Lailin Li^1*, Haibo Zhao¹, Xuehui Han²

Show more
¹ Oil Exploration and Development Research Institute of Daqing, Daqing, China.
² China University of Petroleum (East China), Qingdao, China.
Show less

Abstract: Under the condition of simulated formation temperature and pressure, the compression and shear wave velocity of the tuffaceous conglomerates and rock-fragment sandstones of the reservoirs in K1t, k1n group of Cretaceous system in Tanan are measured. The effects of lithology, mineral content, density, porosity, shale content, and water saturation on the acoustic velocity of the athrogenic rock are studied. Within the limits of our observation, some rules are found: (1) the velocity of the fine tuffaceous conglomerates is remarkably greater than that of the tuffaceous rock-fragment sandstones with good physical property; (2) the compression velocity increases with fragment content, and decreases with quartz and feldspar content in the mud; (3) the compression velocity increases with density, especially, in tuffaceous rock-fragment sandstones, the velocity keeps a good relation with density in form of power function; (4) compression and shear wave velocity decreases with porosity and shale content, velocity of the tuffaceous rock-fragment sandstones keeps a good relation with porosity and shale content in form of negative linear function, but effects of shale content is only 1/5 to 1/10 of that of the porosity, hence can be neglected; (5) with porosity increases, compression wave velocity is relatively sensitive to fluid alternation, and the rang in which velocity varies keeps positive correlation with porosity. The result provides a foundation for the research of seismic and logging data evaluation approaches in athrogenic rock reservoirs, Haita basin.

Keywords: Tuffaceous Rock-Fragment Sandstones, Acoustic Velocity, Porosity, Shale Content, Density, Water Saturation

Cite this paper: Li, L. , Zhao, H. and Han, X. (2014) Rock Physical Experimental Research in Tanan Volcanic Rock Reservoir. Journal of Applied Mathematics and Physics, 2, 284-295. doi: 10.4236/jamp.2014.26034.

References

[1]   Wu, Y., Chen, J.L. and Zhang, Y. (2009) Relationships between Different Types of Structural Zones and Hydrocarbons in Hai-laer-Tamtsag Basin. Journal of Daqing Petroleum Institute, 33, 31-35. http://en.cnki.com.cn/Article_en/CJFDTotal-DQSY200903010.htm

[2]   Wyllie, M.R.J., Gregory, A.R. and Gardner, L.W. (1956) Elastic Wave Velocities in Heterogeneous and Porous Media. GEOPHYSICS, 41-70. http://dx.doi.org/10.1190/1.1438217

[3]   Simmons, G. (1964) Velocity of Compressional Waves in Various Minerals at Pressure to 10 Kbars. Journal of Geophysical Research, 69, 1117-1121. http://dx.doi.org//10.1029/JZ069i006p01117/pdf

[4]   Ma, Z.G. and Xie, J.G. (2005) Relationship among Compressional Wave, Shear Wave Velocities and Density of Rocks. Progress in Geophysics (in Chinese), 20, 905-910. http://dx.doi.org/10.1190/1.1441933

[5]   Nur, A. (1992) Critical Porosity and the Seismic Velocity in Rocks. EOS Trans Am Geophys Union, 73, 43-66. http://dx.doi.org/10.1190/1.1437977

[6]   Han, D., Nur, A. and Morgan, D. (1986) Effects of Porosity and Clay Content on Acoustic Properties of Sandstones and Unconsolidated Sediments. GEOPHYSICS, 51, 2093-2107. http://dx.doi.org/10.1190/1.1442062

[7]   Biot, M.A. (1956) Theory of Propagation of Elastic Waves in A Fluid Saturated Porous Solid, I: Low Frequency Range, and II: Higher-frequency Range. Journal of the Acoustical Society of America, 168-196. http://dx.doi.org/10.1121/1.1908241

[8]   Gassmann, F. (1951) Elastic Waves through a Packing of Spheres. GEOPHYSICS, 16, 673-685. http://dx.doi.org/10.1190/1.1437718

[9]   Mavko, G. and Jizba, D. (1991) Estimating Grain-Scale Fluid Effects on Velocity Dispersion in Rock. GEOPHYSICS, 56, 1940-1949. http://dx.doi.org/10.1190/1.1443005

[10]   Gardner, G.H.F., Gardner, L.W. and Gregory, A.R. (1974) Formation Velocity and Density-The Diagnostic Basics for Stratigraphic Traps. GEOPHYSICS, 39, 770-780. http://dx.doi.org/10.1190/1.1440465

[11]   Gan, L.D. (2002) 4D Seismic and Its Application to the Monitoring of Water Flooding Reservoir. Ph.D. Thesis, China University of Geosciences (in Chinese), Beijing.

[12]   Ma, Z.G. and Wu, X.Y. (2006) Effects of Effective Pressure on Wave Velocities on Rocks. Progress in Exploration Geophsics (in Chinese), 29, 183-186. http://www.cnki.com.cn/Article/CJFDTotal-KTDQ200603006.htm

[13]   Mavko, G., Mukerji, T. and Dvorkin, J. (1998) The Rock Physics Handbook: Tools for Seismic Analysis in Porous Media. Cambridge University Press, 208-210

[14]   Sch?n, J.H. (1996) Physical Properties of Rock: Fundamentals and Principles of Petrophysics. Ultrasonic, 311-317. http://dx.doi.org/10.1029/97EO00363

[15]   Khatchikian, A. (1982) Log Evaluation of Oil-Bearing Igneous Rocks. 23th SPWLA Annual Logging Symposium Transactions, Texas, 6-9 July, AA. https://www.onepetro.org/conference-paper/SPWLA-1982-AA

[16]   Wang, B.Z. (2008) Seismic Rock Physics and Its Applied Research. Ph.D. Thesis, Chengdu University of Science and Technology (in Chinese), Chengdu.

[17]   Shi, G. and Yang, D.Q. (2001) The Regression Analysis Study on Velocity and Porosity and Clay Content of Rocks. Acta Scicentiarum Naturalum Universitis Pekinesis (in Chinese), 37, 379-384. http://dx.doi.org/10.3321/j.issn:0479-8023.2001.03.015

[18]   Klimentos, T. (1991) The Effects of Porosity-Permeability-Clay Content on the Velocity of Compressional Waves. GEOPHYSICS, 56, 1930-1939. http://dx.doi.org/10.1190/1.1443004

[19]   Dvorkin, J., Mavko, G. and Nur, A. (1995) Squirt Flow in Fully Saturated Rocks. GEOPHYSICS, 60, 97-107. http://dx.doi.org/10.1190/1.1443004

[20]   Han, D., Nur, A. and Morgan, D. (1986) Effects of Porosity and Clay Content on Wave Velocities in Sandstones. GEOPHYSICS, 51, 2093-2107. http://dx.doi.org/10.1190/1.1442062