A passive seismic survey over a gas field: Analysis of low-frequency anomalies

Geophysics - Tập 74 Số 2 - Trang O29-O40 - 2009
Erik H. Saenger1,2,3,4, Stefan M. Schmalholz1,2,3,4, Marc-André Lambert1,2,3,4, Tung Thanh Nguyen1,2,3,4, Arnaud Torres1,2,3,4, Sabrina Metzger1,2,3,4, Robert M. Habiger1,2,3,4, T Müller1,2,3,4, S. Rentsch1,2,3,4, Efraín Méndez-Hernández1,2,3,4
1ETH Zurich, Geological Institute, Zurich, Switzerland, and Spectraseis AG, Zurich, Switzerland. .
2Formerly Freie Universität Berlin, Berlin, Germany; presently WesternGeco London Technology Centre, Gatwick, U. K. .
3Pemex Exploratión y Producción, Villahermosa, Mexico. .
4Spectraseis AG, Zurich, Switzerland. .

Tóm tắt

Passive seismic low-frequency (from approximately [Formula: see text]) data have been acquired at several locations around the world. Spectra calculated from these data, acquired over fields with known hydrocarbon accumulations, show common spectral anomalies. Verification of whether these anomalies are common to only a few, many, or all hydrocarbon reservoirs can be provided only if more and detailed results are reported. An extensive survey was carried out above a tight gas reservoir and an adjacent exploration area in Mexico. Data from several hundred stations with three-component broadband seismometers distributed over approximately [Formula: see text] were used for the analysis. Severalhydrocarbon reservoir-related microtremor attributes were calculated, and mapped attributes were compared with known gas intervals, with good agreement. Wells drilled after the survey confirm a predicted high hydrocarbon potential in the exploration area. A preliminary model was developed to explain the source mechanism of those microtremors. Poroelastic effects caused by wave-induced fluid flow and oscillations of different fluid phases are significant processes in the low-frequency range that can modify the omnipresent seismic background spectrum. These processes only occur in partially saturated rocks. We assume that hydrocarbon reservoirs are partially saturated, whereas the surrounding rocks are fully saturated. Our real data observations are consistent with this conceptual model.

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Tài liệu tham khảo

Akrawi, K., and G. Bloch, 2006, Application of passive seismic (IPDS) surveys in Arabian Peninsula: EAGE Workshop on Passive Seismic: Exploration and Monitoring Applications, Dubai, United Arab Emirates, A28.

Ali M. Y., 2007, First Break, 25, 71

10.1007/s00024-004-2522-5

10.1007/s00024-004-2520-7

10.1190/1.2209748

Bard, P.Y., 1999, Microtremor measurements: A tool for site effect estimation? Balkema, 1251–1279.

10.1190/1.2353803

10.1029/2004JB003408

Berteussen, K. A. , M. Y. A. Ali, J. S. Small, and B. Barkat, 2008, A low frequency, passive seismic experiment over a carbonate reservoir in Abu Dhabi: Wavefront and particle motion study: 70th Annual International Meeting, EAGE, Extended Abstracts, B046.

Birialtsev, E. V. , I. N. Plotnikova, I. R. Khabibulin, and N. Y. Shabalin, 2006, The analysis of microseisms spectrum at prospecting of oil reservoir on Republic Tatarstan: 68th International Conference and Exhibition, EAGE, Extended Abstracts.

10.1016/j.earscirev.2006.07.004

10.1016/S0267-7261(98)00014-1

10.1190/1.1559038

10.1111/j.1365-246X.2006.02919.x

10.1016/S0377-0273(03)00251-8

10.1046/j.0956-540x.2001.01406.x

10.1111/j.1365-246X.2007.03625.x

10.1111/j.1365-246X.2008.04001.x

10.1023/A:1009788904007

10.1193/1.1941252

10.1190/1.2202652

Graf R., 2007, World Oil, 228, 47

Hanssen P., 2008, First Break, 26, 111, 10.3997/1365-2397.26.1288.28412

10.1190/1.2356258

10.1190/1.1444784

10.1016/j.cnsns.2007.06.013

Holzner R., 2005, First Break, 23, 41, 10.3997/1365-2397.23.5.26560

Ibs-von Seht M., 1999, Bulletin of the Seismological Society of America, 89, 250, 10.1785/BSSA0890010250

Jurkevics A., 1988, Bulletin of the Seismological Society of America, 78, 1725

Konno K., 1998, Bulletin of the Seismological Society of America, 88, 228, 10.1785/BSSA0880010228

Kouznetsov, O. L. , I. A. Chirkin, V. V. Dryagin, S. L. Aroutunov, and B. Y. Meltchouk, 2005, Induced seismoacoustic emission: Basis for new technologies of fluid identification: 67th Annual International Meeting, EAGE, Extended Abstracts, G048.

Lambert, M., S. M. Schmalholz, Y. Y. Podladchikov, and E. H. Saenger, 2007, Low frequency anomalies in spectral ratios of single station microtremor measurements: Observations across an oil and gas field in Austria: 77th Annual International Meeting, SEG, Expanded Abstracts, 1352–1356.

Lambert, M., B. Steiner, S. M. Schmalholz, R. Holzner, and E. H. Saenger, 2006, Soft soil amplification of ambient seismic noise — Field measurements and numerical modeling of H/V ratios: EAGE Workshop on Passive Seismic, Extended Abstracts, A10.

Lambert, M.A., S. M. Schmalholz, E. H. Saenger, and B. Steiner, 2008, Low-frequency microtremor anomalies at an oil and gas field in Voits-dorf, Austria: Geophysical Prospecting, doi:10.1111/j.13652478.2008.00734.x.

10.1007/s00024-003-2376-2

Mavko, G., T. Mukerji, and J. Dvorkin, 1998, The rock physics handbook: Cambridge University Press.

10.1016/S0267-7261(00)00049-X

Nguyen, T. T. , E. H. Saenger, S. M. Schmalholz, and B. Artman, 2008, Earthquake triggered modifications of microtremor signals above and nearby a hydrocarbon reservoir in Voitsdorf, Austria: 70th Annual International Meeting, EAGE, Extended Abstracts, P025.

10.1016/j.tecto.2004.03.024

10.3133/ofr93322

Pujol, J., 2003, Elastic wave propagation and generation in seismology: Cambridge University Press.

10.1190/1.3026620

Rached, G. R. , 2006, Surface passive seismic in Kuwait: EAGE Workshop on Passive Seismic: Exploration and Monitoring Applications, A27.

10.1190/1.2401139

10.1007/BF00566693

10.1007/BF00126610

SESAME, 2004, Guidelines for the implementation of the H/V spectral ratio technique on ambient vibration: Measurements, processing and interpretation: SESAME European research project, http://sesame-fp5.obs.ujf-grenoble.fr/SES_Reports.htm, accessed 14 January 2009.

10.1126/science.1108339

10.1029/2007GL032097

Suntsov, A. E. , S. L. Aroutunov, A. M. Mekhnin, and B. Y. Meltchouk, 2006, Passive infra-frequency microseismic technology: Experience and problems of practical use: EAGE Workshop on Passive Seismic: Exploration and Monitoring Applications, A25.

10.1016/0267-7261(95)00038-0

Turuntaev, S. B. , V. N. Burchik, and D. S. Turuntaev, 2006, Microseismic background study for gas field exploration: 68th International Conference and Exhibition, EAGE, Extended Abstracts, P245.

van Mastrigt P., and A. Al-Dulaijan, 2008, Seismic spectroscopy using amplified 3-C geophones: 70th International Conference and Exhibition, EAGE, Extended Abstracts, B047.

10.1190/1.2805768

Thông tin
Thông tin xuất bản

Geophysics

Tập 74 Số 2

O29-O40

Thông tin tác giả