ARTIFICIAL LIFT STRUCTURES
First Claim
1. A mechanism for driving a reciprocating pump or an artificial lift device, the mechanism comprising:
- a linear electric motor and a gas spring, the mass of gas in said spring not being preset but being continually controlled in accordance with the current demands of said linear electric motor, integrated over a plurality of complete operating cycles of said reciprocating pump or artificial lift mechanism, characterised in that electrical conductors of said liner electric motor are patterned metal laminations absent a dielectric substrate.
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Accused Products
Abstract
This invention demonstrates an improved method of constructing an artificial lift device for deep wells, in which the deadload of the pump mechanism is supported by a continuously-controlled gas spring. The reciprocating motion is produced by a very unusual form of linear motor using a plurality of radially disposed conducting vanes and having no wire coils. The machine is highly efficient and is able to deduce many of the conditions obtaining at the pump by computations from the measured power demand at each point of the pumping cycle. The device is self-protecting and self-optimising.
19 Citations
19 Claims
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1. A mechanism for driving a reciprocating pump or an artificial lift device, the mechanism comprising:
- a linear electric motor and a gas spring, the mass of gas in said spring not being preset but being continually controlled in accordance with the current demands of said linear electric motor, integrated over a plurality of complete operating cycles of said reciprocating pump or artificial lift mechanism, characterised in that electrical conductors of said liner electric motor are patterned metal laminations absent a dielectric substrate.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
Specification