Halliburton Energy Services, Inc.

Comitt Well Solutions LLC

William John Hunter

Etienne M Samson

Kris M Ravi

John L Maida

Krishna M Ravi

John Laureto Maida, Jr

Anthony M Badalamenti

Ronald R Faul

David Kulakofsky

Ronnie Faul

David S Kulakofsky

Systems and methods to maintain constant pressure within a chamber within a tool via a sliding seal, wherein the seal moves to increase or decrease the size of the chamber.

Methods and systems for a vent within a tool positioned within a wellbore

Utilizing a fluid flow rate within a tool to close and open a vent extending through a circumference of the tool. The vent may be positioned above a packer pair that is configured to extend across an annulus. The tool may include a vent, sliding sleeve, adjustable member, and plunger.

Methods and systems for a seal to maintain constant pressure within a tool with a sliding internal seal

Various disclosed distributed acoustic sensing (DAS) based systems and methods include embodiments that process the DAS measurements to detect one or more contrasts in acoustic signatures associated with one or more fluids flowing along a tubing string, and determine positions of the one or more contrasts as a function of time. The detected contrasts may be changes in acoustic signatures arising from one or more of: turbulence, frictional noise, acoustic attenuation, acoustic coupling, resonance frequency, resonance damping, and active noise generation by entrained materials. At least some of the contrasts correspond to interfaces between different fluids such as those that might be pumped during a cementing operation. Certain other method embodiments include acquiring DAS measurements along a borehole, processing the measurements to detect one or more acoustic signature contrasts associated with interfaces between different fluids in the borehole, and responsively displaying a position of at least one of said interfaces.

Downhole fluid tracking with distributed acoustic sensing

Various disclosed cement slurry monitoring methods include monitoring one or more parameter of the cement slurry at various positions along the borehole during the curing process and responsively identifying a span over which the slurry extends and whether there are any gaps or voids in that span. At least some system embodiments include a distributed sensing arrangement to provide parameter measurements as a function of position and time during the curing process. A computer analyzes the measurements to determine the span of the cement slurry and whether any gaps exist. Contemplated measurement parameters include temperature, pressure, strain, acoustic spectrum, acoustic coupling, and chemical concentration. Individually or in combination, these measurements can reveal in real time the state of the cement slurry and can enable remedial actions to be taken during or after the curing process if needed to address deficiencies in the annular seal being provided by the cement.

Cement slurry monitoring

A method of controlling a well operation can include monitoring at least one parameter of cement lining a wellbore, the monitoring being performed via at least one optical waveguide, and modifying the well operation in response to the parameter being outside of a predetermined acceptable range. A well monitoring system can include at least one optical waveguide which is used to sense at least one parameter of cement lining a wellbore, an optical interrogation system optically connected to the at least one optical waveguide, and a control system which controls operation of at least one item of well equipment in response to information received from the optical interrogation system.

Controlling well operations based on monitored parameters of cement health

A method of cementing involves introducing a pipe string into a well bore such that an annulus is defined between the pipe string and a wall of the well bore, and introducing a cement composition into the annulus. The cement composition includes cement, water, and an auto-sealing component. An annular structure, coupled to the pipe string, comprises an expandable material.

Growing community of inventors

The Woodlands, TX, United States of America

William John Hunter