Method and System for Cementing

Abstract

A valve system for cementing including a valve and a sleeve shifter. The valve may have a moveable sleeve with openings and a housing situated about the moveable sleeve and having flow passages. The sleeve shifter may be configured to be opened and/or closed multiple times. The valve may be used in reverse cementing and/or squeeze jobs.

1 . A method of reverse cementing, comprising:
 running a valve into a well bore, wherein the valve comprises a moveable sleeve having openings, and a housing situated about the moveable sleeve and having flow passages;   actuating the valve with a sleeve shifter;   ensuring that the valve is in an open position; and   flowing cement down through an annulus between a casing and the well bore, through the valve, and up through a workstring;   wherein the step of ensuring that the valve is in an open position is performed prior to the step of flowing the cement.   
     
     
         2 . The method of  claim 1 , wherein the step of running the valve into the well bore is done with the valve in an open position. 
     
     
         3 . The method of  claim 1 , wherein the step of running the valve into the well bore is done with the valve in a closed position. 
     
     
         4 . The method of  claim 1 , wherein the sleeve shifter comprises a stinger on a workstring and wherein the step of actuating the valve with the sleeve shifter comprises reciprocating the workstring. 
     
     
         5 . The method of  claim 1 , further comprising the step of stinging the stinger into the valve prior to actuating the valve. 
     
     
         6 . The method of  claim 1 , further comprising cleaning the workstring, wherein the step of cleaning the workstring is performed after all other steps. 
     
     
         7 . The method of  claim 1 , wherein actuating the valve with the sleeve shifter comprises moving the sleeve longitudinally. 
     
     
         8 . The method of  claim 1 , wherein actuating the valve with the sleeve shifter comprises rotating the sleeve.