A self-gating membrane for reservoir protection based on irreversible thermoresponsive bentonite layer structures

Inspired by the well-known gating behavior of artificial 2D structures, this paper attempts to modify natural bentonite with natural layered structures. Specifically, an irreversible thermoresponsive composite within the tolerance of the layer limitation was produced with atom transfer radical polym...

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Bibliographic Details
Published inApplied clay science Vol. 211; p. 106175
Main Authors Dong, Wenxin, Pu, Xiaolin, Zhai, Yufen
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.09.2021
Subjects
Atom transfer radical polymerization
Functional modification
Grafting
Shale reservoir
Water invasion
Shale reservoir
Mt
SI-ATRP
Atom transfer radical polymerization
XRD
Grafting
ATRP
TGA
3DMG
BzMA
HTHP
FTIR
CuAAC
EDX
Functional modification
SEM
GB
PBzMA
Water invasion
OM
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Summary:Inspired by the well-known gating behavior of artificial 2D structures, this paper attempts to modify natural bentonite with natural layered structures. Specifically, an irreversible thermoresponsive composite within the tolerance of the layer limitation was produced with atom transfer radical polymerization (ATRP). Results showed the displacement of grown bentonite (GB), which is a montmorillonite (Mt) rich clay, finitely increased from 10.85 to 21.35 Å with growing benzyl methacrylate (BzMA) monomers. The grown bent exhibited a notable over-temperature gating in the membrane performance, which provided a new reference for natural and engineered systems. Especially, in simulating GB protection on shale with geological temperature, GB membrane exhibited a significant inhibition on experimental core expansion and outstanding improvement on shale mechanics, which was potential for drilling natural gas from hazardous shale reservoir against horrible water invasion. [Display omitted] •Irreversible thermoresponsive membrane was generated from natural bentonite layers.•Atomic transfer radical polymerization (ATRP) was employed to grow bentonite within limited interlayer displacement.•Fabricated grown bentonite (GB) exhibited a notable over-temperature gating in the membrane performance.•GB membrane was an irreversible gating composite capable of protecting shale from water damage.
ISSN:0169-1317
1872-9053
DOI:10.1016/j.clay.2021.106175