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MULTI-WELL SAND PRODUCTION PREDICTION STUDY TO SUPPORT FIELD DEVELOPMENT PLAN, LOWER ACACUS FORMATION, AREA 47, GHADAMIS BASIN
M. S. Gheddida, C. Sorge, M. El Mabrouk, A. A. Fituri, A. V. Der Berken
Libya
France
DOI: 10.68482/prj.2019.24.004 · Published Dec 2019 · Section: Exploration · Pages: 37–48
Abstract
This work presents the synthesis of an extensive study on sand production prediction conducted on six structures in block 2, Lower Acacus Formation, Area-47 in Ghadamis Basin, Libya. These structures, upon declaring their commerciality, were identified for North Hamada Field Development. Thirteen wells (exploratory and appraisals), have been drilled and tested in these structures. Some of these wells have exhibited sand production phenomena during their initial production tests. A sand production prediction study was performed to investigate and quantify the magnitude of the problem, suggesting proper sand control remedy and optimum completion parameters for cased and open hole scenarios.Geomechanical Modeling and Wellbore Stability (WBS) Analysis have been performed simultaneously for each well, to assess mechanical properties and stresses that have been used for sanding analysis. A petrophysical and rock physics analysis of log data from all wells allowed to integrate available measurements by means of multi-well workflows utilizing, 1D-geomechanic model, rock physics and completion modules. All analyses confirmed the occurrence of sanding in some critical sections at different reservoir pressure depletion regimes. Predicted sanding tendency on existing wells, was in good agreement, with observations made from DST’s.These results have been used to start planning for the upcoming operation phase. They also constitute the base for the development of an integrated 3D geomechanic reservoir model enabling large scale analysis of the regional sand production phenomena.
Keywords
Area-47, Mechanical earth modeling, Sand production prediction
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