An oilfield apparatus has a swellable elastomeric composition that
includes a swellable elastomer and one or more nanosensors dispersed
therein. An oilfield assembly for exploring for, drilling for, testing
for, or producing hydrocarbons includes various oilfield elements such as
tubing, jointed pipe, sucker rods, submersible pump motor protector bags,
packer elements, blow out preventer elements, zonal isolation tool
elements, etc; and one or more of the oilfield elements has a swellable
elastomeric composition that includes a swellable elastomer and one or
more nanosensors dispersed therein. A method of selecting one or more
oilfield elements has a component of an elastomeric composition that
includes a swellable elastomer and one or more nanosensors dispersed
therein; and a method of using the one or more oilfield elements in an
oilfield operation, thus exposing the oilfield element to an oilfield
environment.