HYDROPHILIC SUBSTRATE AND METHOD FOR PREPARING HYDROPHILIC SUBSTRATE

    公开(公告)号:US20210372895A1

    公开(公告)日:2021-12-02

    申请号:US17244001

    申请日:2021-04-29

    发明人: Yasuhisa MINAGAWA

    摘要: Provided are hydrophilic substrates provided with a hydrophilic polymer layer having controlled surface uniformity and irregularities, and methods for preparing the hydrophilic substrates. Included are hydrophilic substrates including a substrate having a surface containing at least one group represented by —N(R1)2 or —N(R2)3+ wherein each R1 or R2 is the same or different and represents a hydrogen atom or a substituted or unsubstituted hydrocarbon group optionally containing a hetero atom; and a hydrophilic polymer layer provided on the surface of the substrate.

    Foamed gel treatment fluids and methods of use

    公开(公告)号:US10961429B2

    公开(公告)日:2021-03-30

    申请号:US16337538

    申请日:2016-10-28

    摘要: Certain foamed gel treatment fluids and methods of using the treatment fluids in wellbores penetrating subterranean formations are provided. In one embodiment, the treatment fluids comprise: an aqueous base fluid, a gas, a plurality of particulates, and a plurality of swellable particles each comprising a material having a first monomer, a second monomer, and a third monomer comprising a foamable surfactant. In one embodiment, the methods comprise: preparing a treatment fluid comprising an aqueous base fluid and a swellable particle that comprises a material having a first monomer, a second monomer, and a third monomer comprising a foamable surfactant; blending the treatment fluid with a gas to form a foamed gel; and introducing the foamed gel into a wellbore penetrating at least a portion of a subterranean formation.