Gas-bearing property prediction of Leikoupo Formation in the northwest Sichuan Basin based on the theory of two-phase media
-
摘要: 四川盆地西北部雷口坡组勘探潜力大,随着勘探的深入,多口钻井在雷口坡组雷三3亚段油气显示活跃,测井解释储层较为发育,含气性好。针对雷口坡组含气有利区分布不清的问题,首先结合川西北地区地震地质情况和钻测井资料,通过经验模态分解技术高分辨率处理,在保持低频信号的同时抬升高频能量,有效拓宽了地震数据的频宽,为双相介质油气检测技术提供了资料基础。基于单井目的层位置处的频谱分析与标定,发现目的层含气时频谱表现为低频能量相对增强,高频能量相对减弱的特征,优选敏感频率范围,利用基于双相介质理论的油气检测技术对研究区开展储层含气性检测,油气检测结果与实钻井和地质规律匹配较好,证实了该技术在研究区应用的可靠性,为川西北部雷口坡组扩大勘探领域提供了指导方向。Abstract: The Leikoupo Formation in northwest Sichuan Basin has great potential in exploration,quite a few wells demonstrate active oil and gas showings during drilling,and good gas-bearing property and reservoir development are interpreted from well logging.Aiming at tackling the unclear distribution of favorable gas-bearing zones of Leikoupo Formation and based on the combination of seismic geological conditions and well logging data,the authors conducted Empirical Mode Decomposition processing to compensate high-frequency energy while preserving the low-frequency energy,which laid the data basis for subsequent bi-media hydrocarbon detection technique.Then amplitude spectrums at different well locations were compared and analyzed,the low-frequency energy enhancement and high-frequency energy attenuation were found where reservoir contained gas.With the optimized frequency range,hydrocarbon detection based on two-phase media theory was implemented on the seismic data of the study area.The results of hydrocarbon detection are well consistent with the data from drilling wells and the geological law,which confirms the validity of proposed techniques and provides the directions for expanding oil and gas exploration range and area of Leikoupo Formation in northwest Sichuan Basin.
-
-
[1] 张会星, 何兵寿, 姜效典, 等. 利用地震波在双相介质中的衰减特性检测油气[J]. 石油地球物理勘探, 2010, 45(3):343-349.
[2] Zhang H X, He B S, Jiang X D, et al. Utilizing attenuation characteristic of seismic wave in dual-phase medium to detect oil and gas[J]. Oil Geophysical Prospecting, 2010, 45(3):343-349.
[3] Biot M A. Theory of propagation of elastic waves in a fluid-saturated porous solid.I.Low frequency range[J]. The Journal of the Acoustical Society of America, 1956, 28(2):168.
[4] Biot M A. Theory of propagation of elastic waves in a fluid-saturated porous solid.II.Higher frequency range[J]. The Journal of the Acoustical Society of America, 1956, 28(2):179.
[5] Biot M A. Generalized theory of acoustic propagation in porous dissipative media[J]. The Journal of the Acoustical Society of America, 1962, 34(9A):1254-1264.
[6] 周民都, 李清河, 张元生. 双相介质中的地震波运动学特征[J]. 高原地震, 1999, 11(4):1-8.
[7] Zhou M D, Li Q H, Zhang Y S. The kinematic characteristics of seismic waves in two-phase media[J]. Earthquake Research in Plateau, 1999, 11(4):1-8.
[8] 李宏伟, 王九拴, 邵林海, 等. 油气检测技术在三湖浅层生物气勘探中的应用[J]. 石油地球物理勘探, 2013, 48(5):770-775.
[9] Li H W, Wang J S, Shao L H, et al. Hydrocarbon detection in biogas exploration in Sanhu shallow[J]. Oil Geophysical Prospecting, 2013, 48(5):770-775.
[10] 李永义. 双相介质油气检测技术在龙西—杏西地区含油性预测中的应用[J]. 石油地球物理勘探, 2017, 52(s1):72-76.
[11] Li Y Y. Hydrocarbon detection based on two-phase medium for oil-bearing prediction in the Longxi-Xingxi area[J]. Oil Geophysical Prospecting, 2017, 52(s1):72-76.
[12] 杨占龙, 沙雪梅, 李在光. 含油气检测技术及其在岩性圈闭油气藏勘探中的应用[J]. 天然气地球科学, 2010, 21(5):822-827,874.
[13] Yang Z L, Sha X M, Li Z G. Hydrocarbon detection and application in lithologic reservoir exploration[J]. Natural Gas Geoscience, 2010, 21(5):822-827,874.
[14] 张艳芳, 王权锋. 基于双相介质的地震油气检测技术[J]. 天然气地球科学, 2013, 24(4):803-807.
[15] Zhang Y F, Wang Q F. Oil-gas detecting techniques with seismic in two phase medium[J]. Natural Gas Geoscience, 2013, 24(4):803-807.
[16] 陈希光, 陈昌, 王波, 等. 油气双相介质理论在辽西凹陷南部岩性圈闭中的应用[J]. 地质与资源, 2019, 28(1):35-42.
[17] Chen X G, Chen C, Wang B, et al. Application of hydrocarbon detection method based on two-phase media theory in the lithologic traps in southern liaoxi sag[J]. Geology and Resources, 2019, 28(1):35-42.
[18] 郭华军, 黄革萍, 徐洋. 油气检测技术在莫索湾地区的应用[J]. 物探与化探, 2013, 37(2):264-268.
[19] Guo H J, Huang G P, Xu Y. The application of hydrocarbon detection technology to Mosuo-wan field[J]. Geophysical and Geochemical Exploration, 2013, 37(2):264-268.
[20] 李素华, 卢齐军, 许国明, 等. 川西XC地区雷口坡组顶不整合面储层预测方法[J]. 石油地球物理勘探, 2013, 48(5):793-798.
[21] Li S H, Lu Q J, Xu G M, et al. Reservoir prediction in the top Leikoupo unconformity surface in the area XC, Sichuan[J]. Oil Geophysical Prospecting, 2013, 48(5):793-798.
[22] 陈刚, 张玺华, 陈勇, 等. 风化壳古岩溶储层地震预测方法——以川东北元坝地区雷口坡组四段为例[J]. 煤田地质与勘探, 2015, 43(4):85-89.
[23] Chen G, Zhang X H, Chen Y, et al. Seismic prediction of weathering crust palaeokarst reservoir:a study on the karst reservoir of the 4th Leikoupo Formation of Yuanba area in Northeast Sichuan[J]. Coal Geology and Exploration, 2015, 43(4):85-89.
[24] 周进高, 辛勇光, 谷明峰, 等. 四川盆地中三叠统雷口坡组天然气勘探方向[J]. 天然气工业, 2010, 30(12):16-19.
[25] Zhou J G, Xin Y G, Gu M F, et al. Direction of gas exploration in the Middle Triassic Leikoupo Formation of the Sichuan Basin[J]. Natural Gas Industry, 2010, 30(12):16-19.
[26] 辛勇光, 周进高, 倪超, 等. 四川盆地中三叠世雷口坡期障壁型碳酸盐岩台地沉积特征及有利储集相带分布[J]. 海相油气地质, 2013, 18(2):5-11.
[27] Xin Y G, Zhou J G, Ni C, et al. Sedimentary facies features and favorable lithofacies distribution of Middle Triassic Leikoupo Barriered Carbonate Platform in Sichuan Basin[J]. Marine Origin Petroleum Geology, 2013, 18(2):5-11.
[28] 田瀚, 唐松, 张建勇, 等. 川西地区中三叠统雷口坡组储层特征及其形成条件[J]. 天然气地球科学, 2018, 29(11):1585-1594.
[29] Tian H, Tang S, Zhang J Y, et al. Characteristics and formation conditions of carbonate reservoir in Leikoupo Formation of western Sichuan Basin[J]. Natural Gas Geoscience, 2018, 29(11):1585-1594.
[30] 孙春燕, 胡明毅, 胡忠贵, 等. 四川盆地中三叠统雷口坡组沉积特征及有利储集相带[J]. 石油与天然气地质, 2018, 39(3):498-512.
[31] Sun C Y, Hu M Y, Hu Z G, et al. Sedimentary characteristics and favorable reservoir facies distribution of the Middle Triassic Leikoupo Formation,Sichuan Basin[J]. Oil & Gas Geology, 2018, 39(3):498-512.
[32] 杨光, 石学文, 黄东, 等, 四川盆地龙岗气田雷四3亚段风化壳气藏特征及其主控因素[J]. 天然气工业, 2014, 34(9):17-24.
[33] Yang G, Shi X W, Huang D, et al. Characteristic sand major controls of weathering crust gas reservoirs in T2l34 in the Longgang Gas Field,Sichuan Basin[J]. Natural Gas Industry, 2014, 34(9):17-24.
[34] 周世超, 王兴志, 曾德铭, 等. 川中龙岗地区中三叠统雷四3亚段气藏地球化学特征与成藏分析[J]. 新疆石油地质, 2015, 36(4):415-422.
[35] Zhou S C, Wang X Z, Zeng D M, et al. Geochemistry and accumulation analysis of gas reservoir of Leikoupo 43sub-member of Middle Triassicin Longgang area,Central Sichuan Basin[J]. Xinjiang Petroleum Geology, 2015, 36(4):415-422.
[36] 王廷栋, 郑永坚, 李绍基, 等. 从油气地化特征探讨川西北中坝雷三气藏的气源[J]. 天然气工业, 1989, 9(5):20-26.
[37] Wang T D, Zhen Y J, Li S J, et al. From geo-chemical characteristics of oil and gas to discuss the gas source of Lei-3 reservoir,Zhongba Gasfield,in northwest Sichuan[J]. Natural Gas Industry, 1989, 9(5):20-26.
[38] 赵延江, 段云卿, 杨文军, 等. 大民屯凹陷高分辨地震资料处理技术研究[J]. 物探与化探, 2007, 34(4):370-373.
[39] Zhao Y J, Duan Y Q, Yang W J, et al. A study of the high-resolution seismic data processing technique for Damingtun Sag[J]. Geophysical and Geochemical Exploration, 2007, 34(4):370-373.
[40] Wang T, Zhang M C, Yu Q H, et al. Comparing the applications of EMD and EEMD on time-frequency analysis of seismic signal[J]. Journal of Applied Geophysics, 2012, 83:29-34.
[41] Huang N E, Shen Z, Long S R, et al. The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[J]. Proceedings A, 1998, 454(1971):903-995.
[42] 张波, 郭平, 高树生, 等. 高分辨率处理技术在辽河雷家地区碳酸盐岩储层中的应用[J]. 石油地球物理勘探, 2018, 53(s1):43-50.
[43] Zhang B, Guo P, Gao S S, et al. High-resolution processing techniques applied for carbonate reservoirs in Leijia Area,Liaohe[J]. Oil Geophysical Prospecting, 2018, 53(s1):43-50.
-
计量
- 文章访问数: 360
- PDF下载数: 67
- 施引文献: 0
下载: