关键词:  爆燃压裂, 水平井, 近水, 低渗, 控水增油

Abstract:  In order to overcome the problems met during deflagration fracturing in horizontal wells near water zone, the pressure buildup process and the fracture extension models are modified based on powder combustion model, liquid column movement model, etc. The interval to be fractured is selected according to the physical conditions of reservoir a of Lufeng 13 - 1 oilfield and the distance to the water layer. To have a delayed low peak pressure fracturing program, the powders with different burning speeds and sizes are analyzed, the peak values and fracture lengths calculated. And large size HTPB propellant powder is selected to control the fracture length and avoid bottom water communication. The field test shows that two horizontal wells at Lufeng oil field are close to water layers, the fracturing has reached the goal to control water and increase oil rate, and communication with the bottom water 3 - 6 meters along the perforation direction avoided. The oil production increased by 6000 m3 . So proper interval, delayed large size powder and reasonable powder quantity are the keys for deflagration fracturing in near water horizontal wells. This will be a reference for the development of similar oil fields at home and abroad.

Key words:  , deflagration fracturing, horizontal wells, near water, low permeability, control water and increase oil rate