the experiment of gas drive water breakthrough pressure difference is carried out, and the variation law of breakthrough pressure difference under different reservoir physical properties and different water lock state is studied.The experimental results are regressed by power function, and the prediction model of breakthrough pressure difference in gas wells is established, and the breakthrough pressure difference of reservoirs with different permeability and water saturation is quantitatively predicted.
【作者单位】：中国石化中原油田普光分公司;重庆科技学院;
【基金】：国家科技重大专项专题“深层礁滩相储层气水两相渗流特征研究”(2016ZX05017-001-HZ02)
【分类号】：TE377

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