Lithologic Reservoirs ›› 2020, Vol. 32 ›› Issue (2): 90-99.doi: 10.12108/yxyqc.20200209

Previous Articles     Next Articles

Classification and effectiveness evaluation of karst reservoirs of Maokou Formation in eastern and southern Sichuan Basin

WU Feng1, XI Yanping1, ZHANG Ya2, CHEN Shuangling2, YAO Cong1, YANG Yuran2   

  1. 1. School of Geosciences and Technology, Southwest Petroleum University, Chengdu 610500, China;
    2. Research Institute of Exploration and Development, PetroChina Southwest Oil&Gas Field Company, Chengdu 610051, China
  • Received:2019-09-01 Revised:2019-10-13 Online:2020-03-21 Published:2020-01-19

PDF (PC)

342

Abstract: Influenced by exposure and weathering leaching,Maokou Formation of the middle Permian in eastern and southern Sichuan Basin has developed unique eogenetic weathering crust karst reservoirs,which has great exploration and development potential. Due to the complex characteristics of the pore structure,vertical and horizontal distribution and well logging response,it is difficult to carry out logging effectiveness evaluation. On the basis of reservoir classification,combined with karst development model,the logging effectiveness evaluation methods for three sets of typical reservoirs of Maokou Formation were studied. The results show that:(1)The effectiveness of the reservoirs developed in the top of Maokou Formation is closely related to the filling degree of weathering residual deposits such as auxetic mudstone. The effectiveness of the reservoirs with higher uranium content in Mao 1 member to Mao 3 member is closely related to the activity of the formation water,and the effectiveness of bedded reservoirs developed in Mao 1 member to Mao 2 member is closely related to the control of the argillaceous limestone on the water table.(2)The radioactive intensity of rocks directly or indirectly reflects the development and effectiveness of the karst reservoirs in Maokou Formation,so natural gamma ray logging and natural gamma ray spectral logging play important roles in the evaluation of the effectiveness of karst reservoirs.(3)Influenced by lithology,fault,karst erosion degree and other factors,the distributions of horizontal undercurrent zone and deep slow current zone vary in different structures,and the main developed depth of reservoirs is also different. The study results can be used for reference for the validity identification of karst reservoirs.

Key words: Maokou Formation, karst reservoir, effectiveness evaluation, well logging, Sichuan Basin

CLC Number: 

  • TE122.2+5
[1] 童崇光. 四川盆地断褶构造形成机制. 天然气工业, 1992, 12(5):1-6. TONG C G. Mechanism of forming fault-folded structure in Sichuan Basin. Natural Gas Industry, 1992, 12(5):1-6.
[2] 曹刚, 李其荣, 安辉. 川南地区下二叠统茅口组"岩溶型气藏" 地震、地质特征探讨. 天然气地球科学, 1999, 10(3):76-82. CAO G, LI Q R, AN H. Discussion on seismic and geological characteristics of "karst gas reservoir" in Maokou Formation of Lower Permian in south Sichuan Basin. Natural Gas Industry, 1999, 10(3):76-82.
[3] 肖笛, 谭秀成, 山述娇, 等. 四川盆地南部中二叠统茅口组古岩溶地貌恢复及其石油地质意义. 地质学报, 2014, 88(10):1992-2002. XIAO D, TAN X C, SHAN S J, et al. The restoration of Palaeokarst geomorphology of Middle Permian Maokou Formation and its petroleum geological significance in southern Sichuan Basin. Acta Geologica Sinica, 2014, 88(10):1992-2002.
[4] 施泽进, 夏文谦, 王勇, 等.四川盆地东南部茅口组古岩溶特征及识别.岩石学报, 2014, 30(3):622-630. SHI Z J, XIA W Q, WANG Y, et al. Characteristics and identification of paleokarst in the Maokou Formation in the southeastern Sichuan Basin. Acta Petrologica Sinica, 2014, 30(3):622-630.
[5] 沈平, 张健, 宋家荣, 等.四川盆地中二叠统天然气勘探新突破的意义及有利勘探方向. 天然气工业, 2015, 35(7):1-9. SHEN P, ZHANG J, SONG J R, et al. Significance of new breakthrough in and favorable targets of gas exploration in the Middle Permian system, Sichuan Basin. Natural Gas Industry, 2015, 35(7):1-9.
[6] 张玺华, 陈聪, 张亚, 等. 川西北地区茅口组海槽相地质特征及其油气地质意义. 天然气勘探与开发, 2018, 41(3):42-50. ZHANG X H, CHEN C, ZHANG Y, et al. Geological characteristics of trough facies,Maokou Formation,northwestern Sichuan Basin:Implications for geology. Natural Gas Exploration and Development, 2018, 41(3):42-50.
[7] 胡东风. 四川盆地元坝地区茅口组台缘浅滩天然气勘探的突破与启示. 天然气工业, 2019, 39(3):1-10. HU D F. Breakthrough in natural gas exploration in the platform margin shoal at the Maokou Fm in the Yuanba area, Sichuan Basin, and its implications. Natural Gas Industry, 2019, 39(3):1-10.
[8] 肖笛, 谭秀成, 山述娇, 等. 四川盆地南部中二叠统茅口组二段沉积微相研究. 沉积学报, 2015, 33(6):1182-1191. XIAO D, TAN X C, SHAN S J, et al. Sedimentary microfacies of the second member in Maokou Formation, Middle Permian, south Sichuan Basin. Acta Sedimentologica Sinica, 2015, 33(6):1182-1191.
[9] 刘宏, 马腾, 谭秀成, 等. 表生岩溶系统中浅埋藏构造-热液白云岩成因:以四川盆地中部中二叠统茅口组为例. 石油勘探与开发, 2016, 43(6):916-927. LIU H, MA T, TAN X C, et al. Origin of structurally controlled hydrothermal dolomite in epigenetic karst system during shallow burial:an example from Middle Permian Maokou Formation, central Sichuan Basin, SW China. Petroleum Exploration and Development, 2016, 43(6):916-927.
[10] 戴晓峰, 张明, 江青春, 等. 四川盆地中部下二叠统茅口组岩溶储集层地震预测. 石油勘探与开发, 2017, 44(1):79-88. DAI X F, ZHANG M, JIANG Q C, et al. Karst reservoirs seismic prediction of Lower Permian Maokou Formation in central Sichuan Basin, SW China. Petroleum Exploration and Development, 2017, 44(1):79-88.
[11] 汪泽成, 江青春, 黄士鹏, 等. 四川盆地中二叠统茅口组天然气大面积成藏的地质条件. 天然气工业, 2018, 38(1):30-38. WANG Z C, JIANG Q C, HUANG S P, et al. Geological conditions for massive accumulation of natural gas in the Mid-Permian Maokou Formation of the Sichuan Basin. Natural Gas Industry, 2018, 38(1):30-38.
[12] 黄士鹏, 江青春, 冯庆付, 等.川南地区中二叠统茅口组岩溶储集层类型与分布规律.石油勘探与开发, 2019, 46(2):1-9. HUANG S P, JIANG Q C, FENG Q F, et al. Type and distribution of Mid-Permian Maokou Formation karst reservoirs in southern Sichuan Basin, SW China. Petroleum Exploration and Development, 2019, 46(2):1-9.
[13] 耿斌, 胡心红. 孔隙结构研究在低渗透储层有效性评价中的应用. 断块油气田, 2011, 18(2):187-190. GENG B, HU X H. Application of pore structure study in effectiveness evaluation of low permeability reservoir. Fault-Block Oil and Gas Field, 2011, 18(2):187-190.
[14] 吴丰, 黄丹, 袁龙, 等.青西油田窿六区块储层裂缝有效性研究. 特种油气藏, 2012, 19(5):42-45. WU F, HUANG D, YUAN L, et al. Study on reservoir fracture effectiveness of block Long 6 of Qingxi Oilfield. Special Oil and Gas Reservoirs, 2012, 19(5):42-45.
[15] 张兆辉, 高楚桥, 高永德. 三元耦合方法评价孔洞型储层有效性. 测井技术, 2013, 37(6):643-647. ZHANG Z H, GAO C Q, GAO Y D. Effectiveness of evaluating vuggy reservoir with ternary factors coupling approach. Well Logging Technology, 2013, 37(6):643-647.
[16] 陈宗清. 四川盆地中二叠统茅口组天然气勘探. 中国石油勘探, 2007, 12(5):1-11. CHEN Z Q. Exploration for natural gas in Middle Permian Maokou Formation of Sichuan Basin. China Petroleum Exploration, 2007, 12(5):1-11.
[17] 李凤杰, 郑荣才, 周小进, 等.中国南方晚古生代构造演化与盆地原型. 沉积与特提斯地质, 2009, 29(2):93-99. LI F J, ZHENG R C, ZHOU X J, et al. Late Palaeozoic tectonic evolution and basin prototype in southern China. Sedimentary Geology and Tethyan Geology, 2009, 29(2):93-99.
[18] XIAO D, TAN X C, XI A H, et al. An inland facies-controlled eogenetic karst of the carbonate reservoir in the Middle Permian Maokou Formation, southern Sichuan Basin, SW China. Marine and Petroleum Geology, 2016, 72:218-233.
[19] 江青春, 胡素云, 姜华, 等.四川盆地中二叠统茅口组地层缺失量计算及成因探讨. 天然气工业, 2018, 38(1):21-29. JIANG Q C, HU S Y, JIANG H, et al. Calculation and inducement of lacuna in the Mid-Permian Maokou Fm of the Sichuan Basin. Natural Gas Industry, 2018, 38(1):21-29.
[20] 王珏博, 谷一凡, 陶艳忠, 等. 川中地区茅口组两期流体叠合控制下的白云石化模式. 沉积学报, 2016, 34(2):236-249. WANG J B, GU Y F, TAO Y Z, et al. The model of dolomitization jointly controlled by two-episode fluids in Maokou Formation in central Sichuan Basin. Acta Sedimentologica Sinica, 2016, 34(2):236-249.
[21] 耿晓洁, 林畅松, 吴斌. 古地貌对塔中地区鹰山组岩溶结构及分布的控制作用. 岩性油气藏, 2018, 30(4):46-55. GENG X J, LIN C S, WU B. Controlling of paleogeomorphology to characteristics and distribution of karst structures of Yingshan Formation in Tazhong area. Lithologic Reservoirs, 2018, 30(4):46-55.
[22] 田亮, 李佳玲, 焦保雷. 塔河油田12区奥陶系油藏溶洞充填机理及挖潜方向. 岩性油气藏, 2018, 30(3):52-60. TIAN L, LI J L, JIAO B L. Filling mechanism and potential tapping direction of Ordovician karst reservoirs in block-12 of Tahe Oilfield. Lithologic Reservoirs, 2018, 30(3):52-60.
[23] 司马立强, 陈志强, 王亮, 等.基于滩控岩溶型白云岩储层分类的渗透率建模方法研究:以川中磨溪高石梯地区龙王庙组为例. 岩性油气藏, 2017, 29(3):92-102. SIMA L Q, CHEN Z Q, WANG L, et al. Permeability modeling based on the classification of beach-controlled karst dolomite reservoirs:a case from Longwangmiao Formation in Moxi-Gaoshiti area,central Sichuan Basin. Lithologic Reservoirs, 2017, 29(3):92-102.
[24] 代冬冬, 房启飞, 万效国, 等.哈拉哈塘地区奥陶系岩溶古河道识别及其成藏意义.岩性油气藏, 2017, 29(5):89-96. DAI D D, FANG Q F, WAN X G, et al. Identification of Ordovician karstic paleochannels and its accumulation significance in Halahatang area. Lithologic Reservoirs, 2017, 29(5):89-96.
[25] 肖笛, 谭秀成, 郗爱华, 等.四川盆地南部中二叠统茅口组碳酸盐岩岩溶特征:古大陆环境下层控型早成岩期岩溶实例. 古地理学报, 2015, 17(4):457-476. XIAO D, TAN X C, XI A H, et al. Palaeokarst characteristics of carbonate rocks of the Middle Permian Maokou Formation in southern Sichuan Basin:Example of strata-bound eogenetic karst in palaeo-continental settings. Journal of Palaeogeography, 2015, 17(4):457-476.
[26] 王谦.自然伽马能谱测井在塔河奥陶系地层划分中的应用. 石油物探, 2004, 43(5):504-507. WANG Q. Application of GR spectroscopy log in stratigraphic classification of the Ordovician formation in Tahe oilfield. Geophysical Prospecting for Petroleum, 2004, 43(5):504-507.
[27] 彭曙光, 潘和平, 王霁霞, 等. 自然伽马能谱井在储层评价中的应用. 工程地球物理学报, 2009, 6(4):481-484. PENG S G, PAN H P, WANG J X, et, al. Application of natural gamma ray spectrometry logs in reservoir evaluation. Chinese Journal of Engineering Geophysics, 2009, 6(4):481-484.
[28] 李红敬, 解习农, 黄俊华, 等. 川西北二叠系茅口组海相优质烃源岩发育控制因素. 地球科学——中国地质大学学报, 2012, 37(1):171-180. LI H J, XIE X N, HUANG J H, et al. Sichuan northwest twofold system Maokou group sea phase high-quality hydrocarbon source rock development control factors. Earth Science-Journal of China University of Geosciences, 2012, 37(1):171-180.
[1] ZHAO Jun, LI Yong, WEN Xiaofeng, XU Wenyuan, JIAO Shixiang. Prediction of shale formation pore pressure based on Zebra Optimization Algorithm-optimized support vector regression [J]. Lithologic Reservoirs, 2024, 36(6): 12-22.
[2] YAN Xueying, SANG Qin, JIANG Yuqiang, FANG Rui, ZHOU Yadong, LIU Xue, LI Shun, YUAN Yongliang. Main controlling factors for the high yield of tight oil in the Jurassic Da’anzhai Section in the western area of Gongshanmiao, Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(6): 98-109.
[3] ZHOU Gang, YANG Dailin, SUN Yiting, YAN Wei, ZHANG Ya, WEN Huaguo, HE Yuan, LIU Sibing. Sedimentary filling process and petroleum geological significance of Cambrian Canglangpu Formation in Sichuan Basin and adjacent areas [J]. Lithologic Reservoirs, 2024, 36(5): 25-34.
[4] ZHANG Xiaoli, WANG Xiaojuan, ZHANG Hang, CHEN Qin, GUAN Xu, ZHAO Zhengwang, WANG Changyong, TAN Yaojie. Reservoir characteristics and main controlling factors of Jurassic Shaximiao Formation in Wubaochang area，northeastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 87-98.
[5] YANG Xuefeng, ZHAO Shengxian, LIU Yong, LIU Shaojun, XIA Ziqiang, XU Fei, FAN Cunhui, LI Yutong. Main controlling factors of shale gas enrichment of Ordovician Wufeng Formation-Silurian Longmaxi Formation in Ningxi area，Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 99-110.
[6] CHEN Kang, DAI Juncheng, WEI Wei, LIU Weifang, YAN Yuanyuan, XI Cheng, LYU Yan, YANG Guangguang. Lithofacies classification of tight sandstone based on Bayesian Facies-AVO attributes：A case study of the first member of Jurassic Shaximiao Formation in central Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 111-121.
[7] QIU Yuchao, LI Yading, WEN Long, LUO Bing, YAO Jun, XU Qiang, WEN Huaguo, TAN Xiucheng. Structural characteristics and hydrocarbon accumulation model of Cambrian Xixiangchi Formation in eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 122-132.
[8] BAO Hanyong, ZHAO Shuai, ZHANG Li, LIU Haotian. Exploration achievements and prospects for shale gas of Middle-Upper Permian in Hongxing area，eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(4): 12-24.
[9] WANG Tongchuan, CHEN Haoru, WEN Longbin, QIAN Yugui, LI Yuzhuo, WEN Huaguo. Identification and reservoir significance of Carboniferous karst paleogeomorphology in Wubaiti area，eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(4): 109-121.
[10] ZOU Liansong, XUWenli, LIANG Xiwen, LIU Haotian, ZHOU Kun, HOU Fei, ZHOU Lin, WEN Huaguo. Sedimentary characteristics and sources of shale of Dongyuemiao member of Lower Jurassic Ziliujing Formation in eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(4): 122-135.
[11] LU Keliang, WU Kangjun, LI Zhijun, SUN Yonghe, XU Shaohua, LIANG Feng, LIU Lu, LI Shuang. Characteristics and evolution model of hydrocarbon accumulation of Cambrian Longwangmiao Formation in the north slope of central Sichuan paleo-uplift [J]. Lithologic Reservoirs, 2024, 36(4): 159-168.
[12] XIA Maolong, ZHANG Benjian, ZENG Yiyang, JIA Song, ZHAO Chunni, FENG Mingyou, LI Yong, SHANG Junxin. Main controlling factors and distribution of reservoirs of the second member of Sinian Dengying Formation in Penglai gas field，central Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(3): 50-60.
[13] JI Yubing, GUO Bingru, MEI Jue, YIN Zhijun, ZOU Chen. Fracture modeling of shale reservoirs of Silurian Longmaxi Formation in Luobu syncline in Zhaotong National Shale Gas Demonstration Area， southern margin of Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(3): 137-145.
[14] BAO Hanyong, LIU Haotian, CHEN Miankun, SHENG Xiancai, QIN Jun, CHEN Jie, CHEN Fanzhuo. Accumulation conditions of natural gas of Cambrian Xixiangchi Group in high-steep structural zones，eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(2): 43-51.
[15] BAI Xuefeng, LI Junhui, ZHANG Dazhi, WANG Youzhi, LU Shuangfang, SUI Liwei, WANG Jiping, DONG Zhongliang. Geological characteristics and enrichment conditions of shale oil of Jurassic Lianggaoshan Formation in Yilong-Pingchang area，Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(2): 52-64.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] DUAN Tianxiang,LIU Xiaomei,ZHANG Yajun,XIAO Shuqin. Discussion on geologic modeling with Petrel[J]. Lithologic Reservoirs, 2007, 19(2): 102 -107 .
[2] ZHANG Liqiu. Optimization of upward strata combination of second class oil layer in eastern south Ⅱ area of Daqing Oilfield[J]. Lithologic Reservoirs, 2007, 19(4): 116 -120 .
[3] ZHANG Di，HOU Zhongjian，WANG Yahui，WANG Ying，WANG Chunlian. Sedimentary characteristics of lacustrine carbonate rocks of the first member of Shahejie Formation in Banqiao-Beidagang area[J]. Lithologic Reservoirs, 2008, 20(4): 92 -97 .
[4] FAN Huaicai， LI Xiaoping， DOU Tiancai， WU Xinyuan. Study on stress sensitivity effect on flow dynamic features of gas wells[J]. Lithologic Reservoirs, 2010, 22(4): 130 -134 .
[5] TIAN Shufang，ZHANG Hongwen. Application of life cycle theory to predict increasing trend of proved oil reserves in Liaohe Oilfield[J]. Lithologic Reservoirs, 2010, 22(1): 98 -100 .
[6] YANG Kai，GUO Xiao. Numerical simulation study of three-dimensional two-phase black oil model in fractured low permeability reservoirs[J]. Lithologic Reservoirs, 2009, 21(3): 118 -121 .
[7] ZHAI Zhongxi， QINWeijun， GUO Jinrui. Quantitative relations between oil-gas filling degree and channel seepage flow capacity of the reservoir：Example of Shuanghe Oilfield in Biyang Depression[J]. Lithologic Reservoirs, 2009, 21(4): 92 -95 .
[8] QI Minghui，LU Zhengyuan，YUAN Shuai，LI Xinhua. The analysis on the sources of water body and characteristic of water breakthough at Block 12 in Tahe Oilfield[J]. Lithologic Reservoirs, 2009, 21(4): 115 -119 .
[9] LI Xiangbo,CHEN Qi,lin,LIU Huaqing,WAN Yanrong,MU Jingkui,LIAO Jianbo,WEI Lihua. Three types of sediment gravity flows and their petroliferous features of Yanchang Formation in Ordos Basin[J]. Lithologic Reservoirs, 2010, 22(3): 16 -21 .
[10] LIU Yun，LU Yuan，YI Xiangyi， ZHANG Junliang， ZHANG Jinliang，WANG Zhenxi. Gas hydrate forecasting model and its influencing factors[J]. Lithologic Reservoirs, 2010, 22(3): 124 -127 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn