Nature and results of a method for monitoring temperature changes in developed horizons in the Uzen' field

Nature and results of a method for monitoring temperature changes in developed horizons in the Uzen' field V.A. Lutkov and Yu.P. Gattenberger The working of oil fields by inject­ sumps. At first, most attention was ing water with a temperature different devoted to wells near the injection from that in the productive horizons wells, but as the flooded area increased, produces changes in the thermal regime we studied more distant wells; now sur­ that may affect the properties of the veys are being conducted over the entire oil and water in the structure and dis­ field. rupt the initial conditions of percola­ tion and inflow into the wells. Improved The temperatures are measured by operation of these fields and the high remote thermometers. For this purpose, oil recovery rates require careful moni­ VNII uses a frequency thermometer con­ toring of thermal processes below the sisting of an improved thermometric unit from a Potok-5 downhole instrument. Its surface. The Uzen' field, where tempera­ sensitivity is 400 Hz/deg, and its reso­ ture changes have been observed in detail lution is ±0.002° C. The thermometers for many years, is instructive in this are calibrated in a piezometric well, investigation. and are used to establish the natural heat content of the field. The measure­ First, we had to determine the ini­ ments, carried out with different ther­ tial temperature range in the oil field, mometers at different times, provided which served as the basis for all sub­ sufficient high-quality results. The sequent analyses of...