Patent · US Active

Steam anti-coning/cresting technology ( SACT) remediation process

US9328592B2 · kind B2 · utility

0Cited by

15References

14Claims

0Family size

Assignee

NEXEN ENERGY ULC · CA

Inventors

Richard Kerr · Davis, US
Peter Yang · Taichung, TW

Key dates

Filing date	May 8, 2013
Grant date	May 3, 2016
Priority date	—
Expiry date	Nov 11, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B43/2408
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A cyclic remediation process to restore oil recovery from a primary oil production well that has watered off from bottom water encroachment (cone or crest) whereby: (a) the primary oil production well has a produced water cut in excess of 95% (v/v); (b) the oil is heavy oil, with in-situ viscosity >1000 cp; wherein the process includes: (c) injecting a steam slug with a volume of 0.5 to 5.0 times the cumulative primary oil production, with steam volumes measured as water volumes; (d) shutting in the well for a soak period, after the steam injection is complete; and (e) producing the well until the water cut exceeds 95%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.