An optimization method for hydraulic fracturing and fracture layout of newly drilled horizontal wells in water injection development well pattern

Abstract

The invention relates to a hydraulic fracturing fracture optimization method for newly drilled horizontal wells in the water injection development well network. The method of the present invention is based on making full use of the remaining oil in old oilfields while avoiding communication with waterlines and old wells. It can not only effectively and to a greater extent produce remaining oil and obtain more industrial crude oil; At the same time, the energy supplement of the injected water is used to maximize the single well production and reduce the decline rate; it can also avoid communication with the old wells under the original well pattern conditions, which interferes with the old wells’ influence on crude oil production. Contribute to improve the effect of the overall adjustment and development of the oilfield.

Description

An optimization method for hydraulic fracturing and fracture layout of newly drilled horizontal wells in water injection development well pattern technical field The present invention relates to the field of oil production engineering, in particular to the hydraulic fracturing of a newly drilled horizontal well in a water injection development well pattern Fabric seam optimization method. Background technique Low pressure (pressure coefficient is about 0.7) represented by Changqing Oilfield, low permeability (permeability <10×10 ‑3 um 2 )Oil It is very difficult to produce crude oil, and the well pattern in the water injection development area with water wells as the center and oil production distributed in the periphery is mainly formed. right The fracturing of the oil production well forms the oil flow channel with high conductivity, and the water well is flooded by water injection, so as to obtain the maximum connection between the oil well and the water...