伊朗南阿扎德甘油田Sarvak油藏产能评价及影响因素  

Productivity evaluation and influential factor analysis for Sarvak reservoir in South Azadegan oil field, Iran

作　　者：刘辉[1] 郭睿[1] 董俊昌[1] 刘莉 刘扬[1] 衣英杰[1] 

机构地区：[1]中国石油勘探开发研究院 [2]中国石油工程建设公司

出　　处：《石油勘探与开发》2013年第5期585-590,共6页Petroleum Exploration and Development

基　　金：中国石油天然气股份有限公司重大科技专项"中东地区碳酸盐岩油藏整体优化部署及提高采收率技术研究与应用"(11.2011E-2501.X.01)

摘　　要：通过伊朗南阿扎德甘油田Sarvak油藏产能评价及储集层物性参数对产能影响分析,探讨中东大型碳酸盐岩油藏油井生产规律及产能影响因素。基于Sarvak油藏试采动态,分析日产油、油压、累产油及油嘴尺寸间的关系,利用Poettman油嘴产状模型,建立了合理的产能预测模型,并通过数值模拟方法,探讨了不同物性及流体参数对产能的影响。研究表明,油井工作制度一定时,日产油与油压线性相关;工作制度调整前后的油嘴尺寸与日产油具有幂率关系;为保证3 a稳产期,衰竭开发的平均单井产能应在270 m3/d左右。Sarvak油藏为块状碳酸盐岩油藏,利用水平井开发时,层间隔夹层分布及渗透率变化是影响水平井产能的最主要因素,因此,在开发调整中,应适当采用大斜度井以减小隔夹层影响,加强酸压等措施改造以改善储集层物性。Production pattern of oil wells and influential factors on productivity for the massive carbonate reservoir in the Middle East were researched by productivity evaluation on Sarvak and analysis of properties impact on production. Based on dynamic performance of Sarvak production test, the relationship between daily oil production, tubing pressure, cumulative oil production and choke size was analyzed and reasonable productivity prediction model was established by applying Poettman model, and the effect of physical properties and fluid parameters on productivity were analyzed further by numerical simulation. The study shows that daily oil production is linearly correlated with oil pressure under certain working regime, and daily oil production is power law correlated with choke sizes before and after working regime adjustment. The average designed single well productivity should be about 270 m3/d by depletion to ensure a three-year plateau period. Sarvak is a blocky carbonate reservoir, when developed with horizontal wells, interbeds distributed between layers and permeability property have the strongest impact on production of horizontal wells. So, highly deviated wells should be used to reduce the effect ofinterbeds and acidizing should be considered to improve the reservoir physical properties.

关 键 词：中东 Sarvak油藏 大型碳酸盐岩油藏 产能评价 影响因素 

分 类 号：TE344[石油与天然气工程—油气田开发工程]