PMID- 34578687
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211001
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 11
IP  - 9
DP  - 2021 Sep 12
TI  - Intelligent Temperature-Control of Drilling Fluid in Natural Gas Hydrate 
      Formation by Nano-Silica/Modified n-Alkane Microcapsules.
LID - 10.3390/nano11092370 [doi]
LID - 2370
AB  - Inhibiting hydrate decomposition due to the friction heat generated by the 
      drilling tools is one of the key factors for drilling hydrate formation. Since 
      the existing method based on chemical inhibition technology can only delay the 
      hydrate decomposition rate, a phase-change microcapsule was introduced in this 
      paper to inhibit, by the intelligent control of the drilling fluid temperature, 
      the decomposition of the formation hydrate, which was microencapsulated by 
      modified n-alkane as the core material, and nano-silica was taken as the shell 
      material. Scanning electron microscope (SEM), size distribution, X-ray 
      diffraction (XRD), and Fourier transform infrared spectrometer (FT-IR) were 
      utilized to characterize the structural properties of microcapsules. Differential 
      scanning calorimetry (DSC) spectra displayed that the latent heat was 136.8 J/g 
      in the case of melting enthalpy and 136.4 J/g in the case of solidification 
      enthalpy, with an encapsulation efficiency of 62.6%. In addition, the prepared 
      microcapsules also showed good thermal conductivity and reliability. By 
      comparison, it was also proved that the microcapsules had good compatibility with 
      drilling fluid, which can effectively control the temperature of drilling fluid 
      for the inhibition of hydrate decomposition.
FAU - Zhang, Yubin
AU  - Zhang Y
AUID- ORCID: 0000-0003-3725-2351
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
FAU - Qiu, Zhengsong
AU  - Qiu Z
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
FAU - Mu, Jiaxing
AU  - Mu J
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
FAU - Ma, Yongle
AU  - Ma Y
AD  - Drilling Technology Research and Development Center, Bo-Xing Division of CNPC 
      Offshore Engineering Company Limited, Tianjin 300451, China.
FAU - Zhao, Xin
AU  - Zhao X
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
FAU - Zhong, Hanyi
AU  - Zhong H
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
FAU - Huang, Weian
AU  - Huang W
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
FAU - Guo, Pengfei
AU  - Guo P
AD  - School of Petroleum Engineering, China University of Petroleum (East China), 
      Qingdao 266580, China.
LA  - eng
GR  - National Natural Science Foundation of China (Major Program, 51991363)/Zhengsong 
      Qiu/
GR  - CNPC's Major Science and Technology Projects (ZD2019-184-003)/Zhengsong Qiu/
GR  - National Natural Science Foundation of China (51804331)/Xin Zhao/
GR  - Postgraduate Innovation Projects (YCX2020030)/Yubin Zhang/
PT  - Journal Article
DEP - 20210912
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC8465599
OTO - NOTNLM
OT  - hydrate formation
OT  - intelligent temperature-control
OT  - latent heat performance
OT  - microcapsule
OT  - modified n-alkane
OT  - nano-silica
COIS- The authors declare no conflict of interest.
EDAT- 2021/09/29 06:00
MHDA- 2021/09/29 06:01
PMCR- 2021/09/12
CRDT- 2021/09/28 01:27
PHST- 2021/08/19 00:00 [received]
PHST- 2021/09/07 00:00 [revised]
PHST- 2021/09/10 00:00 [accepted]
PHST- 2021/09/28 01:27 [entrez]
PHST- 2021/09/29 06:00 [pubmed]
PHST- 2021/09/29 06:01 [medline]
PHST- 2021/09/12 00:00 [pmc-release]
AID - nano11092370 [pii]
AID - nanomaterials-11-02370 [pii]
AID - 10.3390/nano11092370 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2021 Sep 12;11(9):2370. doi: 10.3390/nano11092370.