Patent ID: 11965511
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 16:
17. An electric submersible pump (ESP) assembly comprising:
a bellows motor expansion chamber comprising a metal bellows, the motor expansion chamber comprising:
the metal bellows coupled to a releasable bellows anti-movement system, the releasable bellows anti-movement system comprising a heat-activated release and alterable between:
an immobilizing position, wherein the releasable anti-movement system prevents concertinaed movement of the metal bellows in the immobilizing position, and
a released position, wherein the metal bellows is concertinaedly moveable in the released position, wherein the releasable bellows anti-movement system is in the immobilizing position below a release temperature and in the released position above the release temperature; and

a well fluid inlet of the bellows motor expansion chamber comprising a filter section, the filter section comprising:
at least two concentric filters, each filter of the at least two concentric filters of varying porosity; and
housing surrounding the at least two concentric filters, the housing comprising angled ribs and flow holes serving as the well fluid inlet of the filter section, the flow holes extending through the housing and the at least two concentric filters.