Advanced Well Spacing System Application in the Development of Oil and Gas Fields

Selecting the spacing density of wells is very important issue of rational development of oil and gas fields. Wells spacing significantly affects to the key indicators of the field development such as the rate of liquid and gas recovery from the reservoir, completeness of oil sweep out from the producing formation, the hydrocarbons ultimate recovery factor, reservoir producing life and a number of other indicators of development. In view of applications in oilfield practice, in most cases technologically imperfect well patterns, particularly, in productive beds with geologically and physically complicated conditions (reservoir rock heterogeneity, low filtration properties of layers, high oil viscosity, low energy manifestations during reservoir development, and so on) leads to formation of “stagnant” oil and less drained areas undeveloped in the primary oil recovery method. The present scientific work is an attempt to prove that the right choice of wells spacing system can be excluded “stagnant” oil zone, left undrained zones during the primary field development method.