Patent Document ID: 20110288778
Application ID: 13129832
Patent Flag: 0

Claim One:
1. A method for estimation of Steam Assisted Gravity Drainage (SAGD) process characteristics characterized by the steps of measuring temperature along the injection well, measuring steam quality and injection rate at the inlet of the injection well, estimating the pressure distribution profile by using the data obtained, estimating steam injection profile by using the obtained pressure profile and injection rate combined with 1D injection well model for pressure losses in the wellbore and heat exchange between injection well tubing and annulus, using obtained steam injection profile as an input parameter for a set of 2D cross-sectional analytical SAGD models taking into account reservoir and overburden formation properties impact on production parameters and SAGD characteristics, estimation of SAGD process characteristics based on energy conservation law for condensed steam taking into account heat losses into the reservoir and overburden formation and hence the fluid production rate changing in time.