Research on the design scheme of electric cylinder-driven system for drilling pumps

Abstract:

The traditional power transmission of drilling pumps mostly adopts crank-linkage mechanisms or hydraulic transmission methods， which have problems such as heavy structure， significant pressure and flow pulsation， insufficient working volume for construction operations， and low efficiency. Based on the technical requirements for drilling pumps with large flow rates and high efficiency in the development of deep and ultra-deep well as well as unconventional oil and gas resources， this article discusses a new type of electric cylinder-driven system for drilling pumps. This system consists of four major modules： power， transmission， execution， and auxiliary. It forms an integrated power transmission system of "power+control+auxiliary" that works collaboratively， transforming the driving method of drilling pumps from the traditional crank-linkage mechanism to electric cylinder drive. The proposal of this system can improve the transmission efficiency of drilling pumps， reduce output pressure pulsation， save equipment maintenance costs， and precisely adapt to the working characteristics of high-load， large-flow， and continuous operations of drilling pumps at oilfield operation sites. It provides a new technical path for the development of drilling pumps towards efficiency， intelligence， and environmental friendliness.