Interference testing while drilling

摘要

A method and apparatus configured to perform an interference test while drilling, including the steps of computing a pressure history response at a monitoring well from a pulsing of a well remote to the monitoring well, determining a time interval and a location for conducting a pressure test along a monitoring well trajectory based on the computing of the pressure history response, initiating a pulsing of the well remote to the monitoring well, determining whether pressure data should be taken at the monitoring well, estimating a near wellbore pressure effect at the monitoring well if the pressure data is taken, adjusting a mud circulation flow rate in the monitoring well if the pressure data is taken, and measuring at least one pressure value at the monitoring well if the pressure data is taken.

主权项

1. A method for interference testing while drilling, comprising: computing a pressure history response at a monitoring well based on a reservoir model and before a pressure while drilling tool is deployed, wherein the response is computed by pulsing a well remote to the monitoring;
determining a time interval and a location for conducting a pressure test along a monitoring well trajectory based on the computing of the pressure history response; initiating a pulsing of the well remote to the monitoring well; initiating drilling of the monitoring well; determining whether pressure data should be taken at the monitoring well; estimating a near wellbore pressure effect at the monitoring well, Psf(t, z), wherein the estimating of the near wellbore pressure effect is calculated by a formula of: Psf(t, z)=pff(t, z)+s(t, z), where pff(t, z) is the pressure response of the monitoring well's reservoir at the location z and time t due to pulsing the remote well and s(t, z) is a near wellbore contribution computed using a local model of the monitoring well utilizing pff(t, z) as the far field pressure; adjusting a mud circulation flow rate in the monitoring well; measuring at least one pressure value at the monitoring well; and communicating the at least one pressure to a surface computing system via wired drill pipe whereby the pressure history response and the reservoir model are updated.