1
Drent Eit: Process for the preparation of polyketones.. Shell Int Research, October 17, 1984: EP0121965-A2 (304 worldwide citation)

A process for the preparation of polyketones by polymerizing a mixture of CO and an alkenically unsaturated hydrocarbon in the presence of a Group VIII metal catalyst containing ligands, which comprise hydrocarbon groups that are bonded to an element from groub Vb, characterized in that, as catalyst ...


2
Bielamowicz Lawrence James, de Rouffignac Eric, Vinegar Harold J, Wellington Scott Lee: Wellbore electrical heater. Shell Int Research, September 8, 1999: EP0940558-A1 (274 worldwide citation)

A heater is disclosed which comprises an electrical insulating material surrounding an annular heating element configuration; wherein there is no casing surrounding an annular heating element configuration.


3
Drent Eit: Process for the preparation of polyketones.. Shell Int Research, May 14, 1986: EP0181014-A1 (227 worldwide citation)

Process for the preparation of polyketones by polymerization of a mixture of CO and an alkenically unsaturated hydrocarbon in the presence of a Group-VIII-metal catalyst containing ligands, wherein hydrocarbon groups occur which are bound to an element from Group V a, characterized in that the catal ...


4
Heating of underground formations. Shell Int Research, November 17, 1965: GB1010023-A (192 worldwide citation)

An underground formation is heated by injecting fuel (such as methane) at a point 1 into the formation, injecting oxygen-containing fluid into the formation at a point 2 spaced from the point 1, igniting the fuel and oxygen-containing fluid mixture to form a combustion front 14, discharging the prod ...


5
Cook Robert Lance, Brisco David Paul, Stewart R Bruce, Ring Lev, Haut Richard Carl, Mack Robert D, Duell Alan B: Forming a casing while simultaneously drilling a wellbore. Shell Int Research, September 27, 2000: GB2348223-A (190 worldwide citation)

An apparatus 3500 is positioned within a preexisting section of wellbore 3575 having casing 3590. A new section of wellbore is drilled by a bit 3535 which is driven by a mud motor 3530 actuated by fluid pumped via passages 3540,3545, pressure chamber 3550 and passage 3555. At some point during the o ...


6
Cook Robert Lance, Brisco David Paul, Stewart R Bruce, Ring Lev, Haut Richard Carl, Mack Robert D: Wellbore casing with radially expanded liner extruded off a mandrel.. Shell Int Research, June 14, 2000: GB2344606-A (157 worldwide citation)

A tubular liner 210 and mandrel 205 are positioned within a section of wellbore 100 with the tubular liner overlapping an existing casing 110 (if present). A hardenable fluidic material (305, figure 3) is injected into the section of wellbore 310 below the level of the mandrel 205 and into the annul ...


7
Lohbeck Wilheminus Christianus: Deformable tube. Shell Int Research, October 27, 1999: EP0952305-A1 (156 worldwide citation)

A deformable tube has a wall which comprises a number of axial, toroidal or helical tubules which are at least partly deformed in response to deformation of the tube in radial and/or axial directions.


8
Van Broekhoven Johannes Adrian, Drent Eit, Klei Ebel: New polymers of carbon monoxide and ethene.. Shell Int Research, March 11, 1987: EP0213671-A1 (137 worldwide citation)

New polymers of carbon monoxide with ethene and with one or more other olefinically unsaturated hydrocarbons (A), with less than 20 carbon atoms characterized in that, a) the polymers have a linear structure, b) they consist of units -CO(C2H4)- and units -CO-(A)-, c) said units -CO-(A)- are randomly ...


9
Cook Robert Lance, Brisco David Paul, Stewart R Bruce, Ring Lev, Haut Richard Carl, Mack Robert D: Method of forming a wellhead. Shell Int Research, September 20, 2000: GB2347950-A (134 worldwide citation)

A wellhead is formed by extruding a plurality of tubular liners 1520, 1530, 1535 off of a mandrel into contact with an outer casing 1510. The first tubular liner 1520 and mandrel are positioned within the wellbore with the tubular liner in an overlapping relationship with the outer casing 1510. At l ...


10
Bertaux Jean Marie Alexandre, Germaine Gilbert Robert Bernar, Janssen Martinus Maria Petrus, Hoek Arend: Process for producing lubricating base oils. Shell Int Research, June 4, 1997: EP0776959-A2 (133 worldwide citation)

Process for the preparation of lubricating base oils having a VI of at least 150 from a Fischer-Tropsch wax feed, which process comprises the steps of: (a) contacting the Fischer-Tropsch wax feed with a hydroconversion catalyst under hydroconversion conditions, (b) separating the hydroconverted effl ...