Chevron U.s.a. Inc.

Los Alamos National Security, LLC

Brian Christopher Llewellyn

Manuel Eduardo Gonzalez

Robert E Hermes

James Benjamin Bloys

Don Mayo Coates

Dennis John O'Rear

Russell Evan Cooper

Sujin Yean

Darrell Lynn Gallup

Lyman Arnold Young

Matthew Bernard Zielinski

Mark Anthony Emanuele

M Clark Thompson

Koby B Carlson

Methods and systems relate to the in-situ removal of heavy metals such as mercury, arsenic, etc., from produced fluids such as gases and crudes from a subterranean hydrocarbon-bearing formation. A sufficient amount of a fixing agent is injected into formation with a dilution fluid. The fixing agent reacts with the heavy metals forming precipitate, or is extracted heavy metals into the dilution fluid as soluble complexes. In one embodiment, the heavy metal precipitates remain in the formation. After the recovery of the produced fluid, the dilution fluid containing the heavy metal complexes is separated from the produced fluid, generating a treated produced fluid having a reduced concentration of heavy metals. In one embodiment, the dilution fluid is water, and the wastewater containing the heavy metal complexes after recovery can be recycled by injection into a reservoir.

In-situ method and system for removing heavy metals from produced fluids

An apparatus and method are disclosed for sensing a characteristic of a borehole. An exemplary apparatus includes a conductive pipe; an inlet, connected to the conductive pipe, for applying pulse to the conductive pipe; a resonant network device connected with the conductive pipe; and a transducer which is in operative communication with the resonant network device to measure a borehole characteristic, the transducer being configured to sense a modulated vibration frequency induced in the resonant network device when a pulse is applied to the inlet.

Method and apparatus for sensing a borehole characteristic

A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.

Controlling the pressure within an annular volume of a wellbore

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Kingwood, TX, United States of America

Brian Christopher Llewellyn