Abstract: This disclosure provides methods and apparatus for stimulating a well by using structural reactive material while perforating a well casing and well formation in a well at the same time. A structural reactive material member may be attached to a shaped charge to form a hybrid charge. A detonation signal may be transmitted to the one or more hybrid charges to detonate a main explosive in the shaped charges to generate a jet to perforate the well casing and the well formation, break apart the structural reactive material into reactive material particles, and propel the reactive material particles into the well formation for deflagration in the well formation to stimulate the well.

Abstract: This disclosure provides methods and apparatus for stimulating a well by using structural reactive material while perforating a well casing and well formation in a well at the same time. A structural reactive material member may be attached to a shaped charge to form a hybrid charge. A detonation signal may be transmitted to the one or more hybrid charges to detonate a main explosive in the shaped charges to generate a jet to perforate the well casing and the well formation, break apart the structural reactive material into reactive material particles, and propel the reactive material particles into the well formation for deflagration in the well formation to stimulate the well.

Abstract: A welding device includes a welding torch having an electrode, an oscillation assembly having an oscillation shaft, and a connection member. The welding torch is affixed to the connection member at a first point and the oscillation shaft is affixed to the connection member at a second point. An extension of the axis of the oscillation shaft intersects with the axis of the welding torch at an intersection point. The distance from the intersection point to the tip of the electrode is less than a distance from the first point on the connection member to the tip of the electrode. During operation, the oscillation in the oscillation shaft is transferred through the connection member to the welding torch and causes pendulum type oscillations in the welding torch with the intersection point serving as the pivot point of the oscillation.

Abstract: A welding device includes a welding torch having an electrode, an oscillation assembly having an oscillation shaft, and a connection member. The welding torch is affixed to the connection member at a first point and the oscillation shaft is affixed to the connection member at a second point. An extension of the axis of the oscillation shaft intersects with the axis of the welding torch at an intersection point. The distance from the intersection point to the tip of the electrode is less than a distance from the first point on the connection member to the tip of the electrode. During operation, the oscillation in the oscillation shaft is transferred through the connection member to the welding torch and causes pendulum type oscillations in the welding torch with the intersection point serving as the pivot point of the oscillation.