SQL 2012 :: Design A Table To Hold Filters For Selection Criteria?

I have an ordering database with several tables that store data of orders belonging to a wide variety of clients. There is a generic report that I need to run which outputs the same data elements. However the criteria to select these orders will vary widely between each client. For e.g.

i) for client# 1 it could be all orders that are still open after 30 days of placing an order

(
OrderStatus = 'Open'
AND
GetDate() - OrderCreationDate >= 30
)

ii) for client# 2 it could be all orders that have been completed 60 days or earlier

(
OrderStatus = 'Completed'
AND
GetDate() - OrderCompletedDate >= 60
)

iii) for client# 3 it could be a combination of different things (all orders in West Region that are in hold status for more than 10 days + all orders in Eastern Region that are in shipping and are expected to be delivered in the next 2 days + all completed orders for the rest of the regions).

(
OrderRegion = 'West'
AND
OrderStatus = 'Hold'
AND
GetDate() - OrderHoldDate >= 10

[code].....

I want to have a stored procedure that selects all data and dynamically attach the where condition at the end for filtering. This way I wouldn't have to worry about any additions/changes that are made to the selection criteria. I can build an interface for admins who can use the UI to maintain the selection criteria and not worry about any code changes to accommodate it. I would like to design a table that holds this criteria. At this point in time, I am thinking of using key value pairs (Column Name, Column Value) but I am not sure how to implement multiple logical operators.