The main objective of this paper is to present a thermo-hydrodynamic 3D modeling approach for interpreting temperature surveys in horizontal wells with multiple fractures. The scope of the study includes predicting detailed homogeneous flow patterns in the porous matrix, fractures, and flow geometry inside smart completions. The model aims to provide 3D distributions of pressure and temperature along the horizontal wellbore, enabling quantitative flow analysis in liner, annulus, sandface, and each fracture.
The 3D thermo-hydrodynamic modeling approach utilizes a grid covering the wellbore and the reservoir domain, considering the entire production/injection history. Advanced thermal and hydrodynamic equations are employed to describe physical processes in the reservoir, wellbore, and fractures. The scientific approach enables the model to quantify flow in various configurations, such as radial flow around the wellbore, semi-spherical flow at the toe and heel, and linear flow towards fractures, leading to improved accuracy and capabilities for reservoir production control.
The 3D thermo-hydrodynamic modeling approach has been successfully applied in horizontal injectors and producers. A "blind" comparison to industry-standard PLT measurements and other temperature modeling products evaluated accuracy, thresholds, advantages, and limitations. The model matched PLT well in wellbore flow rates. In challenging cases, it depicted reliable reservoir flow profiles with complex flow paths, including annular flows, flows behind the casing, and swell packer failures. The model's quantitative assessment capability presents new opportunities for predicting diverse flow patterns in horizontal wells, advancing reservoir and fracture performance understanding.
The 3D thermo-hydrodynamic modeling approach is of paramount importance in the oil and gas industry. By predicting flow patterns in horizontal wells with multiple fractures, the model offers valuable reservoir management insights. It surpasses conventional logging techniques, addressing limitations in detecting crossflow, high thresholds, and challenges with high viscosity fluids.
The model's novelty lies in its comprehensive methodology, simulating 3D pressure and temperature distributions along the wellbore. Quantitative flow analysis in liner, annulus, sandface, and each fracture revolutionizes the industry. Successfully applied in horizontal wells with multi-stage hydraulic fractures, it enhances reservoir performance control and production efficiency.
