Linear electric motor for an oilfield pump

Abstract

An oilfield pump employing a linear electric motor. The linear electric motor replaces a conventional crankshaft or hydraulic techniques for driving a plunger of the pump. This may reduce the number of equipment parts and amount of maintenance expenses associated with the operation of oilfield pumps. Furthermore, the use of a linear electric motor may also increase the precision and control over the fluid delivery provided by the pump assembly.

Description

BACKGROUND[0001]Embodiments described relate to oilfield pumps for delivering a variety of oilfield fluids to a well at an oilfield. In particular, embodiments of oilfield pumps employing a linear electric motor (LEM) are described. The presence of a LEM in place of crankshaft or hydraulic driving techniques may reduce the number of equipment parts and therefore maintenance expenses dedicated to a pump assembly at an oilfield. The presence of an LEM may also increase the precision and control over the fluid delivery provided by the pump assembly.BACKGROUND OF THE RELATED ART[0002]Drilling, completing, and operating hydrocarbon wells involves the employment of a variety of large scale equipment. Thus, well operations may be inherently expensive in terms of both capital equipment expenditures and equipment maintenance. Furthermore, in many circumstances, conventional large scale equipment tends to provide output in a fairly imprecise manner, no matter the amount of expenditures incurr...

AI Technical Summary

Problems solved by technology

Thus, well operations may be inherently expensive in terms of both capital equipment expenditures and equipment maintenance.

Furthermore, in many circumstances, conventional large scale equipment tends to provide output in a fairly imprecise manner, no matter the amount of expenditures incurred.

Unfortunately, with such a large piece of equipment having numerous equipment parts playing a role in the mechanics of the pump, it may be difficult to attain a reliably precise output level from the pump.

However, compensating for the imprecise output of such pumps in this manner results in wasted pump output and leads to premature wear of pump parts.

Unfortunately, the employment of a hydraulically driven pump may dramatically increase the variety of equipment and parts employed in the pumping application.

That is, in order to attain the improved output precision, added expense in terms of capital equipment expenditures and equipment maintenance may be incurred.

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