System and method for controlled flowback

A downhole acquisition tool, comprising:

• a formation testing module comprising a fluid chamber configured to store a fluid and to receive a flowback fluid, wherein the fluid is substantially free of solids;
• a piston disposed within the fluid chamber;
• a first conduit fluidly coupled to the fluid chamber and extending from a flowback conduit and an outlet of the formation testing module, wherein the first conduit is configured to receive the flowback fluid exiting from a fracture within a geological formation, and wherein the flowback conduit is fluidly coupled to the fracture such that the flowback conduit receives and directs the flowback fluid to the first conduit;
• a first flow control device positioned between an inlet of the fluid chamber and the flowback conduit, wherein the first flow control device is configured to enable flow of the flowback fluid into the fluid chamber;
• and wherein the piston is configured to move toward a fluid chamber outlet to displace the fluid in response to a flow of the flowback fluid into the fluid chamber;
• and
• a sensor disposed downstream of the fluid chamber outlet, wherein the sensor is configured to detect a property of the fluid, and wherein the property of the fluid is indicative of a horizontal stress of the formation.

A method, comprising;

• positioning a downhole tool into a wellbore within a geological formation;
• injecting a first fluid into a region of the geological formation isolated using a plurality of packers of the downhole tool, wherein the first fluid is configured to create a fracture within the isolated region of the geological formation;
• determining a horizontal stress of the formation, wherein determining the minimum horizontal stress of the formation comprises:
• receiving a flowback flow of the first fluid from the fracture in the geological formation, wherein the downhole tool comprises a flowback conduit fluidly coupled to the fracture and configured to receive the flowback flow of the first fluid;
• directing the flowback flow to a fluid chamber disposed within a formation testing module of the downhole tool, wherein the fluid chamber comprises a piston and a second fluid, wherein the second fluid is substantially free of solids;
• displacing a volume of the second fluid from the fluid chamber in response to the flowback flow of the first fluid into the fluid chamber, wherein the flowback flow is configured to move the piston in a direction toward a port of the fluid chamber and to displace the second fluid through the port;
• and
• measuring a property of the second fluid downstream of the fluid chamber using a sensor positioned along a flow path of the second fluid, wherein the property of the second fluid is representative of the horizontal stress of the formation.