There are many useful applications for surface pressure data instruments, besides those already described. Optimization or surveillance purposes for determining timing for the running or pulling of subsurface pressure recorders or termination of critical #welltests. Surface casing-vent tests can be conducted using the closed-chamber method. Water injection well tests for pressure maintenance monitoring (to keep oil wells producing revenues). Closed-chamber drill stem tests. Testing while under-balanced drilling gas wells (#LNG) (drill ahead, stop, test… drill ahead, stop, test…). Segregation and isolation tests (packers, plugs, casing/tubing holes, surface casing).
Contents of this blog were derived from the technical paper CIM 1997–35 “76 Examples of the Usefulness and Benefits of Surface Pressure Data for Well Testing Applications” by Robert Hawkes, CET and David Leech, BTech.