Systems and methods for real-time well surveillance

A method comprising, by a computer system:

• receiving, in real-time, a volumetric flow rate and a mud weight produced by sensors in relation to a well;
• receiving non-real-time data in relation to the well;
• identifying at least one of a laminar flow, a transitional flow, and a turbulent flow of a fluid in the well based, at least in part, on the mud weight;
• responsive to the identifying, determining a fanning friction factor;
• determining an equivalent circulating density associated with each of a plurality of measured depths in the well based, at least in part, on the fanning friction factor, the volumetric flow rate, the mud weight, and the non-real-time data;
• and
• for each of the plurality of measured depths, facilitating a real-time display of the equivalent circulating density, wherein the real-time display of the equivalent circulating density comprises information relating to the equivalent circulating density corresponding to real-time measured depths in the well.

A system comprising a processor and memory, wherein the processor and memory in combination are operable to implement a method comprising:

• receiving, in real-time, a volumetric flow rate and a mud weight produced by sensors in relation to a well;
• receiving non-real-time data in relation to the well;
• identifying at least one of a laminar flow, a transitional flow, and a turbulent flow of a fluid in the well based, at least in part, on the mud weight;
• responsive to the identifying, determining a fanning friction factor;
• determining an equivalent circulating density associated with each of a plurality of measured depths in the well based, at least in part, on the fanning friction factor, the volumetric flow rate, the mud weight, and the non-real-time data;
• and
• for each of the plurality of measured depths, facilitating a real-time display of the equivalent circulating density, wherein the real-time display of the equivalent circulating density comprises information relating to the equivalent circulating density corresponding to real-time measured depths in the well.

A computer-program product comprising a non-transitory computer-usable medium having a computer-readable program code embodied therein, the computer-readable program code adapted to be executed to implement a method comprising:

• receiving, in real-time, a volumetric flow rate and a mud weight produced by sensors in relation to a well;
• receiving non-real-time data in relation to the well;
• identifying at least one of a laminar flow, a transitional flow, and a turbulent flow of a fluid in the well based, at least in part, on the mud weight;
• responsive to the identifying, determining a fanning friction factor;
• determining an equivalent circulating density associated with each of a plurality of measured depths in the well based, at least in part, on the fanning friction factor, the volumetric flow rate, the mud weight, and the non-real-time data;
• and
• for each of the plurality of measured depths, facilitating a real-time display of the equivalent circulating density, wherein the real-time display of the equivalent circulating density comprises information relating to the equivalent circulating density corresponding to real-time measured depths in the well.