柴达木盆地马海盐湖储卤层渗透特征及卤水富集机制

doi:10.13249/j.cnki.sgs.2022.11.018

Abstract

Abstract:

The permeability coefficient of brine reservoir in the Mahai Salt Lake of Qaidam Basin was determined by field pumping test, and its permeability was analyzed by the occurrence characteristics and sedimentary environment of underground brine. The results showed that most of the rock salt layers in this area are impure, the rock salt crystals are wrapped with mud and sand, and the crystals are also filled with mud and sand. During the period of rock salt deposition, the permeability of the brine reservoirs formed during the evolution of the geological environment varied considerably due to the influence of floods and intermittent rivers, and the connectivity of the regional subsurface brine was weak. According to the drilling data of 27 mining wells and the monitoring data of underground brine in the experimental mining area, the brine reservoir was classified differentially. The brine reservoirs exposed by the drilling were divided into three types. The brine enrichment performance of different types of brine reservoirs is quite different. Through the analysis of the lithology, pore characteristics and supply conditions of borehole cores, the basic conditions for strong brine enrichment performance were obtained: The brine reservoir has a natural good particle skeleton and a stable brine supply source and channel. According to the permeability of brine reservoir and the law of brine enrichment, the experimental mining area of the Mahai Salt Lake was divided into different underground brine enrichment sections.

Key words: permeability coefficient, pumping test, brine enrichment, brine reservoir, the Mahai Salt Lake

CLC Number:

P641.3

Hu Shuya, Ren Jie, Li Jiqing, Zhao Quansheng. Permeability and Brine Enrichment Mechanism of Brine Reservoir in the Mahai Salt Lake, Qaidam Basin[J].SCIENTIA GEOGRAPHICA SINICA, 2022, 42(11): 2039-2046.

Figures/Tables 9

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References 20

[1]	张彭熹. 柴达木盆地盐湖[M]. 北京: 科学出版社, 1987.
	Zhang Pengxi. Salt lake of Qaidam Basin. Beijing: Science Press, 1987.
[2]	张人权, 梁杏, 靳孟贵, 等. 水文地质学基础[M]. 北京: 地质出版社, 2011.
	Zhang Renquan, Liang Xing, Jin Menggui et al. Fundamentals of Hydrogeology. Beijing: Geological Publishing House, 2011.
[3]	梅丹, 刘海霞. 钾盐产业发展态势以及对我国粮食安全的战略意义[J]. 中国矿业, 2015, 24(5): 10-12 doi: 10.3969/j.issn.1004-4051.2015.05.003
	Mei Dan, Liu Haixia. Development situation of potash industry and its strategic significance to food security in China. China Mining, 2015, 24(5): 10-12 doi: 10.3969/j.issn.1004-4051.2015.05.003
[4]	袁见齐. 柴达木盆地中盐湖的类型[J]. 地质学报, 1959, 39(3): 84-89
	Yuan Jianqi. Types of salt lakes in Qaidam Basin. Acta Geologica Sinica, 1959, 39(3): 84-89
[5]	陈克造, 杨绍修, 郑喜玉. 青藏高原的盐湖[J]. 地理学报, 1981, 47(1): 13-21 doi: 10.3321/j.issn:0375-5444.1981.01.002
	Chen Kezao, Yang Shaoxiu, Zheng Xiyu. Salt lakes in Tibetan Plateau. Acta Geographica Sinica, 1981, 47(1): 13-21 doi: 10.3321/j.issn:0375-5444.1981.01.002
[6]	焦鹏程, 张建伟, 姚佛军, 等. 马海盐湖深部卤水钾盐勘查与研究进展[J]. 矿床地质, 2016, 35(6): 1305-1308
	Jiao Pengcheng, Zhang Jianwei, Yao Fojun et al. Exploration and research progress of potassium salt in deep brine of Mahai Salt Lake. Minal Deposits, 2016, 35(6): 1305-1308
[7]	马金元, 胡生忠, 田向东. 柴达木盆地马海钾盐矿床沉积环境与开发[J]. 盐湖研究, 2010, 18(3): 9-17
	Ma Jinyuan, Hu Shengzhong, Tian Xiangdong. Sedimentary environment and development of Mahai potash deposit in Qaidam Basin. Journal of Salt Lake Research, 2010, 18(3): 9-17
[8]	刘叔琴, 张发胜. 柴达木马海盆地沉积环境和成盐作用[M]. 北京: 地质出版社, 1992.
	Liu Shuqin, Zhang Fasheng. Sedimentary environment and salt-forming in Mahai Basin, Qaidam Basin. Beijing: Geological Publishing House, 1992.
[9]	赵全升, 胡舒娅, 冯娟, 等. 柴达木盆地盐湖卤水层给水度分布变化特征[J]. 地理科学, 2017, 37(1): 148-153
	Zhao Quansheng, Hu Shuya, Feng Juan et al. Distribution and variation characteristics of specific yield in brine aquifer of the saline lake in Qaidam Basin. Scientia Geographica Sinica, 2017, 37(1): 148-153
[10]	Hu S Y, Zhao Q S, Wang G C et al. Hydrochemical dynamic characteristics and evolution of underground brine in the Mahai Salt Lake of the Qaidam Basin Qinghai-Tibet Plateau[J]. Acta Geologica Sinica (English Edition), 2018, 92(5): 1981-1990 doi: 10.1111/1755-6724.13690
[11]	Houston J, Butcher A, Ehren P et al. The evaluation of brine prospects and the requirement for modifications to filing standards[J]. Economic Geology, 2011, 106(7): 1225.
[12]	李慈君, 杨立中, 周训, 等. 深层卤水资源量评价的研究[M]. 北京: 地质出版社, 1992.
	Li Cijun, Yang Lizhong, Zhou Xun et al. Beijing: Geological Publishing House, 1992.
[13]	Arif M, Jones F, Barifcani A et al. Electrochemical investigation of the effect of temperature, salinity and salt type on brine/mineral interfacial properties[J]. International Journal of Greenhouse Gas Control, 2017, 59: 136-147 doi: 10.1016/j.ijggc.2017.02.013
[14]	李洪普, 侯献华, 郑绵平, 等. 柴达木盆地西部更新统砂砾型深层卤水钾矿成矿模式与找矿方向探讨[J]. 湖泊科学, 2022, 34(3): 1043-1054 doi: 10.18307/2022.0327
	Li Hongpu, Hou Xianhua, Zheng Mianping et al. Discussion on metallogenic model and prospecting direction of Pleistocene gravel brine Potassium deposit in western Qaidam Basin. Journal of Lake Sciences, 2022, 34(3): 1043-1054 doi: 10.18307/2022.0327
[15]	陈连禹, 鲍永恩, 何山贵. 察尔汗区段钾镁液体矿床盐岩渗透性的研究[J]. 盐湖研究, 1981(Z1): 45-58
	Chen Lianyu, Bao Yongen, He Shangui. Study on permeability of salt rock of potassium-magnesium liquid deposit in Qarhan section. Journal of Salt Lake Research, 1981(Z1): 45-58
[16]	胡云峰, 李万月. 察尔汗盐湖别勒滩首采区钻井采卤试验水文地质参数计算[J]. 青海地质, 1999(1): 58-66
	Hu Yunfeng, Li Wanyue. Calculation of hydrogeological parameters of halogen mining experiment in Bieletan area of Qarhan Salt Lake. Qinghai Geology, 1999(1): 58-66
[17]	杨海镇, 马海州, 高东林. 同位素131Ⅰ测西台吉乃尔湖矿区含水层地质参数[J]. 盐湖研究, 2008, 16(1): 8-11
	Yang Haizhen, Ma Haizhou, Gao Donglin. Isotope 131 I measurement of geological parameters of aquifer in Jinaier Lake mining area, Xitai. Journal of Salt Lake Research, 2008, 16(1): 8-11
[18]	顾新鲁, 于咏梅, 李明, 等. 液体矿产资源估算中储卤介质孔隙(给水)度参数的计算分析[J]. 盐湖研究, 2009, 17(4): 32-36
	Gu Xinlu, Yu Yongmei, Li Ming et al. Calculation and analysis of porosity (Water supply) parameters of brine storage medium in liquid mineral resources estimation. Journal of Salt Lake Research, 2009, 17(4): 32-36
[19]	赵英杰, 胡舒娅, 赵全升, 等. 开采条件下马海盐湖地下卤水水化学演化特征[J]. 世界地质, 2020, 39(3): 693-699 doi: 10.3969/j.issn.1004-5589.2020.03.020
	Zhao Yingjie, Hu Shuya, Zhao Quansheng et al. Hydrochemical evolution characteristics of underground brines in Mahai Salt Lake under mining conditions. World Geology, 2020, 39(3): 693-699 doi: 10.3969/j.issn.1004-5589.2020.03.020
[20]	Hu S Y, Xiao C L, Liang X J et al. Porosity distribution characteristics and geological analysis of brine storage medium in the Qaidam Basin, Western China[J]. Chinese Geographical Science, 2018, 28(4): 707-716 doi: 10.1007/s11769-018-0979-x

孔号	孔深/m	涌水量/(m³/d)	降深/m	渗透系数/(m/d)
K1	115	6254	2.05	46.09
K2	130	87	33.00	0.50
K3	100	97	24.00	0.40
K4	120	6000	0.50	38.00
K5	120	1400	0.10	49.00
K6	100	5000	0.30	48.00
K7	100	7000	0.65	43.00
K8	110	202	5.00	0.25
K9	110	186	5.00	0.23
K10	110	378	5.00	0.48
K12	100	2862	0.32	113.97
K13	100	4368	0.21	132.14
K14	100	2334	0.10	53.53
K15	110	5520	18.40	42.00
K16	110	5520	13.45	34.00
K17	110	3989	3.61	24.32
K18	100	5520	5.87	26.00
K21	100	3438	1.07	95.10
K22	100	3756	5.73	80.03
K24	100	264	15.00	12.00
K25	100	4150	0.31	94.69
K26	100	3789	0.41	55.70
K27	100	1350	5.40	21.00
K28	100	1235	5.90	18.00
T1	151	2236	6.63	20.98
T2	150	181	28.27	0.31
T3	151	181	31.63	0.10

孔号	孔深/m	主要岩性	厚度/m	平均孔隙度/%	平均渗透系数/（m/d）	出水量/（m³/d）	渗透性能
K1	115	含淤泥粉砂石盐、含粉砂石盐	72.10	21.20	46.09	6254	强
T1	151	含粘土石盐、含粉砂石盐	40.04	14.67	20.98	2236	中等
T3	151	石盐、含粘土石盐	30.80	11.28	0.10	181	弱

Permeability and Brine Enrichment Mechanism of Brine Reservoir in the Mahai Salt Lake, Qaidam Basin

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