Exploring wellbore and reservoir temperature profiles in fluid circulation and production operations

<p>"The wellbore heat flow occurs during different well operations resulting from any temperature differences between the wellbore fluid and the adjacent formation. Understanding the direction and mechanism of heat flow whether it is conduction or convection help to represent this heat exchange mathematically. However, the only available factor used to understand the heat flow behavior is the measured wellbore temperature which can be obtained from the direct measurement while drilling or circulation operations, well logging, well test, or from the production operations. Also, the initial geothermal formation temperature resulting from the geothermal gradient will help to understand the undistributed formation temperature and the heat flow behavior.</p><p>In general, there are two type of models; the first type depends on the conservation of heat energy theory for both steady and unsteady satiations. And the second model type depend on the analogy between the pressure and temperature diffusivity equations.</p><p>In this study, and in addition to the old boundary conditions that used to solve the heat energy system we introduce two new boundary condition that can expanse the insight of the predictive temperature and then the heat flow rate. Another model was present to investigate a new factor that can be effect the wellbore temperature resulting from the Kinetic rotational energy of the drillstring in drilling operations. The thermal radius and the heat transfer behavior was also investigated for drilling, circulation, and production operations. Finally, a full derivation of the line-source solution of the temperature diffusivity equation, which provide a required recipe to studying the falloff and build-up temperature record of transient temperature test"--Abstract, page iv.</p>

Name thesis:degree_name

Ph. D. in Petroleum Engineering

Grantor

Missouri University of Science and Technology

Author dc:creator

• Al Saedi, Ahmed Qasim

• Formation temperature
• Heat flow rate
• Temperature well test
• Thermal behavior
• Petroleum Engineering

Repository record dc:identifier

https://scholarsmine.mst.edu/doctoral_dissertations/2858

OAI identifier oai:identifier

oai:scholarsmine.mst.edu:doctoral_dissertations-3863