Jianmei Cheng
China University of Geosciences
Structural basinGeomorphologyGeologyHydrologyAquifer
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Publications 10
#1Ning Liu (China University of Geosciences)H-Index: 1
#2Jianmei Cheng (China University of Geosciences)H-Index: 6
The complexity of water–rock–CO2 interactions associated with CO2 geological storage requires more comprehensive understanding with regard to the geochemical characteristics of reservoirs. In this paper, five groups of batch reactions and coupled simulations were conducted, in which rocks of different cementation types were reacted with purified water and CO2 at 180°C and 18 Mpa for 15 days, to reveal the possible geochemical effects of cement mineral variations on water–rock–CO2 interactions. W...
#1Ruirui Zhao (China University of Geosciences)H-Index: 2
#2Jianmei Cheng (China University of Geosciences)H-Index: 6
When CO 2 is injected into saline aquifers, salt precipitation will occur near the injection well. To investigate the effects of temperature on salt precipitation, a series of non‐isothermal numerical models were conducted by simulating the injection of cold CO 2 into the aquifers with relatively high temperature. Some thermal processes, the evolution of CO 2 plume, salt precipitation, the effects of gravity, and permeability reduction were analyzed. Furthermore, the deviance of the isothermal m...
2 CitationsSource
#1Ruirui Zhao (China University of Geosciences)H-Index: 1
#2Jianmei Cheng (China University of Geosciences)H-Index: 6
To investigate the effects of temperature on the CO2 storage in the deep saline aquifers, we set up a 2-D non-isothermal numerical model with simulating the CO2 injection into the aquifers at a low temperature. The evolution of the CO2 plume and the temperature in the aquifer were studied, and using temperature signal to monitor the arrival of CO2 plume was also evaluated. In addition, the deviance of the isothermal model was analyzed. The results show when the cold CO2 is injected into the aqui...
5 CitationsSource
#1Ruirui Zhao (China University of Geosciences)H-Index: 2
#2Jianmei Cheng (China University of Geosciences)H-Index: 6
Last. Fuqiao Xu (China University of Geosciences)H-Index: 1
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This paper presents a basin‐scale model study of the behaviors of CO 2 plume and the potential environmental impacts for large‐scale CO 2 storage in the saline aquifers of Songliao Basin, China. The model covers the whole basin, and vertically consists of most of the Cretaceous strata. In a hypothetical scenario, a total of 1.43 GT CO 2 is injected into the Yaojia Formation (K 2 y) through 20 wells distributing at the center of the basin in 50 years (0.5–2 million tons per injection well per yea...
5 CitationsSource
#1Hailong Li (Anshan Normal University)H-Index: 28
#2Guanyi Li (Anshan Normal University)H-Index: 2
Last. Michel C. Boufadel (TU: Temple University)H-Index: 33
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[1] A confined coastal aquifer usually extends under the sea for some distance with its submarine outlet covered by a thin layer of sediment with properties dissimilar from the aquifer. Previous theoretical studies neglected this outlet capping. In this paper an analytical solution is derived for a confined aquifer subject to tidal fluctuations with a leaky boundary condition at the outlet capping. For the cases that offshore length of the aquifer and/or the leakance of the outlet capping are ei...
63 CitationsSource
#1Jianmei Cheng (China University of Geosciences)H-Index: 6
#2Jennifer C. McIntosh (Johns Hopkins University)H-Index: 32
Last. Jiu Jimmy Jiao (HKU: University of Hong Kong)H-Index: 35
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The Sanzhao depression and Qijia-gulong depression are two of the most important hydrocarbon-bearing sub-depressions in the Songliao basin, dominated by Cretaceous fluvial and lacustrine strata with volcanic and volcaniclastic rocks. In this paper, the pressure distributions and hydrochemistry variations in those two depressions are investigated. It is found that the Qijia-gulong depression is dominated by overpressure, but the Sanzhao depression is dominated by underpressure, especially in the ...
9 CitationsSource
#1Jianmei ChengH-Index: 6
Last. Jjj Jiao
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#1Jianmei Cheng (China University of Geosciences)H-Index: 6
#2C. X. Chen (China University of Geosciences)H-Index: 1
Most karstic aquifer media may be characterized as the triple-void media with highly-varied hydraulic properties, including matrix pore, fissure and conduit, in which liner flow may co-exist with non-linear flow. In this paper, an attempt is made to couple linear flow with non-linear flow in a single unified flow governing equations by introducing the concept of equivalent hydraulic conductivity (EHC) and deriving a general Darcy’s law for various flow. The expression of EHC in the karst conduit...
10 CitationsSource
#1Jianmei ChengH-Index: 6
Last. XN Xie
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#1X.N. Me (China University of Geosciences)H-Index: 1
#2Jiu Jimmy Jiao (HKU: University of Hong Kong)H-Index: 35
Last. Jianmei Cheng (China University of Geosciences)H-Index: 6
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Geochemistry of formation waters in the Shiwu depression of the Songliao basin, northeast China, shows a distinct variation in different pressured systems. The study area is composed of terrigeneous clastics in fluvial–lacustrine environments, which contain formation water with salinity ranging from less than 1000 to 12,000 mg/l. Water composition varies with depth and hydrochemical regions. In the underpressured strata deposited during the rifting period, formation water is characterized by wat...
6 CitationsSource