Pleading the blood of Jesus



Is this phrase Biblical? Does this mantra obligate or compel God to grant a  person what they are requesting? What was/is the purpose of the blood? Does pleading the blood give a person some sort of “turbo boost” in their prayer life? My blog article regarding the matter:

http://gospelofrepentance.blogspot.com/2013/11/is-pleading-blood-of-jesus-biblical.html