METHOD FOR WATERED OIL POOL DEVELOPMENT Russian patent published in 2008 - IPC E21B43/16 

FIELD: oil production, particularly watered oil pool development with water encroachment source detection.

SUBSTANCE: method involves performing objective and differentiated problem well selection with the use of advanced watering (excessive water) map and incomplete initial oil reserve recovery map; analyzing surface change of well watering dynamics modes over pool area; obtaining first representation of watering source distribution with the use of above dynamics mode change analysis, which is carried out with the use of map presenting accumulated water-oil ratio at fixed watering value moment. More accurate oil well watering source determination is carried out with the use of correlation analysis involving wide range of parameters, namely water and oil production dynamics, produced fluid watering dynamics with fluid production dynamics, dynamics of liquid injection via injection well, energy state of reservoir and intensity of hydrodynamic reservoir treatment. Measure program is elaborated and realized from obtained data. The program includes water isolation in problem production wells with taking into consideration of said well location relatively injection ones and works to be carried out in injection wells for flooding efficiency increase.

EFFECT: increased efficiency of watered oil pool development due to increased accuracy and reliability of problem well diagnosing and water encroachment source detection.

7 cl, 1 ex, 11 dwg