SciencEngineering in Oil Fields Development: Application of Analytical Methods.

Tuesday, 10 March 2015 Read 6995 times
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One of the important stages of oil fields development design is the selection of well placement and its completion methods. The challenge of this task is due to decision-making process performance with the lack of information on reservoir structure and substantial uncertainty in the input data. In this context, the most sustainable decision can be reached by using relatively simple models and methods. The traditional 3D simulation is often inapplicable due to the need in calculation of vast number of development system options provided for analysis of uncertainties impact in the input parameters. Simplified models with relatively simple analytical decisions in basis relieve the case.

In this paper authors will present a developed technical and economic model for decision-making to select a development system, in addition will cover several examples of its application to oil fields. Simplified description of formation geology on the basis of averaged reservoir properties is provided in this model. Calculation of well production within the model is conducted by streamlines approach. The application of this approach for oil displacement simulation for producing wells allows to reduce task capacity from two- or three-dimensional to one-dimensional which will speed up the task's solution. Wells with random method of completion are represented in the model as a set of simple elements - point sources. Given the known location of all sources the constant pressure field is calculated, through which a stream tube system is constructed. One-dimensional task of two-phase filtration, which can be described by Buckley-Leverett equation, is solving along each stream tube. Summing of oil and water production for all streamlines gives the dynamics on well performance in the development strategy. In its turn the economic performance, calculated by means of economic model and under the production and injection dynamics, is used for optimization of development strategy.

About author

Alexey Pustovskikh - Head of Comprehensive Development Design Division at LLC Gazpromneft NTC (OJSC Gazprom neft). Alexey graduated from Novosibirsk State University, major in Physics. In 2011, he completed a further higher education course earning a qualification “Oil and Gas Company Manager” in Gubkin Russian Oil and Gas University.

In 2006-2012, he worked in LLC RN-UfaNIPIneft where his responsibilities included implementing new technology in artificial lift and field development design.

In 2012-2013, he worked as Head of New Asset Evaluation Department in LLC BashNIPIneft.

In July 2013, he joined LLC Gazpromneft NTC as Head of Comprehensive Development Design Division.






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