Patents by Inventor Christopher S. Daeffler

Christopher S. Daeffler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20260185435
    Abstract: The present disclosure provides a method for treating a subterranean formation, may include injecting a treatment fluid into the subterranean formation, the treatment fluid including at least one of an inorganic acid or an organic acid, at least one of hydrofluoric acid or hydrofluoric acid precursor, and a precipitate inhibitor, and after injecting the treatment fluid into the subterranean formation, performing at least one of a fracturing treatment or a stimulation treatment. The inorganic acid includes at least one of hydrochloric acid or methanesulfonic acid. The treatment fluid can further include a blend of organic acids including at least one of citric acid, acetic acid, formic acid, or lactic acid. The hydrofluoric acid precursor includes at least one of ammonium bifluoride or ammonium fluoride. The precipitate inhibitor prevents precipitation of calcium fluoride and magnesium fluoride. The treatment fluid can be pumped in a single step without requiring a preflush treatment.
    Type: Application
    Filed: October 23, 2025
    Publication date: July 2, 2026
    Inventors: Abdul Muqtadir Khan, Murtaza Ziauddin, Taner Batmaz, Konstantin Vidma, Haithem Abdelmoumene Segmane, Abdurauf M Kh Ben Sulaiman, Christopher S. Daeffler, Philippe Enkababian, Ziyad Alayouri
  • Publication number: 20260132330
    Abstract: The present disclosure provides a two-phase liquid-gas fluid for hydraulic fracturing, including a liquid phase including a foaming surfactant and a branched synthetic polymer, wherein the polymer includes monomers selected from the group consisting of acrylamide, acrylic acid, methacrylic acid, 2-acrylamido-2-methylpropane sulfonic acid, and combinations thereof, and a gas phase comprising CO2, wherein the fluid maintains a viscosity of at least 70 cp after exposure to temperatures of 200° F. to 300° F. for at least 90 minutes. The foam fluid demonstrates thermal stability at high temperatures and maintains stable viscosity under high temperature and pressure conditions, making the fluid suitable for hydraulic fracturing applications in high-temperature reservoirs.
    Type: Application
    Filed: October 24, 2025
    Publication date: May 14, 2026
    Inventors: Anna Beletskaya, Christopher S. Daeffler, Ahmed Rabie, Javier Sanchez Reyes, Melissa Chia Mei Teoh, Alvinda Sri Hanamertani, Oscar Rincon Ortiz, Roberto Tineo
  • Patent number: 12577450
    Abstract: An aqueous composition includes an acid, or an ammonium or salt thereof; a hydrogen fluoride (HF) source; and a fluoride scale inhibitor. Various methods include providing the aqueous composition and performing a treatment operation using the aqueous composition.
    Type: Grant
    Filed: November 9, 2023
    Date of Patent: March 17, 2026
    Assignee: Schlumberger Technology Corporation
    Inventors: Konstantin Viktorovich Vidma, Murtaza Ziauddin, Daniel Gettemy, Christopher S. Daeffler, Temiloluwa Iyenoma Yusuf
  • Publication number: 20260071530
    Abstract: Certain embodiments of the present disclosure are directed to techniques for creating a filler material within a slickwater slurry. The filler material is generated by adding a cationic additive to the slickwater slurry. The cationic additive can be introduced to the slurry either before, after, or simultaneously with the proppant or friction reducer. Upon addition and mixing with the friction reducer, the cationic additive reacts due to electrostatic attraction, forming gel-like substances or agglomerates. This process, which may be termed complex coacervation, agglomeration, or aggregation, may entrap proppant particles during formation, with proppant particles possibly being trapped within these agglomerates or aggregates. The operation then proceeds as a slickwater treatment. After the proppant is delivered into the fracture and subsequently transported and settled, the agglomerates act as fillers within the proppant pack, thereby reducing its bulk density.
    Type: Application
    Filed: September 10, 2025
    Publication date: March 12, 2026
    Inventors: Konstantin Viktorovich Vidma, Christopher S. Daeffler, Melissa Chia Mei Teoh
  • Publication number: 20240392654
    Abstract: A system for capturing a target species from an exhaust gas stream generated by at least one engine at a surface of a wellbore utilized in reservoir stimulation for subsurface energy recovery. The system includes a heat exchanging system for cooling the exhaust gas stream to a predetermined temperature. The system includes a water separation unit for separating a liquid from the cooled exhaust gas stream. The system includes a target species capture module for capturing the target species from the cooled exhaust gas stream. The system includes a target species regeneration module to extract the captured target species. The system includes a target species compression module for liquefying the captured target species. The system includes a target species storage module for storing the liquified target species, wherein the system is mounted on a mobile platform for transportation to and from the surface of the wellbore.
    Type: Application
    Filed: May 28, 2024
    Publication date: November 28, 2024
    Inventors: Anna Beletskaya, Ryan Epp, Konstantin Viktorovich Vidma, Roman Alexandrovich Skachkov, Christopher S. Daeffler, Richard L. Christie, Shahnawaz Hossain Molla, Glen Andrew Hay
  • Publication number: 20240101891
    Abstract: An aqueous composition includes an acid, or an ammonium or salt thereof; a hydrogen fluoride (HF) source; and a fluoride scale inhibitor. Various methods include providing the aqueous composition and performing a treatment operation using the aqueous composition.
    Type: Application
    Filed: November 9, 2023
    Publication date: March 28, 2024
    Inventors: Konstantin Viktorovich Vidma, Murtaza Ziauddin, Daniel Gettemy, Christopher S. Daeffler, Temiloluwa Iyenoma Yusuf
  • Publication number: 20230365854
    Abstract: Copolymer additives for crude oils, crude oil mixtures of the copolymer additives and crude oils, and methods for producing or forming the crude oil mixtures are provided. The crude oil mixtures and methods comprise at least copolymer additive introduce or applied to crude oil, wherein the at least one copolymer additive comprises one or more copolymers of vinylpyrrolidone and one or more alpha-olefins.
    Type: Application
    Filed: May 16, 2022
    Publication date: November 16, 2023
    Inventors: Christopher S. Daeffler, Graham Robert Drummond, Grady F. Parker III, Hema Rampersad
  • Patent number: 11549066
    Abstract: Citrate polyester additives for crude oils, mixtures of the citrate polyester additives and crude oils, and methods for producing or forming the mixtures are provided. The mixtures and methods comprise at least one citrate polyester additive introduce or applied to crude oil, wherein the at least one citrate polyester additive comprises one or more citrate crosspolymers.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: January 10, 2023
    Assignee: CAMERON INTERNATIONAL CORPORATION
    Inventors: Christopher S. Daeffler, Graham Robert Drummond, Grady F. Parker, III, Hema Rampersad
  • Patent number: 9214635
    Abstract: Compositions, synthesis and applications for benzene, furan, thiophene, selenophene, pyrole, pyran, pyridine, oxazole, thiazole and imidazole derivatized anthra[2,3-b:6,7-b?]dithiophene (ADT) based polymers, namely, poly{5,11-bis(5-(2-ethylhexyl)thiophen-2-yl)anthra[2,3-b:6,7-b?]dithiophene-2,8-diyl-alt-2-ethyl-1-(thieno[3,4-b]thiophen-2-yl)hexan-1-one-4,6-diyl}, poly{5,11-bis(5-(2-ethylhexyl)furan-2-yl)anthra[2,3-b:6,7-b?]dithiophene-2,8-diyl-alt-2-ethyl-1-(thieno[3,4-b]thiophen-2-yl)hexan-1-one-4,6-diyl and poly{5,11-bis(5-(2-ethylhexyl)selenophen-2-yl)anthra[2,3-b:6,7-b?]dithiophene-2,8-diyl-alt-2-ethyl-1-(thieno[3,4-b]thiophen-2-yl)hexan-1-one-4,6-diyl} are disclosed. Further, an organic solar cell constructed of a derivatized anthra[2,3-b:6,7-b?]dithiophene (ADT) based polymer is discussed.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: December 15, 2015
    Assignees: Phillips 66 Company, Solarmer Energy, Inc.
    Inventors: Chenjun Shi, Ruby Chen, Jun Yang, Christopher S. Daeffler, Janice Hawkins, Yue Wu, Wei Wang, Kathy Woody, Joe Bullock, Hui Huang, Amit Palkar, Ting He
  • Publication number: 20150136224
    Abstract: Compositions, synthesis and applications for benzene, furan, thiophene, selenophene, pyrole, pyran, pyridine, oxazole, thiazole and imidazole derivatized anthra[2,3-b:6,7-b?]dithiophene (ADT) based polymers, namely, poly{5,11-bis(5-(2-ethylhexyl)thiophen-2-yl)anthra[2,3-b:6,7-b?]dithiophene-2,8-diyl-alt-2-ethyl-1-(thieno[3,4-b]thiophen-2-yl)hexan-1-one-4,6-diyl}, poly{5,11-bis(5-(2-ethylhexyl)furan-2-yl)anthra[2,3-b:6,7-b?]dithiophene-2,8-diyl-alt-2-ethyl-1-(thieno[3,4-b]thiophen-2-yl)hexan-1-one-4,6-diyl and poly{5,11-bis(5-(2-ethylhexyl)selenophen-2-yl)anthra[2,3-b:6,7-b?]dithiophene-2,8-diyl-alt-2-ethyl-1-(thieno[3,4-b]thiophen-2-yl)hexan-1-one-4,6-diyl} are disclosed. Further, an organic solar cell constructed of a derivatized anthra[2,3-b:6,7-b?]dithiophene (ADT) based polymer is discussed.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 21, 2015
    Applicants: Phillips 66 Company, Solarmer Energy, Inc.
    Inventors: Chenjun Shi, Ruby Chen, Jun Yang, Christopher S. Daeffler, Janice Hawkins, Yue Wu, Wei Wang, Kathy Woody, Joe Bullock, Hui Huang, Amit Palkar, Ting He