Techniques for positioning precision between subassemblies

Abstract

Methods and systems are provided for designing and determining a well service in the presence of loss, including the volume, rates, and duration of pumping of fluids in the presence of losses. A method of designing services for wellbores includes calibrating a loss circulation model with input comprising wellbore state to update the loss circulation model with formation loss zone characteristics; applying the loss circulation model to output at least a prediction of loss rate; and designing a wellbore service at least partially based on the prediction of the loss rate.

1 . A system for coupling a first subassembly with a second subassembly, the system comprising:
 a fastener configured to maintain a preload between a first bushing and a second bushing along an axis of the fastener, the fastener comprising a first interface concentric with the axis of the fastener, a second interface concentric with the axis of the fastener, and a third interface concentric with the axis of the fastener, wherein the first interface is configured to provide at least a radial constraint between the fastener and the first subassembly relative to the axis of the fastener;   the first bushing comprising:
 a fourth interface configured to couple with the second interface in accordance with at least a radial constraint relative to the axis of the fastener; and 
 a fifth interface configured to:
 couple the first bushing with the second subassembly in accordance with at least a radial constraint relative to an axis of the first bushing while the preload is maintained; and 
 provide at least a radial degree of freedom between the first bushing and the second subassembly relative to the axis of the first bushing while the preload is removed; and 
 
   the second bushing comprising:
 a sixth interface configured to couple with the third interface in accordance with at least a radial constraint relative to the axis of the fastener; and 
 a seventh interface configured to:
 couple the second bushing with the second subassembly in accordance with at least a radial constraint relative to an axis of the second bushing while the preload is maintained; and 
 provide at least a radial degree of freedom relative to the axis of the second bushing while the preload is removed. 
 
   
     
     
         2 . The system of  claim 1 , further comprising:
 a bearing comprising:
 an eighth interface configured to couple with the first interface in accordance with at least a radial constraint relative to the axis of the fastener; and 
 a ninth interface configured to couple the bearing with the first subassembly in accordance with at least a radial constraint relative to an axis of the bearing. 
   
     
     
         3 . The system of  claim 2 , wherein:
 the bearing comprises a spherical bearing configured to provide a spherical degree of freedom between a first portion of the spherical bearing and a second portion of the spherical bearing, the first portion comprising the eighth interface and the second portion comprising the ninth interface.   
     
     
         4 . The system of  claim 1 , wherein first interface, the second interface, and the third interface each correspond to a respective portion of a common cylindrical surface of the fastener. 
     
     
         5 . The system of  claim 1 , wherein:
 the fastener comprises an external threaded portion; and   the second bushing comprises an internal threaded portion,   wherein the preload is based at least in part on mating the external threaded portion with the internal threaded portion.   
     
     
         6 . The system of  claim 1 , further comprising:
 a third bushing comprising:
 a tenth interface configured to couple with the fifth interface; and 
 an eleventh interface configured to couple with the second subassembly in accordance with at least a radial constraint relative to an axis of the third bushing; and 
   a fourth bushing comprising:
 a twelfth interface configured to couple with the seventh interface; and 
 a thirteenth interface configured to couple with the second subassembly in accordance with at least a radial constraint relative to an axis of the fourth bushing. 
   
     
     
         7 . The system of  claim 6 , further comprising:
 a retainer configured to couple with the fourth bushing and limit a displacement of the second bushing, relative to the fourth bushing, along the axis of the second bushing in a direction opposite the seventh interface.   
     
     
         8 . The system of  claim 6 , wherein:
 the third bushing comprises a first opening to receive the first bushing, wherein a cross-sectional area of the first opening is larger than a cross-sectional area of the first bushing; and   the fourth bushing comprises a second opening to receive the second bushing, wherein a cross-sectional area of the second opening is larger than a cross-sectional area of the first bushing.   
     
     
         9 . The system of  claim 6 , wherein:
 the second bushing comprises a fourteenth interface; and   the fourth bushing comprises a fifteenth interface configured to limit rotation of the second bushing about the axis of the second bushing based at least in part on contact with the fourteenth interface.   
     
     
         10 . The system of  claim 6 , wherein:
 the fifth interface comprises a first convex spherical surface;   the seventh interface comprises a second convex spherical surface;   the tenth interface comprises a first concave spherical surface; and   the twelfth interface comprises a second concave spherical surface.   
     
     
         11 . The system of  claim 10 , wherein:
 the first convex spherical surface is associated with a first solid angle;   the second convex spherical surface is associated with a second solid angle;   the first concave spherical surface is associated with a third solid angle that is different than the first solid angle; and   the second concave spherical surface is associated with fourth solid angle that is different than the second solid angle.   
     
     
         12 . An apparatus comprising:
 a first subassembly associated with a first coupling location and a second coupling location;   a second subassembly associated with a third coupling location and a fourth coupling location;   a first fastener associated with a first axis, the first fastener configured to couple with the first coupling location in accordance with a first radial constraint;   a first bushing having a first opening configured to couple with the first fastener in accordance with a second radial constraint;   a second bushing having a second opening configured to couple with the first fastener in accordance with a third radial constraint;   a second fastener associated with a second axis, the second fastener configured to couple with the second coupling location in accordance with a fourth radial constraint;   a third bushing having a third opening configured to couple with the second fastener in accordance with a fifth radial constraint; and   a fourth bushing having a fourth opening configured to couple with the second fastener in accordance with a sixth radial constraint,   wherein:
 the first bushing and the second bushing are configured to couple with the third coupling location, based at least in part on a preload of the first fastener between the first bushing and the second bushing, in accordance with a seventh radial constraint; and 
 the third bushing and the fourth bushing are configured to couple with the fourth coupling location, based at least in part on a preload of the second fastener between the third bushing and the fourth bushing, in accordance with an eighth radial constraint. 
   
     
     
         13 . The apparatus of  claim 12 , wherein:
 a configuration to couple in accordance with the fifth radial constraint is based at least in part on a surface of the first bushing that is non-perpendicular with the first axis and a surface of the second bushing that is non-perpendicular with the first axis; and   a configuration to couple in accordance with the sixth radial constraint is based at least in part on a surface of the third bushing that is non-perpendicular with the second axis and a surface of the fourth bushing that is non-perpendicular with the second axis.   
     
     
         14 . The apparatus of  claim 12 , wherein:
 a configuration to couple in accordance with the fifth radial constraint is based at least in part on a first surface of the second subassembly that is non-perpendicular with the first axis and a second surface of the second subassembly that is non-perpendicular with the first axis; and   a configuration to couple in accordance with the sixth radial constraint is based at least in part on a third surface of the second subassembly that is non-perpendicular with the second axis and a fourth surface of the second subassembly that is non-perpendicular with the second axis.   
     
     
         15 . The apparatus of  claim 12 , further comprising:
 a fifth bushing coupled with the second subassembly at the third coupling location in accordance with a seventh radial constraint;   a sixth bushing coupled with the second subassembly at the third coupling location in accordance with an eighth radial constraint;   a seventh bushing coupled with the second subassembly at the fourth coupling location in accordance with a ninth radial constraint; and   an eighth bushing coupled with the second subassembly at the fourth coupling location in accordance with a tenth radial constraint, wherein:
 a configuration to couple in accordance with the fifth radial constraint is based at least in part on a surface of the fifth bushing that is non-perpendicular with the first axis and a surface of the sixth bushing that is non-perpendicular with the first axis; and 
 a configuration to couple in accordance with the sixth radial constraint is based at least in part on a surface of the seventh bushing that is non-perpendicular with the second axis and a surface of the eighth bushing that is non-perpendicular with the second axis. 
   
     
     
         16 . The apparatus of  claim 12 , further comprising:
 a first spherical bearing configured for a spherical degree of freedom between a first portion and a second portion, wherein the first portion comprises a fifth opening configured to couple with the first fastener in accordance with an eleventh radial constraint, and wherein the second portion is configured to couple with the first subassembly at the first coupling location in accordance with a twelfth radial constraint; and   a second spherical bearing configured for a spherical degree of freedom between a third portion and a fourth portion, wherein the third portion comprises a sixth opening configured to couple with the second fastener in accordance with a thirteenth radial constraint, and wherein the fourth portion is configured to couple with the first subassembly at the second coupling location in accordance with a fourteenth radial constraint.   
     
     
         17 . The apparatus of  claim 12 , wherein:
 one of the first subassembly or the second subassembly comprises a mounting pedestal; and   the other of the first subassembly or the second subassembly comprises an antenna assembly.   
     
     
         18 . A method comprising:
 inserting a first fastener through a first opening of a first bushing, a second opening associated with a first subassembly, and a third opening of a second bushing, based at least in part on a radial degree of freedom between the first bushing and a second subassembly and a radial degree of freedom between the second bushing and the second subassembly;   constraining the first subassembly and the second subassembly in directions radial to an axis of the first fastener based at least in part on preloading, using the first fastener, a first surface of the first bushing with a second surface associated with the second subassembly and a third surface of the second bushing with a fourth surface associated with the second subassembly, wherein preloading the first surface with the second surface is associated with a radial constraint between the first bushing and the second subassembly, and wherein preloading the third surface with the fourth surface is associated with a radial constraint between the second bushing and the second subassembly;   inserting a second fastener through a fourth opening of a third bushing, a fifth opening associated with the first subassembly, and a sixth opening of a fourth bushing, based at least in part on a radial degree of freedom between the third bushing and the second subassembly and a radial degree of freedom between the fourth bushing and the second subassembly; and   constraining the first subassembly and the second subassembly in directions radial to an axis of the second fastener based at least in part on preloading, using the second fastener, a fifth surface of the third bushing with a sixth surface associated with the second subassembly and a seventh surface of the fourth bushing with an eighth surface associated with the second subassembly, wherein preloading the fifth surface with the sixth surface is associated with a radial constraint between the third bushing and the second subassembly, and wherein preloading the seventh surface with the eighth surface is associated with a radial constraint between the fourth bushing and the second subassembly.   
     
     
         19 . The method of  claim 18 , wherein:
 the first surface, the second surface, the third surface, and the fourth surface are non-perpendicular to the axis of the first fastener; and   the first surface, the second surface, the third surface, and the fourth surface are non-perpendicular to the axis of the first fastener.   
     
     
         20 . The method of  claim 18 , wherein rotating the second subassembly relative to the first subassembly, after preloading the first surface with the second surface and preloading the third surface with the fourth surface, based at least in part on a rotational degree of freedom between the first subassembly and the second subassembly about the axis of the first fastener.