RU95108720A - Method for development of oil deposit - Google Patents

Abstract

FIELD: oil production industry. SUBSTANCE: this can be used in development of oil deposit at later stage. According to method, oil is taken through producing wells. Burning of oil bed is initiated in injection wells and air is injected. After taking-out of 75-80% of available reserve, pumped into injection wells is accompanying Devonian water with density of 1.06-1.09 g/cm3 at average yearly volume of outputs from producing wells at down-hole pressure in producing wells not below 0.6 of initial bed pressure. Injection of accompanying Devonian water is effected in cyclic duty: during 5-7 months - injection, another 5-7 months - stoppage. In injection, additional cyclic mode is carried out: 10-20 days - injection, another 10-20 days - stoppage. EFFECT: high efficiency.

Claims (1)

The invention relates to the oil industry and may find application in the development of an oil field at a late stage. In a method for developing an oil reservoir, oil is taken through production wells. In injection wells, an oil reservoir is ignited and air is pumped. After extracting 75 - 80% of the recoverable reserves, the Devonian associated water is pumped into the injection wells with a density of 1.06 - 1.09 g / cm ³ in the average annual production rate of production wells at bottomhole pressures in production wells of at least 0.6 of the initial reservoir pressure. Associated Devonian water is pumped in a cyclic mode: 5–7 months, injection - 5–7 months, a stop; while pumping, an additional cyclic mode is performed: 10–20 days, pumping — 10–20 days, a stop.