1
Ann M W Hoefer, Philip F Sullivan, Golchehreh Salamat, Curtis L Boney, Jesse C Lee, Yiyan Chen, Dean M Willberg, Marina Bulova, Christopher N Fredd, Belgin Baser, Timothy L Pope: Well treatment with dissolvable polymer. Schlumberger Technology Corporation, Thomas O Mitchell, David Cate, Robin Nava, July 15, 2008: US07398826 (37 worldwide citation)

Well treatment is disclosed that includes injecting a well treatment fluid with insoluble polyol polymer such as polyvinyl alcohol (PVOH) dispersed therein, depositing the insoluble polymer in the wellbore or an adjacent formation, and thereafter dissolving the polymer by reducing salinity and/or in ...


2
Carlos Abad, Jesse C Lee, Philip F Sullivan, Erik Nelson, Yiyan Chen, Belgin Baser, Lijun Lin: Internal breaker for oilfield treatments. Schlumberger Technology Corporation, David Cate, Robin Nava, Jeff Griffin, March 16, 2010: US07677311 (25 worldwide citation)

A composition and method for improving the fluid efficiency of many oilfield treatments is given. The composition is a solid additive, in a viscosified fluid, in a size range small enough that it enters formation pores; it optionally bridges there to form an internal filter cake, and then decomposes ...


3
Carlos Abad, Jesse C Lee, Philip F Sullivan, Erik Nelson, Yiyan Chen, Belgin Baser, Lijun Lin: Internal breaker for oilfield treatments. Schlumberger Technology Corporation, Martin Rzaniak, David Cate, Robin Nava, December 28, 2010: US07857051 (19 worldwide citation)

A composition and method for improving the fluid efficiency of many oilfield treatments is given. The composition is a solid additive, in a viscosified fluid, in a size range small enough that it enters formation pores; it optionally bridges there to form an internal filter cake, and then decomposes ...


4
Philip F Sullivan, Belgin Baser, Carlos Abad, Yiyan Chen, Mehmet Parlar, Gregory Kubala: Internal breaker for oilfield fluids. Schlumberger Technology Corporation, Darla Fonseca, David Cate, Robin Nava, October 30, 2007: US07287590 (8 worldwide citation)

Delayed breakers are given that break viscoelastic surfactant fluids inside the pores of formations into which the fluids have been injected. The breakers comprise proteins, proteins that contain breakers, or cells that contain breakers. Proteins become breakers, and proteins and cells release break ...


5
Lijun Lin, Yiyan Chen, Philip F Sullivan, Belgin Baser, Carlos Abad, Jesse C Lee: Oxidative internal breaker for viscoelastic surfactant fluids. Schlumberger Technology Corporation, Martin Rzaniak, David Cate, Robin Nava, February 1, 2011: US07879770 (8 worldwide citation)

Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Oxidizing agents such as air, oxygen ...


6
Philip F Sullivan, Belgin Baser, Carlos Abad, Yiyan Chen, Mehmet Parlar, Gregory Kubala: Internal breaker for oilfield fluids. Schlumberger Technology Corporation, Thomas O Mitchell, Darla Forseca, David Cate, October 7, 2008: US07431087 (6 worldwide citation)

Delayed breakers are given that break viscoelastic surfactant fluids inside the pores of formations into which the fluids have been injected. The breakers comprise proteins, proteins that contain breakers, or cells that contain breakers. Proteins become breakers, and proteins and cells release break ...


7
Belgin Baser, Curtis L Boney, Eric Clum, Jorge E Lopez de Cardenas: Multilayered ball sealer and method of use thereof. Schlumberger Technology Corporation, Rachel E Greene, Tim Curington, May 6, 2014: US08714250 (6 worldwide citation)

A multilayered ball sealer having a deformable layer. The multilayered ball sealer has an outer or intermediate layer that is deformable under pressure. In the former, the deformable layer may be water-soluble or hydrolysable. In the latter, the outer layer is a sheath that contains the deformable l ...


8
Sascha Trummer, Eric Clum, Curtis L Boney, Jorge E Lopez de Cardenas, Belgin Baser, Jason Swaren: Method of placing ball sealers for fluid diversion. Schlumberger Technology Corporation, October 22, 2013: US08561696 (4 worldwide citation)

A method for placing ball sealers within a well formed within a subterranean formation for sealing holes in a casing of the well is carried out by performing at least one of two operations. The first operation involves providing a tag with at least one ball sealer or a carrier fluid containing the a ...


9
Lijun Lin, Carlos Abad, Belgin Baser, Leiming Li: Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids. Schlumberger Technology Corporation, Daryl R Wright, Matthieu Vandermolen, Robin Nava, July 9, 2013: US08481462 (1 worldwide citation)

Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Bromate oxidizing agents are used al ...


10
Lijun Lin, Carlos Abad, Belgin Baser, Leiming Li: Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids. Schlumberger Technology Corporation, Jeremy D Tillman, Rachel Greene, Tim Curington, April 14, 2015: US09006153

Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Bromate oxidizing agents are used al ...