| 摘要 |
A method of providing a productivity index (PI) profile 26 over a length of a producing or injection well. Preferably the PI profile is obtained by deriving multiple values of the PI (approximately every 30 cm) from a flow profile 22 along the said length, the flow profile itself being derived from distributed temperature measurements along the length. The PI index at a position in the wellbore is preferably calculated from the derived flow rate, the known reservoir pressure and the known wellbore pressure at that position. A second aspect provides for a method of managing oil well production using the above method, optionally with the stimulation of oil production whilst monitoring the PI profile. A further aspect provides a method wherein the reservoir pressure can be monitored by assuming a constant PI so that a decreasing flow rate indicates a drop in reservoir pressure. |
