Multi-size fins wiper plug

Abstract

A system for removing contaminants from a tubular pipe. The system may include a wiper plug with a plurality of wipers. The wipers may include a first wiper with a first diameter different from a second diameter of a second wiper. The system may include a landing profile that may include at least two arms configured to extend outward. The system may include a valve disposed in an internal bore of the wiper plug. The valve may include a plurality of shear pins configured to hold the valve in a closed position and to break from increasing pressure to allow the valve to open. The system may include a nipple comprising a latch profile configured to cooperate with the landing profile of the wiper plug for holding the wiper plug in the tubular pipe.

1 . A system for removing contaminants from a tubular pipe in a well having a portion of a bore of the tubular pipe containing the contaminants, the system comprising:
 a wiper plug having an internal bore and an external profile comprising:
 a plurality of wipers on an upper end of the wiper plug on the external profile, 
 wherein the plurality of wipers comprises a first wiper and a second wiper, and wherein the first wiper has a first outside diameter that is different from a second outside diameter of the second wiper; and 
 a landing profile on a lower end of the wiper plug on the external profile for positioning the wiper plug in the tubular pipe, and configured to travel down in the tubular pipe, 
 wherein the landing profile comprises at least two arms configured to extend outward from the external profile; 
 a valve disposed at the lower end of the wiper plug in the internal bore, 
 wherein the valve comprises a plurality of shear pins configured to hold the valve in a closed position and to break from increasing pressure upon the wiper plug to allow the valve to move from the closed position to an open position; and 
 a nipple comprising a latch profile configured to cooperate with the landing profile of the wiper plug for holding the wiper plug at a landing position in the tubular pipe, wherein the at least two arms lock, using at least one locking dog and a spring mechanical locking mechanism, the wiper plug to the nipple. 
   
     
     
         2 . (canceled) 
     
     
         3 . The system of  claim 1 , further comprising a spring mechanical locking mechanism disposed on the wiper plug and configured to cooperate with an internal profile of the nipple to trigger the at least two arms to extend out from the external profile and to engage the latch profile. 
     
     
         4 . The system of  claim 1 , wherein the tubular pipe is production tubing. 
     
     
         5 . The system of  claim 1 , wherein the valve is a unidirectional flow valve configured to selectively control flow of a fluid through the internal bore and disposed within the wiper plug. 
     
     
         6 . The system of  claim 5 , wherein the unidirectional flow valve is a flapper valve. 
     
     
         7 . The system of  claim 1 , wherein at least one of the plurality of wipers comprises a fin, and wherein an exterior peripheral surface of the fin comprises a radially expandable sealing surface adapted to seal against an inner surface of the tubular pipe. 
     
     
         8 . A method for removing contaminants from a tubular pipe in a well having a portion of a bore of the tubular pipe containing the contaminants, the method comprising:
 installing a nipple comprising a latch profile at an end of the tubular pipe;   running a wiper plug having an internal bore, a plurality of wipers, a landing profile, and a valve within the tubular pipe,   wherein the plurality of wipers comprises a first wiper and a second wiper, and wherein the first wiper has a first outside diameter that is different from a second outside diameter of the second wiper,   wherein the landing profile comprises at least two arms configured to extend outward from an external profile of the wiper plug;   pumping substance inside the tubular pipe to push the wiper plug toward the nipple;   removing the contaminants within the tubular pipe, via the at least three multi-sized wipers, out of the tubular pipe;   setting the wiper plug mechanically in place on the latch profile via the landing profile,   wherein setting the wiper plug increases pressure in the tubular pipe;   breaking a plurality of shear pins in the valve, via pumping the substance before, when, or after setting the wiper plug, to shear the valve and circulate the substance through the tubular pipe; and   circulating the contaminants out of the tubular pipe through breaking the plurality of shear pins.   
     
     
         9 . The method of  claim 8 , further comprising:
 pumping through the wiper plug.   
     
     
         10 . The method of  claim 8 , wherein the contaminants comprise cement. 
     
     
         11 . The method of  claim 8 , wherein the substance is a drilling mud. 
     
     
         12 . The method of  claim 8 , wherein the nipple is a seating nipple. 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . The method of  claim 8 , wherein the tubular pipe is production tubing. 
     
     
         16 . The method of  claim 8 , wherein the valve is a unidirectional flow valve configured to selectively control flow of fluid through the internal bore and disposed within the wiper plug. 
     
     
         17 . The method of  claim 16 , wherein the unidirectional flow valve is a flapper valve. 
     
     
         18 . The method of  claim 8 , wherein at least one of the plurality of wipers comprises a fin, wherein an exterior peripheral surface of the fin comprises a radially expandable sealing surface adapted to seal against an inner surface of the tubular pipe. 
     
     
         19 . The method of  claim 18 , wherein the fins comprise synthetic rubber. 
     
     
         20 . The method of  claim 18 , wherein the fins comprise polyurethane.