METHOD OF PULSE HYDRAULIC FRACTURING IMPLEMENTATION Russian patent published in 2014 - IPC E21B43/267 

FIELD: mining.

SUBSTANCE: method includes creation of pressure differential between wellbore area and well cavity by means of creation of pressure periodic pulses in wellbore area. Preliminary estimated is time of displacement of fluid mass movement wave from the mouth to specified site of horizontal well and length of extension and healing of formation cracks in horizontal well with two mouths. Filling valve of the first mouth is opened relative to the second mouth with time delay for provision of fluid mass movement waves from both mouths to specified site of wellbore area simultaneously. In horizontal well with one mouth formed are two consequent fluid mass movement waves, time delay between the first and the second waves is chosen based on provision of simultaneous supply of the first and the second fluid mass movement waves repulsed from sump to the specified site of horizontal well.

EFFECT: obtaining high-pressure pulses on any specified site of horizontal well with hydraulic impact effect.

2 dwg