Oilex's Canning ground is closer to Port Hedland than to Broome. Check out the map in this Oilex release. Oilex have the Southern sector of the Canning Basin (Wallal Cattle Station is near the coast)...... whereas BURU Energy have the Northern section (Ungani Oil find) closer to Broome.
Read this OEX Release from 5 Sept 2014 ( see Page 8 - Map of Tenements) :
http://www.asx.com.au/asxpdf/20140905/pdf/42s0sqk0vvq3p1.pdf
If the link to pdf doesn't work, you can get there by accessing the PDF releases on thier ASX page:
http://www.asx.com.au/asx/research/companyInfo.do?by=asxCode&asxCode=oex