| Title | PTS Tool Safety Analysis on Geothermal Production Well Using Fluid Flow Modelling |
|---|---|
| Authors | R. Fuad Satrio Ajie, Jooned Hendrasakti |
| Year | 2013 |
| Conference | Indonesian Geothermal Association Conference |
| Keywords | PTS survey, ANSYS-FLUENT, Fluidflow Modelling, Tool Safety |
| Abstract | Well characteristics such as pressure, temperature, fluid flow, and productivity index are some of the basic information that needs to be obtained in order to maximize the utilization also monitoring of the reservoir. PTS survey is commonly used to obtain such information. The vertical movement of PTS tool along the wellbore is controlled by constant velocity wire while centralizer and additional weight are attached to the tool to maintain the position. Due to some of the failure cases of the survey occurred on the liner of the wellbore configuration due to the upward fluid-force was greater than the additional weight, safety tool subject is one of the main concerns. A numerical study has been developed to understand this phenomenon. A fluid-flow model was built to simulate the behavior of the tool (with the additional weight that was calculated from the fluid properties of the well-bore casing of FSA-1 production well) in the liner using the ANSYSFLUENT fluid-flow modeler. The PTS tool model is defined within a cylindrical well-bore liner with the boundary condition based on data obtained from the former PTS survey. Through this fluid-flow simulation, this study has found the safe additional weight that should be attached to eliminate the possibilities of tool failures. |