@Article{fdmp.2022.019788,
AUTHOR = {Chenyang Shi, Fankun Meng, Hongyou Zhang, HuiJiang Chang, Xun Zhong, Jie Gong, Fengling Li},
TITLE = {A Model for the Connectivity of Horizontal Wells in Water-Flooding Oil Reservoirs},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {18},
YEAR = {2022},
NUMBER = {5},
PAGES = {1441--1468},
URL = {http://www.techscience.com/fdmp/v18n5/47961},
ISSN = {1555-2578},
ABSTRACT = {As current calculation models for inter-well connectivity in oilfields can only account for vertical wells, an
updated model is elaborated here that can predict the future production performance and evaluate the connectivity of horizontal wells (or horizontal and vertical wells). In this model, the injection-production system of the
considered reservoir is simplified and represented with many connected units. Moreover, the horizontal well is
modeled with multiple connected wells without considering the pressure loss in the horizontal direction. With
this approach, the production performance for both injection and production wells can be obtained by calculating
the bottom-hole flowing pressure and oil/water saturation according to the material balance equation and a
saturation front-tracking equation. Some effort is also provided to optimize (to fit known historical production
performances) the two characteristic problem parameters, namely, the interwell conductivity and connected
volume by means of a SPSA gradient-free algorithm. In order to verify the validity of the model, considering a
heterogenous reservoir, three conceptual examples are constructed, where the number ratio between injection
and production wells are 1/4, 4/1 and 4/5, respectively. It is shown that there is a high consistency between simulation results and field data.},
DOI = {10.32604/fdmp.2022.019788}
}