Systems and methods for drilling geothermal wells

A geothermal well, comprising:

• a well comprising:
• a first well portion, wherein the first well portion extends at an angle within 20 degrees from vertical, and has a first diameter, and
• a second well portion, wherein a top of the second well portion is connected to a bottom of the first well portion, and the second well portion has a second diameter, wherein the first diameter is greater than the second diameter;
• a plurality of sidetrack wells, each extending from a first place on the first well portion or the second well portion to a second place on the second well portion, and each defining a fluid pathway between the first place and the second place, wherein the second well portion and the plurality of sidetrack wells extend into a thermally active formation comprising a plurality of fractures in a region;
• a first casing positioned in at least the first well portion or the second well portion;
• and
• a second casing forming an annulus between the first casing and the second casing, wherein the well is adapted to receive a fluid therein allowing flow through the first casing to a bottom of the well, then through one or more of the plurality of sidetrack wells and one or more fractures of the plurality of fractures, and then back to a surface location through the annulus.

A method of generating energy comprising:

• drilling a well, the well comprising:
• a first well portion, wherein the first well portion extends at an angle within 20 degrees from vertical, and has a first diameter, and
• a second well portion, wherein a top of the second well portion is connected to a bottom of the first well portion, and the second well portion has a second diameter, wherein the first diameter is greater than the second diameter;
• at least one sidetrack well extending from a first place on the first well portion or the second well portion to a second place on the second well portion, and defining a first fluid pathway between the first place and the second place;
• a first casing positioned in at least the first well portion or the second well portion;
• and
• a second casing forming an annulus between the first casing and the second casing, wherein the well is adapted to receive a fluid therein allowing flow through a second fluid pathway;
• fracturing a thermally active formation such that the second well portion and at least one sidetrack well extend into a region with a plurality of fractures;
• pumping the fluid through the first and second fluid pathways such that the fluid travels down through the first casing to a bottom of the well, then up through of the at least one sidetrack well and one or more fractures of the plurality of fractures, and then back to a surface location through the annulus;
• and
• generating energy using a generator adapted to receive heated fluid exiting the annulus.