After Fracturing Of Horizontal Wells And Extended Reach Wells, Production Forecasting And Applied Research

In the last few year,with the progressive development of horizontal well and extended reach well technology, fracturing technical application to horizontal well and extended reach well has becomen a pop research area.Extended reach well and horizontal well fracturing technology is a milestone in the field development area,it will bing much improvement of the production for a great many oil wells that are considered to have no exploitability.But in order to ascertain the economical feasibility for the fracturing to extended reach well and horizontal well,we need a responsible approach to count the production afer plunging into development and fracturing. Contraposing a few particular case of the extended reach well and horizontal well,this article has some research on the production forecast after consulting large numbers of literature and make some economy optimization research on the fracture parameters that impact on the production through setting up economic model .At the same time, this article use nodal system analysis to make system analysis study for the production performance of the fractured well.This article adopt black-oil model to simulate the production of the fracturing well.at the same time.the Beggs - Bills way is used to calculating the outflow performance of extended reach wells and horizontal well, through the research of this artical we got the research production and conclusion as follows:1. Because of the specialness of the extended reach wells and horizontal well,we set up the three-dimensional oil-water flow model and difference model.After establishing the grid system ,the linear system of equations is solved by the way of iteration.2. The economic models of the fracture number,fracture conductivity and the fracture length are established in this artical because of the effct on the production after fracturing.The fracture economical optimization research is proceeded in combination with the production of the fracturing well3. In this artical,the outflow performance of extended reach wells and horizontal wells is setted up by Beggs-Bills means,and the inflow performance of the pay zone can get by numerical simulation.In the end.the nodal system analysis is proceeded considering the effect of the fracture parameter on the production system.4. After establishing the models, Visual Basic 6.0 is used in this artical to develope the calculation procedure of the production forecast and the nodal system analysis of extended reach wells and horizontal wells. With the calculation to the field case and contrasting the calculating results with the fild production data and the result that calculated by the analytical means ,we have gotten some conclusion that have the practical meaning.