| 摘要 |
FIELD: oil-and-gas industry.SUBSTANCE: filtration-capacitive characteristics of productive seam are defined. Dependence of seam pressure of injection and seam pressure on said characteristics is determined. Intervals of optimum pressure on injection and seam pressures are defined. Working fluid is injected via injection wells to extract products via production wells at filtration conditions corresponding to optimum injection pressures. Note here that that injection wells are equipped with individual flow rate meters. Production wells are equipped with pump equipment load meters. Transducer data fed in telemetry system in real time including is achieved and averaged to daily magnitudes. Deposit 3D sections with at least 6 wells within one or several productive seams are outlined on the deposit map with coordinates of well boreholes. For every injection well, the data are measured once in two hours and averaged once a day. Every 40 days flow rate variation graph is plotted for injection well subject to well operation time. For every production well, the data are measured once in two hours and averaged once a day. Every 40 days flow rate variation graph is plotted for pimp equipment load variation subject to well operation time. Graphs are compared by superimposition for injection and production wells. Conformity of amplitude heights in one time interval, spacing of flow rate peaks and production well operation time is defined. In case said peaks comply completely, decision about direct influence of injection well on production well is made. In the case of complete discrepancy conclusion on influence in time period is made. In the case of complete discrepancy conclusion on influence in time period is made. At complete absence of peaks conclusion is made on absence of influence of injection wells on production well. Interference factor is calculated that represents the factor of similarity of well signal of 1 to 0 is calculated depending on spacing and filtration-capacitive characteristics of the seam. Said factors are ranged to select production wells with factors exceeding 0.5. These wells are used to analyse the watering dynamics. At high dynamics over 25% in 0.5 year injection is terminated or partially limited to 50%. Water isolation or flow deflection is used to up the oil yield. At stable operation, production wells are operated. At similarity factor smaller than 0.1 conclusion is made on absence of response and insignificant interference of the wells. Note here that extra research of injection well is carried out to define wasteful injections in casing string-borehole annuity or faulty production well tightness.EFFECT: simplified analysis, lower material and labour costs, decreased watering, higher oil yield.7 dwg |
