RU2011131962A

RU2011131962A - METHOD FOR HYDRAULIC TREATMENT OF COAL LAYER

Info

Publication number: RU2011131962A
Application number: RU2011131962/03A
Authority: RU
Inventors: Александр Владимирович Шипулин
Original assignee: Александр Владимирович Шипулин
Priority date: 2011-07-21
Filing date: 2011-07-21
Publication date: 2013-01-27
Also published as: RU2477799C1

Abstract

Способ гидравлической обработки угольного пласта, включающий подачу жидкости через скважину в пласт посредством нагнетательного насоса, гидроимпульсное воздействие жидкости на пласт, сброс устьевого давления жидкости до атмосферного с последующим ее истечением из скважины, одновременное с гидроимпульсным воздействием жидкости на пласт накопление гидравлической энергии потока, создаваемого нагнетательным насосом, в гидроаккумуляторе с последующей подачей аккумулированной жидкости в скважину и с периодическим повторением режимов истечения жидкости из скважины и нагнетания ее в пласт, отличающийся тем, что при нагнетании жидкости в пласт максимально быстро увеличивают давление на устье скважины и подачей аккумулированной жидкости поддерживают это давление в течение времени, необходимого для формирования трещин пласта, затем максимально быстро снижают устьевое давление до атмосферного и осуществляют излив скважинной жидкости, размеры и конфигурацию формируемых трещин определяют величиной и длительностью приложения давления.A method of hydraulically treating a coal seam, including supplying fluid through a borehole to a seam by means of an injection pump, hydroimpulse exposure of a fluid to a formation, discharge of wellhead fluid pressure to atmospheric followed by its outflow from a well, simultaneous with hydroimpulse exposure of a fluid to a formation, accumulation of hydraulic energy of a flow generated by injection pump, in the accumulator, followed by the supply of accumulated fluid into the well and with periodic repetition of modes fluid outflow from the well and its injection into the formation, characterized in that when injecting the liquid into the formation, the pressure at the wellhead is increased as quickly as possible and the pressure is maintained by supplying the accumulated liquid for the time necessary to form the formation cracks, then the wellhead pressure is reduced as quickly as possible to atmospheric and carry out the outflow of the borehole fluid, the size and configuration of the formed cracks is determined by the magnitude and duration of pressure application.

Claims

A method of hydraulically treating a coal seam, including supplying fluid through a borehole to a seam by means of an injection pump, hydroimpulse exposure of a fluid to a formation, discharge of wellhead fluid pressure to atmospheric followed by its outflow from a well, simultaneous with hydroimpulse exposure of a fluid to a formation, accumulation of hydraulic energy of a flow generated by injection pump, in the accumulator, followed by the supply of accumulated fluid into the well and with periodic repetition of modes fluid outflow from the well and its injection into the formation, characterized in that when injecting the liquid into the formation, the pressure at the wellhead is increased as quickly as possible and the pressure is maintained by supplying the accumulated liquid for the time necessary to form the formation cracks, then the wellhead pressure is reduced as quickly as possible to atmospheric and carry out the outflow of the borehole fluid, the size and configuration of the formed cracks is determined by the magnitude and duration of pressure application.