Geophysical Journal International
Geophys. J. Int. (2014) 197, 1270
Advance Access publication 2014 March 11
doi: 10.1093/gji/ggu060
Erratum: Invasion of drilling mud into gas-hydrate-bearing
sediments. Part I: effect of drilling mud properties
Fulong Ning,1,2 Keni Zhang,3,4 Nengyou Wu,2 Ling Zhang,1 Gang Li,2 Guosheng Jiang,1
Yibing Yu,1 Li Liu1 and Yinghong Qin1
1 Faculty
of Engineering, China University of Geosciences, Wuhan, Hubei 430074, China. E-mail: [email protected]
Center for Gas Hydrate Research, Chinese Academy of Sciences, Guangzhou 510640, China
3 Earth System Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
4 College of Water Sciences, Beijing Normal University, Beijing 100875, China
2 Guangzhou
[Ning, F.L. et al., 2013. Invasion of drilling mud into gas-hydratebearing sediments. Part I: effect of drilling mud properties, Geophys.
J. Int., 193, 1370–1384.]
We made several mistakes in the paper. On page 1373, line 5, we
missed out one word ‘average’ in sentence ‘The geothermal gradient
at borehole SH7 was 43.2 ◦ C km−1 and the sea bottom temperature
at the site was about 3.5 ◦ C (Li et al. 2010).’ The best is ‘The average geothermal gradient at borehole SH7 was 43.2 ◦ C km−1 and
the sea bottom temperature at the site was about 3.5 ◦ C (Li et al.
2010).’ And in the following sentence ‘The temperature and pressure at the thin layer were calculated to be 13.74 ◦ C and 13.2 MPa,
respectively, which is within the stability field of hydrate.’, we also
miss out the words ‘from in situ measurements’, the best is ‘The
temperature and pressure at the thin layer were calculated from in
situ measurements to be 13.74 ◦ C and 13.2 MPa, respectively, which
is within the stability field of hydrate.’
1270
C
And another obvious mistake in the paper is line 12 of page
1378, Rwshal and Rwdeep should be Rtshal and Rtdeep in the sentence
‘The calculated values of Rwshal and Rwdeep are 2.21 and 2.06 .m,
respectively.’ That is to say, the right sentence is ‘The calculated
values of Rtshal and Rtdeep are 2.21 and 2.06 .m, respectively.’
We apologize to the readers of Geophysical Journal International
for the inconvenience caused.
REFERENCE
Li, G., Moridis, G.J., Zhang, K. & Li, X.S., 2010. Evaluation of gas production potential from marine gas hydrate deposits in Shenhu area of South
China Sea, Energy Fuels, 24, 6018–6033.
The Authors 2014. Published by Oxford University Press on behalf of The Royal Astronomical Society.