岩性油气藏 ›› 2026, Vol. 38 ›› Issue (5): 191200.doi: 10.12108/yxyqc.20260518
• 石油工程与油气田开发 • 上一篇
李新泽1(
), 吴浩1, 晁嘉豪2, 李娜1(
), 王苏冉1, 白玉湖1, 冯汝勇1, 程加陆3
LI Xinze1(
), WU Hao1, CHAO Jiahao2, LI Na1(
), WANG Suran1, BAI Yuhu1, FENG Ruyong1, CHENG Jialu3
摘要:
深层煤层气在开采过程中,单井产量差异大,产能预测较困难。以鄂尔多斯盆地神府区块二叠系太原组煤层气实际生产资料为基础,按照“数据净化-规律挖掘-模型构建”的研究路径,开展了产能评价与预测方法研究。研究结果表明:①鄂尔多斯盆地神府区块生产井存在“高产-递减”、“上产-稳产-递减”和“排水-上产-稳产-递减”3种典型产能类型,其中“排水-上产-稳产-递减”是该区深层煤层气井的主要产能类型。②利用产能主控因素动态筛选方法,融合渗流理论中参数对产能的单调性约束机制,构建了兼顾数据规律与渗流机理的产能预测模型。③产能主控因素呈现动态演化特征,初期产能主要受地质因素控制,稳产期产能受工程因素影响显著;融合物理约束的随机森林预测模型的预测精度达86%,较传统多元线性经验公式的预测精度提高了64.5%;根据模型预测结果提出的工程优化策略可提升区块单井产量近2倍。
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