Time-controlled cable-head cutter for line conveyed tools

A wireline cable cutting tool, comprising:

• a housing system comprising a fishing neck and a wireline cable cutter at a housing system first end and a wireline connection housing at a housing system second end;
• a mandrel system comprising a cutter press at a mandrel system first end and a wireline cable termination at a mandrel system second end;
• a first triggering mechanism configured to communicate with the mandrel system;
• a second triggering mechanism configured to communicate with the mandrel system;
• a pressure piston assembly comprising a restrictor orifice and one or more check valves;
• a first biasing element configured to communicate with the pressure piston assembly;
• and
• a second biasing element configured to communicate with the second triggering mechanism;
• wherein the pressure piston assembly configured to communicate with the first triggering mechanism;
• wherein the cutter press is configured to communicate with the wireline cable cutter;
• having a wireline cable extending through an axially-centered channel of the fishing neck, cable cutter, and mandrel system and terminating at the wireline cable termination at the mandrel system second end;
• wherein the second triggering mechanism is activated by a first tensile load applied to the wireline cable;
• wherein the first triggering mechanism is activated by a second tensile load applied to the wireline cable;
• wherein the second tensile load is greater than the first tensile load;
• wherein the wireline cable cutter is activated by a third tensile load applied to the wireline cable;
• and
• wherein the third tensile load is greater than the second tensile load.

A wireline cable cutting tool, comprising:

• a housing system comprising a fishing neck and a wireline cable cutter at a housing system first end and a wireline connection housing at a housing system second end;
• a mandrel system comprising a cutter press at a mandrel system first end and a wireline cable termination at a mandrel system second end;
• a first triggering mechanism configured to communicate with the mandrel system;
• a second triggering mechanism configured to communicate with the mandrel system;
• a pressure piston assembly comprising a restrictor orifice and one or more check valves;
• a first biasing element configured to communicate with the pressure piston assembly;
• and
• a second biasing element configured to communicate with the second triggering mechanism;
• wherein the pressure piston assembly is configured to communicate with the first triggering mechanism;
• wherein the cutter press is configured to communicate with the wireline cable cutter;
• having a wireline cable extending through an axially-centered channel of the fishing neck, cable cutter, and mandrel system and terminating at the wireline cable termination at the mandrel system second end;
• wherein the second triggering mechanism is activated by a first tensile load applied to the wireline cable;
• wherein the first triggering mechanism is activated by a second tensile load applied to the wireline cable;
• wherein the second tensile load is greater than the first tensile load;
• wherein the wireline cable cutter is activated by a third tensile load applied to the wireline cable;
• and
• wherein the third tensile load is greater than the second tensile load;
• and
• wherein the pressure piston assembly is configured to delay activation of the wireline cable cutter after the third tensile load has been applied to the wireline cable.