摘要
以建立适用于火山岩气藏压裂水平井产能预测模型来指导气藏开发为目的,对火山岩气藏压裂裂缝间干扰对水平井产能的影响进行研究。火山岩气藏压裂水平井产能的预测方法要综合考虑气体滑脱效应、启动压力梯度、应力敏感效应及裂缝内的紊流效应,水平井产能的持续依赖于裂缝间的干扰程度。在王志平等人提出的火山岩气藏水平井压裂多条横向裂缝任一横向裂缝的产能预测模型基础上,研究裂缝间干扰对水平井产能的影响。最终建立了裂缝间存在干扰的产能模型,并提出裂缝间干扰系数的概念,形成了新的火山岩气藏水平井压裂产能模型,指出产能的变化趋势取决于干扰系数的变化趋势;通过编程,用实际水平井的产能对模型进行验证,证实此模型预测产能与实际产能吻合较好。
To study the interference between volcanic gas reservoir fracturing effects on horizontal well productivity is for establishing the model of volcanic rock gas reservoir fracturing of horizontal well productivity prediction, which can help conduct exploitation. The way of volcanic rock gas reservoir fracturing of horizontal well productivity prediction need to comprehensively consider the gas slippage effect and threshold pressure gradient and stress sensitivity effect and the turbulence effect inside the cracks, horizontal well production capacity of continuous depends on the degree of inter- ference between the cracks. This article is based on Wang＇ s volcanic rock gas reservoir horizontal well fracturing productivity prediction model of multiple lateral either transverse cracks, on the basis of ing the effect of interference on horizontal well productivity between cracks. Finally, cracks be-tween interference capacity model is set up, and the paper puts forward the word interference coefficient, the gap formed a new model of volcanic rock fracturing horizontal well productivity. The paper points out that the change trend of capacity depends on the change trend of interference coefficient. Through programming, with the actual capacity of horizontal well to verify this model, the paper confirms that using this model to predict production capacity is in good agreement with the actual capacity.
出处
《承德石油高等专科学校学报》
CAS
2017年第1期14-17,31,共5页
Journal of Chengde Petroleum College
基金
国家杰出青年科学基金项目(流动地震台阵研究地球内核结构):41125015
国家自然科学基金(五大连池地区深部结构探测研究):41474040
关键词
火山岩气藏
裂缝干扰
干扰系数
volcanic gas reservoirs
crack interference
interference coefficient
