Field development design
The purpose of the design is to optimize the development of the field (oil / gas / gas condensate), which allows to increase the recovery coefficient of oil / gas / gas condensate while reducing costs. At the same time, with any changes in the field development system as a whole, it is necessary to take into account the mutual influence of all elements of the production system, since the optimization of one of them can lead to a change in the input conditions and deoptimization of the work of the other. Thus, the model used for the development project should predict the behavior of the entire system when its parameters change over time, for example, changing the methods of impact on the reservoir, changing the design of wells or surface arrangement.
The field development design consists of six main blocks:
Drilling and completion
The result of the work of each block of the development project is the collection and processing of data and parameters transmitted to the next block for continuing calculations and estimates, or for making decisions on the project.
Models of the reservoir, wells and surface infrastructure are created, calculated and optimized simultaneously, allowing you to manage the development as a whole and obtain maximum technical and economic indicators. This approach makes it possible to optimize the development of the entire field as a whole, taking into account the mutual influence of the reservoir, production facilities and ground facilities on each other.
Field development projects combine all key areas related to the development of the field (geology, development, drilling and pumping, oil and gas production, development, economics, ecology, risk analysis) in order to effectively plan the processes of additional exploration and development of the field.
To predict the development of the field, a detailed hydrodynamic model is built, which allows taking into account the physical processes in the reservoir and various subtle effects associated with water and gas breakthroughs into the well. Hydrodynamic simulators are not the only tool for engineering calculations. Simple models can be used to solve a wide range of problems in oil engineering.
Based on the tasks facing the design, the following integrated models are most often used:
The balance model of the field
Integrated model based on proxy models of reservoir, wells, development and economy
Integrated model based on detailed models of the reservoir, wells, development and economy
Regardless of the complexity/detail of the models used, there are several stages of building a development project:
Geological description of the deposit, deposits
Forecast of the distribution of hydrocarbon reserves (oil, associated and natural gas, gas condensate)
Formation of an additional exploration program
Selection of the development system (type and density of the grid, finishing technology, method of increasing oil recovery)
Placement of project wells based on the reservoir model
Determination of possible zones of the location of communication corridors, placement of bushes and areal objects on the basis of a topological map of the area
Calculation of production profiles (oil, liquid, associated and natural gas, gas condensate) and injection
Placement of parameters of key objects of surface arrangement (DNS, CNS) and communication corridors in the model of surface arrangement
Division of the field into blocks with the linking of blocks to key areal objects (DNS, KNS)
Determination of the scheme of external transport and conditions for the sale of products
Refinement of the field / block model and calculation of technological indicators
Calculation of the project economy as a whole / for individual blocks
At KMG Engineering LLP, the design of field development is carried out in full in the above-mentioned stages and models, including physical and chemical studies of its own laboratory Center.