| Citation: |
WU Peng，ZHOU Guoxiao，LIU Shiwei，et al. Detailed classification of coal structure based on micro resistivity imaging logging[J]. Coal Science and Technology，2024，52（S1）：137−144. DOI: 10.12438/cst.2023-1679
|
The deep coal seam has high free gas content and abundant resources, which is an important potential resource for natural gas storage and production. The gas content of deep coal seams, particularly the free gas content, is significantly influenced by the sealing condition of roof. Based on the micro-resistivity imaging logging technology, the roof lithology identification of certain coalbed methane production area in the eastern margin of Ordos Basin is carried out, the identification chart of coal seam roof lithology and fracture is established, the direction of ground stress is analyzed, and the favorable roof combination type is put forward. The result show that combining conventional logging data and electrical imaging characteristics, 10 types of lithology such as conglomerate, sandstone and mudstone are effectively distinguished based on static electrical image, corresponding to different Gamma and acoustic time logging results. The coal seam roof in the study area is dominated by mudstone, followed by sandstone. The cracks in the roof of the coal seam mainly develop high-conductivity joints and induced joints. The high-conductivity joints are shown as sine curves, including open joints and muddy filling joints. The induced joints are arranged in feathers or geese, which can be used to determine the direction of stress. Combined with the thickness of roof lithology and the development of cracks, three types of coal seam roof combinations with different sealing properties can be divided. Among them, the electrical imaging image of type I roof is generally bright and the cracks are less developed. Type II roof develops more cracks. Type III roof image shows that the cracks are cut and the image is not clear. Based on the above work, the distribution of three types of roof combination conditions in the study area is divided. In the deep area, it is mainly I and II, which has good sealing performance. The above work clarifies the display characteristics of different lithologies in electrical imaging logging, and proposes a deep coal seam roof sealing evaluation method based on micro-resistivity imaging logging. The related work can effectively support the optimization of deep coalbed methane dessert zones and well location deployment.
| [1] |
秦勇,申建,李小刚. 中国煤层气资源控制程度及可靠性分析[J]. 天然气工业,2022,42(6):19−32.
QIN Yong,SHEN Jian,LI Xiaogang. Control degree and reliability of CBM resources in China[J]. Natural Gas Industry,2022,42(6):19−32.
|
| [2] |
李勇,徐立富,张守仁,等. 深煤层含气系统差异及开发对策[J]. 煤炭学报,2023,48(2):900−917.
LI Yong,XU Lifu,ZHANG Shouren,et al. Gas bearing system difference in deep coal seams and corre-sponded development strategy[J]. Journal of China Coal Society,2023,48(2):900−917.
|
| [3] |
李勇,汤达祯,许浩,等. 鄂尔多斯盆地东缘煤层气构造控气特征[J]. 煤炭科学技术,2014,42(6):113−117,129.
LI Yong,TANG Dazhen,XU Hao, et al. Characteristics of structural controlled coalbed methane in East margin of Ordos Basin[J]. Coal Science and Technology,2014,42(6):113−117,129.
|
| [4] |
闫霞,徐凤银,张雷,等. 微构造对煤层气的控藏机理与控产模式[J]. 煤炭学报,2022,47(2):893−905.
YAN Xia,XU Fengyin,ZHANG Lei,et al. Reservoir-controlling mechanism and production-controlling patterns of microstructure to coalbed methane[J]. Journal of China Coal Society,2022,47(2):893−905.
|
| [5] |
李勇,吴鹏,高计县,等. 煤成气多层系富集机制与全含气系统模式—以鄂尔多斯盆地东缘临兴区块为例[J]. 天然气工业,2022,42(6):52−64.
LI Yong,WU Peng,GAO Jixian,et al. Multilayer coal-derived gas enrichment mechanism and whole gas bearing system model:a case study on the Linxing Block along the eastern margin of the Ordos Basin[J]. Natural Gas Industry,2022,42(6):52−64.
|
| [6] |
刘之的,杨秀春,张继坤,等. 利用测井资料定量评价煤层顶底板的封闭性[J]. 中南大学学报(自然科学版),2015,46(3):1100−1109.
LIU Zhidi,YANG Xiuchun,ZHANG Jikun,et al. Quantitatively evaluating sealing ability of coal roof and floor using logging data[J]. Journal of Central South University (Science and Technology),2015,46(3):1100−1109.
|
| [7] |
赖锦,庞小娇,赵鑫,等. 测井地质学研究典型误区与科学思维[J]. 天然气工业,2022,42(7):31−44.
LAI Jin,PANG Xiaojiao,ZHAO Xin,et al. Typical misunderstandings and scientific ideas in well logging geology research[J]. Natural Gas Industry,2022,42(7):31−44.
|
| [8] |
李慧婷,常锁亮,张生,等. 基于各向异性高分辨地震处理的煤层顶板含水性风险评价[J]. 煤炭科学技术,1−8 [2024-06-19]. DOI: 10.12438/cst.2023-0376.
LI Huiting,CHANG Suoliang,ZHANG Sheng,et al. Evaluation of Coal Seam Roof Water-Bearing Risk Area Via Anisotropic High-Resolution Seismic Processing[J]. Coal Science and Technology,1−8 [2024-06-19]. DOI: 10.12438/cst.2023-0376.
|
| [9] |
杨玉卿,崔维平,王猛,等. 成像测井沉积学研究进展与发展趋势[J]. 中国海上油气,2017,29(3):7−18.
YANG Yuqing,CUI Weiping,WANG Meng,et al. A review on the research progress and development trend of imaging logging sedimentology[J]. China Offshore Oil and Gas,2017,29(3):7−18.
|
| [10] |
陈康,闫建平,赵振宇,等. 应用电成像测井识别鄂尔多斯盆地薄互层砂泥岩[J]. 测井技术,2020,44(6):576−583.
CHEN Kang,YAN Jianping,ZHAO Zhenyu,et al. Identification of thin interbedded sand and shale with electrical imaging logging in Ordos Basin[J]. Well Logging Technology,2020,44(6):576−583.
|
| [11] |
ZOBACK M D,BARTON C A,BRUDY M. Determination of stress orientation and magnitude in deep wells[J]. International Journal of Rock Mechanics and Mining Sciences,2003,40(7/8):1049−1076.
|
| [12] |
印兴耀,马妮,马正乾,等. 地应力预测技术的研究现状与进展[J]. 石油物探,2018,57(4):488−504.
YIN Xingyao,MA Ni,MA Zhengqian,et al. Review of in-situ stress prediction technology[J]. Geophysical Prospecting for Petroleum,2018,57(4):488−504.
|
| [13] |
赵军,张莉,王贵文,等. 一种基于测井信息的山前挤压构造区地应力分析新方法[J]. 地质科学,2005,40(2):284−290,302.
ZHAO Jun,ZHANG Li,WANG Guiwen,et al. A new method for analyzing crustal stress in foreland structural compressive area based on logging data[J]. Chinese Journal of Geology,2005,40(2):284−290,302.
|
| [14] |
LAI Jin,WANG Guiwen,FAN Qixuan,et al. Geophysical well-log evaluation in the era of unconventional hydrocarbon resources:A review on current status and prospects[J]. Surveys in Geophysics,2022,43(3):913−957. doi: 10.1007/s10712-022-09705-4
|
| [15] |
赵继勇,周新桂,雷启鸿,等. 鄂尔多斯盆地马岭油田长7致密储层古今构造应力研究[J]. 地质力学学报,2017,23(6):810−820.
ZHAO Jiyong,ZHOU Xingui,LEI Qihong,et al. Study on paleo-tectonic and present technology stress in CHANG 7 tight reservoir of Maling oilfield,Ordos Basin[J]. Journal of Geomechanics,2017,23(6):810−820.
|
| [16] |
IQBAL O,AHMAD M,KADIR A A. Effective evaluation of shale gas reservoirs by means of an integrated approach to petrophysics and geomechanics for the optimization of hydraulic fracturing:a case study of the Permian Roseneath and Murteree Shale Gas reservoirs,Cooper Basin,Australia[J]. Journal of Natural Gas Science and Engineering,2018,58:34−58. doi: 10.1016/j.jngse.2018.07.017
|
| [17] |
徐立富,邓纪梅,杜佳,等. 鄂尔多斯盆地东缘临兴地区海陆过渡相页岩岩相类型和储层差异[J]. 煤炭学报,2021,46(S2):862−876.
XU Lifu,DENG Jimei,DU Jia,et al. Lithofacies types and reservoir differences of marine continental transitional shale in Linxing area,eastern margin of Ordos Basin[J]. Journal of China Coal Society,2021,46(S2):862−876.
|
| [18] |
薛纯琦,吴建光,钟建华,等. 海陆交互相沉积泥页岩发育特征研究以鄂尔多斯盆地临兴地区太原组为例[J]. 中国矿业大学学报,2019,48(4):870−881.
XUE Chunqi,WU Jianguang,ZHONG Jianhua,et al. Characteristics of the marine-terrigenous interdepositional shale:A case study of Taiyuan formation in Linxing area of Ordos Bain[J]. Journal of China University of Mining and Technology,2019,48(4):870−881.
|
| [19] |
师晶,黄文辉,吕晨航,等. 鄂尔多斯盆地临兴地区上古生界泥岩地球化学特征及地质意义[J]. 石油学报,2018,39(8):876−889.
SHI Jing,HUANG Wenhui,LV Chenhuang,et al. Geochemical characteristics and geological significance of the Upper Paleozoic mudstones from Linxing area in Ordos Basin[J]. Acta Petrolei Sinica,2018,39(8):876−889.
|
| [20] |
高向东,王延斌,倪小明,等. 临兴地区深部煤岩力学性质及其对煤储层压裂的影响[J]. 煤炭学报,2020,45(S2):912−921.
GAO Xiangdong,WANG Yanbin,NI Xiaoming,et al. Mechanical properties of deep coal and rock in Linxing area and its influences on fracturing of deep coal reservoir[J]. Journal of China Coal Society,2020,45(S2):912−921.
|
| [21] |
李勇,徐立富,刘宇,等. 深部煤层气水赋存机制、环境及动态演化[J]. 煤田地质与勘探,2024,52(2):40−51.
LI Yong,XU Lifu,LIU Yu,et al. Occurrence mechanism,environment and dynamic evolution of gas and water in deep coal seam[J]. Coal Geology & Exploration,2024,52(2):1−13.
|
| [22] |
李贵山,于振锋,杨晋东,等. 沁水盆地郑庄区块煤层气水平井钻井体系优化[J]. 煤炭科学技术,2023,51(4):118−126.
LI Guishan,YU Zhenfeng,YANG Jindong,et al. Optimization of drilling system for CBM horizontal wells in Zhengzhuang Block of Qinshui Basin[J]. Coal Science and Technology,2023,51(4):118−126.
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: