天然气地球科学 ›› 2020, Vol. 31 ›› Issue (11): 16031614.doi: 10.11764/j.issn.1672-1926.2020.05.005
Qing YANG1(),Jian LI1,Wen-guang TIAN1,Bin SUN1,Jie ZHU2,Yu-hang YANG2
摘要:
煤岩孔隙结构特征是判断煤储层含气性的关键因素之一,孔隙结构的精细表征对于厚煤层中优质储层的识别意义重大,但褐煤储层孔隙结构特征难以通过单一手段全面表征。以扫描电镜电子成像技术(SEM)为基础,利用低温液氮吸附实验、高压压汞实验在孔径探测范围及精度上的互补开展联合分析,实现海拉尔盆地下白垩统伊敏组褐煤样品全孔径结构表征,并探讨褐煤孔隙结构的影响因素。结果表明:①研究区煤样总孔容、总孔面积随孔隙尺寸分布存在明显差异。伊敏煤矿等煤样孔体积的贡献主要来自大孔;吸附面积主要由微孔及过渡孔提供。牙克石煤矿煤样孔体积的主要贡献来自微孔,微孔贡献总孔面积的82.07%。②显微组分中腐殖组含量增加有利于微孔、过渡孔发育;惰质组含量的增加有利于中孔、大孔的发育。③煤样结构保存指数、森林指数与总孔容呈正相关关系,与总孔面积呈负相关关系;总孔容随凝胶化指数增大而减小,与总孔面积变化规律相反;地下水流动指数与总孔容、总孔面积间关系不明显。④成煤环境为无覆水的氧化环境,形成原生组织孔丰富、中孔—大孔为主、孔隙形态以槽状孔或狭缝孔为主的孔隙结构。成煤期覆水程度较深时,煤层凝胶化程度高,植物原生组织孔减少,中孔—大孔优先被矿物填充,孔隙结构呈低孔容、高孔面积的特点。
中图分类号:
1 | 赵力,杨曙光. 新疆煤层气产业发展现状及存在的问题[J].中国煤层气,2018,15(3):3-6. |
ZHAO L,YANG S G. Development status and existing problems of Xinjiang’ s CBM industry[J]. Coal Geology of China,2018,15(3):3-6. | |
2 | 孙粉锦,李五忠,孙钦平,等. 二连盆地吉尔嘎朗图凹陷低煤阶煤层气勘探[J]. 石油学报, 2017, 38(5):485-492. |
SUN F J,LI W J, SUN Q P,et al. Low-rank coalbed methane exploration in Jiergalangtu sag,Erlian Basin[J]. Acta Petrolei Sinica, 2017,38(5):485-492. | |
3 | 晋香兰,张培河,吴敏杰. 鄂尔多斯盆地低煤阶煤储层孔隙特征及地质意义[J],煤田地质与勘探,2012,40(10):22-26. |
JIN X L,ZHANG P H,WU M J. Pore features and geological significance of low rank coal reservoirs in Ordos Basin[J]. Coal Geology & Exploration,2012,40(10):22-26. | |
4 | 秦勇,国外煤层气成因与储层物性研究进展与分析[J],地学前缘,2005,12(3):289-298. |
QIN Y. Advances in overseas geological research on coalbed gas:Origin and reservoir characteristics of coalbed gas[J]. Earth Science Frontiers. 2005,12(3):289-298. | |
5 | 傅雪海,秦勇,薛秀谦,等. 煤储层孔、裂隙系统分形研究[J]. 中国矿业大学学报:自然科学版,2001,30(5):225-228. |
FU X H, QIN Y, XUE X Q,al el. Research on fractals of pore and fracture-structure of coal reservoirs[J]. Journal of China University of Mining & Technology,2001,30(5):225-228. | |
6 | 田忠斌,魏书宏,王建青,等. 沁水盆地中东部海陆过渡相页岩微观孔隙结构特征[J]. 煤炭学报,2017,42(7):1818-1827. |
TIAN Z B, WEI S H, WANG J Q,et al. Characteristics of micro-scale pore structures of marine-continental transitional shale from the mid-eastern area,Qinshui Basin[J]. Journal of China Coal Society, 2017,42(7):1818-1827. | |
7 | 陈贞龙,汤达祯,许浩,等.滇东黔西地区煤层气储层孔隙系统与可采性[J]. 煤炭学报,2010,35(8):158-163. |
CHEN Z L, TANG D Z, XU H,et al. The pore system properties of coalbed methane reservoirs and recovery in western Guizhou and eastern Yunnan[J]. Journal of China Coal Society, 2010,35(8):158-163. | |
8 | 张慧,李小彦,郝琦,等.中国煤的扫描电子显微镜研究[M]. 北京:地质出版社,2003:64-72. |
ZHANG H, LI X Y, HAO Q,et al. Study on Coal in China by Scan Electron Microscope[M]. Beijing:Geological Publishing house,2003:64-72. | |
9 | 姚艳斌,刘大锰. 基于核磁共振弛豫谱技术的页岩储层物性与流体特征研究[J]. 煤炭学报, 2018, 43(1):181-189. |
YAO Y B,LIU D M. Petrophysical properties and fluids transportation in gas shale:A NMR relaxation spectrum analysis method[J]. Journal of China Coal Society, 2018,43(1):181-189. | |
10 | 卢双舫,李俊乾,张鹏飞, 等. 页岩油储集层微观孔喉分类与分级评价[J]. 石油勘探与开发, 2018,45(3): 436-444. |
LU S F,LI J Q,ZHANG P F,et al. Classification of microscopic pore-throats and the grading evaluation on shale oil reservoirs[J]. Petroleum Exploration and Development,2018,45(3):436-444. | |
11 | CLARKSON C R,SOLANO N,BUSTINR M, et al. Pore struture characterization of North American shale gas reservoirs using USANS / SANS, gas adsorption,and mercury intrusion[J]. Fuel,2013,103:606-616. |
12 | 肖佃师,卢双舫,陆正元,等. 核磁共振和恒速压汞方法测定致密砂岩孔喉结构[J]. 石油勘探与开发,2016,43(6):962-970. |
XIAO D S,LU S F,LU Z Y,et al. Combining nuclear magnetic resonance and rate-controlled porosimetry to probe the pore-throat structure of tight sandstone[J]. Petroleum Exploration and Development,2016,43(6):962-970. | |
13 | 张吉振,李贤庆,张学庆,等. 煤系页岩储层孔隙结构特征和演化[J]. 煤炭学报,2019,44(S1):195-204. |
ZHANG J Z, LI X Q, ZHANG X Q, et al. Microscopic characteristics of pore structure and evolution in the coal-bearing shale[J]. Journal of China Coal Society, 2019, 44(S1): 195-204. | |
14 | 赵迪斐,郭英海,毛潇潇,等.基于压汞、氮气吸附与FE-SEM 的无烟煤微纳米孔特征[J].煤炭学报,2017,42(6):1517-1526. |
ZHAO D F,GUO Y H,MAO X X,et al. Characteristics of macro-nanopores in anthracite coal based on mercury injection,nitrogen adsorption and FE-SEM[J]. Journal of China Coal Society,2017,42(6): 1517-1526. | |
15 | 李阳,张玉贵,张浪,等. 基于压汞、低温N2吸附和CO2吸附的构造煤孔隙结构表征[J]. 煤炭学报,2019,44 (4):1188-1196. |
LI Y, ZHANG Y G, ZHANG L,et al. Characterization on pore structure of tectonic coals based on the method of mercury intrusion,carbon dioxide adsorption and nitrogen adsorption[J]. Journal of China Coal Society,2019,44(4):1188-1196. | |
16 | 郭彪,邵龙义,张强,等.内蒙古海拉尔盆地早白垩世含煤岩系层序地层与聚煤规律[J].古地理学报, 2014,5(10):632-640. |
GUO B,SHAO L Y,ZHANG Q,et al. Sequence stratigraphy and coal accumulation pattern of the Early Cretaceous coal measures in Hailar Basin, Inner Mongolia[J]. Journal of Paleogeography. 2014,5(10):632-640. | |
17 | 孙斌,邵龙义,赵庆波,等. 海拉尔盆地煤层气成藏机理及勘探方向[J]. 天然气工业,2007, 27(7):12-15. |
SUN B,SHAO L Y,ZHAO Q B,et al. Reservoiring mechanism of coalbed methane and exploration direction in Hailare Basin[J]. Nature Gas Industry,2007,27(7):12-15. | |
18 | CHALMERS G R, BUSTIN R M,POWER I M. Characterization of gas shale pore systems by porosimetry, pycnometry, surface area, and field emission scanning electron microscopy/transmission electron microscopy image analyses: Examples from the Barnett, Woodford, Haynesville, Marcellus, and Doig unit[J]. AAPG Bulletin,2012,96(6):1099-1119. |
19 | SING K S W. Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)[J]. Pure and Applied Chemistry,1985,57(4):603-619. |
20 | 陈萍,唐修义. 低温液氮吸附法与煤中微孔隙特征的研究[J]. 煤炭学报,2001,26(5):552-556. |
CHEN P,TANG X Y. The research on the adsorption of nitrogen in low temperature and micro-pore properties in coal[J]. Journal of China Coal Society,2001,26(5):552-556. | |
21 | 祝武权,汤达祯,许浩,等. 褐煤孔隙结构及比表面积特征[J].煤田地质与勘探,2016,44(6):59-63 |
ZHU W Q,TANG D Z,XU H,et al. Characteristics of pore structure and specific surface area of lignite[J]. Coal Geology & Exploration,2016,44(6):59-63. | |
22 | 张松航,汤达祯,唐书恒,等. 鄂尔多斯盆地东缘煤层气储集与产出条件[J].煤炭学报,2009,34(10):1297-1304. |
ZHANG S H,TANG D Z,TANG S H,et al. Preservation and deliverability characteristics of coalbed methane in eastern margin of Ordos Basin[J].Journal of China Coal Society,2009,34(10):1297-1304. | |
23 | 张松航,汤达祯,唐书恒,等.鄂尔多斯盆地东缘煤储层微孔隙结构特征及其影响因素[J].地质学报,2008,82(10):1341-1349. |
ZHANG S H,TANG D Z,TANG S H,et al. The characters of coal beds micropores and its influence factors in the eastern margin of Ordos Basin[J]. Acta Geologica Sinica,2008,82(10):1341-1349. | |
24 | 张琴,梁峰,梁萍萍,等. 页岩分型特征及主控因素研究[J]. 中国矿业大学学报,2020,49(1):110-122. |
ZHANG Q,LIANG F,LIANG P P,et al. Investigation of fractal characteristics and its main controlling factors of shale reservoir: A case study of the Longmaxi shale in Weiyuan shale gas field[J]. Journal of China University of Mining & Technology,2020,49(1):110-122. | |
25 | 杨峰,宁正福,孔德涛,等. 高压压汞法和氮气吸附法分析页岩孔隙结构[J]. 天然气地球科学,2013, 24(3):450-455. |
YANG F,NING Z F,KONG D T, et al. Pore structure of shales from high pressure mercury injection and nitrogen adsorption method[J]. Natural Gas Geoscience,2013, 24(3):450-455. | |
26 | HODOT B B,宋世钊,王佑安. 煤与瓦斯突出[M]. 北京:中国工业出版社,1966:27-30. |
HODOT B B, SONG S Z, WANG Y A. Outburst of Coal and Coalbed Gas(Chinese Translation)[M].Beijing:China Coal Industry Press,1966:27-30. | |
27 | 王博洋,秦勇,申建,等. 二连盆地褐煤矿物质特征及其对孔隙结构的影响[J]. 煤炭科学技术,2017,45(9): 32-41. |
WANG B Y,QIN Y,SHEN J,et al. Mineral features of lignite in Erlian Basin and influences to pore structure[J]. Coal Science and Technology,2017,45(9):32-41. | |
28 | LU Y J,LIU D M,CAI Y D,et al. Pore-fractures of coalbed methane reservoir restricted by coal facies in Sangjiang-Muling coal-bearing basins, northeast China[J]. Energies, 2020(13):1196. |
29 | DIESSEL C F K. On the correlation between coal facies and depositional environments[C]∥ Advances in the Study of the Sydney Basin Newcastle,1986:19-22. |
30 | DIESSEL C F K. Coal-bearing Depositional Systems[M]. Berlin:Springer,1992:721. |
31 | OSKAY R G,CHRISTANIS K,INANER H,et al. Palaeoenvironmental reconstruction of the eastern part of the Karapınar-Ayrancı coal deposit(central Turkey)[J]. International Journal of Coal Geology,2016(163):100-111. |
32 | 代世峰,任德贻,李生盛,等.内蒙古准格尔黑岱沟主采煤层的煤相演替特征[J].中国科学,D辑,2007,37(S1):119-126. |
DAI S F,REN D Y,LI S S,et al.The evolution and characteristic of coal facies in Heidaigou mine of Junger,Inner Mongolia[J]. Science in China,Series D,2007,37(S1):119-126. | |
33 | ZHANG S H,ANG S H,TAMG D Z,et al. The characteristics of coal reservoir pores and coal facies in Liulin district,Hedong coal field of China[J].International Journal of Coal Geology,2010(81):117-127. |
34 | 张鹏飞,金奎励,吴涛,等. 吐哈盆地含煤沉积与煤成油[M]. 北京:煤炭工业出版社,1997:168-176. |
ZHANG P F,JIN K L,WU T,et al. Coal-bearing Sedimentary and Coal Formed Oil,Turpan-Hami Basin[M]. Beijing:China Coal Industry Press,1997:168-176. | |
35 | KALAITZIDIS S,BOUZINOS A, PAPAZISIMOU S, et al. A short-term establishment of forest fen habitat during Pliocene lignite formation in the Ptolemais Basin, NW Macedonia, Greece[J]. International Journal of Coal Geology, 2004,57(3):243-263. |
36 | CALDER J H,GIBLING M R,MUKHOPADHYAY P. Peat formation in a Westphalian B piedmont setting,Cumberland basin,Nova Scotia:Implications for the maceral-based interpretation of rheotrophic and raised Paleomires[J].Bull De La Societe Geologique De France, 1991,162(2):283-298. |
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