Fishbones, electric heaters and proppant to produce oil

A method of producing heavy oil, comprising:

• a) providing a plurality of wellpairs in a heavy oil reservoir laterally separated by a distance D;
• b) each wellpair comprising:
• i) a horizontal production well configured for heating with an electric downhole heater at a first depth at a bottom of a play,
• ii) a horizontal upper well at a second depth above said first depth and parallel to said production well;
• iii) a plurality of open-hole lateral wells at said second depth extending from said upper well or at said first depth extending from said production well, or both,
• iv) each of said lateral wells filled with thermally conductive particles;
• and
• v) said plurality of lateral wells extending towards a nearest wellpair and covering at least 95% of D;
• c) applying electricity to said heater, thereby heating said thermally conductive particles and mobilizing heavy oil;
• and
• d) producing said mobilized heavy oil at said production well in each wellpair.