Effect of reservoir and production system integration on field production strategy selection

Abstract

In petroleum engineering studies, the integration of reservoir and production system models can improve production forecasts. As the integration increases computation time, it is important to assess when this integration is necessary and how to choose a suitable coupling methodology. This work analyzes the influence of this integration, for a petroleum field in the development phase, evaluating the effects on the production strategy parameters. We tested a benchmark model based on an offshore field in Brazil so we could validate the solution in a reference known model. This work continues the research of Von Hohendorff Filho and Schiozer (2014, 2017) and aims to improve step 11 of the 12-step reservoir development and management methodology by Schiozer et al. (2015). The solution is tested in a reference model. Using the integrated production system and reservoir models from step 11 of the methodology, we re-optimize the production strategy of a standalone production development, while evaluating net present value as the objective function. We adapted an assisted workflow to include the optimization of new variables, such as pipe diameters of the well systems and gathering systems, platform positions, and artificial lift application, and compared these with the production strategy obtained from the same benchmark in a standalone approach. Comparing the integrated standalone and integrated production strategies, we observed important changes that indicate the need to integrate reservoir and production models. The optimized integrated systems resulted in significantly increased net present values, maintaining the same oil recovery factor while requiring lower initial investment. We implemented the best integrated production strategy and the integrated production strategy derived from the standalone case in the reference model which, in this case, represents a real field (emulating a real situation). Integration in the implementation step impacted the production forecast more than the optimization step, demonstrating the benefits of integrating reservoir and production systems to increase project robustness.

Influence of well management in the development of multiple reservoir sharing production facilities

“…We describe the impact of the well management method in a field development project using a consolidated methodology for production strategy optimization [9,17].…”

“…We expanded the assisted optimization workflow [17] to clarify the methodology. After optimization processes without integration [9], we define a step for production system integration with reservoir.…”

“…Approach 1 uses fixed apportionment of platform production and injection capacities, common to integrate multiple reservoirs in separate simulations [14,15,17]. We apply static percentages for production and injection capacities for each reservoir separately.…”

“…Several optimization methods have been proposed for waterflooding optimization [25,26] and gas lift allocation [21,27]. We used sequential optimization method with integration [17] to evaluate the best project variables, as stated. We considered the stop criterion in sequential optimization method when has not increased in the objective function during a complete cycle.…”

Optimization of Energy Consumption in Oil Fields Using Data Analysis

“…Oil production is contingent upon reservoir pressure during the initial production phase. In instances where reservoir pressure is insufficient, artificial lift methods are implemented to facilitate oil extraction [1][2][3][4]. Artificial lift methods are designed to provide the necessary energy for oil extraction.…”