The deal is a streamlined attempt to resume LNG and crude flows, not a resolution of the nuclear dispute. Normalization to pre-crisis levels will take 3-4 months, and even then, output may not reach 80% of normal for months.
Markets are reacting favorably to any move away from military conflict, but this does not mean things get back to normal. The resumption of oil production from wells will take time, and pipeline diversions will remain constant.