Research and Development Technical Section

Dear all, 

we have our proprietary TCT mechanical cutter for downhole tubing / drill pipe / retrievable packer recovery, which has a 2-1/8" OD that is for 2-7/8" pipe cutting. As we are adapting to bigger OD / cutting bigger pipes, would anyone help to refer us to a mechanical design guide such as: if diameter changes within the tool body how should transitions be designed (e.g. length and angle of chamfers). If there is no general guide maybe there is a company developed guide (for example previously we used a design guide from Exxon for Stabilizers).

Alternative we can make a design review with someone who knows how to design such things then happy to hear recommendations. 

Kind regards,

Junying Chang

"2-1/8" OD" - did you mean to write "ID"?

Dear all, 

we have our proprietary TCT mechanical cutter for downhole tubing / drill pipe / retrievable packer recovery, which has a 2-1/8" OD that is for 2-7/8" pipe cutting. As we are adapting to bigger OD / cutting bigger pipes, would anyone help to refer us to a mechanical design guide such as: if diameter changes within the tool body how should transitions be designed (e.g. length and angle of chamfers). If there is no general guide maybe there is a company developed guide (for example previously we used a design guide from Exxon for Stabilizers).

Alternative we can make a design review with someone who knows how to design such things then happy to hear recommendations. 

Kind regards,

Junying Chang

Nope, TCT Cutter's OD is 2-1/8". It runs into and cuts 2-7/8" tubing. 

"2-1/8" OD" - did you mean to write "ID"?

Dear all, 

we have our proprietary TCT mechanical cutter for downhole tubing / drill pipe / retrievable packer recovery, which has a 2-1/8" OD that is for 2-7/8" pipe cutting. As we are adapting to bigger OD / cutting bigger pipes, would anyone help to refer us to a mechanical design guide such as: if diameter changes within the tool body how should transitions be designed (e.g. length and angle of chamfers). If there is no general guide maybe there is a company developed guide (for example previously we used a design guide from Exxon for Stabilizers).

Alternative we can make a design review with someone who knows how to design such things then happy to hear recommendations. 

Kind regards,

Junying Chang

Dear all, 

we have our proprietary TCT mechanical cutter for downhole tubing / drill pipe / retrievable packer recovery, which has a 2-1/8" OD that is for 2-7/8" pipe cutting. As we are adapting to bigger OD / cutting bigger pipes, would anyone help to refer us to a mechanical design guide such as: if diameter changes within the tool body how should transitions be designed (e.g. length and angle of chamfers). If there is no general guide maybe there is a company developed guide (for example previously we used a design guide from Exxon for Stabilizers).

Alternative we can make a design review with someone who knows how to design such things then happy to hear recommendations. 

Kind regards,

Junying Chang

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