How tricone drill bits work - video

[Frank S]

Hi Frank,
Thanks for the background on Rubin Baker, I didn't know that.
when you mentoned BJ services i remembered a cementing company who were always around on jobs i worked on.
they were https://www.bjservices.com/our-compa.../the-bj-legacy
and not connected to Baker Hughes.
The only direct involvement i have had with Baker Hughes was in writing a safety report on the use and implications of using ROVs when interfacing with assets. The guy was called David Bailey, apparently he wasn't the Royal photographer- David Bailey.

Trying to sort out who owned what or who was in bed with whom can be a bit daunting in the late 70's anyone with a few bucks in his pockets or someone who was a good pitch man could could raise money to start up a small drilling company, procure a couple of drill leases cobble together a rig or platform for land based or sea based, and sink a bit in the ground. Make a couple of significant strikes and all of the big names would clamor to hang their sign on the location. just as long as you used their products THen the 80's came along and many of the big names started merging with one another or certain divisions of these big names would join with this company or that company Parts of Slumberger was prt of Halliburton parts of Halliburton was in bed with Baker Hughes Small companies were bought up by famous names but retained their logo so you might buy pipe dope you thought was made by one company when in fact it was made by someone no one had ever heard of or vice versa. Call out Halliburton to cement your surface casing and a Big blue Slumburger rig would show up and you didn't even know that they did cementing for surface Sandia logging services would have a logging truck on location but the geologist would be wearing Weltex coveralls
I reverse engineered an annular blowout preventer made and sold several tested and certified for 3000 PSI the machine shop that was doing my machining started making them under the diamond name not long after that you could find some with the name of Reagan embossed in them Reagan was the brand name I had reversed engineered from and had made several cost cutting and strengthening improvements to their design. I felt it flattering to see that Reagan had incorporated naby of the design changes I had done but a bit disconcerting that they were touting them as 5000 PSI rated. When I had had mine tested they showed a high leakage percentage at pressures that high but zero leakage at 4000 PSI hence the certification of 3000#. To be fair though it could have been that a different bladder may have been used to achieve the 5000# figure. Structurally my units could take many times that pressure before noticeable stress signs. In a test with both ends capped the top and bottom did not begin to deform and allow the o ring gasket to rupture until 15,000 PSI and that may have been due to an under or over torqued bolt.