Instrumenting unconventional wells for real time in situ frac height determination, reservoir fluid movement, production monitoring and well integrity in fractured stages

A system for deploying sensors throughout a vertical section and a horizontal section of an unconventional well, comprising:

• a) a first downhole tool configured to be placed in the horizontal section of the unconventional well, the first downhole tool operative to acquire data downhole related to a predetermined condition characteristic downhole, the first downhole tool comprising:
• i) a mandrel adapted to be disposed downhole, the mandrel defining a housing and comprising a set of extendable arms;
• ii) a conductivity sensor mounted on a first predetermined subset of the set of extendable arms, the conductivity sensor configured to collect resistivity data from a reservoir being frac'ed when the extendable arm to which the conductivity sensor is mounted extends to place the conductivity sensor into physical contact with a reservoir accessible via the unconventional well;
• iii) a strain sensor mounted on a second predetermined subset of the set of extendable arms, the strain sensor operative to evaluate frac height;
• iv) a navigation package comprising an accelerometer, the navigation package adapted to determine a location of the extendable arms in a perpendicular axis of the well in relation to a zero rotation point determined by the accelerometer assembled in an X, Y, and Z axis of the well;
• v) a real time communications short hop data communicator;
• vi) a data communicator operatively in communication with the conductivity sensor, the strain sensor, the navigation package, and the real time communications short hop data communicator;
• and
• vii) a downhole power source operatively in communication with the short hop data communicator and the data communicator;
• b) a second downhole tool configured to be placed in the vertical section of the well, the first downhole tool and the second downhole tool adapted to operate substantially simultaneously, the second downhole tool operative to acquire data downhole related to a predetermined condition characteristic downhole, the second downhole tool comprising:
• i) a mandrel adapted to be disposed downhole, the mandrel defining a housing and comprising a set of extendable arms;
• ii) a set of sensors, comprising:
• (1) a conductivity sensor mounted on a first predetermined subset of the set of movable extendable arms, the conductivity sensor configured to collect resistivity data from the reservoir being frac'ed when the extendable arm to which the conductivity sensor is mounted extends to place the conductivity sensor into physical contact with a reservoir accessible via the unconventional well;
• and
• (2) a strain sensor operative to monitor deformation of a well formation during a fracture operation to determine the height and width of the frac;
• iii) a navigation package comprising an accelerometer, the navigation package adapted to determine a location of the extendable arms in a perpendicular axis of the well in relation to a zero rotation point determined by the accelerometer assembled in the X, Y, and Z axis of the well;
• iv) a real time communications short hop data communicator;
• v) a data communicator operatively in communication with the conductivity sensor, the strain sensor, the navigation package, and the real time communications short hop data communicator;
• vi) a downhole power source operatively in communication with the short hop data communicator and the data communicator;
• and
• c) a surface system configured to collect and process data obtained in the well, the surface system operatively in communication with the first downhole tool and the second downhole tool.