I am male/22; when I masterbate I can control how long I last, but with intercourse I cannot last long (last 1 minute). However, my refractory period can be from 0-3 minutes and I can go consecutivly 2-3 times. 1- Is there a reason why I can last longer during masturbation and not during intercourse? And what can I do about it. 2- Is it normal and healthy to go consecutively?

1 - When masturbating, you control friction, timing, pressure, etc. During sex, these things are under less control.

2 - The refractory period you experience is extremely swift. Does the erection completely subside and then "pop back up" or are you capable of continuing while semi-erect?

I agree with Cats, but I also think the feeling is just different when you're with another person. Sure I can masturbate and reach 'the goal' but another person's body/hands/mouth will heighten the sensations.

Being multi orgasmic is a great thing and nothing to be worried about.
Be sure to urinate after you are done having sex to clear your urethra.It ensures good penile health.
There are exercises you can do to increase your staying power.
Below is a link that will help you.
Kegel Exercise Techniques For Men (http://www.biggerloads.com/penis-size/kegels-men.html)