Prospecting with the density cube

Koughnet, Roderick W. Van; Kelly, M. C.; Lindsay, R. O.; Skidmore, C. M.

doi:10.1190/1.1817224

Cited by 4 publications

(2 citation statements)

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“…The vertical stress is generally estimated by integrating logged density over depth and multiplying by the acceleration due to gravity. As density can be estimated from seismic data (e.g., Van Koughnet et al, 2003), the vertical stress can also be estimated integrating the density estimated from seismic data. This means that the anisotropic in-situ stress state of the rock and its elastic moduli and brittleness can be estimated between wells through the use of modern 3D seismic data.…”

Section: Methodsmentioning

confidence: 99%

Estimation of stress and geomechanical properties using 3D seismic data

Gray¹,

Anderson²,

Logel³

et al. 2012

First Break

126

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Principal stresses, that is vertical, maximum horizontal and minimum horizontal stresses, and elastic moduli related to rock brittleness, like Young's modulus and Poisson's ratio, can be estimated from wide-angle, wide-azimuth seismic data. This is established using a small 3D seismic survey over the Colorado shale gas play of Alberta, Canada. It is shown that this information can be used to optimize the placement and direction of horizontal wells and hydraulic fracture stimulations.

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Section: Methodsmentioning

confidence: 99%

Estimation of stress and geomechanical properties using 3D seismic data

Gray¹,

Anderson²,

Logel³

et al. 2012

First Break

126

View full text Add to dashboard Cite

show abstract

“…Van Koughnet et al (2003) published a series of examples from the Gulf Coast showing that density reflectivity can be practically solved for and used in an exploration environment. The technique requires data with good signal to noise, large angles and offsets.…”

Section: Introductionmentioning

confidence: 99%

Three term AVO waveform inversion

Downton

Lines

2004

SEG Technical Program Expanded Abstracts 2004

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Density reflectivity is a desirable AVO attribute sought by the explorationist since it has the potential to say something about the fluid saturation. However accurate density reflectivity estimates are difficult to obtain due to the ill-conditioned nature of the inverse problem. A small amount of noise will lead to large errors in the estimates. To improve the stability of the inversion, large angles and offsets are required but these bring their own problems. One set of related problems is NMO stretch and offset dependent tuning. This paper develops and demonstrates an AVO waveform inversion that incorporates into its forward model these factors allowing for accurate estimates even in their presence. Well constraints and various regularization strategies are employed to further enhance the reliability of the solution.

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Density from wave impedance by seismic inversion: A new approach for gravity aided modeling

Chatterjee

Yalamanchili

2017

SEG Technical Program Expanded Abstracts 2017

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Prospecting with the density cube

Cited by 4 publications

References 0 publications

Estimation of stress and geomechanical properties using 3D seismic data

Estimation of stress and geomechanical properties using 3D seismic data

Three term AVO waveform inversion

Density from wave impedance by seismic inversion: A new approach for gravity aided modeling

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