DIAL can be applied in several gas lift production completion styles to optimize gas lift production from single and multi-zone reservoirs in onshore, offshore and subsea environments.
|Single String||DIAL gas lift units strategically spaced to enable unload and life-of-well lift gas optimization. DIAL sensing units included to provide bottom-hole flowing pressure optimization reference.|
|Dual String||DIAL gas lift units in each production string enable complete and independent monitoring and control of both strings. DIAL sensing units between producing zones inform production management decisions.|
|Retrofit||Currently in the concept phase, DIAL gas lift and sensing units are installed in existing well without workover.|
|In-situ||DIAL gas lift units control flow of lift gas from an in-situ gas formation to the tubing string negating the need to provide lift gas from surface.|
At the system level, DIAL adds value on ten dimensions.
In comparison to existing gas lift technology, DIAL overcomes six primary application challenges to increase production by up to 40%, dependent on application type:
|Gas Lift Challenge||DIAL Advantage|
|70-year-old technology, mechanically driven and sensitive to well conditions||Digitally controlled from surface, independent of well pressure and temperature|
|Inability to change gas injection rate or depth without well intervention||Continuous production optimization without intervention|
|No in-well data to assess lift gas injection depth or rate||Sensors monitoring injection depth, rate, pressure and temperature enables continuous analysis of well performance|
|Bellows operated valves with potential for multipoint injection and chatter induced valve failure||Surface controlled digital valves with open/close status confirmation|
|Industry standard IPO Valves require a pressure step down for each station along the production string reducing gas lift efficiency||Fully use available gas injection pressure allowing deeper injection for increased production|
|Deployment deviation limit of 60° for wireline access. Greater inclination requires expensive tractor intervention||Can be deployed at high well inclination|