| Title | Computerised Well Test Analysis to Utilize Simultaneous Pressure and Flowrate Measurements |
|---|---|
| Authors | Horne, R.N., Guillot, A. and Rosa, A. |
| Year | 1983 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | |
| Abstract | The development of reliable spinner may help avoid much of the ambiguity which often accompanies well testa in geothermal due to interlayer flows through the well bore. However. the use of both pressure and flow rate changes requires new methods of well test interpretation. The Stanford Geothermal Program has been developing microcomputer-based techniques for the ous of pressure and rate measurements. There are two key steps in the procedure. Firstly. the non-linear regression is achieved by the gradients of the res (with respect to the unknown reservoir in Laplace space, and inverting numerically. Secondly, the variable rate is represented in terms of a of many step changes was found to work better than a spline fit to the data. One problem encountered when attempting to analyze data in which the spinner "stalled, a jump to zero bow rate. The method shows great promise in that the degrees of freedom on the are greatly reduced, th well bore storage effect disappears. and inter-feed affect the results. |