国内外大型碳酸盐岩气藏主要开发评价指标  

Study on the development laws of large-scale carbonate gas reservoirs at home and abroad

作　　者：孙玉平 陆家亮[2] 刘海[2] 万玉金[2] 唐红君[2] 张静平[2] 

机构地区：[1]中国科学院大学 [2]中国石油勘探开发研究院

出　　处：《天然气勘探与开发》2017年第4期59-64,共6页Natural Gas Exploration and Development

基　　金：中国石油天然气集团公司科技部支持项目"多气源天然气经济性分析与供气规模研究"(编号:2016B-1506)

摘　　要：以四川盆地元坝气田上二叠统长兴组气藏和安岳气田磨溪区块下寒武统龙王庙组气藏等一批大型碳酸盐岩气藏的勘探发现为标志,我国大型碳酸盐岩气藏勘探开发进入了新阶段。然而由于碳酸盐岩气藏特殊的成藏过程使得该类气藏地质条件复杂,开发面临的不确定性大,不同气田开发效果差异较大。为科学开发碳酸盐岩气藏,以国内外开发成熟的不同类型碳酸盐岩气藏为解剖对象,剖析了典型气藏开发效果之间的差异及影响因素,归纳出影响碳酸盐岩气藏开发特征的主控因素,在细分气藏类型的基础上,提出了不同类型气藏开发指标推荐取值。结论认为,影响碳酸盐岩气藏开发效果的主要因素为驱动类型、储层物性、裂缝发育程度及气藏管理措施,基于开发主控因素将碳酸盐岩气藏细分为弹性气驱、孔隙型水驱、裂缝型边水驱和裂缝型底水驱4个亚类;通过统计分析提出了可采储量采气速度、稳产期、递减率和采收率等开发指标,可为国内类似气藏得科学开发提供参考。As a batch of large-scale carbonate gas reservoirs are explored and discovered, e.g. the Changxing Formation gas reservoir in Yuanba Gas Field, the Sichuan Basin, and the Longwangmiao gas reservoir in Moxi Block, Anyue Gas Field, the exploration and development of large-scale carbonate gas reservoirs in China steps into a new stage. However, large-scale carbonate gas reservoirs are geologically complex due to their special hydrocarbon accumulation process, so their development is faced with great uncertainty and the development results are different in different gas fields. To develop carbonate gas reservoirs scientifically, different types of car- bonate gas reservoirs whose development is mature at home and abroad were taken as the study objects in this paper. The differences of development results between typical gas reservoirs and their influential factors were analyzed, and the main factors controlling the development characteristics of carbonate gas reservoirs were pointed out. Then, based on gas reservoir subdivision, the recommended values for development indexes of various gas reservoirs were put forward. It is indicated that the main factors affecting the develop- ment results of carbonate gas reservoirs are drive types, reservoir physical properties, fracture development degree and gas reservoir management measures. Based on the main development control factors, carbonate gas reservoirs are subdivided into four types, i.e., pressure depletion drive, porous water drive, fractured edge drive and fractured bottom water drive. Based on statistical analysis, the laws of the following development indexes are proposed, e.g. gas production rate of recoverable reserves, production plateau, decline rate and recovery factor. It provides the reference of the scientific development of similar gas reservoirs at home.

关 键 词：国内外 大型气田 碳酸盐岩 矿场统计 开发规律 驱动类型 开发指标 采收率 

分 类 号：TE37[石油与天然气工程—油气田开发工程]