Internal bidirectional tubing plug

A method for removing internal components from an internal bidirectional tubing plug installed in a tubing string within a well comprising:

• pumping fluid into the tubing string to fill the area above an internal bidirectional tubing plug installing in the tubing string,
• applying hydraulic pressure in an upper area of the plug causing the hydraulic pressure to act through a fluid path provided in the cork assembly of the plug and causing the cork to fail in tension at a recess provided in the cork,
• continuing to apply hydraulic pressure on the upper area of the plug to force the lower portion of the failed plug and a bottom piston out of the body of the plug,
• continuing to apply hydraulic pressure on the upper area of the plug to force out of the body sequentially the keystone petal, the remaining petals, the nut with attached upper portion of the failed cork, and the upper piston.

A method of assembling an internal bidirectional tubing plug for installing in a tubing string within a well comprising:

• inserting a nut into a nut socket provided on a center post of an assembly device supported on a base plate of the assembly device so that slots provided in the nut face up,
• placing the body of the plug over the post and is lowering the body down so that it rests on the base plate,
• sequentially inserting the four identical petals and the fifth and sixth petals through the bottom of the body until the top of each petal rests on the top of the post of the assembly device and pushing each petal outward until its back is in contact with the petal recess of the body and its upper and lower edges are in contact with the upper and lower lips, respectively, of the body so that the four identical petals are adjacent to each other with the fifth and sixth petals on either side and adjacent to the four identical petals,
• inserting the keystone petal through the bottom of the body until the top of the keystone petal rests on the top of the post of the assembly device and pushing the keystone petal outward until its back is in contact with the petal recess of the body so that the keystone petal is located between the fifth and sixth petal and a hole is formed in the middle of the petals,
• inserting a cork through the bottom of the body and through the hole formed in the middle of the petals until the threads of the cork engage the threads of the nut,
• rotating the cork until the bottom of the cork is even with the bottoms of the petals,
• removing the body from the assembly device and placing the top of the body on a flat surface,
• attaching a lower piston to the bottoms of the petals and the cork, and
• rotating the body 180 degrees and attaching an upper piston to the tops of the petals.