Shear ram type blowout preventer

An angle-cut shear ram blowout preventer system to be used over a well when drilling for hydrocarbons through subterranean geological formations, during a blowout, the angle-cut shear ram blowout preventer system is configured to simultaneously sever a heavy wall drill pipe in the well and seal the well once the heavy wall drill pipe is severed without requiring additional downhole tools, the angle-cut shear ram blowout preventer system is installed on a blowout protector housing having a through bore, the through bore containing the heavy wall drill pipe, the heavy wall drill pipe extending between the well and a surface, the angle-cut shear ram blowout preventer system comprising:

• a. a ram housing with a ram housing bore, wherein the ram housing is secured to the blowout protector housing, and wherein the ram housing bore intersects with the through bore;
• b. a first ram cylinder pressure housing secured to the ram housing;
• c. a first piston in the first ram cylinder pressure housing connected to a common rod longitudinally disposed in the first ram cylinder pressure housing, wherein the first piston is aligned with the ram housing bore;
• d. a second ram cylinder pressure housing secured to the first ram cylinder pressure housing, wherein the second ram cylinder pressure housing is fluidly connected to the first ram cylinder pressure housing;
• e. a second piston in the second ram cylinder pressure housing, wherein the second piston is longitudinally connected to the common rod;
• wherein the first piston, the second piston or both the first piston and the second piston are fluidly connected to a hydraulic pressure source or a pneumatic pressure source, and wherein the common rod is disposed, at least partially within the first ram cylinder pressure housing, the second ram cylinder pressure housing or both the first ram cylinder pressure housing and the second ram cylinder pressure housing, the common rod moveable from a retracted position to an extended position in the ram housing bore;
• f. at least one non-rotating rod disposed in the first ram cylinder pressure housing, the second ram cylinder pressure housing or both the first ram cylinder pressure housing and the second ram cylinder pressure housing;
• and
• g. an angle-cut shear ram connected to the common rod, wherein the angle-cut shear ram comprises:
• (i) a body engaging the common rod;
• and
• (ii) a taper with a cutting edge formed on the body opposite the common rod;
• and
• wherein the angle-cut shear ram is adapted to extend the taper from the ram housing bore into the through bore to sever the heavy wall drill pipe as pressure is applied to the first piston and the second piston from the hydraulic pressure source or the pneumatic pressure source, and extend at least a portion of the body into the through bore creating a through bore seal in the through bore with at least the portion of the body after the heavy wall drill pipe is severed by the taper.