The Dow Chemical Company

Dow Global Technolgoies LLC

Conocophillips Company

California Institute of Technology

Bp Chemicals Limited

Landmark Graphics Corporation

The University of Bergen

James C Stevens

Francis J Timmers

David D Devore

George W Knight

Daniel D VanderLende

Shih-Yaw Lai

Robert K Rosen

Edmund M Carnahan

Yunwa Wilson Cheung

Peter N Nickias

Dan Thomas Mueller

David R Wilson

Pak-Wing Steve Chum

David R Neithamer

Patricia Ansems

Phillip Dene Hustad

Roger L Kuhlman

Timothy Todd Wenzel

Duane R Romer

Colin Li Pi Shan

Daniel J Arriola

David T Gillespie

Jeffrey D Weinhold

Gordon R Roof

Paul C Vosejpka

Benjamin C Poon

Sylvie Y Desjardins

Richard E Campbell, Jr

Stephen F Hahn

Thoi H Ho

Charles F Diehl

Chung P Park

Jasson T Patton

Brian W Kolthammer

Teresa Plumley Karjala

Selim Yalvac

Harry A Atwater

Nathan S Lewis

Martin J Guest

James Keenihan

Deepak R Parikh

Marty W DeGroot

David E Henton

Michael E Mills

Eugene Y Chen

Chung Poo Park

Kevin A Frazier

Thomas A Chamberlin

David R Zornes

Lee Spencer

Sean Andrew Spicer

John R Wilson

Daniel D Vanderlende

Lars Hovda

Amal C Phadke

Praveen Gonuguntla

Hendrik E Tuinstra

David D Graf

Alexander W DeGroot

Pamela J Stirn

Daryoosh Beigzadeh

William A Fordyce

Robert D Mussell

Harold W Boone

Gregory F Schmidt

Robert H Terbrueggen

Rick D Watts

Samuel Ethiopia

Stein Haavardstein

Brett Borland

Vincenzo Busico

Roberta Cipullo

Mark McAdon

Thomas W Karjala

Alexander Willem deGroot

Kevin P Peil

George P Clingerman

Bruce A Story

Donald J Perettie

Bernard A Baldwin

Kevin D Maak

Jorge Soto

Grant B Jacobsen

Corwin J Bredeweg

John J Gathers

Brian W S Kolthammer

Robert E LaPointe

Kevin W McKay

Narayan Ramesh

Lawrence T Kale

Jason A Reese

Wayde V Konze

Samar R Teli

Andres Cesar Callegari

William A Gros

Jeffrey P Bosco

James J Howard

Debra J Mangold

Arnold L Gatzke

Gregory M Kimball

The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool () is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing () to fill the outer annulus () with cement. The tool () has a cylindrical wall () which is formed from steel () and elastomeric () elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations. (FIG.).

Behind casing cementing tool

The invention relates to a method of conducting a perf wash cement ('P/W/C') abandonment job in an offshore oil or gas well annulus (), in particular the washing or cementing operation using a rotating head () with nozzles () dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).

Behind casing wash and cement

The invention relates to a method of conducting a perf wash cement ('P/W/C') abandonment job in an offshore oil or gas well annulus, in particular the washing or cementing operation using a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.

The invention relates to a cementing tool () and method for setting a cement plug. Instead of the conventional 'balanced plug', the technique involves pumping cement whilst pulling and rotating the tool. The cementing tool () includes nozzles () for jetting cement which are located in a relatively narrow region () of the tool and a larger diameter choke region () proximal of the nozzles (). The end of the tool () is closed off and tapered. The tool is passed down the well to a location where it is desired to set a plug, then cement is injected whilst rotating and withdrawing the tool. The jets of cement help displace existing fluid in the well thereby reducing mixing of the existing fluid with the cement, The choke region () increases the flow energy, whilst the tapered end () helps prevent disruption to the cement as the tool is withdrawn. The choke region () may be expandable to allow the tool to pass through a cased part of the well and then set a plug in an under-reamed open hole part of the well.

Setting a cement plug

The invention relates to a cementing tool for use in oil and gas well decommissioning operations, in particular so called perforate, wash and cement procedures. The tool () is designed for running in a well on drill string and for jetting cement through previously formed perforations in the casing () to fill the outer annulus () with cement. The tool () has a cylindrical wall () which is formed from steel () and elastomeric () elements, whereby it is expandable between a first diameter in which it may be run down the well and a second, larger diameter deployed during cementing operations.

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining:

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

The present invention provides methods for making pnictide compositions, particularly photoactive and/or semiconductive pnictides. In many embodiments, these compositions are in the form of thin films grown on a wide range of suitable substrates to be incorporated into a wide range of microelectronic devices, including photovoltaic devices, photodetectors, light emitting diodes, betavoltaic devices, thermoelectric devices, transistors, other optoelectronic devices, and the like. As an overview, the present invention prepares these compositions from suitable source compounds in which a vapor flux is derived from a source compound in a first processing zone, the vapor flux is treated in a second processing zone distinct from the first processing zone, and then the treated vapor flux, optionally in combination with one or more other ingredients, is used to grow pnictide films on a suitable substrate.

Methodology for forming pnictide compositions suitable for use in microelectronic devices

The present invention is premised upon an improved photovoltaic device ('PV device'), more particularly to an improved photovoltaic device with a multilayered photovoltaic cell assembly and a body portion joined at an interface region.

Photovoltaic device

The subject invention pertains to homogeneous liquid low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 10%, and a pour point, as measured by ASTM D97, of less than 50&#xb0; C. The subject invention also pertains to homogeneous gel-like low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 50%, and a pour point, as measured by ASTM D97, of less than 90&#xb0; C.

Liquid and gel-like low molecular weight ethylene polymers

A composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and 1-octene and a polymerization process using the polymerization modifier.

Polymerization modifiers

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Richmond, TX, United States of America

James C Stevens