Rock property prediction for integrated exploration and development, Vaca Muerta formation, Neuquén Basin, Argentina

Convers, Carlos; Hanitzsch, C.; Curia, David

doi:10.3997/1365-2397.35.7.89730

Cited by 6 publications

(3 citation statements)

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“…When building a 3D geomechanical model, the first step is to create the grid in which the computation of the constraints will be carried out [31]. The grid is guided by the geological model of the region and must contain the overlying layers in addition to the reservoir's layers ( [6,32]). As the acoustic impedance volume was obtained from the seismic inversion results, a simple calculation was used to deduce the volume of the acoustic velocities, as shown in Figure 5a.…”

Section: Digital Grid Creationmentioning

confidence: 99%

Section: Digital Grid Creationmentioning

confidence: 99%

“…The proposed approach involved the creation of a mud density cube for each cell in the model and the definition of a limit of rupture (shear failure gradient), a limit of mud loss related to an induced fracture (fracture gradient), and a rupture limit for breakdown [42]. The size of the mud density window depended on the difference between the limits of these different gradients [32]. The stability of the wellbore depended on the relative orientation of the main stresses and the trajectory of the well.…”

Section: Determination Of the Mud Density Windowmentioning

confidence: 99%

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3D Geomechanical Model Construction for Wellbore Stability Analysis in Algerian Southeastern Petroleum Field

et al. 2022

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The main objective of this research work was the wellbore stability evaluation of oil and gas wells based on a 3D geomechanical model, which as constructed using seismic inversion in a southeastern Algerian petroleum field. The seismic inversion model was obtained by using an iterative method and Aki and Richards approximation. Since the correlation between the inversion model and the log data was high at the wells, the reservoir was efficiently characterized and its lithology carefully discriminated in order to build a reliable 3D geomechanical model. The latter was further used to suggest the drilling mud weight window for the ongoing wells (well 5) and to examine the stability of four previously drilled wells. The main contribution of this study is providing a 3D geomechanical model that allows the optimization of drilling mud weight parameters so that a wellbore’s stability is guaranteed, on the one hand, and, on the other hand, so that the reservoir damage brought about by excessive surfactant use can be prevented. Indeed, the mud parameters are not just important for the drilling process’s effectiveness but also for logging operations. Since the tools have limited investigation diameters, with excessive use of surfactant, the invaded zone can become larger than the tools’ investigation diameter, which makes their logs unreliable. Hence, the 3D geomechanical model presented here is highly recommendable for the proposition of new wells, entailing less exploration uncertainty and more controllable productivity.

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Section: Digital Grid Creationmentioning

confidence: 99%