| 摘要 |
Method for estimating the tilt of a layer of a reservoir by measuring the temperature of fluid in a production well at one or more locations (37A, 37B, 37C, 37D, 37E) within the production well at a plurality of points in time. The method comprises: receiving temperature data from the measuring devices, the temperature data being indicative of a temperature of fluid (38, 40) entering the production well; identifying a trend indicative of a change in temperature with time; identifying a velocity of fluid within the layer in a direction of flow of fluid within the layer; using the identified trend and the identified velocity to determine an estimate of the change in temperature by distance for the fluid, the distance being in a direction of flow of fluid within the layer; identifying a geothermal gradient indicative of a change with depth in the temperature of rock within and surrounding the reservoir; and determining a measure of the tilt of a layer in the reservoir based on the estimated change in temperature by distance and the geothermal gradient. |
