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Keywords: precipitation
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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, November 18–19, 2019
Paper Number: URTEC-198323-MS
... ABSTRACT The objective of this paper is to study and mitigate the calcium sulfate (CaSO 4 ) precipitation in proppant fracturing of unconventional gas wells in a carbonate formation. With sulfate content in the source water ranging from 500 to 2,000 ppm, and with up to 200,000 ppm total...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, November 18–19, 2019
Paper Number: URTEC-198301-MS
... Inhibition of smectite clay swelling by precipitation of Mg(OH) 2 between clay layers and on the surface of clays is discussed in this paper. The precipitation was carried out using different Mg salts (MgCl 2 ·6H 2 O, Mg(NO 3 ) 2 ·6H 2 O Mg(SO 4 ) 2 ·8H 2 O and NaOH as a base. The change...

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