METHOD FOR IDENTIFICATION OF WELL WITH VARIABLE MASS FLOW RATE AT WELL PAD Russian patent published in 2014 - IPC E21B47/10 G01F1/74 

FIELD: oil and gas industry.

SUBSTANCE: method lies in continuous monitoring of the total mass flow rate M_li and volumetric gas discharge Q_gi and calculation of the coefficient $$K_i=\frac{\Delta M_{li}}{\Delta Q_{gi}}$$ , where ΔM_li and ΔQ_gi respectively for the difference of the previous (stored) and current average numerical values of the total expense parameters of the well pad $${\overline{M}}_{li}$$ and $${\overline{Q}}_{gi}.$$ When the numerical value K_i deviates from the range of the preset values, the total flow mass rate of the liquid M_li(n-1) and the total flow mass rate of free gas Q_gi(n-1) for (n-1) wells, where n is the total number of wells in the well pad, the flow mass rate of the liquid (water-oil mixture) M_li=M_li-M_(n-1), the flow mass rate of free gas Q_gi=Q_gi-Q_gi(n-1) and $$K_i=\frac{M_{li}}{Q_{gi}}$$ coefficient is calculated for each well. Thereafter the numerical values of K_i are compared for each well with the current numerical value K_i, and the well with a variable flow mass rate in the well pad is identified against the minimum difference between the numerical value K_i of one well in the well pad and the numerical value of K_i coefficient.

EFFECT: identification of the well with the variable flow mass rate of the liquid in the well pad directly in the process of the well flow rates measurement.

2 cl, 1 dwg