Bi-directional spring cone in liner hanger system

A method, comprising:

• conveying a liner hanger system downhole into a cased wellbore, the liner hanger system comprising:
• a tubular body;
• a plurality of lower slips mounted along the tubular body;
• a spring cone disposed around the tubular body and fixed to the plurality of lower slips, the spring cone comprising:
• a spring including a plurality of slots;
• a lock ring including a ratchet profile, wherein the lock ring is disposed between a first slot and a second slot of the plurality of slots;
• and
• a cone profile;
• and
• a packer element disposed around the tubular body, below and adjacent the spring cone, the packer element comprising an elastomeric element;
• actuating the plurality of lower slips against the cone profile of the spring cone to create a setting load that forces the plurality of lower slips radially outward into engagement with a casing, and compresses the spring cone;
• and
• transferring the setting load through the spring cone to energize the packer element to seal an annulus between a liner and the casing,
• wherein the lock ring having the ratchet profile prevents the spring cone from moving in an upward direction after compression.

A method of manufacture of a slotted cylindrical spring, comprising:

• dividing a cylinder into a plurality of sections arranged in sequence, a first section of the plurality of sections is disposed between a second section and a third section of the plurality of sections;
• cutting a plurality of slots into each section of the plurality of sections of the cylinder in a slot pattern to form the slotted cylindrical spring;
• and
• disposing a lock ring including a ratchet profile on the first section after cutting the plurality of slots.