國立虎尾科技大學 |

The Effect of Carbon Nanotubes on the Rheology and Mechanical Properties of Lightweight Cements.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	The Effect of Carbon Nanotubes on the Rheology and Mechanical Properties of Lightweight Cements./
Author:	Li, Xin.
Description:	1 online resource (114 pages)
Notes:	Source: Masters Abstracts International, Volume: 57-01.
Contained By:	Masters Abstracts International57-01(E).
Subject:	Petroleum engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9780355516197

The Effect of Carbon Nanotubes on the Rheology and Mechanical Properties of Lightweight Cements.
Li, Xin.

The Effect of Carbon Nanotubes on the Rheology and Mechanical Properties of Lightweight Cements. - 1 online resource (114 pages)

Source: Masters Abstracts International, Volume: 57-01.

Thesis (M.S.)

Includes bibliographical references

Oil wells drilled in weak and fragile formations should be cemented by lightweight cement slurries to avoid downhole fractures caused by heavy slurry and to minimize lost circulation. Conventional cement composite is a strong material with low elasticity due to its brittle nature. Lightweight cement sheath exhibits higher ductility than conventional cement because its air-solid structure is able to tolerate more deformation when downhole stress condition changes. The addition of foam and microspheres into conventional cement introduces higher elasticity, it also reduces the strength properties.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355516197Subjects--Topical Terms:

896906
Petroleum engineering.
Index Terms--Genre/Form:

554714
Electronic books.

The Effect of Carbon Nanotubes on the Rheology and Mechanical Properties of Lightweight Cements.
LDR:03390ntm a2200397Ki 4500 001 908762
005 20180330125242.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9780355516197
035 $a (MiAaPQ)AAI10682589
035 $a (MiAaPQ)utulsa:10259
035 $a AAI10682589
040 $a MiAaPQ $b eng $c MiAaPQ
099 $a TUL $f hyy $c available through World Wide Web
100 1 $a Li, Xin. $3 656295
245 1 4 $a The Effect of Carbon Nanotubes on the Rheology and Mechanical Properties of Lightweight Cements.
264 0 $c 2017
300 $a 1 online resource (114 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 57-01.
500 $a Advisers: Stefan Miska; Nicholas Takach.
502 $a Thesis (M.S.) $c The University of Tulsa $d 2017.
504 $a Includes bibliographical references
520 $a Oil wells drilled in weak and fragile formations should be cemented by lightweight cement slurries to avoid downhole fractures caused by heavy slurry and to minimize lost circulation. Conventional cement composite is a strong material with low elasticity due to its brittle nature. Lightweight cement sheath exhibits higher ductility than conventional cement because its air-solid structure is able to tolerate more deformation when downhole stress condition changes. The addition of foam and microspheres into conventional cement introduces higher elasticity, it also reduces the strength properties.
520 $a In this study, multi-walled carbon nanotubes were employed to compensate for strength reduction caused by foam and microspheres in cement composites. The goal of this study is to evaluate the mechanical properties of CNT reinforced lightweight cements under tri-axial conditions. Rheological properties of various cement systems were measured.
520 $a Compressive strength and Young's modulus of lightweight cements were measured under the confining pressures of 0, 500 psi and 1000 psi. Permeability and porosity tests were conducted on various cement systems. The strength properties of cement specimens were evaluated by their compressive strength and splitting tensile strength. Several failure criteria were applied to describe cement failure mechanism. Young's modulus, ultimate strain capacity and brittleness index were measured and calculated for the analysis of cement elastic properties. A scanning electron microscope was used for the comparison of micro structures among cement systems and prove the bridging mechanism of carbon nanotubes in cement composite.
520 $a As shown in experimental results, the addition of carbon nanotubes improves the strength and elastic properties of various cement systems without significantly affecting their rheological properties. Carbon nanotubes function as nano-bridges and nano-fillers to help reinforce cement composite and plug the mico pores and cracks for hydrocarbon to flow through.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Petroleum engineering. $3 896906
650 4 $a Civil engineering. $3 561339
650 4 $a Mechanical engineering. $3 557493
655 7 $a Electronic books. $2 local $3 554714
690 $a 0765
690 $a 0543
690 $a 0548
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a The University of Tulsa. $b Petroleum Engineering. $3 1179038
773 0 $t Masters Abstracts International $g 57-01(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10682589 $z click for full text (PQDT)