Easy change pump plunger

A method of servicing a wellbore, the method comprising:

• fluidly coupling a pump to a source of a wellbore servicing fluid and to the wellbore, wherein the pump comprises:
• a pump fluid end and a power end, wherein the pump fluid end comprises:
• a reciprocating element assembly comprising a reciprocating element adapter having a reciprocating element end opposite a reciprocating element clamp end;
• a reciprocating element, wherein the reciprocating element is cylindrical and has a reciprocating element adapter end and a front end, wherein the reciprocating element adapter end of the reciprocating element is opposite of the front end of the reciprocating element, and wherein:
• (a) the reciprocating element adapter end of the reciprocating element and the reciprocating element end of the reciprocating element adapter comprise threads, such that the reciprocating element adapter end of the reciprocating element is threadably coupled to the reciprocating element end of the reciprocating element adapter via the threads, or
• (b) the reciprocating element adapter end of the reciprocating element is threadably coupled to the reciprocating element end of the reciprocating element adapter via a threaded stud;
• and a reciprocating element clamp, wherein the reciprocating element clamp has a first contact surface perpendicular to a central axis of the reciprocating element clamp and a second contact surface tapered relative to the central axis of the reciprocating element clamp, wherein the pump assembly is in an assembled configuration in which the reciprocating element adapter end of the reciprocating element is coupled to the reciprocating element end of the reciprocating element adapter, and wherein the reciprocating element clamp couples the reciprocating element clamp end of the reciprocating element adapter in contact with a reciprocating element clamp end of a pushrod of a pump power end and aligned with the reciprocating element clamp end of the pushrod of the pump power end, whereby the reciprocating element clamp allows for concentric or non-concentric mating between the reciprocating element adapter and the pushrod, such that, when rigidly held together by the reciprocating element clamp such that, the first contact surface of the clamp directly contacts a portion of the reciprocating element adapter, and the second contact surface of the reciprocating element clamp directly contacts a portion of the pushrod, a central axis of the reciprocating element is parallel to or coincident with a central axis of the pushrod;
• and wherein the pump power end is operable to reciprocate the reciprocating element within a reciprocating element bore of the pump fluid end;
• and communicating the wellbore servicing fluid into the wellbore via the pump.

A clamp comprising:

• a first contact surface perpendicular to a central axis of the clamp and a second contact surface tapered relative to the central axis of the clamp, whereby the clamp allows for concentric or non-concentric mating between a first component and a second component such that, when rigidly held together by the clamp such that the first contact surface of the clamp directly contacts a portion of the first component and the second contact surface of the clamp directly contacts a portion of the second component, a central axis of the first component is parallel to or coincident with a central axis of the second component, wherein the first component comprises a reciprocating element adapter and wherein the second component comprises a pushrod, wherein the reciprocating element adapter is threadably coupled with a reciprocating element,
• wherein (a) a reciprocating element end of the reciprocating element adapter and a reciprocating element adapter end of the reciprocating element comprise tapered threads, such that the reciprocating element adapter end of the reciprocating element is threadably coupled with the reciprocating element end of the reciprocating element adapter via threading of the tapered threads, or (b) the reciprocating element adapter end of the reciprocating element is threadably coupled to the reciprocating element end of the reciprocating element adapter via a threaded stud.