徐深气田火山岩气藏特征与开发对策  

Characteristics of volcanic gas reservoirs and their development strategies in the Xushen Gas Field,Songliao Basin

作　　者：徐正顺[1] 房宝财[1] 

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院

出　　处：《天然气工业》2010年第12期1-4,共4页Natural Gas Industry

基　　金：中国石油天然气股份有限公司项目"徐深气田开发技术研究"(040144)部分成果

摘　　要：松辽盆地徐深气田是中国石油大庆油田有限责任公司2002年发现、2005年探明的,主要气藏类型属于火山岩气藏。为了有效开发该类气藏,先后开展了露头勘测、密井网解剖以及长井段取心等研究,研究成果证实:大庆地区火山岩气藏在地质上具有储层岩性、岩相类型多样,平面和纵向变化快,非均质性强,气藏受构造和岩性双重控制,气水关系复杂等特征。对徐深气田试气、试采和试验区开发动态跟踪研究的结果显示:该类火山岩气藏在开发动态方面具有气井早期产能差异大、平面分布不均衡,单井控制的动态储量差异大,出水类型复杂多样等特征。通过综合地质、气藏工程、压裂工艺等多学科研究成果,结合火山岩气藏储层描述、地质建模、产能评价、水平井开发优化设计以及压裂增产等方面的实践成果,形成了一套适用于该区火山岩气藏的开发对策:①深化火山岩气藏地质规律认识;②开展产能评价技术研究,完善技术手段;③优化直井设计,实现Ⅰ、Ⅱ类储层区块有效开发;④"整体考虑,分类治理",实现有效控水;⑤开展水平井开发技术攻关,探索火山岩气藏开发新模式。Volcanic reservoirs are the main gas reservoir type in the Xushen Gas Field,Songliao Basin,which was discovered in 2002 and explored in 2005.In order to effectively develop such volcanic gas reservoirs there,we conducted studies of outcrop surveying,dense well pattern,long interval coring,etc.,the results of which confirmed that those volcanic gas reservoirs in the Daqing area are characterized by various types and rapid horizontal and vertical changes in lithology and lithofacies,strong heterogeneity,duplex control by structure and lithology,and a complcated relationship between gas and water.Moreover,the studies of development performance analysis of well test,trial production,and pilot tests in the Xushen Gas Field demonstrated that the development of such volcanic gas reservoirs there are featured by a big difference in well to well deliverability at the early stage,great divergence in dynamic reserves of a single well,and complicated and various types of watering out,etc..Based on many research achievements in geology,gas reservoir engineering,and fracturing,etc.,in combination with successful field practices in aspects of reservoir description,geological modeling,productivity assessment,optimal horizontal well drilling design,and simulation by fracturing,development strategies adaptable for the development of volcanic gas reservoirs in the Xushen Gas Field are worked out as follows: a.the geological law of volcanic gas reservoirs is to be more and better known than before;b.technologies and methods on productivity assessment are to be more developed and improved;c.vertical well design is to be optimized and both type-Ⅰand-Ⅱ reservoirs are to be developed effectively;d.watering out is to be under control by the principle of 'classified governance while considering as a whole';e.the horizontal well technology is to be improved and new means to be explored for the development of volcanic gas reservoirs.

关 键 词：松辽盆地 徐深气田 火山岩气藏 地质特征 开发特征 开发对策 优化直井设计 水平井开发技术 

分 类 号：P618.13[天文地球—矿床学]