METHOD FOR PREPARATION OF HYDROCARBON DEPOSIT FOR DEVELOPMENT Russian patent published in 2016 - IPC E21B43/00 G01V1/00 

FIELD: mining.

SUBSTANCE: invention relates to development of hydrocarbon deposits and can be used for preparation of potential of developed deposit to exploration and production drilling. Method is characterised by performing seismic exploration of section of rocks in area of potential insufficiently studied deposit. Determining intervals of its production deposits and intervals of possible accumulation of natural gas-gas pockets in upper part of section. Determining areas of exploratory and producing wells. Drilling of pilot-priority well using blowout preventer, recovery of core and investigations of borehole environment to specify intervals possible accumulation of natural gas. Opening pilot well of said intervals, extracting gas therefrom with reduction of formation pressure to a value of not more than hydrostatic pressure. Constructing prospecting and exploration and production wells on productive deposit potential deposit, including with possible development of said wells in upper part of section of rock intervals with selected gas. Pilot well, solving problem of gas production, is provided for use as observation for control of gas flows from lower horizons.

EFFECT: technical result is prevention of accidents when drilling prospect and/or production wells in area of potential deposit due to opening of high-pressure natural gas in upper part of section.

1 cl, 1 ex