METHOD OF DEVELOPMENT OF A POORLY EXPLORED OIL FIELD Russian patent published in 2018 - IPC E21B43/16 E21B43/30 G01V1/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas production industry and can be used in development of a poorly explored oil field. According to the method the field is drilled with a rare grid of wells. Products are taken via producing wells. Working fluid is pumped via injection wells. When developing a reservoir-vault, it is initially drilled with one inclined-directed production well in the dome or dock zone with a displacement of the face from the mouth of not more than 200 m. Detailed seismic surveys are carried out using the method of non-longitudinal vertical seismic profiling with a profile divorce of 50° in a circle. Specify the predictive structural layout of the reservoir on the roof of the reservoir from drilling and seismic surveys. Due to this confirmability of the design data on the hypsometric elevation of the roof of the reservoir and, as a consequence, the thickness of the reservoir is increased. Exclude drilling of empty and watered wells. Existing grid of production wells is compacted by drilling an additional number of small-diameter wells according to the refined structural plan. Bore wells to drill through the sealing grid for thicknesses of 4 m and more with a distance between the wells of 150 m. At thickness of less than 4 m with well spacing of 300 m the oil recovery factor is increased.

EFFECT: increase of development efficiency of the field.

1 cl, 1 dwg