Recover files from formatted NTFS/BTRFS partitions

I have a system that was recently reformatted/reinstalled.

However, somebody forgot to check the backups…sigh. Backup drive is a write-off (faked flash drive capacity)

Anyhow, there were two partitions on the harddisk that we're concerned about, one NTFS 30Gb, and one BTRFS 30Gb.

I assume the BTRFS partition is a write-off, since there's no few recovery tools for BTRFS.

With the NTFS drive, the original partition was formatted (in the Windows 7 installer), and Windows installed on top, so the first 15Gb are essentially gone.

I've just made a image of the partition as it currently stands, using dcfldd. I assume that's enough to do a recovery from, as opposed to the whole drive, since I just did a reformat, and re-used the same partition?

Any advice on particular tools to re-enact the recovery? Basically, I'd like to scrub it for any files at all that I can pull.

Opensource tool that work under *nix are preferred, but quite frankly, right now, I'll take anything…lol.

Thanks,
Victor