Well Intervention Pressure Control Valve

Abstract

A system comprising a control valve comprising a flapper either activated or inactivated, when activated the flapper may be closed or open and, when inactivated the flapper is open, a first sleeve transitional from a first to a second position, and a second sleeve transitional from a first to a second position, when the first and second sleeves are in the first position, the flapper is activated, when the first sleeve is in the second and the second sleeve is in the first position, the flapper is inactivated, when the first and second sleeves are in the second position, the flapper is activated, the application of pressure to the first sleeve via a first member transitions the first sleeve from the first to the second position, and the application of pressure to the second sleeve via a second member transitions the second sleeve from the first to the second position.

What is claimed is: 
     
         1 . A wellbore servicing system comprising:
 a work string; and   a pressure control valve tool incorporated within the work string and comprising:
 a housing generally defining an axial flowbore; 
 a flapper valve disposed within the axial flowbore and configurable between an activated state and an inactivated state,
 wherein, in the activated state the flapper valve is free to move between a closed position in which the flapper valve blocks the axial flowbore and an open position in which the flapper valve does not block the axial flowbore, and 
 wherein, in the inactivated state the flapper valve is retained in the open position; 
 
 a first sleeve slidably positioned within the housing and transitional from a first position to a second position with respect to the housing; and 
 a second sleeve slidably positioned within the first sleeve and transitional from a first position to a second position with respect to the first sleeve;
 wherein, when the first sleeve is in the first position with respect to the housing and the second sleeve is in the first position with respect to the first sleeve, the flapper valve is in the activated state; 
 wherein, when the first sleeve is in the second position with respect to the housing and the second sleeve is in the first position with respect to the first sleeve, the flapper valve is in the inactivated state; 
 wherein, when the first sleeve is in the second position with respect to the housing and the second sleeve is in the second position with respect to the first sleeve, the flapper valve is in the activated state; and 
 wherein, engagement of a first obturating member with the first sleeve and the application of a pressure of at least a threshold pressure onto the first obturating member causes the first sleeve to transition from the first position to the second position with respect to the housing and such that the engagement of a second obturating member with the second sleeve and the application of a pressure of at least a threshold pressure onto the second obturating member causes the second sleeve to transition from the first position to the second position with respect to the first sleeve. 
 
   
     
     
         2 . The wellbore servicing system of  claim 1 , wherein when the first sleeve is in the first position, the first sleeve is releasably coupled to the housing via a first retaining device comprising a shear pin, a snap ring, a biased pin, or combinations thereof. 
     
     
         3 . The wellbore servicing system of  claim 2 , wherein when the first sleeve is in the second position, the first sleeve is coupled to the housing via a snap ring. 
     
     
         4 . The wellbore servicing system of  claim 1 , wherein when the second sleeve is in the first position, the second sleeve is releasably coupled to the first sleeve via a second retaining device comprising a shear pin, a snap ring, a biased pin, or combinations thereof. 
     
     
         5 . The wellbore servicing system of  claim 4 , wherein when the second sleeve is in the second position, the second sleeve is not coupled to the first sleeve. 
     
     
         6 . The wellbore servicing system of  claim 1 , wherein the first obturating member may be sized to engage the first sleeve and not the second sleeve. 
     
     
         7 . The wellbore servicing system of  claim 6 , wherein the second obturating member may be sized to engage the second sleeve and not the first sleeve. 
     
     
         8 . The wellbore servicing system of  claim 1 , wherein the pressure control valve tool comprises two or more flapper valves disposed within the axial flowbore and configurable between the activated state and the inactivated state. 
     
     
         9 . A wellbore servicing method comprising:
 positioning a work string comprising a pressure control valve tool (PCVT) in a first configuration incorporated therein within a wellbore, wherein in the first configuration the PCVT provides unidirectional fluid flow through the work string;   introducing of a first obturating member within the PCVT and applying at least a pressure threshold onto the first obturating member thereby allowing bidirectional fluid communication through the work string;   introducing of a second obturating member within the PCVT and applying of at least a pressure threshold onto the second obturating member thereby allowing unidirectional fluid communication; and   removing the working string comprising the PCVT from the wellbore.   
     
     
         10 . The wellbore servicing method of  claim 9 , wherein the PCVT further comprises:
 a housing generally defining an axial flowbore;   a flapper valve disposed within the axial flowbore and configurable between an activated state and an inactivated state;
 wherein, in the activated state the flapper valve is free to move between a closed position in which the flapper valve blocks the axial flowbore and an open position in which the flapper valve does not block the axial flowbore; and 
 wherein, in the inactivated state the flapper valve is retained in the open position; 
   a first sleeve slidably positioned within the housing and transitional from a first position to a second position with respect to the housing; and   a second sleeve slidably positioned within the first sleeve and transitional from a first position to a second position with respect to the first sleeve;
 wherein, when the first sleeve is in the first position with respect to the housing and the second sleeve is in the first position with respect to the first sleeve, the flapper valve is in the activated state; 
 wherein, when the first sleeve is in the second position with respect to the housing and the second sleeve is in the first position with respect to the first sleeve, the flapper valve is in the inactivated state; 
 wherein, when the first sleeve is in the second position with respect to the housing and the second sleeve is in the second position with respect to the first sleeve, the flapper valve is in the activated state; and 
 wherein, engagement of a first obturating member with the first sleeve and the application of a pressure of at least a threshold pressure onto the first obturating member causes the first sleeve to transition from the first position to the second position with respect to the housing and such that the engagement of a second obturating member with the second sleeve and the application of a pressure of at least a threshold pressure onto the second obturating member causes the second sleeve to transition from the first position to the second position with respect to the first sleeve. 
   
     
     
         11 . The wellbore servicing method of  claim 10 , wherein when the first sleeve is in the first position, the first sleeve is releasably coupled to the housing via a first retaining device comprising a shear pin, a snap ring, a biased pin, or combinations thereof. 
     
     
         12 . The wellbore servicing method of  claim 11 , wherein when the first sleeve is in the second position, the first sleeve is coupled to the housing via a snap ring. 
     
     
         13 . The wellbore servicing method of  claim 10 , wherein when the second sleeve is in the first position, the second sleeve is releasably coupled to the first sleeve via second retaining device comprising a shear pin, a snap ring, a biased pin, or combinations thereof. 
     
     
         14 . The wellbore servicing method of  claim 13 , wherein when the second sleeve is in the second position, the second sleeve is not coupled to the first sleeve. 
     
     
         15 . The wellbore servicing method of  claim 14 , wherein the first obturating member may be sized to engage the first sleeve and not the second sleeve. 
     
     
         16 . The wellbore servicing method of  claim 15 , wherein the second obturating member may be sized to engage the second sleeve and not the first sleeve. 
     
     
         17 . The wellbore servicing method of  claim 9 , wherein the pressure control valve tool comprises two or more flapper valves disposed within the axial flowbore and configurable between the activated state and the inactivated state. 
     
     
         18 . A wellbore servicing method comprising:
 positioning a work string comprising a pressure control valve tool (PCVT) in a first configuration incorporated therein within a wellbore,
 wherein, the PCVT is configurable from the first configuration to a second configuration and from the second configuration to a third configuration, 
 wherein, when the PCVT is in the first configuration, the PCVT is configured to allow a route of fluid communication in a down-hole direction and to disallow a route of fluid in an up-hole direction via the PCVT, 
 wherein, when the PCVT is in the second configuration, the PCVT is configured to allow bidirectional fluid communication via the PCVT, and 
 wherein, when the PCVT is in the third configuration, the PCVT is configured to allow a route of fluid communication in a down-hole direction and to disallow a route of fluid in an up-hole direction via the PCVT; 
   transitioning the PCVT from the first configuration to the second configuration thereby allowing bidirectional fluid communication through the work string;   transitioning the PCVT from the second configuration to the third configuration thereby allowing unidirectional fluid communication; and   removing the working string comprising the PCVT from the wellbore.   
     
     
         19 . The wellbore servicing method of  claim 18 , wherein the PCVT transitions from the first configuration to the second configuration upon the introduction of a first obturating member within the PCVT and the application of at least a pressure threshold onto the first obturating member. 
     
     
         20 . The wellbore servicing method of  claim 19 , wherein the PCVT transitions from the second configuration to the third configuration upon the introduction of a second obturating member within the PCVT and the application of at least a pressure threshold onto the second obturating member.