Subproject A4 Numerical Modelling

The formation of submarine gas hydrates and their spatial distribution in the subsurface depends on a variety of sensitive control parameters, e.g. the in-situ production of methane, the advection of dissolved and gaseous methane, the existence of fluid pathways as well as the porosity and permeability of sediments. Hence, the quantification of gas hydrate inventories is still largely unconstrained in most regions. This project aims at the numerical simulation of potential gas hydrate reservoirs for selected, well-known locations to predict their 3-D-distribution within the sedimentary sequence. In addition, we plan to give constraints on the long-term stability of gas hydrate reservoirs in order to get a better understanding of their temporal dynamics.

The numerical model „PetroMod“ (IES company), a standard exploration tool in the oil and gas industry will be used to develop a new, 3-D-model for the simulation of sub-seafloor gas hydrate occurrences. A major task is the implementation of biogeochemical approaches with respect to gas hydrate formation / dissolution as well as the temporal and spatial resolution of the basis model. This approach will particularly enhance our knowledge with regard to the simulation of pathways for fluid and gas transport in consolidated sediments and hence, the potential enrichment of gas hydrates within certain sedimentary strata.


Clennell, M., Hovland, M., Booth, J.S., Henry, P. & Winters, W.J.Formation of natural gas hydrates in marine sediments 1. Conceptual model of gas hydrate growth conditioned by host sediment properties 1999Journal of Geophysical Research-Solid Earth
Vol. 104(B10), pp. 22985-23003 
Haeckel, M., Boudreau, B.P. & Wallmann, K.Bubble-induced porewater mixing: A 3-D model for deep porewater irrigation 2007Geochimica et Cosmochimica Acta
Vol. 71, pp. 5135–5154 
Haeckel, M., Suess, E., Wallmann, K. & Rickert, D.Rising methane gas bubbles form massive hydrate layers at the seafloor 2004Geochimica Et Cosmochimica Acta
Vol. 68(21), pp. 4335-4345 
Hensen, C. & Wallmann, K.Methane formation at Costa Rica continental margin - constraints for gas hydrate inventories and cross-decollement fluid flow 2005Earth and Planetary Science Letters
Vol. 236(1-2), pp. 41-60 
Luff, R. & Wallmann, K.Fluid flow, methane fluxes, carbonate precipitation and biogeochemical turnover in gas hydrate-bearing sediments at Hydrate Ridge, Cascadia Margin: Numerical modeling and mass balances 2003Geochimica Et Cosmochimica Acta
Vol. 67(18), pp. 3403-3421 
Milkov, A.V.Molecular and stable isotope compositions of natural gas hydrates: A revised global dataset and basic interpretations in the context of geological settings 2005Organic Geochemistry
Vol. 36(5), pp. 681-702 
Schmidt, M., Hensen, C., Morz, T., Muller, C., Grevemeyer, I., Wallmann, K., Mau, S. & Kaul, N.Methane hydrate accumulation in "Mound 11" mud volcano, Costa Rica forearc 2005Marine Geology
Vol. 216(1-2), pp. 83-100 
Sloan, E.D.J. & Koh, C.Clathrate hydrates of natural gases 2008, pp. 537-628 inbookURL 
Tishchenko, P., Hensen, C., Wallmann, K. & Wong, C.S.Calculation of the stability and solubility of methane hydrate in seawater 2005Chemical Geology
Vol. 219(1-4), pp. 37-52 
Torres, M.E., Wallmann, K., Trehu, A.M., Bohrmann, G., Borowski, W.S. & Tomaru, H.Gas hydrate growth, methane transport, and chloride enrichment at the southern summit of Hydrate Ridge, Cascadia margin off Oregon 2004Earth and Planetary Science Letters
Vol. 226(1-2), pp. 225-241 
Tréhu, A., Torres, M., Bohrmann, G. & Colwell, F.Leg 204 synthesis: Gas hydrate distribution and dynamics in the central Cascadia accretionary complex. 2006Proceedings of the Ocean Drilling Program, Scientific Results, pp. 1-41 incollectionDOI  
Wallmann, K., Aloisi, G., Haeckel, M., Obzhirov, A., Pavlova, G. & Tishchenko, P.Kinetics of organic matter degradation, microbial methane generation, and gas hydrate formation in anoxic marine sediments 2006Geochimica Et Cosmochimica Acta
Vol. 70(15), pp. 3905-3927 
Wellsbury, P., Goodman, K., Barth, T., Cragg, B.A., Barnes, S.P. & Parkes, R.J.Deep marine biosphere fuelled by increasing organic matter availability during burial and heating 1997Nature
Vol. 388(6642), pp. 573-576