中煤级煤甲烷饱和吸附量的数值模拟计算

doi:10.16085/j.issn.1000-6613.2019-1701

摘要/Abstract

摘要：

根据表征中煤级煤（镜质组最大反射率R_o,max=0.65%～2.50%）的系列等温吸附（20℃、30℃、40℃和50℃这4个实测温度）“煤变质程度-压力-吸附量”的三变量数学方程，建立一组“煤变质程度-温度-压力-吸附量”这4个共同存在并相互影响的四变量数学方程。该四变量数学方程用于预测1200m以浅的中煤级煤甲烷饱和吸附量。这种数学转换的平均相对误差在7.28%～9.49%之间。有处理中煤级煤甲烷饱和吸附量的数值模拟的软件著作。只要将5个实测数据：镜质组最大反射率R_0,max、温度梯度、压力梯度、埋深和恒温层温度，输入相应可编辑文本框中，就可以输出5个值：饱和吸附量V、温度-压力-吸附量方程中的参数（A、B、Δ、β）。还可以输出在自己感兴趣的镜质组最大反射率R_0,max、温度梯度、压力梯度、埋深和恒温层温度下，“R_0,max值时温压吸附曲面”和“吸附量随埋深变化图”。

关键词: 中煤级煤, 镜质组最大反射率, 温度, 压力, 吸附量

Abstract:

A set of four-variable mathematical equations has been established from a series of three-variable mathematical equations to predict the methane adsorption capacity in middle-rank coals (the maximum reflectivity of vitrinite R_0,max=0.65%—2.50%) under the temperature (20—50℃) or the buried depth shallower than 1200 meters.The average relative error of this mathematical transformation is between 7.28% and 9.49%. There is a specific Software Works to deal with the numerical simulation of methane adsorption capacity in middle-rank coal. As long as five pieces of measured data: the maximum reflectivity of vitrinite R_0,max, temperature gradient, pressure gradient, buried depth and the temperature of constant temperature layer, are inputted, the values of the methane adsorption capacity V, parameters (A、B、Δ、β) can be calculated and outputted. Under certain maximum reflectivity of vitrinite R_0,max value, two drawing of “curved surface of adsorption capacity-temperature-pressure” and “curve of adsorption capacity-buried depth” can be obtained.

Key words: middle-rank coal, maximum reflectivity of vitrinite, temperature, pressure, adsorption capacity

中图分类号:

TD712

张学梅, 马青华, 郝静远, 李东. 中煤级煤甲烷饱和吸附量的数值模拟计算[J]. 化工进展, 2020, 39(S2): 162-167.

Xuemei ZHANG, Qinghua MA, Jingyuan HAO, Dong LI. Numerical simulation of the methane adsorption capacity in middle-rank coal[J]. Chemical Industry and Engineering Progress, 2020, 39(S2): 162-167.

图/表 7

图1 在不同镜质组最大反射率下温度-压力-吸附方程产生的相对平均误差

图2 在不同镜质组最大反射率下的压力影响参数β

图3 在不同镜质组最大反射率下的温度影响参数Δ

图4 在不同镜质组最大反射率下的吸附流量系数B

图5 在不同镜质组最大反射率下的吸附流量系数B的自然对数

图6 R0,max值时温压吸附曲面

图7 吸附量随埋深的变化

参考文献 20

1	YI J, AKKUTLU I Y, KARACAN C O, et al. Gas sorption and transport in coals: a poroelastic medium approach[J]. International Journal of Coal Geology, 2009,77(1/2): 137-144.
2	ZHANG H, LIU J, ELSWORTH D. How sorption-induced matrix deformation affects gas flow in coal seams: a new Fe model[J]. International Journal of Rock Mechanics and Mining Sciences, 2008, 45(8): 1226-1236.
3	张政, 秦勇, WANG Guoxiong, 等. 基于等温吸附实验的煤层气解吸阶段数值描述[J]. 中国科学：地球科学, 2013, 43(8): 1352-1358.
	ZHANG Zheng, QIN Yong, WANG Guoxiong, et al. Numerical description of coalbed methane desorption stages based on isothermal adsorption experiment[J]. Scientia Sinica(Terrae), 2013, 43(8): 1352-1358.
4	ALI N D, KAMRAN G, KAVEH A, et al. The effects of natural fracure dip and strike on hydraulic fracture propagation[J]. International Journal of Rock Mechanics and Mining Sciences, 2015, 75: 210-215.
5	ZENG Lianbo, JIANG Jianwei, YANG Yongli. Fracture in the low porosity and ultra low permeability glutenite reservoirs: a case study of the late eocene hetaoyuan formation in the Anpeng Oilfiled. Nanxing Basin, China[J]. Marine and Petroleum Geology, 2010, 27(7): 1642-1650.
6	QIN Yong, YE Jianping, LIN Dayang. Geological seeking for potential CBM-accumulating zones and districts in China[C]//Proceedings of the ‘2000 Int Sympusiutn on Mining and Science and Technology’, Rotterdam: Balkema Publishers, 2001: 243-246.
7	SONG Yan, LIU Shaobo, ZHANG Qun, et al. Coalbed methane genesis, occurrence and accumulation in China[J]. Petroleum Science, 2012, 9(3): 269-280.
8	SU Xianbo, LIN Xiaoying, ZHAO Mengjun, et al. The upper paleozoic coalbed methane system in the Qinshui Basin, China[J]. Aapg Bulletin, 2005, 89(1): 81-100.
9	傅雪海, 秦勇, 权彪, 等. 中煤级煤吸附甲烷的物理模拟与数值模拟研究[J]. 地质学报, 2008, 82(10): 1368-1371.
	FU Xuehai, QIN Yong, QUAN Biao, et al. Study of physical and numerical simulations of adsorption methane content on middle-rank coal[J]. Acta Geologica Sinica, 2008, 82(10): 1368-1371.
10	赵丽娟, 秦勇, WANG Geoff, 等. 高温高压条件下深部煤层气吸附行为[J]. 高校地质学报, 2013, 19(4): 648-654.
	ZHAO Lijuan, QIN Yong, WANG Geoff, et al. Adsorption behavior of deep coalbed methane under high temperatures and pressures[J]. Geological Journal of China Universities, 2013, 19(4): 648-654.
11	张群, 桑树勋. 煤层吸附特征及储气机理[M]. 北京: 科学出版社，2013: 41-43,110-117.
	ZHANG Qun, SANG Shuxun. Coal bed adsorption characteristics and gas storage mechanism[M]. Beijing: Science Press,2013: 41-43,110-117．
12	秦勇, 申建, 王宝文, 等. 深部煤层气成藏效应及其耦合关系[J].石油学报, 2012, 33(1): 48-54.
	QIN Yong, SHEN Jian,WANG Baowen, et al. Accumulation effects and coupling relationship of deep coalbed methane[J]. Acta Petrolei Sinica, 2012, 33(1): 48-54.
13	马东明, 张遂安, 蔺亚兵. 煤的等温吸附解吸实验及其精确拟合[J]. 煤炭学报, 2011, 36(3): 476-480．
	MA Dongming, ZHANG Suian, LIN Yabing. Isothermal adsorption desorption experiment of coal and its accurate fitting[J]. Journal of Coal, 2011, 36(3): 476-480．
14	李东, 张学梅, 郝静远, 等. 基于吸附验证的煤层气含量的可行性研究[J]. 煤炭科学技术, 2018, 46(9): 27-31.
	LI Dong, ZHANG Xuemei, HAO Jingyuan, et al. Feasibility study of coalbed methane content test based on adsorption approved[J]. Coal Science and Technology, 2018, 46(9): 27-31.
15	李东, 郝静远. 无机膜气体分离的温度-压力-渗透率方程及其在吸附上的应用[J]. 膜科学与技术, 2018, 38(4): 127-131.
	LI Dong, HAO Jingyuan. Temperature-pressure-permeability equation of gas separation in inorganic membrane and its application on adsorption[J]. Membrane Science and Technology, 2018, 38(4): 127-131.
16	李东, 郝静远, 张学梅, 等. 温度-压力-吸附方程回归样本集的建立与计算——以陕西焦坪崔家沟煤为例[J]. 非常规油气, 2018, 5(2): 46-49.
	LI Dong, HAO Jingyuan, ZHANG Xuemei, et al. To establish and calculate the regression sample set for temperature-pressure—adsorption equation-taking Shaanxi Jiaoping Cuijiagou Coal as an example[J]. Unconventional Oil & Gas, 2018, 5(2): 46-49.
17	张学梅, 马青华, 郝静远, 等. 努尔森扩散对崔家沟煤温度压力吸附所作贡献的数值分析[J]. 煤质技术, 2019(3): 20-22.
	ZHANG Xuemei, MA Qinghua, HAO Jingyuan, et al. Numerical analysis of the contribution of Knudsen diffusion to temperature and pressure adsorption for Cuijiagou coal[J]. Goal Quality Technology, 2019(3): 20-22.
18	西安思源学院. 李东, 张学梅, 马青华,等. 基于煤岩分析及温度-压力-吸附量方程预测煤层气量的软件V1.0[CP/CD]. 著作权登记号: 2019SR0722572.
	Xi'an Siyuan University. LI Dong, ZHANG Xuemei, MA Qinghua,et al. Software V1.0 for predicting coalbed methane based on coal rock analysis and temperature pressure adsorption equation[CP/CD]. Copyright Registration No: 2019SR0722572.
19	ZHANG Qingling. Adsorption mechanism of different coal ranks under variable temperature and pressure conditions[J]. Journal of China University of Mining & Technology, 2008, 18(3): 395-400.
20	降文萍. 基于等温吸附实验的温度对煤层气含量影响研究[J]. 中国煤层气, 2014, 11(5): 3-6.
	JIANG Wenping. Study on the effect of temperature on coalbed methane content based on the isothermal adsorption experiment[J]. China Coalbed Methane, 2014, 11(5): 3-6.

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