METHOD FOR USING A CAPACITIVE-RESISTIVE MODEL TO DETERMINE THE INFLUENCING INJECTION WELLS IN MULTILAYER FIELDS Russian patent published in 2023 - IPC E21B43/20 E21B47/10 

FIELD: oil industry.

SUBSTANCE: invention relates to the assessment of the mutual influence of wells, specifically to methods for extracting oil from wells at several horizons by water displacement. The way to use the capacitive-resistive model to determine the influencing injection wells in multi-layer fields is to identify the elements of waterflooding in the field, conduct fluid withdrawal and water injection, estimating the average daily volumes. Based on the obtained data, a capacitive-resistive model is created and the capacitive-resistive model is adapted to the measured actual production and injection data. The waterflood element is selected using the Voronoi grid, and after the waterflooding elements are distinguished in the field, the connectivity of wells within each waterflooding element is estimated. After creating a capacitive-resistive model, the calculation period of the capacitive-resistive model is selected based on the last change in the reservoir pressure maintenance system and the wells involved in the calculation are filtered. After adapting the capacitive-resistive model to the measured actual production and injection data, a ranked list of influencing injection wells is determined and recommendations are made for optimizing operating constraints.

EFFECT: increased accuracy of determining the mutual influence of wells, as well as obtaining maximum oil production from the field as a whole.

1 cl, 6 dwg