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Full-Text Articles in Petroleum Engineering
Re-Crosslinkable Hyper-Branched Polymer Gels Based On A Transamidation Reaction, Tao Song, Baojun Bai, Thomas P. Schuman
Re-Crosslinkable Hyper-Branched Polymer Gels Based On A Transamidation Reaction, Tao Song, Baojun Bai, Thomas P. Schuman
Patents
The present invention generally relates to the field of conformance control in oil fields, particularly to a re-crosslinkable preformed particle gel system, and composition thereof. The composition of the re-crosslinkable preformed particle gel system contains monomers, crosslinkers, a polymer matrix, and additives. Components in the composition for re-crosslinkable preformed particle gel in the present invention have excellent compatibility with each other, and the obtained gel has excellent long term high-temperature resistance property. Different from prior products, in the recrosslinkable preformed particle gel compositions according to embodiments of the present invention, the components that are used to re-crosslink the particle gels …
Re-Crosslinkable Particle For Conformance Control And Temporary Plugging, Yifu Long, Bowen Yu, Baojun Bai, Thomas P. Schuman
Re-Crosslinkable Particle For Conformance Control And Temporary Plugging, Yifu Long, Bowen Yu, Baojun Bai, Thomas P. Schuman
Patents
The present invention generally relates to the composition of particle gels for conformance control, well drilling and well treatments. More particularly, this invention relates to swellable polymer particle gels that can re-crosslink, i.e., reassociate and self-heal, at subterranean conditions. These particle gels can be deployed to improve the conformance of water flooding of especially matrix bypass events (MBEs), that are also known as void space conduits. Moreover, these particle gels can be deployed for controlling the water production and increasing of petroleum recovery. The inventive particles can also be deployed as diverter for well stimulation.
Nontoxic High Temperature Resistant Hydrogels, Thomas P. Schuman, Baujun Bai, Buddhabhushan Pundlik Salunkhe
Nontoxic High Temperature Resistant Hydrogels, Thomas P. Schuman, Baujun Bai, Buddhabhushan Pundlik Salunkhe
Patents
Compositions of swellable non-toxic hydro gels and their use in conformance control are described herein. More specifically, the present invention generally relates to the hydro gels compositions that can be used to treat the oil reservoirs having high temperature and high salinity conditions. The compositions generally comprise a plurality of swellable particles having one or more crosslinkers interspersed within a polymer matrix. The compositions can also be used in biomedical, agricultural, fracking and similar applications wherein thermally-stable, nontoxic hydrogels are required.
Re-Assembling Polymer Particle Package For Conformance Control And Fluid Loss Control, Jingyang Pu, Baojun Bai, Thomas P. Schuman
Re-Assembling Polymer Particle Package For Conformance Control And Fluid Loss Control, Jingyang Pu, Baojun Bai, Thomas P. Schuman
Patents
This invention is broadly concerned with compositions and processes for oilfield applications. More specifically, this invention relates to novel polymer constructed packages that, when pumped into a petroleum well, provide tunable characteristics of transformation and delayed self-assembly with each other under reservoir conditions to yield strong, elastic, bulk gel materials. The compositions comprise a polymer, assembling agents, and optional additives used for the re-assembly stage are uniformly-distributed within the initial gel particles. The polymer particle packages absorb water and swell upon exposure to water, thus exposing the "assembling agents" that enable re-assembly. Both swelling and re-assembly are proportionally controlled via …
Re-Crosslinking Particle Gel For Co2 Compliance Control And Co2 Filtration Blocking, Yifu Long, Baojun Bai, Thomas P. Schuman
Re-Crosslinking Particle Gel For Co2 Compliance Control And Co2 Filtration Blocking, Yifu Long, Baojun Bai, Thomas P. Schuman
Patents
The present invention generally relates to the composition of particle gels for CO2 - EOR and CO2 storage . More particularly , CO2 resistant particle gels are provided that can re - crosslink at subterranean conditions . These particle gels can be deployed to improve the conformance of CO , flooding , CO , huff - puff , or Water - Alternative - Gas ( WAG ) . The applications may also involve CO2 storage , such as the blocking of CO2 leakage and similar CO2 processing .
Fiber Assisted Re-Cross-Linkable Polymer Gel And Preformed Particle Gels For Fluid Loss And Conformance Control, Baojun Bai, Ze Wang, Zhe Sun, Jingyang Pu, Thomas P. Schuman
Fiber Assisted Re-Cross-Linkable Polymer Gel And Preformed Particle Gels For Fluid Loss And Conformance Control, Baojun Bai, Ze Wang, Zhe Sun, Jingyang Pu, Thomas P. Schuman
Patents
Described herein are compositions useful for controlling fluid flow, for example in a target zone of a subterranean environment, and methods of forming and using the same. The composition generally comprises a quantity of fibers and a quantity of swellable particles, which may be dispersed in a carrier fluid. The composition may be synthesized in the form of a bulk gel or may be gelatinated during use. The fibers in the compositions provide improved performance as compared to prior PPG and RPPG particle containing compositions. Specifically, the compositions reinforce the re-cross-linked/re-associated hydrogel plug in underground features and support proper rehydration …