King Fahd University of Petroleum and Minerals

Saudi Arabian Oil Company

Muhammad Mansha

Nisar Ullah

Rajendra Arunkumar Kalgaonkar

Mohammed Abudullah Bataweel

Eyad Alali

Yasir Abbas

Ibrahim Khan

Ahsanulhaq Qurashi

Abdul Waheed

Nour Baqader

Izzat Wajih Kazi

Mohammed Abdullah Bataweel

Nadeem Baig

Safyan Akram Khan

Manzar Sohail

Shahid Ali

A method, wellbore, and pill for treating a region of a subterranean formation adjacent a wellbore zone of the wellbore, including injecting a gellable treatment composition (e.g., as the pill) through the wellbore zone into the region of the subterranean formation adjacent the wellbore zone, allowing the gellable treatment composition to form nanoparticles in-situ in the region and gel in the region via heat provided by the region to prevent or reduce flow of an unwanted fluid from the region into the wellbore zone. The gellable treatment composition may include a zwitterionic gemini surfactant (ZGS).

Treatment of subterranean formations

A method of controlling a permeability zone in a reservoir includes introducing a diverter agent comprising a morpholinium based zwitterionic surfactant including a sulfonate terminal moiety, an ammonium-based zwitterionic surfactant, and an activator in a wellbore. Once introduced, the diverter agent contacts a high permeability zone in the reservoir. The diverter agent heats and gels to form a gelled diverter agent in the high permeability zone, subsequently forming a zone of decreased permeability.

Viscoelastic surfactants for acid diversion in downhole operations

A diverter agent includes a morpholinium based zwitterionic surfactant having a sulfonate terminal moiety; and an ammonium based zwitterionic surfactant.

Methods and materials for wellbore fluid diversion using visco-elastic surfactants

A fracturing fluid may include a first surfactant and a second surfactant. The first surfactant may have a structure represented by formula (I): wherein m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10. The second surfactant having a structure represented by Formula (II): wherein Ris a C-Chydrocarbon group or a C-Csubstituted hydrocarbon group, Ris a C-Chydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4. Methods of treating a hydrocarbon-bearing formation include injecting the fracturing fluid in the hydrocarbon-bearing formation, the fracturing fluid being configured to transport a proppant in fractures of the hydrocarbon-bearing formation.

Fracturing fluids based on viscoelastic surfactants

A wellbore fluid including a first surfactant, a second surfactant, an activator and an aqueous base fluid is provided. The first surfactant has a structure represented by Formula (I): where Y, Y, Y, Yare each, independently, a sulfonate, a carboxylate, an ester or a hydroxyl group, m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10. The second surfactant has a structure represented by Formula (III): where Ris a C-Chydrocarbon group or a C-Csubstituted hydrocarbon group, Ris a C-Chydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4. A method of using the wellbore fluid for treating a hydrocarbon-containing formation is also provided.

Methods and compositions of piperazine-based viscoelastic surfactants as diversion agents

A wellbore fluid including a first surfactant, a second surfactant, an activator and an aqueous base fluid is provided. The first surfactant has a structure represented by Formula (I): where Y, Y, Y, Yare each, independently, a sulfonate, a carboxylate, an ester or a hydroxyl group, m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10. The second surfactant has a structure represented by Formula (III): where Ris a C&#x2014;Chydrocarbon group or a C&#x2014;Csubstituted hydrocarbon group, Ris C&#x2014;Chydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4. A method of using the wellbore fluid for treating a hydrocarbon-containing formation is also provided.

Piperazine-based viscoelastic surfactants for hydraulic fracturing applications

A wellbore fluid including a first surfactant, a second surfactant, an activator and an aqueous base fluid is provided. The first surfactant has a structure represented by Formula (I): where m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10. The second surfactant has a structure represented by Formula (III): where Ris a C-Chydrocarbon group or a C-Csubstituted hydrocarbon group, Ris a C-Chydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4. A method for treating a hydrocarbon-containing formation with the wellbore fluid is also provided.

Methods and compositions of using viscoelastic surfactants as diversion agents

A crosslinked resin made up of polymerized units of a linear polyamine with at least 3 primary and/or secondary amine functionalities and a bisacrylamide. The crosslinked polymers are porous spherical particles with a BET surface area in the range of 50-120 m/g. A method of the synthesizing the crosslinked polymer is specified. A method for using the crosslinked resin as an adsorbent material in removing pollutants including organic dyes (e.g. Congo red, Rhodamine B) and heavy metals from an aqueous solution or an industrial wastewater sample is also described.

Method for removing a pollutant from aqueous solution with a crosslinked polymer

A method for detecting mercury (Hg) ions in an aqueous solution is described. The method includes contacting the aqueous solution with a chemosensor to form a mixture; and monitoring a change in a fluorescence emission profile of the chemosensor in the mixture to determine the presence or absence of Hgions in the aqueous solution. The chemosensor includes pyrene silica nanoparticles where at least one pyrene is bonded to a surface of a silica nanoparticle through an amide bond with a formula of, pyrene-C(&#x2550;O)NHR-silica nanoparticle, and where R is an alkyl chain.

Method for detecting mercury with pyrene functionalized silica nanoparticles

Crosslinked resin, synthesis thereof, and use for removing organic dyes

A copolymer containing carbazole- and cyanovinylene-based moieties, a photoelectrode comprising a metal oxide substrate and the copolymer as a photoelectrocatalyst component to the photoelectrode, as well as a photoelectrochemical cell including the photoelectrode. Methods of producing the copolymers, and methods of using the photoelectrochemical cell to produce hydrogen gas and oxygen gas through water splitting are also provided.

Copolymer for photoelectrocatalytic water splitting

A copolymer containing carbazole-based and vinylene based moieties, a photoelectrode comprising a metal oxide substrate and the copolymer as a photoelectrocatalyst component to the photoelectrode, as well as a photoelectrochemical cell including the photoelectrode. Methods of producing the copolymers, and methods of using the photoelectrochemical cell to produce hydrogen gas are also provided.

Copolymer, a method of synthesizing thereof, and a method for producing hydrogen gas

A method for producing a compound of formula (I) or a pharmaceutically acceptable salt, solvate, tautomer or stereoisomer, such as compound 1 and compound 2 is disclosed. The method proceeds through an O-allylated tyrosine-based compound, such as compound 3 and preferably comprises [3,3] sigmatropic Claisen rearrangement and olefin cross metathesis reactions. In addition, a pharmaceutical composition comprising a compound of formula (I) a tumor necrosis factor (TNF) related apoptosis inducing ligand (TRAIL) and a pharmaceutically acceptable carrier or excipient is disclosed.

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Dhahran, Saudi Arabia

Muhammad Mansha