Mechanical seal protector for esp seal sections
AssigneeGE Oil & Gas ESP, Inc.
InventorsCharles COLLINS, James LE
Life of this patent
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Abstract
A seal section for use in a downhole submersible pumping system includes one or more fluid separation mechanisms, a shaft, a mechanical seal chamber and a mechanical seal inside the mechanical seal chamber. The seal section further comprises a mechanical seal protector around the mechanical seal. The mechanical seal protector includes a cap that surrounds a portion of the mechanical seal and a filter screen. The cap may also include one or more expulsion ports extending through the cap. The cap may be stationary or connected to the shaft and configured for rotation.
Claims19
A seal section for use in a downhole submersible pumping system, the seal section comprising:
- one or more fluid separation mechanisms
- a shaft;
- a mechanical seal chamber;
- a mechanical seal inside the mechanical seal chamber, wherein the mechanical seal is disposed along the shaft;
- and
- a mechanical seal protector, the mechanical seal protector comprising a cap, wherein the cap surrounds a portion of the mechanical seal.
A seal section for use in a downhole submersible pumping system disposed in a wellbore, the seal section comprising:
- one or more fluid separation mechanisms;
- a rotatable shaft;
- a mechanical seal chamber;
- a mechanical seal located in the mechanical seal chamber, wherein the mechanical seal is disposed along the shaft;
- and
- a mechanical seal protector surrounding a portion of the mechanical seal, the mechanical seal protector comprising a cap connected to the rotatable shaft, wherein the cap comprises a plurality of expulsion ports extending through the cap.
A mechanical seal protector for use in a seal section that includes a rotatable shaft and a mechanical seal around the rotatable shaft, the mechanical seal protector comprising:
- a stationary cap;
- a filter between the mechanical seal and the stationary cap;
- and
- an auxiliary seal secured to the stationary cap, wherein the auxiliary seal provides a sealing interface between the stationary cap and the rotatable shaft.
Dependencies are inferred from the claim text.