Abstract: In order to improve the status that the existing development pattern and methods can not improve the situation of high water cut , high production decline rate , low ratio of total oil produced to OOIP , low recovery factor after 20 years of development of Gaoqianbeiqu oilfield , this paper demonstrates the reasonable development technical policy of horizontal wells for various types of potential remaining oil , such as the reservoir thickness , the well position , the well length , and so on , and analyzes the application regulation technique of horizontal wells , on the basis of the classification and evaluation of potentials.The application acquired good effect and optimized the techniques of horizontal well in reservoirs with edge and bottom water in secondary development , which may guide the secondary development of similar reservoirs.