  We observed the Galactic black hole X-ray binary V4641 Sgr with the high
resolution transmission gratings on Chandra during the source's 2020 outburst.
Over two epochs of Chandra gratings observations, we see numerous highly
ionized metal lines, superimposed on a hot, disc-dominated X-ray continuum. The
measured inner disc temperatures and luminosities imply an unfeasibly small
inner disc radius, such that we suggest that the central engine of V4641 Sgr is
obscured, and we are viewing scattered X-rays. We find that the emission lines
in the Chandra spectra cannot be constrained by a single photoionized model,
instead finding that two separate photoionized model components are required,
one to reproduce the iron lines and a second for the other metals. We compare
the observed X-ray spectra of V4641 Sgr to optical studies during previous
outbursts of the source, suggesting that the lines originate in an accretion
disc wind, potentially with a spherical geometry.
