Feasibility analysis of fracture traversing layers through horizontal wells in Daniudi tight low permeability gas field

In Daniudi gas field,there developed 7 gas layers horizontally,but the mature horizontal fracturing technology at present can only be satisfied with single layer development.How to achieve two layers producing at the same time becomes the difficulty while keeping the present technology unchanged.Through numerical simulation,the influential factors analysis of artificial fracture traversing layers with horizontal wells has been carried out and the traversing limit of the geological factors have been made clear.Through optimization of construction parameters,the optimized parameters suitable for traversing layers of wells have been determined.Field test showed that during the fracturing process of horizontal wells,the artificial fractures can realize the traversing layers and achieve the purpose of improving single well production and reducing development cost.