MDX drilldown Year - Site - Well

Question

Our DW has one fact table (with granularity of a day):
- FactGas (SiteKey, WellKey, DateKey, measures,,,,,,,)
And three dimensions:
 - Site (SiteKey, SiteName)
 - Well (WellKey, WellName)
 - Date (DateKey, DateName, Year, YearName, Quarter etc)
With the DW being updated using CDC and SSIS.
Our OLAP cube is created and we are writing MDX scripts for analysis of our data. 
However, we are unable to create a script which displays a drilldown showing Year (Month, Week, Day) - Site (Site Name) - Well (Well Name) - Measures.
Also, there is a one-to-many relationship between Site and Well in the FactGas table.
For example, we need to view our measures
by Date, Site and Well within the cube browser.
Something similar to below where we have year - month - week - date - measures on columns and we can drilldown in to the data

Answer 1

Could you please make sure below points are taken care in design,
*Go to dimension usage and check the relationship. Check site, well and date dimensions are mapped with regular relationship. Now you can check "measures by
Date, Site and Well within the cube browser."
*In the Date dimension build hierarchy for Year->Month->Week->Day. Go to attribute relationship
tab and build relationship: Day->Week->Month->Year
*When you use the hierarchy from date dimension now you should be able to drill down "Year
(Month, Week, Day) - Site (Site Name) - Well (Well Name) - Measures." 
May be you have considered above points in your design still I have put them if you have not.
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