METHOD FOR DETERMINING TYPE OF CARBONATE COLLECTOR ON BASIS OF DATA FROM SPECIALIZED WELL RESEARCH Russian patent published in 2005 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes examination of exploring, product or force well, drilled in oil or gas saturated bed, in two stages. At first stage water is forced and water loss is measured. At second stage bed fluid is extracted and debits are measured on basis of oil or gas and water, and at both stages pit-face pressure is measured. On basis of measured parameters water level in production is determined, and volumes of extracted and forced water. Type of carbonate collector is determined on basis of dynamics of change of pit pressure at first and second research stages and change of relation of collected volume of extracted water to total volume of forced water during second stage, in time. For better identification of purely cracked and porous collector types, sampling and laboratory research of productive interval core is additionally performed, and results are taken in consideration during identification of carbonate collector type.

EFFECT: higher reliability.

2 cl, 6 dwg, 1 ex