Refine your search
Collections
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Daemen, J. J. K.
- Equivalent Permeability Model for Sealing Evaluation of Natural Gas Storage Cavern in Bedded Rock Salt
Abstract Views :216 |
PDF Views:132
Authors
Affiliations
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, CN
2 College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266555, CN
3 Mackay School of Earth Sciences and Engineering, University of Nevada, Reno 89557, Nevada, US
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, CN
2 College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266555, CN
3 Mackay School of Earth Sciences and Engineering, University of Nevada, Reno 89557, Nevada, US
Source
Current Science, Vol 108, No 4 (2015), Pagination: 723-729Abstract
An equivalent permeability model (EPM) is presented to calculate the equivalent permeability of non-salt layers, which makes the sealing evaluation of bedded salt cavern natural gas storage by numerical simulation easy and sufficient. In the numerical simulations, the effects of non-salt layer property parameters, i.e. horizontal permeability, vertical permeability and dip angle on the sealing of bedded salt cavern natural gas storage can be expressed by a single parameter, the equivalent permeability. We have studied the influence of non-salt dip angle, permeability anisotropy, permeability, buried depth, gas pressure, etc. on the time that it takes for the natural gas to migrate to the ground surface through the non-salt layer formation. The examples show that the EPM is precise and correct, and can meet the actual engineering demands, which includes fewer parameters, and it is implemented easily in numerical simulations. The time needed for natural gas to migrate to the surface is proportional to the increase in anisotropy of permeability and buried depth, but inversely proportional to the increase of non-salt layer dip angle, permeability and internal pressure. The permeability and the dip angle of non-salt layers are the key factors to be considered when analysing the sealing of bedded salt cavern natural gas storage.Keywords
Numerical Simulation, Permeability Anisotropy, Salt Cavern, Sealing.Full Text
- Experimental Study on The Hydraulic Fracture Propagation In Shale
Abstract Views :248 |
PDF Views:80
Authors
Affiliations
1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan Province - 454000, CN
2 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei - 430071, CN
3 Machay School of Earth Sciences and Engineering, University of Nevada, Reno, NV, US
1 School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan Province - 454000, CN
2 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei - 430071, CN
3 Machay School of Earth Sciences and Engineering, University of Nevada, Reno, NV, US
Source
Current Science, Vol 115, No 3 (2018), Pagination: 465-475Abstract
To realize the control on geometry of fracture network and improve the individual well production of shale gas reservoirs, hydraulic fracturing simulation tests of shale outcrops for horizontal well were carried out. This was based on an established true triaxial hydraulic fracturing simulation test system, to analyse the propagation and formation of a complex fracture network. The results show that the typical severe fluctuation of pump pressure during extension, is an obvious feature of hydraulic fracturing by Stimulated Reservoir Volume (SRV). Due to the large size and abundant natural fractures in shale specimens, the acoustic emission (AE) energy is weak during propagation of hydraulic fractures. However, fracture propagation can still be effectively determined to some extent, although relatively few AE events are detected. Hydraulic fractures from horizontal well initiate approximately along the maximal in situ stress. But the fractures gradually deviate from the orientation when extending. Branching, re-orientation or penetrating bedding planes and then interconnecting with natural fractures or weak beddings are the main mechanisms of the formation of complicated fracture networks.Keywords
Fracture Propagation, Fracture Network, Hydraulic Fracturing, Shale, Stimulated Reservoir Volume.Full Text
References
- Clarkson, C. R et al., Pore structure characterization of North American shale gas reservoirs using USANS/SANS, gas adsorption, and mercury intrusion. Fuel, 2013, 103, 606–616.
- Zou, C. et al., Geological characteristics, formation mechanism and resource potential of shale gas in China. Petrol. Exp. Dev., 2010, 37(6), 641–653.
- Cipolla, C. L. et al., The relationship between fracture complexity, reservoir properties, and fracture treatment design. In SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2008.
- King, G. E., Thirty years of gas shale fracturing: what have we learned?. In SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2010.
- Britt, L. K. and Schoeffler, J., The geomechanics of a shale play: what makes a shale prospective. In SPE Eastern Regional Meeting, Society of Petroleum Engineers, 2009.
- Rickman, R. et al., A practical use of shale petrophysics for stimulation design optimization: All shale plays are not clones of the Barnett Shale. In SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2008.
- Wang, G.-C., Jiang, R.-Z. and Xu, J.-C., Analysis and advice for shale gas development. Complex Hydrocarbon Res., 2012, 5(2), 10–14.
- Xie, H.-P. et al., Unconventional theories and strategies for fracturing treatments of shale gas strata. J. Sichuan Univ. (Engineering science edition), 2012, 44(6), 1–6.
- Du, C., Study on theoretics of hydraulic fracturing in coal bed and applicatons. Ph D thesis, China University of Mining and Technology, 2008.
- Bingxiang, H., Research on theory and application of hydraulic fracture weakening for coal-rock mass. J. China Coal Soc., 2010, 35(10), 1765–1766.
- Beugelsdijk, L. J. L., De Pater, C. J. and Sato, K., Experimental hydraulic fracture propagation in a multi-fractured medium. In SPE Asia Pacific Conference on Integrated Modelling for Asset Management, Society of Petroleum Engineers, 2000.
- Zhou, J. et al., Experiment of propagation mechanism of hydraulic fracture in multi-fracture reservoir. J. Univ. Petrol. China (edition of natural science), 2008, 32(4), 51–54.
- Casas, L. A. et al., Laboratory hydraulic fracturing test on a rock with artificial discontinuities. In SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2006.
- Damani, A. et al., Mapping of hydraulic fractures under triaxial stress conditions in laboratory experiments using acoustic emissions. In SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2012.
- Zhou, J., Jin, Y. and Chen, M., Experimental investigation of hydraulic fracturing in random naturally fractured blocks. Int. J. Rock Mech. Min. Sci., 2010, 47(7), 1193–1199.
- Zhou, J. et al., Analysis of fracture propagation behavior and fracture geometry using a tri-axial fracturing system in naturally fractured reservoirs. Int. J. Rock Mech. Min. Sci., 2008, 45(7), 1143–1152.
- Sarout, J. et al., Shale dynamic properties and anisotropy under triaxial loading: Experimental and theoretical investigations. Phys. Chem. Earth, Parts A/B/C, 2007, 32(8), 896–906.
- Heng, S. et al., Experimental research on anisotropic properties of shale. Rock and Soil Mech., 2015, 36(3), 609–616.
- Heng, S. et al., Experimental and theoretical study of the anisotropic properties of shale. Int. J. Rock Mech. Mining Sci., 2015, 74, 58–68.
- Weng, X. et al., Modelling of hydraulic-fracture-network propagation in a naturally fractured formation. SPE Prod. Oper., 2011, 26(04), 368–380.
- Xu, Z. et al., Physical simulation of hydraulic fracturing of shale gas reservoir. Petroleum Drilling Techniques, 2013, 41(2), 70–74.
- Yushi, Z. et al., Experimental investigation into hydraulic fracture network propagation in gas shales using CT scanning technology. Rock Mech. Rock Eng., 2016, 49(1), 33–45.
- Guo, T. et al., Experimental study of hydraulic fracturing for shale by stimulated reservoir volume. Fuel, 2014, 128, 373–380.
- Zhang, S. et al., Fracture propagation mechanism experiment of hydraulic fracturing in natural shale. Acta Petrolei Sin., 2014, 35(3), 496–503, 518.
- Zhang, Y. et al., A study of hydraulic fracture propagation for shale fracturing. Sci. Technol. Eng., 2015, 15(5), 11–16.
- Guo, Y. et al., Research on hydraulic fracturing physical simulation of shale and fracture characterization methods. Chin. J. Rock Mech. Eng., 2014, 33(1), 52–59.
- Heng, S. et al., Experimental study on hydraulic fracture geometry of shale. Chin. J. Geotechn. Eng., 2013, 36(7), 1243–1251.
- Hou, B. et al., Fracturing mechanism of shale gas reservoir with variable pump rates. Chin. J. Geotech. Eng., 2014, 36(11), 2149–2152.
- Rickman, R. et al., A practical use of shale petrophysics for stimulation design optimization: All shale plays are not clones of the Barnett Shale. In SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2008.
- Goktan, R. M. and Yilmaz, N. G., A new methodology for the analysis of the relationship between rock brittleness index and drag pick cutting efficiency. J. South Afr. Inst. Min. Metallur., 2005, 105(10), 727.
- Yoshinaka, R. et al., Practical determination of mechanical design parameters of intact rock considering scale effect. Eng. Geol., 2008, 96(3), 173–186.
- Illman, W. A., Strong field evidence of directional permeability scale effect in fractured rock. J. Hydrol., 2006, 319(1), 227–236.
- Zhang, G. Q. and Fan, T., A high-stress tri-axial cell with pore pressure for measuring rock properties and simulating hydraulic fracturing. Measurement, 2014, 49, 236–245.