OPTIMUM PARAMETERS FOR OIL FIELD DEVELOPMENT OF VARIOUS FACTORS ARPS
The project of the development of oilfield is linked with some economical tasks solved at the stages of preparation of the project of field development. The stages of the project preparation can be presented in the next way: conceptual assessment; base of investments; preparation of project documentation; detailed design development. The transition from the initial stages to the final process is characterized by the accumulation of information about place that accompanied the transition from the simplified and stochastic models to more detailed and deterministic. At all stages of project preparation the most common two types of problems are associated with oil economies: task of evaluating the effectiveness of projects for management decisions; tasks economically based choice of technological solutions in the design process. The first type of tasks (management accounting) does not present significant difficulties, sufficiently unified and based on classical theories, performance evaluation, differences can arise only depending on the practices adopted in specific companies. The aim is to assess the project in the system performance criteria common to the entire company, which is interested in this assessment. In turn, the problem of the choice of technological solutions requires the creation of computational tools, techniques and specific approaches, the purpose is to obtain a decision as to maximize the quality of a given function. The task of choosing the best technological solutions precedes the problem of estimating efficiency for administrative purposes. Tasks associated with the justification optimum solution in its meaning can be grouped as follows. The first group consists of the problem of finding the optimal technological solutions such as: determining the optimal rate of development of the field; determining the optimal scheme surface facilities; determine the optimal length of the horizontal wellbore. The second group consists of the problem of determining the parameters of the field, providing a minimum return: determine the minimum viable amount of recoverable reserves; determine the minimum cost-effective production rate of the production well; definition of the tax regime of the PSA to ensure the effective development of the field. The second group is inextricably linked with the tasks of the first group, because depending on the technological solutions adopted profitability estimated project can take many values. The allegation that these parameters (for example, recoverable reserves, or rate of flow) provides the specific amount of profitability valid only if finding the appropriate optimal technological solutions. The third group is the problem of constructing an asset rating: building rating of drilling; planning of geotechnical activities; building of rating of exploration program. Due to the high degree of uncertainty in the input parameters in the early stages of project evaluation oil (conceptual evaluation, geological and economic assessment) the separate issue is the solution to all the above objectives of risk: determine the necessary volume of exploration activities; choice of minimum initial arrangement if possible further expansion of capacity. As you can see, the problem of optimizing the system design is in all of these problems, thus is fundamental to the economy of oil and gas.