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→Analyzing the DST
==Analyzing the DST==
==Analyzing the DST==
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<gallery heights=300px>
file:drill-stem-testing_fig3.png|{{figure number|3}}Perfect chart. Gauge located inside and above the closing tool. (A) Add cushion/run in hole; (B) initial flow period; (C) initial shut-in period; (D) final flow period; (E) final shut-in period; and (F) pulling out of hole.
file:drill-stem-testing_fig3.png|{{figure number|3}}Perfect chart. Gauge located inside and above the closing tool. (A) Add cushion/run in hole; (B) initial flow period; (C) initial shut-in period; (D) final flow period; (E) final shut-in period; and (F) pulling out of hole.
file:drill-stem-testing_fig4.png|{{figure number|4}}Collar leak. Gauge located inside and above the closing tool. Chart indicates increasing pressure during running in hole and shut-in periods.
file:drill-stem-testing_fig4.png|{{figure number|4}}Collar leak. Gauge located inside and above the closing tool. Chart indicates increasing pressure during running in hole and shut-in periods.