Cascade3 signi?cantly improves long-term performance of water injection wells, extending well life and increasing overall ?eld production.
In conventional reservoirs, a signi?cant portion of oil production is driven by water injection into sand prone reservoirs. Water?ooding, whether applied at ?eld start-up or as a secondary recovery technique, can increase production rates and boost oil recovery by
maintaining pressure and ensuring a more effective sweep of the reservoir.
In heterogeneous reservoirs and unconsolidated formations with ?ne or poorly sorted sands, loss of injectivity is commonly associated with sand ?ll in the wellbore. These premature failures of water injection wells result in lower reservoir pressure, higher gas/oil ratio
In water injection wells, sand production occurs in the periods immediately following injection shut-down because of back?ow, cross?ow between zones or wells, and water hammer effects. Conventional sand control techniques which perform well in steady state production are not designed to control transient sand production and cannot always be effective in water injection applications.
Cascade3 technology provides a unique solution to these problems by isolating ?uid in the completion annulus and locking injection water into the formation to eliminate the transport mechanism for sand production entirely. The result is increased injection reliability providing ongoing water?ooding without costly re-drills or frequent well clean-outs.
Features
-Simple design and installation
-Radially mounted in screen base pipe with no e?ect on OD / ID
-10,000BWPD injection per joint
-Compatible with gravel pack and standalone screen completions
Bene?ts
-Eliminates cross?ow reducing screen erosion
-Eliminates back?ow and ?nes movement into the wellbore
-Prevents water hammer e?ects
-Improves injectivity and reservoir sweep
-Extends water injector life
Failure mechanisms can result in a number of negative outcomes, limiting production, and ultimately reducing well life. Cascade3 eliminates these failure mechanisms.
Conventional Sand Control Challenges
1 – Water Hammer
2 – Cross?ow
3 – Back?ow
Cascade3 Solution
By preventing sand production, Cascade3 extends injection well life resulting in more oil production and greater recovery
Cascade3 Technology
High density of ?ow control valves mounted within conventional sand screens allows high water injection rates while increasing sand control reliability and maintaining injectivity over time.
石油圈
