Control of multiple tubing string well systems
US9540911B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 7, 2010 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jul 12, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Design and control of well systems with multiple tubing strings is described. An example system models multiple tubing strings in wellbores as segments, with multiple control points selectively located among the segments. Each segment is modeled as one or more equations that describe characteristics of a fluid resource associated with the segment. The system can predict flow of fluids and energy in a wellbore by solving physical conservation equations subject to specified conditions. The system models multiple control points, and solves the equations to convergence to satisfy injection and production targets and specified constraints. Results may be used to improve production of the resource. The system can apply a variety of strategies to model wells via multiple control points, including conservation of mass and energy models, a global phase-component partitioning model, a conductive heat transfer model, a pseudo-pressure model, a non-Darcy flow model, a phase separation model, and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.