Some Possibilities of Increasing the Completeness of Oil and Gas Recovery

Abstract

The purpose of this work is to focus the attention of specialists in the field of development and exploration of oil and gas fields on the possibilities of increasing the completeness of oil and gas recovery by taking into account natural phenomena that occur in pools, using existing methods development. Failure to take into account these natural phenomena causes low completeness of oil and gas recovery, as well as unjustified costs in the development of pools. As a result of 60 years of research by a large group of specialists in various fields of knowledge, the presence of a number of natural phenomena in oil and gas pools was established, and taking into account them, the completeness of gas, condensate and oil recovery from a number of pools was increased. The following main natural phenomena have been identified: 1. Multi-scale block structure of all pools and the absence of hydrodynamic connection between different parts of each pool within the framework of Darcy’s law. 2. Changes in the filtration properties of the pool during development. 3. Influence of fractionation of hydrocarbons in pools on the properties of produced and residual oil during water flooding in sediments with different reservoir properties. The following proposals are substantiated: • Additions to the complex of exploration works; • Some ways to increase the completeness of oil and gas recovery; • The results of the industrial use of a comprehensive study of conventional and unconventional oil and gas pools.