Jan 13 (Reuters) - Barclays (L:BARC) global 2016 E&P spending outlook:
* Barclays expects 2016 global E&P spending to decline 15 percent based on survey of 225 companies
* Barclays says global E&P spending decline may be closer to 20 percent if oil prices hold at $40/bbl
* Barclays sees North America E&P spending budgets down 27 percent in 2016
* Barclays says international spending to fall 11 percent with Middle East still the lone source of strength
* Barclays says offshore spending may fall 20-25 percent as IOCs slash exploration budgets, cut frontier programs
* Barclays says online survey shows most North American e&ps expect service costs to fall more than 20 percent in 2016