Nonstationary sparsity-constrained seismic deconvolution

Sun, Xuan; Sam, Zandong Sun; Xie, Hui-Wen

doi:10.1007/s11770-014-0459-8

Cited by 3 publications

(1 citation statement)

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“…Previous studies have shown that post-stack inversion has been commonly used for characterization of the top of caves, which has achieved certain results; however, research concerning the application of P-impedance elastic parameters to characterize caves is limited, and there are not many applications of other elastic parameters [11,12]. Previous researchers indicated that AVO (amplitude variation with offset) attribute analysis technology can be used to identify fluids in carbonate reservoirs, and the fluid prediction accuracy reached 83.3%, indicating that the elastic parameters information of pre-stack seismic data is more abundant, and it is a requirement for carrying out pre-stack seismic inversion research.…”

Section: Introductionmentioning

confidence: 99%

Applicability Analysis of Pre-Stack Inversion in Carbonate Karst Reservoir

Wang

Liu

2022

Energies

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Although pre-stack inversion has been carried out on reservoir prediction, few studies have focused on the application of pre-stack for seismic inversion in fractured-cavity carbonate reservoirs. In carbonate rock, complicated combinations and fluid predictions in karst caves are remain unclear. Post-stack methods are commonly used to predict the position, size, and fillings of caves, but pre-stack inversion is seldom applied in carbonate karst reservoirs. This paper proposes a pre-stack inversion method for forward modeling data and oil survey seismic data, using both points to indicate the application of pre-stack inversion in karst caves. Considering influence of cave size, depth, and filler on prediction, three sets of models (different caves volume; different fillings velocity of caves; complicated combination of caves) are employed and inverted by pre-stack inversion. We analyze the pre-stack results to depict Ordovician oil bearing and characterize caves. Geological model parameters came from actual data of the Tahe oilfield, and seismic data were synthesized from geological models based on full-wave equation forward simulation. Moreover, a case study of pre-stack inversion from the Tahe area was employed. The study shows that, from both the forward modeling and the oil seismic data points of view, pre-stack inversion is applicable to carbonate karst reservoirs.

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Section: Introductionmentioning

confidence: 99%