Intelligent valve systems and methods

An intelligent valve system configured for placement along a main fluid line of a hydraulic fracturing system, wherein the main fluid line defines a primary fluid flow path, the intelligent valve system comprising:

• a bleed down valve system for venting residual pressure from the main fluid line, the bleed down valve system comprising:
• a bleed down block connected to the main fluid line;
• a first bleed down valve coupled to the bleed down block;
• and
• a second bleed down valve coupled to the first bleed down valve, wherein the first bleed down valve and the second bleed down valve define a bleed down fluid flow path that extends approximately perpendicular to the primary fluid flow path.

A method for controlling pressure events at a wellsite, the method comprising the steps of:

• positioning a pressure relief valve system along a main fluid line defining a primary fluid flow path at the wellsite, wherein the pressure relief valve system is configured to release pressure from the main fluid line and comprises:
• a pressure relief block connected to the main fluid line;
• a first pressure relief valve coupled to the pressure relief block;
• and
• a second pressure relief valve coupled to the first pressure relief valve, wherein the first pressure relief valve and the second pressure relief valve define an alternative fluid flow path that extends approximately perpendicular to the primary fluid flow path;
• measuring a pressure level in the pressure relief block;
• comparing the measured pressure level to a predetermined pressure threshold;
• and
• triggering either the first pressure relief valve or the second pressure relief valve to open when the measured pressure level exceeds a predetermined pressure threshold.