METHOD FOR THE MINE DEVELOPMENT OF THE HIGH-TYPE OIL FIELD AND THE DEVICE FOR A CLOSED OIL COLLECTION SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC E21B43/24 E21C41/24 

FIELD: oil industry.

SUBSTANCE: group of inventions relates to oil industry. Method of mine development of the high-viscosity oil field includes the excavation of mine workings, sinking of superficial injection and underground production wells, equipment with optical sensors for monitoring the temperature of underground wells with the installation of sensors at the mouths of underground wells, injection of steam into surface injection wells, stopping steam injection with increasing temperature and oil recovery from underground wells. Moreover, at the mouth of the underground production wells, a closed oil collection system is installed, accumulation of oil in the storage tanks of the closed oil collection system is carried out and the signal about the achievement of the established upper limit of the oil level in the storage tank is transmitted via fiber optic cable to the computer, processing information and issuing a command to open the locking devices installed on the drain connections of the storage tanks, discharge of oil into the pipeline of the closed oil collection system and further transportation of it by gravity flow through the pipeline of the closed oil collection system to the sump of the local storage device, transmission of the signal about reaching the established lower limit of the oil level in the storage tank via fiber optic cable to the computer, processing of the information and issuing a command to close the shut-off device and stopping oil discharge from the storage tanks to the pipeline of the closed oil collection system. Then, the automatic calculation of the production well capacity is carried out based on the difference in the arrival in time of the signals from the oil level indicators taking into account the pre-entered length data, inclination angle, the diameter of the producing well casing, and the volume of the storage capacity, followed by making a decision on the feasibility of repair or on continuing the well operation. Structure of the closed oil collection system is a storage vessel made in the form of vertical vessels connected to production wells by means of an inclined nozzle, the lower end of which is located below the level of the producing well, herewith the storage container is provided with auxiliary glass, the upper end of which is located above the inlet to the storage tank of the inclined oil supply pipe from the producing well, the auxiliary glass is connected by a discharge pipe with a locking device mounted on it to the oil collection line, while in the upper conical part of the storage tank a breather valve with a bypass line connected to the upper non-filled oil volume of the pipeline of the closed oil collection system is installed, at the level of the upper end of the auxiliary glass, a low oil level indicator is installed, and an upper level indicator is installed in the upper part of the tank.

EFFECT: technical effect: to provide a cumulative operating mode of producing wells, to prevent the breakthrough of steam from the producing well, to increase the rate of extraction and the recovery factor of oil, to reduce heat losses, to lower the temperature in mines, to measure the production rate and to decide whether to continue operating or to repair a well.

5 cl, 4 dwg