Shell Oil Comapny

Quoc An On

Harry Van Der Heijden

Arie Van Zon

Eric Johannes Maria De Boer

Johan Paul Smit

Julian Richard Barnes

Aart Bartus Van Oort

Hendrikus Hyacinthus Deuling

Hendrik Dirkzwager

Robert Moene

Renata Helena Van Der Made

Robert Hardy Ellison

Jasper Roelf Smit

Jan Hermen Hendrik Meurs

Khrystyna Groen

John Smit

Arie Von Zon

Marinus Johannes Faber

The invention relates to a method of treating a hydrocarbon containing formation, comprising: (a) providing a composition to at least a portion of the hydrocarbon containing formation, wherein the composition comprises an anionic surfactant based on an alkoxylated primary alcohol having a branched aliphatic group, which group has an average carbon number of from 9 to 15 and an average number of branches of from 0.5 to 2.5, and having an average of at least 0.5 mole of alkylene oxide groups per mole of primary alcohol; and (b) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. Further, the invention relates to the hydrocarbon recovery composition that is used in said method.

Method and composition for enhanced hydrocarbon recovery

A method is provided for treating a hydrocarbon containing formation. The method comprises providing a hydrocarbon recovery composition comprising a mixture of branched internal olefin sulfonate molecules, and contacting hydrocarbons in the hydrocarbon containing formation with the hydrocarbon recovery composition. The mixture of branched internal olefin sulfonate molecules has an average number of carbon atoms of between 19 and 23, and an average number of branches of at least 0.6 per molecule. A hydrocarbon composition produced from a hydrocarbon containing formation, and a hydrocarbon recovery composition comprising a mixture of branched internal olefin sulfonate molecules are also provided.

Method and composition for enhanced oil recovery

The present invention relates to a ligand and its use in a catalyst for the oligomerization of olefinic monomers, the ligand having the general formula (VI);(R)(R)P&#x2014;N(R)&#x2014;P(R)&#x2003;&#x2003;(VI)wherein:the Rand Rgroups are independently selected from optionally substituted alkyl or heteroalkyl groups; the Rgroup is selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof; the R4 group is an optionally substituted alkylenedioxy, alkylenedimercapto or alkylenediamino structure which is bound to the phosphorus atom through the two oxygen, sulphur or nitrogen atoms of the alkylenedioxy, alkylenedimercapto or alkylenediamino structure or an optionally substituted arylenedioxy, arylenedimercapto or arylenediamino structure which is bound to the phosphorus atom through the two oxygen, sulphur or nitrogen atoms of the arylenedioxy, arylenedimercapto or arylenediamino structure.

Catalyst systems for the catalytic oligomerization of olefinic monomers

The present invention relates to a ligand and its use in a catalyst for the oligomerization of olefinic monomers, the ligand having the general formula (IV);(R)(R)P&#x2014;N(R)&#x2014;P(R)&#x2003;&#x2003;(IV).

The present invention relates to a ligand and its use in a catalyst for the oligomerization of olefinic monomers, the ligand having the general formula (VI):(R)(R)P&#x2014;N(R)&#x2014;P(R)&#x2003;&#x2003;(VI)

A process for the preparation of acylated secondary alcohol alkoxylates and a process for making secondary alcohol alkoxy sulfates comprising the steps of:&#x2014;

Process for the preparation of acylated secondary alcohol alkoxylates and secondary alcohol alkoxylates

The present invention relates to catalyst systems and a process for the simultaneous trimerization and tetramerization of olefinic monomers using those ligands.

Catalyst systems for the oligomerization of olefin monomers

The present invention relates to ligands and catalyst systems and a process for the simultaneous trimerization and tetramerization of olefinic monomers using said ligands, the ligands having the general formula (I):(R)P&#x2014;P(R)(R)&#x2550;N(R)&#x2003;&#x2003;(I)wherein Ris selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof;the Rgroups are independently selected from an optionally substituted aromatic group bearing a polar substituent on at least one of the ortho-positions; andthe Rgroups are independently selected from hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups with the proviso that when the group is aromatic it does not contain a polar substituent at any of the ortho-positions;with the proviso that m is 0 or 1, n is 1 or 2 and the total of m+n is 2.

Ligands and catalyst systems for the oligomerization of olefinic monomers

The present invention relates to a ligand and its use in a catalyst for the oligomerization of olefinic monomers, the ligand having the general formula (II);P(R)(R)&#x2014;P(R)&#x2550;N(R)&#x2003;&#x2003;(II)wherein:the Rgroup is selected from a hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl group; the Rgroup is selected from a hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl group; the Ris selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof; the Rgroup is an optionally substituted alkylenedioxy, alkylenedimercapto or alkylenediamino structure which is bound to the phosphorus atom through the two oxygen, sulphur or nitrogen atoms of the alkylenedioxy, alkylenedimercapto or alkylenediamino structure or an optionally substituted arylenedioxy, arylenedimercapto or arylenediamino structure which is bound to the phosphorus atom through the two oxygen, sulphur or nitrogen atoms of the arylenedioxy, arylenedimercapto or arylenediamino structure.

Ligands and catalyst systems thereof for the catalytic oligomerization of olefinic monomers

A catalyst precursor composition comprising: a source of chromium, molybdenum or tungsten; a first ligand having the general formula (R)(RP&#x2014;X&#x2014;P(R)(R); and a second ligand having the general formula (R)(R)P&#x2014;X'&#x2014;P(R)(R). The present invention also relates to a catalyst system comprising the catalyst precursor composition of the present invention and a cocatalyst. The present invention further relates to a process for the trimerization and tetramerization of olefinic monomers, particularly the trimerization and tetramerization of ethylene to 1-hexene and 1-octene, wherein the process comprises contacting at least one olefinic monomer with the catalyst system of the present invention.

Catalytic oligomerization of olefinic monomers

The present invention relates to a ligand and its use in a catalyst for the oligomerization of olefinic monomers, the ligand having the general formula (I);P(R)&#x2014;P(R)(R)&#x2550;N(R)&#x2003;&#x2003;(I)

A transition metal complex which is a bis-arylimine pyridine MXcomplex or a [bis-arylimine pyridine MXp+][NC&#x2212;]q complex comprising a bis-arylimine pyridine ligand and M is a transition metal atom; n matches the formal oxidation state of the transition metal atom M; X is halide, optionally substituted hydrocarbyl, alkoxide, amide, or hydride; NC&#x2212; is a non-coordinating anion; and p+q matches the formal oxidation state of the transition metal atom M. The transition metal complexes of the present invention, their complexes with non-coordinating anions and catalyst systems containing such complexes have good solubility in non-polar media and chemically inert non-polar solvents especially aromatic hydrocarbon solvents. The catalyst systems can be used for a wide range of (co-)oligomerization, polymerization and dimerization reactions.

Transition metal complexes

A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I):(R)(R)P-X-P(R)(R)&#x2003;&#x2003;(I)where X is a bivalent organic bridging group, Rand Rare hydrocarbyl groups, and Rand Rare aromatic groups; and c) a second ligand having the general formula (II):(R)(R)P-X'-P(R)(R)&#x2003;&#x2003;(II)where X&#x2032; is a bridging group containing nitrogen and R, R, Rand Rare hydrocarbyl groups. The present invention also relates to a catalyst system comprising the catalyst precursor composition of the present invention and a cocatalyst.

Catalytic trimerization and tetramerization of olefinic monomers

A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I);(R)(R)P&#x2014;X&#x2014;P(R)(R)&#x2003;&#x2003;(I)wherein X is a bivalent organic bridging group; Rand Rare independently selected from, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups, with the proviso that when Rand Rare aromatic groups they do not contain a polar substituent at any of the ortho-positions; Rand Rare independently selected from optionally substituted aromatic groups, each Rand Rbearing a polar substituent on at least one of the ortho-positions; and c) a second ligand having the general formula (II);(R)(R)P&#x2014;X'&#x2014;P(R)(R)&#x2003;&#x2003;(II)

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Amsterdam, Netherlands

Quoc An On