Prediction of Oil&Gas saturation and/or pressure variation with time‐lapse seismic elastic parameter inversion

2009 ◽  
Author(s):  
Xiudi Jiang ◽  
Zhenyu Zhu ◽  
Liang Song
Keyword(s):  
Time Lapse ◽  
Elastic Parameter ◽  
Pressure Variation ◽  
Gas Saturation ◽  
Parameter Inversion ◽  
Oil Gas

Numerical Simulation of Array Induction Logs Time-Lapse Responses and Formation Resistivity Profile Reconstruction with 5-Parameter Inversion

2012 ◽  
Vol 588-589 ◽  
pp. 1359-1363 ◽  
Author(s):  
Yi Ren Fan ◽  
Hu Li ◽  
Yun Yun Hu ◽  
Qing Tao Sun
Keyword(s):  
Water Layer ◽  
Time Lapse ◽  
Quantitative Information ◽  
Fluid Type ◽  
Parameter Inversion ◽  
Formation Resistivity ◽  
Profile Reconstruction ◽  
Oil Gas ◽  
Induction Logs ◽  
Bearing Layer

In order to improve reservoir fluid recognition, sensitivities of array induction response to different invasion properties in both oil-bearing layer and water layer are analyzed. A numerical algorithm is adopted to simulate time-lapse response of array induction logs during mud invasion and signal processing of the array induction log is developed. Features of array induction responses during mud invasion were researched. A “five-parameter model” (r1, r2, Rxo, R1/2, Rt) which can match a variety of invasion conditions is approached and carried out suing a fast invasion method. Therefore, the identification of fluid type can be realized effectively by inversion of array induction log combined with time-lapse responses of array induction log. It is demonstrated that the inverted resistivity presents a typical non-monotonic variation in oil-bearing layer and a monotonic variation in water layer, which agrees well with the actual invasion property. It provides quantitative information for the discrimination of oil/gas or water zone.

Pre-stack elastic parameter inversion of ray parameters

2019 ◽  
Vol 162 ◽  
pp. 13-21
Author(s):  
Liu Ling ◽  
Liu Lihui ◽  
Wo Yujin ◽  
Sun Wei ◽  
Zhang Lingling ◽  
...  
Keyword(s):  
Elastic Parameter ◽  
Parameter Inversion
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