Fracture Parameters Optimization of Horizontal Well Volume Fracturing in Ma18 Block

Authors

  • Huzhen Wang , Zhiming Zhao , Jian Zhu , Changjun Diao , Yuntong Yang

Abstract

Considering the characteristics of stress-sensitive tight reservoirs in the Ma 18 block of Aihu Oilfield, a numerical simulation method based on the finite element method is established. The stress-sensitive effects on production is treated by dynamic permeability and dynamic starting pressure gradient. Based on the horizontal well data and the sweet spot classification criteria, the reservoirs are divided into three types. Optimized the fracture parameters of the three types of oil layers and the results showed that: Under the condition of 400m well spacing, the optimal fracture half-length in type I oil layer is about 120m, the optimal fracture half-length in type II oil layer is about 150m, and the optimal fracture half-length in type III oil layer is about 180m; Artificial fractures in Block Ma 18 do not have the conditions to form complex fracture networks, so plane fractures are the mainstay, and the optimal cluster spacing is about 30m; Under the condition of 1000m horizontal section and 2 clusters in one stage, the optimal number of stages for type I oil layer is 12, type II oil layer is 13, and type III oil layer is 14

Published

2020-04-30

Issue

Section

Articles