Characteristics of Longwangmiao reservoirs in Penglai gas area and comparison with those in Moxi-Gaoshiti area, central Sichuan Basin
-
摘要:
川中蓬莱气区下寒武统龙王庙组钻遇良好碳酸盐岩储层,天然气显示好,成为继川中地区安岳大气田后龙王庙组重点勘探区之一,但储层发育规律不明制约了勘探部署。基于最新的钻井及分析测试等资料,系统分析了蓬莱气区龙王庙组储层特征及主控因素。研究认为,蓬莱气区龙王庙组具有陆源碎屑与碳酸盐混合沉积背景,储层主要分布在龙王庙组中上部;储集岩石类型主要为(残余)颗粒白云岩和结晶白云岩;储集空间类型主要为粒间溶孔、粒内溶孔、晶间溶孔及微裂缝;以低孔低渗储层为主,储层厚度主要介于10~42 m之间。储层发育受控于层序地层、岩性及成岩作用等,进积型准层序组和准层序中上部的(残余)颗粒白云岩和结晶白云岩是储层发育主要部位,大气淡水溶蚀、油气溶蚀作用及破裂作用是核心建设性成岩作用。对比安岳大气田主体区磨溪-高石梯地区,认为储层主控因素相近,主要受颗粒白云岩、溶蚀作用、破裂作用等控制,但蓬莱气区龙王庙组储层具有灰质含量高、陆源碎屑含量多、准同生期暴露弱等特点,寻找准同生期暴露的高能颗粒白云岩和细晶白云岩及表生岩溶改造的白云岩是蓬莱气区重点关注的储层目标。
Abstract:The Longwangmiao Formation in the Penglai gas area has encountered good carbonate reservoirs and good gas shows. It has become one of the key exploration areas of the Longwangmiao Formation after the Anyue gas field in the central Sichuan area. However, the unclear reservoir development law restricts exploration deployment. Based on the latest drilling and testing data, the reservoir characteristics and main controlling factors of Longwangmiao Formation in Penglai gas area are systematically analyzed. The study shows that the Longwangmiao Formation in Penglai gas area has a mixed sedimentary background of terrigenous debris and carbonate, and the reservoirs are mainly distributed in the upper part of the Longwangmiao Formation. The reservoir rock types are mainly (residual) granular dolomite and crystalline dolomite. The reservoir space types are mainly intergranular dissolved pores, intragranular dissolved pores, intercrystalline dissolved pores and microfractures. The reservoir is mainly composed of low porosity and low permeability reservoirs, and the reservoir thickness is mainly between 10-42 m.Reservoir development is controlled by sequence stratigraphy, lithology and diagenesis. The (residual) granular dolomite and crystalline dolomite in the middle and upper parts of the progradational parasequence set and parasequence are the main parts of reservoir development. Atmospheric freshwater dissolution, oil and gas dissolution and fracture are the core constructive diagenesis. Compared with the Moxi-Gaoshiti area in the main area of Anyue gas field, it is considered that the main controlling factors of the reservoir are similar, which are mainly controlled by granular dolomite, dissolution and fracturing. However, the Longwangmiao Formation reservoir in Penglai gas area has the characteristics of high ash content, high terrigenous clastic content and weak penecontemporaneous exposure. Looking for high-energy granular dolomite and fine-grained dolomite exposed in the penecontemporaneous period and dolomite modified by supergene karst are the key reservoir targets in Penglai gas area.
-
[1] 杜金虎,邹才能,徐春春,等.川中古隆起龙王庙组特大型气田战略发现与理论技术创新[J].石油勘探与开发,2014,41(3):268-277.DU Jinhu,ZOU Caineng,XU Chunchun,et al.Theoretical and technical innovations in strategic discovery of a giant gas field in Cambrian Longwangmiao Formation of central Sichuan paleo-uplift, Sichuan Basin[J].Petroleum Exploration and Development,2014,41(3):268-277. [2] 张满郎,郭振华,张林,等.四川安岳气田龙王庙组颗粒滩岩溶储层发育特征及主控因素[J].地学前缘,2021,28(1):235-248.ZHANG Manlang,CUO Zhenhua,ZHANG Lin,et al.Characteristics of and main factors controlling the karst shoal reservoir of the Lower Cambrian Longwangmiao Formation in the Anyue gas field,central Sichuan Basin,China.Earth Science Frontiers,2021,28(1):235-248. [3] HAO Bin,ZHAO Wenzhi,HU Suyun,et al.Bitumen formation of Cambrian Longwangmiao Formation in the central Sichuan and its implication for hydrocarbon accumulation[J].Petroleum Research,2018,3(1):44-56. [4] ZENG Hongliu,ZHAO Wenzhi,XU Zhaohui,et al.Carbonate seismic sedimentology:a case study of Cambrian Longwangmiao Formation,GaoshitiMoxi area,Sichuan Basin,China[J].Petroleum Exploration and Development Online,2018,45(5):830-839. [5] 邹才能,杜金虎,徐春春,等.四川盆地震旦系-寒武系特大型气田形成分布、资源潜力及勘探发现[J].石油勘探与开发,2014,41(3):278-293.ZOU Caineng,DU Jinhu,XU Chunchun,et al.Formation, distribution, resource potential and discovery of the Sinian-Cambrian giant gas field,Sichuan Basin,SW China[J].Petroleum Exploration and Development,2014,41(3):278-293. [6] 代林呈,王兴志,杜双宇,等.四川盆地中部龙王庙组滩相储层特征及形成机制[J].海相油气地质,2016,21(1):19-28.DAI Lincheng,WANG Xingzhi,DU Shuangyu,et al.Characteristics and genesis of Lower Cambrian Longwangmiao beach-facies reservoirs in central part of Sichuan Basin[J].Marine Origin Petroleum Geology,2016,21(1):19-28. [7] 杜金虎,张宝民,汪泽成,等.四川盆地下寒武统龙王庙组碳酸盐缓坡双颗粒滩沉积模式及储层成因[J].天然气工业,2016,36(6):1-10.DU Jinhu,ZHANG Baomin,WANG Zecheng,et al.Sedimentary model and reservoir genesis of dual grain banks at the Lower Cambrian Longwangmiao Fm carbonate ramp in the Sichuan Basin[J].Natural Gas Industry,2016,36(6):1-10. [8] 杨雨,文龙,宋泽章,等.川中古隆起北部蓬莱气区多层系天然气勘探突破与潜力[J].石油学报,2022,43(10):1351-1368.YANG Yu,WEN Long,SONG Zezhang,et al.Breakthrough and potential of natural gas exploration in multi layer system of Penglai gas area in the northwest of central Sichuan paleo-uplift[J].Acta Petrolei Sinica,2022,43(10):1351-1368. [9] 刘树根,宋金民,赵异华,等.四川盆地龙王庙组优质储层形成与分布的主控因素[J].成都理工大学学报(自然科学版),2014,41(6):657-670. LIU Shugen,SONG Jinmin,ZHAO Yihua,et al.Controlling factors of formation and distribution of Lower Cambrian Longwangmiao Formation high-quality reservoirs in Sichuan Basin,China[J].Journal of Chengdu University of Technology (Science&Technology Edition),2014,41(6):657-670. [10] 魏国齐,谢增业,杨雨,等.四川盆地中部北斜坡震旦系-寒武系大型岩性气藏形成条件[J].石油勘探与开发,2022,49(5):835-846.WEI Guoqi,XIE Zengye,YANG Yu,et al. Formation conditions of Sinian-Cambrian large lithologic gas reservoirs in the north slope area of central Sichuan Basin, SW China[J].Petroleum Exploration and Development,2022,49(5):835-846. [11] JIN Mindong,ZENG Wei,TAN Xiucheng,et al.Characteristics and controlling factors of beach-controlled karst reservoirs in Cambrian Longwangmiao Formation,Moxi-Gaoshiti area,Sichuan Basin,NW China[J].Petroleum Exploration and Development Online,2014,41(6):712-723. [12] 王頔,胡明毅,高达,等.川中磨溪-高石梯地区下寒武统龙王庙组层序格架内滩体的发育演化特征及对储层的控制[J].海相油气地质,2017,22(1):47-54.WANG Di,HU Mingyi,GAO Da,et al.Lower Cambrian Longwangmiao Formation in Moxi-Gaoshiti area, central Sichuan[J].Marine Origin Petroleum Geology,2017,22(1):47-54. [13] 任大伟,江维,高达,等.川中磨溪地区龙王庙组沉积相与高频层序对储层的控制[J].地质与资源,2018,27(1):77-82.REN Dawei,JIANG Wei,GAO Da,et al.The control of sedimentary facies and high frequency sequence on reservoir of Longwangmiao Formation in Moxi area, central Sichuan[J].Geology and Resources,2018,27(1):77-82. [14] 杨威,魏国齐,谢武仁,等.川中地区龙王庙组优质储层发育的主控因素及成因机制[J].石油学报,2020,41(4):421-432.YANG Wei,WEI Guoqi,XIE Wuren,et al.The main controlling factors and genetic mechanism of the development of high-quality reservoirs in Longwangmiao Formation in central Sichuan[J].Acta Petrolei Sinica,2020,41(4):421-432. [15] 李劲松,于豪,李文科,等.高石梯-磨溪地区寒武系储层主控因素的地震地层学解释[J].石油地球物理勘探,2019,54(1):208-216.LI Jinsong,YU Hao,LI Wenke,et al.Seismic stratigraphy interpretation of main control factors of Cambrian reservoirs in Gaoshiti-Mloxi area[J].Oil Geophysical Prospecting,2019,54(1):208-216. [16] 赖锦,王贵文.气藏渗流屏障测井识别方法及应用——以四川盆地中部蓬莱地区须二段为例[J].石油天然气学报,2013,35(1):94-98.LAI Jin,WANG Guiwen.Gas reservoir seepage barrier logging identification method and its application:taking the second member of Xujiahe Formation in Penglai area of central Sichuan Basin as an example[J].Journal of Oil and Gas Technology,2013,35(1):94-98. [17] 王小娟,钟佳倚,李明秋,等.四川盆地蓬莱地区须家河组须二气藏气水关系初探[J].天然气勘探与开发,2015,38(2):1-5.WANG Xiaojuan,ZHONG Jiayi,LI Mingqiu et al.Gas-water relation of Xujiahe 2 gas reservoir in penglai area,Sichuan Basin[J].Natural Gas Exploration and Development,2015,38(2):1-5. [18] 张本健,钟原,周刚,等.四川盆地中部蓬莱地区灯二段沉积微相演化及气藏综合评价[J].海相油气地质,2023,28(1):1-10.ZHANG Benjian,ZHONG Yuan,ZHOU Gang,et al.Sedimentary microfacies evolution and comprehensive evaluation of gas reservoir of the Dengying Member 2 in Penglai area,central Sichuan Basin[J].Marine Origin Petroleum Geology,2023,28(1):1-10. [19] 严威,罗冰,周刚,等.川中古隆起寒武系沧浪铺组下段天然气地质特征及勘探方向[J].石油勘探与开发,2021,48(2):290-302.YAN Wei,LUO Bing,ZHOU Gang,et al.Natural gas geology and exploration direction of the Cambrian Lower Canglangpu Member in central Sichuan paleo-uplift,Sichuan Basin,SW China[J].Petroleum Exploration and Development,2021,48(2):290-302. [20] 汪泽成,赵文智,胡素云,等.克拉通盆地构造分异对大油气田形成的控制作用:以四川盆地震旦系-三叠系为例[J].天然气工业,2017,37(1):9-23.WANG Zecheng,ZHAO Wenzhi,HU Suyun,et al.Control of tectonic differentiation on the formation of large oil and gas fields in cra-ton basins:a case study of Sinian-Triassic of the Sichuan Basin[J].Natural Gas Industry,2017,37(1):9-23. [21] YANG Weiqiang,Li Pingping,CHEN Haoru,et al.Origin and significance of carbonate shoal depositional cycles:a case study of the Cambrian Longwangmiao Formation,Sichuan Basin,SW China[J].Journal of Asian Earth Sciences,2022,226. DOI: 10.1016/j.jseaes.2022.105083. [22] TAN Lei,LIU Hong,TANG Qingsong,et al.Application of seismic geomorphology to carbonate rocks:a case study of the Cambrian Longwangmiao Formation in the Gaoshiti-Moxi area,Sichuan Basin,China[J].Marine and Petroleum Geology,2021. [22] [J].China Manganese Industry,2017,35(3):47-49. [23] 徐妍,杨雪飞,唐浩,等.川中地区龙王庙组花斑白云岩储层特征及成因机理[J].天然气地球科学,2023,34(3):402-417.XU Yan,YANG Xuefei,TANG Hao,et al.Reservoir characteristics and genetic mechanism of mottled dolomite of Longwangmiao Formation in central Sichuan Basin[J].Natural Gas Geoscience,2023,34(3):402-417. [24] SHEN Anjiang,CHEN Yana,PAN Liyin,et al.Facies and porosity origin of reservoirs:case studies from the Cambrian Longwangmiao Formation of Sichuan Basin,China,and their implications on reservoir prediction[J].Journal of Natural Gas Geoscience,2018,3(1):37-49. [25] 刘泠杉,胡明毅,高达,等.四川磨溪-高石梯地区龙王庙组层序划分及储层预测[J].大庆石油地质与开发,2016,35(5):42-47.LIU Lingshan,HU Mingyi,GAO Da,et al.Sequence strata and reservoir prediction for Longwangmiao Formation in Sichuan Moxi-Gaoshiti area[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(5):42-47. [26] 魏国齐,杨威,谢武仁,等.克拉通内裂陷及周缘大型岩性气藏形成机制、潜力与勘探实践:以四川盆地震旦系-寒武系为例[J].石油勘探与开发,2022,49(3):465-477.WEI Guoqi,YANG Wei,XIE Wuren,et al.Formation mechanisms, potentials and exploration practices of large lithologic gas reservoirs in and around an intracratonic rift:taking the Sinian-Cambrian of Sichuan Basin as an example[J].Petroleum Exploration and Development,2022,49(3):465-477. [27] 陈娅娜,张建勇,李文正,等.四川盆地寒武系龙王庙组岩相古地理特征及储层成因与分布[J].海相油气地质,2020,25(2):171-180.CHEN Yana,ZHANG Jianyong,LI Wenzheng,et al.Lithofacies paleogeography,reservoir origin and distribution of the Cambrian Longwangmiao Formation in Sichuan Basin[J].Marine Origin Petroleum Geology,2020,25(2):171-180. [28] 谢武仁.川中地区龙王庙组储层类型划分、主控因素研究及分布预测[D].成都:成都理工大学,2019. XIE Wuren.Study on reservoir type classification&main controlling factors of reservoirs in Longwangmiao Formation and reservoir distribution prediction in central Sichuan Basin[D].Chengdu:Chengdu University Of Technology,2019. [29] 姚根顺,周进高,邹伟宏,等.四川盆地下寒武统龙王庙组颗粒滩特征及分布规律[J].海相油气地质,2013,18(4):1-8.YAO Genshun,ZHOU Jingao,ZOU Weihong,et al.Characteristics and distribution rule of Lower Cambrian Longwangmiao Grain Beach in Sichuan Basin[J].Marine Origin Petroleum Geology,2013,18(4):1-8. [30] 谢武仁,杨威,李熙喆,等.四川盆地川中地区寒武系龙王庙组颗粒滩储层成因及其影响[J].天然气地球科学,2018,29(12):1715-1726.XIE Wuren,YANG Wei,LI Xizhe,et al.The origin and influence of the grain beach reservoirs of Cambrian Longwangmiao Formation in central Sichuan area, Sichuan Basin[J].Natural Gas Geoscience,2018,29(12):1715-1726. [31] 王丹玲,薛纯琦,李生涛,等.四川盆地高磨区块龙王庙储层岩性特征及其孔隙特征分析[J].中国锰业,2017,35(3):47-49.WANG Danling,XUE Chunqi,LI Shengtao,et al.An analysis of reservoir lithology and pore characteristics of Dragon King Temple in Sichuan [32] 邢梦妍,胡明毅,高达,等.高磨地区龙王庙组滩相储层特征及主控因素[J].桂林理工大学学报,2017,37(1):37-46.XING Mengyan,HU Mingyi,GAO Da,et al.Characteristics and main controlling factors of Lower Cambrian Longwangmiao Formation beachfacies reservoirs in Gaoshiti-Moxi area,central Sichuan Basin[J].Journal of Guilin University of Technology,2017,37(1):37-46. [33] 王雅萍,杨雪飞,王兴志,等.川中磨溪地区龙王庙组晶粒白云岩储集性能及成因机制[J].地质科技情报,2019,38(1):197-205.WANG Yaping,YANG Xuefei,WANG Xingzhi,et al.Reservoir property and genesis of powder crystal dolomite in the Longwangmiao Formation,Moxi area in central Sichuan Basin[J].Bulletin of Geological Science and Technology, 2019,38(1):197-205. -
计量
- 文章访问数: 148
- HTML全文浏览量: 33
- PDF下载量: 9
- 被引次数: 0
下载:
苏公网安备32021102000780号