CPC E21B 43/38 (2013.01) [E21B 21/08 (2013.01); E21B 34/14 (2013.01)] | 20 Claims |
1. An actuator comprising:
a housing defining a volume changeable chamber therein, the volume changeable chamber being divided into:
a first volume changeable subchamber;
a second volume changeable subchamber;
a separator disposed between the first volume changeable subchamber and the second volume changeable subchamber, the separator initially preventing mixing of substances in the first volume changeable subchamber and in the second volume changeable subchambers and at a selected time allowing fluid movement between the first and second volume changeable subchamber wherein the substances are a first fluid in the first volume changeable subchamber and a second fluid in the second volume changeable subchamber, the first and second fluids being miscible to create a volume that is less than a volume of the first fluid plus a volume of the second fluid.
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