Patent ID: 8381480

Claim:
An oil derrick with a forward or front end, an aft or back end, a starboard or right side, and a port or left side, comprising: a derrick tower, where: the derrick tower has four legs: a back/left leg, a back/right leg, a front/left leg, and a front/right leg; the derrick tower has a back face extending between the back/left leg and the back/right leg, where the back face is a vertical face; the derrick tower has a right face extending between the back/right leg and the front/right leg, where the right face is a vertical face; the derrick tower has a left face extending between the back/left leg and the front/left leg, where the left face has a top and a bottom and where the left face at least partially angles toward the right side such that the top of the left face is closer to the right face than the bottom of the left face; and the derrick tower has a front face extending between the front/left leg and the front/right leg, where the front face has a top and a bottom and where the front face at least partially angles toward the back side such that the top of the front face is closer to the back face than the bottom of the front face; and a well center line located closer to the back/right leg than to the back/left leg, the front/right leg, or the front/left leg.