石墨狭缝吸附页岩气的分子模拟

doi:10.3969/j.issn.1673-8926.2016.06.012

Lithologic Reservoirs ›› 2016, Vol. 28 ›› Issue (6): 88-94.doi: 10.3969/j.issn.1673-8926.2016.06.012

Previous Articles Next Articles

Molecular simulation of shale gas adsorption in graphite slit-pores

He Yingjie ^1，2， Yang Yang^1，2， Zhang Tingshan^1，2， Wu Kunyu^1，3

（1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation， Southwest Petroleum University， Chengdu 610500， China；2. School of Resources and Environment， Southwest Petroleum University， Chengdu 610500， China； 3. Research Institute of Exploration and Development， PetroChina Qinghai Oilfield Company， Dunhuang 736202， Gansu， China）

Received:2016-06-13 Revised:2016-07-28 Online:2016-11-10 Published:2016-11-10

Abstract

Abstract: In order to understand the methane adsorption mechanism in organic matter pores in shale, graphite slit-pores were established to characterize the organic matter pores by using molecular simulation software, the grand canonical Monte Carlo method, molecular mechanics and molecular dynamics were used to simulate methane adsorption in graphite slit-pores at the common shale burial depth of 2-4 km in Yangtze Plate. The results show that the adsorption was physical. With the increasing of temperature and pressure, the adsorption capacity in graphite slit-pores increased dramatically first, then increased slowly, and decreased at last, and the maximum adsorption capacity appeared at the buried depth of 2-4 km （4 km is the best buried depth for shale gas）. The relative density of methane along the normal direction of the graphite slit-pore wall shows a trend of symmetric distribution, which reflects apparent adsorption stratification, and it reduced with the increase of buried depth. The self-diffusion coefficient of methane increased with the increase of buried depth, which is consistent with the changes of adsorption heat and adsorption capacity.

Key words: rock, permeability, gas, slippage effect, Klinkenberg effect, Knudsen number

He Yingjie， Yang Yang， Zhang Tingshan， Wu Kunyu. Molecular simulation of shale gas adsorption in graphite slit-pores[J].Lithologic Reservoirs, 2016, 28(6): 88-94.

References

Related Articles 15

[1]	ZHANG Peijun, XIE Mingxian, LUO Min, ZHANG Liangjie, CHEN Renjin, ZHANG Wenqi, YUE Xingfu, LEI Ming. Analysis of deformation mechanism of ultra thick gypsum salt rock and its significance for oil and gas reservoir formation：A case study of the Jurassic gypsum salt layers in theAgayry region，eastern right bank of theAmu Darya River [J]. Lithologic Reservoirs, 2024, 36(6): 36-44.
[2]	YIN Lu, LI Bo, QI Wen, SUN Dong, YUE Xingfu, MA Hui. Origins and accumulation characteristics of large-scale generation of natural hydrogen [J]. Lithologic Reservoirs, 2024, 36(6): 1-11.
[3]	Guan Yunwen, Su Siyu, Pu Renhai, Wang Qichao, Yan Sujie, Zhang Zhongpei, Chen Shuo, Liang Dongge. Palaeozoic gas reservoir-forming conditions and main controlling factors in Xunyi area，southern Ordos Basin [J]. Lithologic Reservoirs, 2024, 36(6): 77-88.
[4]	BAI Yubin, LI Mengyao, ZHU Tao, ZHAO Jingzhou, REN Haijiao, WU Weitao, WU Heyuan. Geochemical characteristics of source rocks and evaluation of shale oil “sweet spot”of Permian Fengcheng Formation in Mahu Sag [J]. Lithologic Reservoirs, 2024, 36(6): 110-121.
[5]	QU Weihua, TIAN Ye, DONG Changchun, GUO Xiaobo, LI Lili, LIN Siya, XUE Song, YANG Shihe. Characteristics of Cretaceous source rocks and their controlling effect on hydrocarbon accumulation in Dehui Fault Depression，Songliao Basin [J]. Lithologic Reservoirs, 2024, 36(6): 122-134.
[6]	XIAO Boya. Characteristics and favorable zone distribution of tuff reservoirt of Cretaceous in A’nan sag，Erlian Basin [J]. Lithologic Reservoirs, 2024, 36(6): 135-148.
[7]	WANG Yifeng, TIAN Jixian, LI Jian, QIAO Tong, LIU Chenglin, ZHANG Jingkun, SHA Wei, SHEN Xiaoshuang. Geochemical characteristics of Permian condensate oil and gas and phase types in southwest of Mahu Sag [J]. Lithologic Reservoirs, 2024, 36(6): 149-159.
[8]	QIAO Tong, LIU Chenglin, YANG Haibo, WANG Yifeng, LI Jian, TIAN Jixian, HAN Yang, ZHANG Jingkun. Characteristics and genetic mechanism of condensate oil and gas of the Jurassic Sangonghe Formation in western well Pen-1 sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 169-180.
[9]	YU Qixiang, LUO Yu, DUAN Tiejun, LI Yong, SONG Zaichao, WEI Qingliang. Reservoir forming conditions and exploration prospect of Jurassic coalbed methane encircling Dongdaohaizi sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 45-55.
[10]	ZHANG Tianze, WANG Hongjun, ZHANG Liangjie, ZHANG Wenqi, XIE Mingxian, LEI Ming, GUO Qiang, ZHANG Xuerui. Application of ray-path elastic impedance inversion in carbonate gas reservoir prediction of the right bank of Amu Darya River [J]. Lithologic Reservoirs, 2024, 36(6): 56-65.
[11]	RAN Yixuan, WANG Jian, ZHANG Yi. Favorable exploration area and formation condition of bedrock reservoir in the of central paleo-uplift，northern Songliao Basin [J]. Lithologic Reservoirs, 2024, 36(6): 66-76.
[12]	WANG Zixin, LIU Guangdi, YUAN Guangjie, YANG Henglin, FU Li, WANG Yuan, CHEN Gang, ZHANG Heng. Characteristics and reservoir control of source rocks of Triassic Chang 7 member in Qingcheng area，Ordos Basin [J]. Lithologic Reservoirs, 2024, 36(5): 133-144.
[13]	YANG Haibo, FENG Dehao, YANG Xiaoyi, GUO Wenjian, HAN Yang, SU Jiajia, YANG Huang, LIU Chenglin. Characteristics of source rocks and thermal evolution simulation of Permian Pingdiquan Formation in Dongdaohaizi Sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(5): 156-166.
[14]	SU Hao, GUO Yandong, CAO Liying, YU Chen, CUI Shuyue, LU Ting, ZHANG Yun, LI Junchao. Natural depletion characteristics and pressure maintenance strategies of faultcontrolled fracture-cavity condensate gas reservoirs in Shunbei Oilfield [J]. Lithologic Reservoirs, 2024, 36(5): 178-188.
[15]	YAN Jianping, LAI Siyu, GUO Wei, SHI Xuewen, LIAO Maojie, TANG Hongming, HU Qinhong, HUANG Yi. Research progress on casing deformation types and influencing factors in geological engineering of shale gas wells [J]. Lithologic Reservoirs, 2024, 36(5): 1-14.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 10

[1]	YANG Zhanlong,ZHANG Zhenggang,CHEN Qilin,GUO Jingyi,SHA Xuemei,LIU Wensu. Using multi-parameters analysis of seismic information to evaluate lithologic traps in continental basins[J]. Lithologic Reservoirs, 2007, 19(4): 57 -63 .
[2]	FANG Chaohe, WANG Yifeng, ZHENG Dewen, GE Zhixin. Maceral and petrology of Lower Tertiary source rock in Qintong Sag, Subei Basin[J]. Lithologic Reservoirs, 2007, 19(4): 87 -90 .
[3]	LIN Chengyan, TAN Lijuan, YU Cuiling. Research on the heterogeneous distribution of petroleum(Ⅰ)[J]. Lithologic Reservoirs, 2007, 19(2): 16 -21 .
[4]	WANG Tianqi, WANG Jiangong, LIANG Sujuan, SHA Xuemei. Fine oil exploration of Putaohua Formation in Xujiaweizi area, Songliao Basin[J]. Lithologic Reservoirs, 2007, 19(2): 22 -27 .
[5]	WANG Xiwen,SHI Lanting,YONG Xueshan,YNAG Wuyang. Study on seismic impedance inversion[J]. Lithologic Reservoirs, 2007, 19(3): 80 -88 .
[6]	HE Zongbin,NI Jing,WU Dong,LI Yong,LIU Liqiong,TAI Huaizhong. Hydrocarbon saturation determined by dual-TE logging[J]. Lithologic Reservoirs, 2007, 19(3): 89 -92 .
[7]	YUAN Shengxue,WANG Jiang. Identification of the shallow gas reservoir in Shanle area,Tuha Basin[J]. Lithologic Reservoirs, 2007, 19(3): 111 -113 .
[8]	CHEN Fei，WEI Dengfeng，YU Xiaolei，WU Shaobo. Sedimentary facies of Chang 2 oil-bearing member of Yanchang Formation in Yanchi-Dingbian area, Ordos Basin[J]. Lithologic Reservoirs, 2010, 22(1): 43 -47 .
[9]	XU Yunxia，WANG Shanshan，YANG Shuai. Using Walsh transform to improve signal-to-noise ratio of seismic data[J]. Lithologic Reservoirs, 2009, 21(3): 98 -100 .
[10]	LI Jianming，SHI Lingling，WANG Liqun，WU Guangda. Characteristics of basement reservoir in Kunbei fault terrace belt in southwestern Qaidam Basin[J]. Lithologic Reservoirs, 2011, 23(2): 20 -23 .

TRENDMD: