Quick pre-stack seismic inversion to predict reservoir properties at a gas and condensate field in Nam Con Son basin

  • Son Phan Dang Thai
  • Vien Phan Tien
  • Nam Tran Hong
  • Quan Ngo Anh
  • Hai Hoang Minh

Tóm tắt

This paper introduces a new approach to quickly predict reservoir quality along a particular directional well-path, to justify the optimisation process for well location. The workflow employs a simulated annealing algorithm to convert available seismic data at well locations into some petrophysical properties that indicate reservoir quality such as porosity and water saturation. The inversion process is constrained by several seismic traces that are previously extracted along the well-path, which help significantly reduce the calculation cost. The results were successfully applied in two development wells drilled into gas bearing reservoirs in Nam Con Son basin, offshore Vietnam.

Các tài liệu tham khảo

1. Albert Tarantola. Inversion of seismic reflection data in the acoustic approximation. Geophysics. 1984; 49(8): p. 1259 - 1266.
2. Brian Russell, Dan Hampson. A comparison of post-stack seismic inversion methods. SEG Technical Program Expanded Abstracts. 1991: p. 876 - 878.
3. Mrinal K.Sen, Paul L.Stoffa. Global optimization methods in geophysical inversion. Elsevier Science Publications, Netherlands. 1995.
4. Daniel P.Hampson, Brian H.Russell, Brad Bankhead. Simultaneous inversion of pre-stack seismic data. SEG Technical Program Expanded Abstracts. 2005: p. 1633 - 1637.
5. David M.Dolberg, Jan Helgesen, Tore Hakon Hanssen, Ingrid Magnus, Girish Saigal, Bengt K.Pedersen. Porosity prediction from seismic inversion, Lavrans field, Halten Terrace, Norway. The Leading Edge. 2000: p. 392 - 399.
6. Joseph Christian Adam Frank Valenti. Porosity prediction from seismic data using multi-attribute transformations, N Sand, Auger field, Gulf of Mexico. The Pennsylvania State University, College of Earth and Mineral Sciences. 2009.
7. Josimar Silva, Gorka Garcia, Viviane Farroco, Elita de Abreu, Andrea Damasceno. Joint estimation of reservoir saturation and porosity from seismic inversion using stochastic rock physics simulation and Bayesian inversion. 12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil. 15 - 18 August, 2011: p. 1327 - 1330.
8. Han N.Tran, Guy Peterson, Nam H.Tran, Lam Q.Nguyen, Hai M.Hoang. Well location optimization using seismic AVO analysis in turbidite reservoir gas sands, Block 05-2, Nam Con Son basin, off shore Vietnam. PVEP Technical Forum “Challenging Reservoirs in Vietnam”, Ho Chi Minh city. 29 - 30 May, 2013.
9. M.R.J.Wyllie, A.R.Gregory, L.W.Gardner. Elastic wave velocities in heterogeneous and porous media. Geophysics. 1956; 21(1): p. 41 - 70.
10. Ralph Wiggins, Geogre S.Kenny, Carrol D.McClure. A method for determining and displaying the shear-velocity reflectivities of a geologic formation. European Patent Application 0113944. 1983.
11. William L.Goffe, Gary D.Ferrier, John Rogers. Global optimization of statistical functions with simulated annealing. Journal of Econometrics. 1994; 60(1, 2): p. 65 - 99.
12. James L.Simmons, Milo M.Backus. Waveform¬based AVO inversion and AVO prediction-error: Geophysics. 1996; 61(6): p. 1575 - 1588.
13. Steven R.Rutherford, Robert H.Williams. Amplitude-versus-off set variations in gas sands. Geophysics. 1989; 54(6): p. 680 - 688.
14. Ravi P.Srivastava, Mrinal K.Sen. Stochastic inversion of pre-stack seismic data using fractal-based initial models. Geophysics. 2010; 75(3): p. 47 - 59.
Đã đăng
2017-10-31
How to Cite
Phan Dang Thai, S., Phan Tien , V., Tran Hong, N., Ngo Anh , Q., & Hoang Minh , H. (2017). Quick pre-stack seismic inversion to predict reservoir properties at a gas and condensate field in Nam Con Son basin . Tạp Chí Dầu Khí, 10, 40 - 44. https://doi.org/10.25073/petrovietnam journal.v10i0.232
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