10,000-psi multilateral fracking system with large internal diameters for unconventional market

Abstract

Provided is a frac window system, a well system, and a wellbore stimulation method. The frac window system, in one aspect, includes an elongated tubular having a first end and a second end with an opening defined in a wall of the elongated tubular between the first end and the second end, the wall having an inner surface and an outer surface, wherein the opening in the wall is configured to align with a window of a wellbore casing. The frac window system, according to this aspect, may further include a polished bore receptacle coupled to the first end of the elongated tubular, the polished bore receptacle having an inside diameter (ID1) sufficient to engage with a high-pressure frac string.

What is claimed is: 
     
         1 . A frac window system, comprising:
 an elongated tubular having a first end and a second end with an opening defined in a wall of the elongated tubular between the first end and the second end, the wall having an inner surface and an outer surface, wherein the opening in the wall is configured to align with a window of a wellbore casing; and   a polished bore receptacle coupled to the first end of the elongated tubular, the polished bore receptacle having an inside diameter (ID 1 ) sufficient to engage with a high-pressure frac string.   
     
     
         2 . The frac window system as recited in  claim 1 , wherein the elongated tubular has an inside diameter (ID 3 ), and further wherein the inside diameter (ID 1 ) of the polished bore receptacle is greater than the inside diameter (ID 3 ) of the elongated tubular. 
     
     
         3 . The frac window system as recited in  claim 1 , wherein the inside diameter (ID 1 ) of the polished bore receptacle is at least 5-½″. 
     
     
         4 . The frac window system as recited in  claim 1 , wherein the inside diameter (ID 1 ) of the polished bore receptacle is at least 7″. 
     
     
         5 . The frac window system as recited in  claim 1 , wherein the polished bore receptacle is capable of withstanding the stresses of stimulating at a pressure of above 5,000-psi. 
     
     
         6 . The frac window system as recited in  claim 1 , wherein the polished bore receptacle is capable of withstanding the stresses of stimulating at a pressure of at least 10,000-psi. 
     
     
         7 . The frac window system as recited in  claim 1 , wherein the polished bore receptacle is capable of withstanding the stresses of stimulating at a pressure of over 12,500-psi. 
     
     
         8 . The frac window system as recited in  claim 1 , wherein the polished bore receptacle is capable of withstanding the stresses of stimulating at a pressure of 15,000-psi. 
     
     
         9 . The frac window system as recited in  claim 1 , wherein a length (L 1 ) of the polished bore receptacle is at least two times the inside diameter (ID 1 ) of the polished bore receptacle. 
     
     
         10 . The frac window system as recited in  claim 1 , wherein the polished bore receptacle comprises at least a 125-ksi grade material.