Halliburton Company

Halliburton Energy Services, Inc.

Paul O Padgett

Calvin Lynn Stegemoeller

Stephen F Crain

Wayne A Handke

Ricky Layne Covington

David W Ritter

Kevin D Edgley

Craig Allen Sneed

Jerry L Logan

Stanley Vernon Stephenson

Ronald E Dant

Charles E Neal

Paul Alan Brown

Vincent P Rivera

Phillip N Naegele

Perry A Jones

Lanny R Landram

Michael J Banse

Kent J Dieball

A method and apparatus are disclosed for a mixing system with a recirculation pump and a sensor configured to measure a property of a fluid discharged from the recirculation pump, wherein the sensor may transmit the property to a control system to allow an operator to adjust the mixing system in response to changes in the measurement signal.

Method and apparatus for improving mixing of cement slurry

A mixing apparatus includes a mixing tube, a liquid inlet, a dry substance inlet and a recirculation mixture inlet. The mixing apparatus is utilized with a tub. A liquid and a dry substance may be mixed in the mixing tube and the mixture may be recirculated so that a liquid, a dry substance and a recirculated mixture may all be mixed in a mixing tube and subsequently utilized in a wellbore. The mixing apparatus includes a valve connected to the liquid inlet. The valve comprises a cylindrical outer housing, a jetting sleeve and a rotatable plug therein. The jetting sleeve is disposed in the outer housing and has a plurality of ports which will direct liquid downwardly and inwardly so that it mixes with the dry substance as the dry substance passes downwardly in the mixing tube. The plug may be rotated in the jetting sleeve to completely cover all the jetting ports to prevent flow into the mixing tube and is rotatable to an open position in which liquid may be allowed to flow through the jetting ports. The valve is positioned at the exit of the liquid inlet.

Mixing apparatus with rotary jet water valve

A continuous multi-component slurrying process at an oil or gas well comprises flowing at least three separate streams of different essential materials directly into a predetermined mixing unit at the oil or gas well, wherein each of the essential materials is required to obtain a predetermined defining characteristic of the slurry.

Continuous multi-component slurrying process at oil or gas well

The apparatus of the present invention includes a mixing tube and inlets for conveying substances into the mixing tube such that the components intersect at a common point. A replaceable insert directs a dry component into the mixing tube. A liquid inlet bi-directionally sprays a liquid component between a wall of the mixing tube and the insert and toward the common point. A recirculation inlet directs a recirculated component toward the common point. Mixing is enhanced by a flow deflector and a flow interceptor which converge and turn the substances. The method of the present invention includes conveying substances into a mixing tube and intersecting the substances at a common point in the mixing tube to form a mixture.

Apparatus for mixing

A method of controlling a continuous multi-component slurrying process at an oil or gas well comprises continuously flowing substances for creating a slurry in response to a slurry flow rate factor and continuously flowing another substance for the slurry in response to a flow rate of at least a predetermined one of the other substances or the slurry itself. The method can include density control, slurry (tub) level control, and a combination of such controls. The method can operate in either closed loop or open loop manner, and control can be effected with either of two types of control signals depending on whether the controlled device is an integrating or non-integrating type. The method can also provide for bumpless transition between manual and automatic control.

Control method for a multi-component slurrying process

A system and method for mixing cement slurries at an oil or gas well site and for pumping such slurries into the well provide automatic combined and interrelated density and pumping control and selectable sequential control of predetermined mixing and pumping stages. Specific conditions automatically controlled include water rate, water pressure, slurry density, recirculating slurry pressure and downhole pump rate. Each of these conditions is the subject of a respective control loop that operates independently, but under control from a central controller. The central controller generates interrelated inlet water, inlet dry cement and outlet downhole pumping control signals responsive to operated-entered desired operating characteristics.

Cement mixing and pumping system and method for oil/gas well

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Duncan, OK, United States of America

Paul O Padgett