摘要
苏里格气田苏14井区上古生界气藏是苏里格气田重要的产气区,围绕主力产层下二叠统石盒子组盒_(8)段和山西组山_(1)段开发建产的井网密度大,开发难度逐渐增加,储层规模相对较小、气源条件更好的山_(2)段逐渐被作为该区块的接力产层,苏14区山_(2)段储层研究程度较低、储层发育规模和资源量规模不清。本次研究首先对苏14区山_(2)段气藏的沉积演化史、气源特征、储层规模、储层物性特征和成藏进行了分析,认为山_(2)段气藏具有气源条件好、储层规模小、先致密后成藏和保存特征好等特征;之后,通过研究区675口井山_(2)段有效储层进行评价,获得山_(2)段含气面积等参数,通过容积法计算了苏14区山_(2)段的储量为87.7×10^(8)m^(3),有效储层发育区的储量丰度为0.71×10^(8)m^(3)/km^(2),储量规模和丰度均相对较低;最后,对山_(2)段生产动态数据进行分析,明确了山_(2)段气藏具有单井日产气呈低产、稳产,投产初期不产水、后期产水的特征。通过综合分析,认为山_(2)段气藏规模主控因素为储层发育的规模,在储层规模较小的井区,可以作为兼顾开发层位;在储层较为发育区山_(2)段也具有作为独立产层进行开发的潜力。
The Upper Paleozoic gas reservoir in Well Su 14 of Sulige Gas field is an important gas producing area.Gas development becomes gradually difficult because of the high well spacing density surrounding the main producing layers of Lower Permian Shihezi Formation and Shan 1 member of Shanxi Formation in the area.At present,the Shan 2 member with a relatively small reservoir size and better gas source conditions is considered to take as the relay producing layer of the block.However,the research related to the reservoir of Shan 2 in Su 14 area is few,and the scale of reservoir development and resource quantity remains unclear,which directly affects the gas source development in this area.Analysis of the sedimentary evolution history,gas source characteristics,reservoir size,reservoir physical properties and reservoir formation of the Shan-2 member gas reservoir in Su 14 area indicates that it has a good gas source condition with small reservoir size,and the gas reservoir has the characteristics of initial densification followed by accumulation with good preservation condition.Based on the evaluation of the effective reservoirs of 675 wells of Shan 2 in the study area,the gas area and other parameters of Shan 2 member were obtained.Calculated by volume method,the reserves of Shan 2 member in Su 14 area are 87.7×10^(8) m^(3),and the reserves abundance of effective reservoir development area is 0.71×10^(8) m^(3)/km^(2),both of which are relatively low.The dynamic production data of Shan-2 member shows that the daily gas production of a single well is low but stable,and there is no water production at the initial stage and water production at the later stage.Through comprehensive analysis,it is proposed that the main controlling factor of gas reservoir scale in Shan-2 member is the scale of reservoir development,and it can be used as a suitable development horizon in the well area with a small reservoir scale.Shan-2 member in relatively developed reservoir area also has the potential to be developed as an independent p
作者
魏千盛
阳生国
石堃
王国华
陈安清
欧居刚
陈罗元
刁永波
周怀来
Wei Qiansheng;Yang Shengguo;Shi Kun;Wang Guohual;Chen Anqing;Ou Jugang;Chen Luoyuan;Diao Yongbo;Zhou Huailai(NO.3 Gas Production Plant of Changqing Oilfield Com pany,CNPC,Xi'an,Shanxi 710018,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of T echnology,Chengdu,Sichuan 610059,China;Southwest Geo ph ysical Research Institute BGP,CNPC,Chengdu,Sichuan 610000,China)
出处
《矿物岩石》
CAS
CSCD
北大核心
2022年第3期78-88,共11页
Mineralogy and Petrology
基金
国家自然科学基金面上项目(批准号:41872109)
苏14区块次产层储层综合评价及开发潜力评价(项目编号:2020-0047168-DQYT-0008086)。
关键词
苏里格气田苏14区
山2段
致密气藏
资源量
Su-14 Well Block of Sulige Gas Field
the second Member of Shanxi Formation
tight gas reservoir
resources
