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research-article

Well placement optimization with cat swarm optimization algorithm under oilfield development constraints

[+] Author and Article Information
Hongwei Chen

School of Petroleum Engineering, China University of Petroleum (East China) Qingdao 266580, Shandong, China
chenhwupc@163.com

Qihong Feng

School of Petroleum Engineering, China University of Petroleum (East China) Qingdao 266580, Shandong, China
fengqihong.upc@gmail.com

Xianmin Zhang

School of Petroleum Engineering, China University of Petroleum (East China) Qingdao 266580, Shandong, China
zhangxmupc@163.com

Sen Wang

School of Petroleum Engineering, China University of Petroleum (East China) Qingdao 266580, Shandong, China
wangsen607616@163.com

Wensheng Zhou

China National Offshore Oil Corporation Research Institute Beijing 100027, China
zhouwsupc@163.com

Fan Liu

China National Offshore Oil Corporation Research Institute Beijing 100027, China
gengyhupc@163.com

1Corresponding author.

ASME doi:10.1115/1.4040754 History: Received February 13, 2018; Revised June 21, 2018

Abstract

Proper well placement can improve the oil recovery and economic benefits during oilfield development. Due to the nonlinear and complex properties of well placement optimization, an effective optimization algorithm is required. In this paper, cat swarm optimization (CSO) algorithm is applied to optimize well placement for maximum net present value (NPV). CSO algorithm, a heuristic algorithm that mimics the behavior of a swarm of cats, has characteristics of flexibility, fast convergence, and high robustness. Oilfield development constraints are taken into account during well placement optimization process. Rejection method, repair method, static penalization method, dynamic penalization method and adapt penalization method are respectively applied to handle well placement constraints and then the optimal constraint handling method is obtained. Besides, we compare the CSO algorithm optimization performance with genetic algorithm (GA) and differential evolution (DE) algorithm. With the selected constraint handling method, CSO, GA, and DE algorithms are applied to solve well placement optimization problem for a 2D conceptual model and a 3D semi-synthetic reservoir. Results demonstrate that CSO algorithm outperforms GA and DE algorithm. The proposed CSO algorithm can effectively solve the constrained well placement optimization problem with adapt penalization method.

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