Frac head apparatus

Abstract

A frac head apparatus has a body with an internal bore extending therethrough, a first flow bore formed through the body so as to have an inner end opening to the internal bore of the body and an outer end opening to an outer side of the body, and a second flow bore formed through the body so as to have an inner end opening to the internal bore of the body and an outer end opening at an outer side of the body. The inner end of the first and second flow bores are positioned at different levels within the body. Each of the first and second flow bores has a longitudinal axis offset from and not intersecting a longitudinal axis of the internal bore of the body such that a fluid flow through the flow bores is directed toward a wall of the internal bore offset from an opposite side of the wall of the internal bore from the inner ends of the flow bores.

I claim: 
     
         1 . A frac head apparatus comprising:
 a body having an internal bore extending therethrough, said internal bore having an inlet at an upper end thereof and an outlet at a lower end thereof;   a first flow bore formed through said body so as to have an inner end opening to said internal bore of said body and an outer end opening at an outer side of said body, said first flow bore angling through said body such that said inner end is at a level lower than said outer end; and   a second flow bore formed through said body so as to have an inner end and an outer end, said inner end of said second flow bore being positioned opposite said inner end of said first flow bore, said second flow bore angling through said body such that said inner end of said second flow bore is at a level lower than said outer end of said second flow bore, said inner end of said first flow bore being at a level different than a level of said inner end of said second flow bore.   
     
     
         2 . The frac head apparatus of  claim 1 , said first flow bore having a longitudinal axis offset and not intersecting a longitudinal axis of said internal bore of said body such that a flow through said first flow bore is directed toward a wall of said inner bore offset from an opposite side of said wall of said internal bore. 
     
     
         3 . The frac head apparatus of  claim 1 , said second flow bore angling through said body at an angle relative to the longitudinal axis of said internal bore, said angle of said second flow bore being similar to an angle at which said first flow bore extends relative to the longitudinal axis of said internal bore. 
     
     
         4 . The frac head apparatus of  claim 2 , said second flow bore having a longitudinal axis offset from and not intersecting the longitudinal axis of said internal bore of said body such that a fluid flow through said second flow bore is directed toward said wall of said internal bore offset from an opposite side of said wall of said internal bore. 
     
     
         5 . The frac head apparatus of  claim 4 , said longitudinal axis of said first flow bore being in parallel planar relationship to a longitudinal axis of said second flow bore. 
     
     
         6 . The frac head apparatus of  claim 1 , said inner end of said second flow bore positioned at a level above said inner end of said first flow bore. 
     
     
         7 . The frac head apparatus of  claim 1 , further comprising:
 a third flow bore formed through said body so as to have an inner end and an outer end, said inner end of said third flow bore opening to said internal bore of said body in a location circumferentially between said inner ends of said first and second flow bores, said third flow bore angling through said body such that said inner end of said third flow bore is at a level lower than a level of said outer end of said third flow bore.   
     
     
         8 . The frac head apparatus of  claim 7 , further comprising:
 a fourth flow bore formed through said body so as to have an inner end and an outer end, said inner end of said fourth flow bore opening to said internal bore of said body in a location circumferentially between inner ends of said first and second flow bores and generally opposite to said inner end of said third flow bore, said fourth flow bore angling through said body such that said inner end of said fourth flow bore is at a level lower than a level of said outer end of said fourth flow bore.   
     
     
         9 . The frac head apparatus of  claim 8 , said third flow bore angling through said body at an angle relative to the longitudinal axis of said internal bore of said body, said fourth flow bore angling through said body at an angle relative to the longitudinal axis of said internal bore of said body, said angle of said third flow bore being similar to said angle of said fourth flow bore. 
     
     
         10 . The frac head apparatus of  claim 8 , said inner end of said third flow bore being diametrically opposite said inner end of said fourth flow bore. 
     
     
         11 . The frac head at apparatus of  claim 8 , said inner ends of said first flow bore, said second flow bore, said third flow bore and said fourth flow bore being at different levels relative to the longitudinal axis of said internal bore of said body. 
     
     
         12 . The frac head apparatus of  claim 9 , said third flow bore having a longitudinal axis offset and not intersecting the longitudinal axis of said internal bore of said body such that a fluid flow through said third flow bore is directed toward the wall of said internal bore offset from an opposite side of said wall of said internal bore from said inner end of said third flow bore. 
     
     
         13 . The frac head apparatus of  claim 12 , said fourth flow bore having a longitudinal axis offset from and not intersecting the longitudinal axis of said internal bore of said body such that a fluid flow through said fourth flow bore is directed to said wall of said internal bore offset from an opposite side of said wall of said internal bore from said inner end of said fourth flow bore. 
     
     
         14 . The frac head apparatus of  claim 13 , said longitudinal axis of said third flow bore being in parallel planar relationship to the longitudinal axis of said fourth flow bore. 
     
     
         15 . A frac head apparatus comprising:
 a body having an internal bore extending therethrough, said internal bore having an inlet at an upper end thereof and an outlet at a lower end thereof;   a first flow bore formed through said body so as to have an inner end opening to said internal bore of said body and an outer end opening at an outer side of said body, said first flow bore angling through said body such that said inner end is at a level lower than said outer end, said first flow bore having a longitudinal axis offset and not intersecting a longitudinal axis of said internal bore of said body such that a fluid flow through said first flow bore is directed toward a wall of said internal bore offset from an opposite side of said internal bore from said inner end of said first flow bore; and   a second flow bore formed through said body so as to have an inner end and an outer end, said inner end of said second flow bore being positioned opposite said inner end of said first flow bore, said second flow bore angling through said body such that said inner end of said second flow bore is at a level lower than said outer end of said second flow bore, said second flow bore having a longitudinal axis offset from and not intersecting the longitudinal axis of said internal bore of said body such that a fluid flow through said second flow bore is directed toward said wall of said internal bore offset from an opposite side of said wall of said internal bore from said inner end of said second flow bore.   
     
     
         16 . The frac head apparatus of  claim 15 , said second flow bore angling through said body at an angle relative to the longitudinal axis of said internal bore, said angle of said second flow bore being similar to an angle at which said first flow bore extends relative to the longitudinal axis of said internal bore. 
     
     
         17 . The frac head apparatus of  claim 16 , further comprising:
 a third flow bore formed through said body so as to have an inner end and outer end, said inner end of said third flow bore opening to said internal bore of said body in a location circumferentially between said inner ends of said first and second flow bores, said third flow bore angling through said body such that said inner end of said third flow bore is at a level lower than a level of said outer end of said third flow bore; and   a fourth flow bore formed through said body so as to have an inner end and an outer end, said inner end of said fourth flow bore opening to said internal bore of said body in a location circumferentially between said inner ends of said first and second flow bores and generally opposite to said inner end of said third flow bore, said fourth flow bore angling through said body such that said inner end of said fourth flow bore is at a level lower than a level of said outer end of said fourth flow bore.   
     
     
         18 . The frac head apparatus of  claim 15 , said inner end of said second flow bore positioned at a level above said inner end of said first flow bore. 
     
     
         19 . A frac head apparatus comprising:
 a body having an internal bore extending therethrough, said internal bore having an inlet at an upper end thereof and an outlet at a lower end thereof;   a first flow bore formed through said body so as to have an inner end opening to said internal bore of said body and an outer end opening at an outer side of said body, said first flow bore angling through said body such that said inner end is at a level lower than said outer end;   a second flow bore formed to said body so as to have an inner end and an outer end, said inner end of said second flow bore being positioned opposite said inner end of said first flow bore, said second flow bore angling through said body such that said inner end of said second flow bore is at a level below said outer end of said second flow bore;   a third flow bore formed through said body so as to have an inner end and an outer end, said inner end of said third flow bore opening to said internal bore of said body in a location circumferentially between said inner ends of said first and second flow bores, said third flow bore angling through said body such that said inner end of said third flow bore is at a level lower the level of said outer end of said third flow bore; and   a fourth flow bore formed through said body so as to have an inner end and an outer end, said inner end of said fourth flow bore opening to said internal bore of said body in a location circumferentially between said inner ends of said first and second flow bores and generally opposite said inner end of said third flow bore, said fourth flow bore angling through said body such that said inner end of said fourth flow bore is at a level lower than a level of said outer end of said fourth flow bore.   
     
     
         20 . The frac head apparatus of  claim 19 , said inner ends of said first flow bore and second flow bore and said third flow bore and said fourth flow bore being positioned at different levels within said body.