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1. Characterizing integration challenges in mission engineering to form solution strategies.

Author

Hernandez, Alejandro S. and Pollman, Anthony G.

Subjects
SYSTEM integration, ENGINEERING, PRODUCTION engineering, MILITARY technology, TECHNOLOGICAL innovations
Abstract

This paper presents a systematic approach to characterize integration challenges when implementing mission engineering and discusses some specific techniques to address these issues. With the introduction of mission engineering in the DOD science and technology lexicon, integration assumes a new dimension beyond the system product level. First, the authors offer a more precise definition of integration that focuses on incorporating a new technology or military capability into an existing organization's infrastructure. Using a collection of system integration literature and a set of examples, the authors define major problem areas regarding integration. Analyses of these issues present opportunities to identify specific methods to avoid or mitigate them. The resultant process is a foundation for mission engineering practitioners to plan successful integration of a new system. Acceptance of these procedures in the mission engineering community may lead to inclusion as standard practices in the DOD Mission Engineering Guide. [ABSTRACT FROM AUTHOR]

Published
2022
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2. A semi-analytical solution to the transient temperature behavior along the vertical wellbore after well shut-in

Author

Boyue Xu, Kegang Ling, and Xingru Wu

Subjects
Engineering, Petroleum engineering, Computer simulation, business.industry, Flow assurance, Gauge (firearms), Geotechnical Engineering and Engineering Geology, Transmissibility (vibration), Fuel Technology, Production manager, Production engineering, Point (geometry), Transient (oscillation), business, Simulation
Abstract

Temperature measured from a permanent downhole gauge in a well after the well shut-in provides a unique perspective for surveillance and production management. For example, in deepwater environment, production engineer needs to know the temperature of a shut-in well before it is being restarted since different temperature profiles along the wellbore may need very different restarting strategies for flow assurance purpose. A number from the “rule-of-thumb” or running complicated numerical simulation is either not reliable or impractical. This paper presents a semi-analytical model to estimate the temperature transient behavior after the well shut-in. The temperature at a point along the wellbore, which is useful for production management and flow assurance, is solved and the solution can be easily implemented for calculating temperature history. The temperature profile solution for locations along the wellbore is also presented in the paper. Furthermore, matching the calculated temperature with the measured temperature at the same location will yield the well local heat transmissibility coefficient. The applications of the solution to this model are multiple folders and a deepwater field example is provided to demonstrate some applications and valid the results.

Published
2015