You can also pray to the Arch Angels as some work specifically to help clear the energy field. I often call on Arch Angel Michael to come to protect me or take shadow entities that may be causing me trouble. Archangel Michael has assisted me in removing two family demons and one more that was attacking me in my dream space as well as a line of trauma that looked like a sliver if metal going through my chakra when I would meditate on it. It took over a year till I finally was able to identify it and confidently called on the archangels to have it removed. Here is a great resource about them.
http://foreverconscious.com/getting-to-know-your-spirit-team