Design and appraisal of horizontal wells deep well lifting technology

Sucker rod lift is one of the most popular artificial lift methods in oil industry. Currently, it has been widely applied in vertical wells as well as in horizontal wells. This paper presents several new types of sucker rod lifting technology for deep horizontal wells in low permeability reservoir, which include differential sucker rod pump and pump lifting technique for highly deviated wells. And the key techniques, such as the pump design in highly deviated well and the centralization of sucker rod, are introduced in detail. Indoor experiments and field application indicated that the differential sucker rod pumping and the new type of pumping technology in highly deviated wells had the characteristics of high pump efficiency and good reliability, which could meet the pumping requirements in deep horizontal wells in Daqing peripheral oilfield.