Techniques for positioning precision between subassemblies
AssigneeViaSat, Inc.
InventorsJohn A. Guerre, Michael J. Bartnett, Ken J. Larson, Michael C. Langer
Life of this patent
Estimating the term…
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.
Claims20
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.
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.
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.
Dependencies are inferred from the claim text.