Temperature responsive fracturing

A method of fracturing a well, the method comprising:

• disposing within the well at least a first temperature responsive device and a second temperature responsive device, wherein:
• the first temperature responsive device comprises a trigger circuit configured to establish fluid communication through a casing of the well responsive to a f downhole temperature above a first threshold following a first predetermined number of downhole temperature cycles having a first predetermined time period;
• and
• the second temperature responsive device comprises a second trigger circuit configured to establish fluid communication through the casing of the well responsive to detection of a second downhole temperature above a second threshold following a second predetermined number of downhole temperature cycles having a second predetermined time period;
• pumping a first frac stage, thereby lowering the downhole temperatures for at least the first predetermined time period, the lowering downhole temperatures for the first predetermined period temperature being detected by each of the trigger circuits;
• stopping pumping of the first frac stage, thereby allowing the downhole temperatures to increase, the increased temperatures being detected by each of the trigger circuits;
• pumping a second frac stage, thereby lowering downhole temperatures for at least the second predetermined time period, the lowering downhole temperatures being detected by each of the trigger circuits;
• and
• stopping pumping of the second frac stage, thereby allowing the downhole temperatures to increase, the increased temperatures being detected by each of the trigger circuits;
• wherein the first temperature responsive device is configured to establish fluid communication through the casing upon detecting the first predetermined number of temperature cycles associated with the first frac stage and the first downhole temperature exceeding the first threshold;
• and
• wherein the second temperature responsive device is configured to establish fluid communication through the casing upon detecting the second predetermined number of temperature cycles associated with the second frac stage and the second downhole temperature exceeding the second threshold.