CTDirect System Increases Average ROP by 200% in Deep Tight-Gas Reservoirs
Published: 10/26/2017
CTDirect System Increases Average ROP by 200% in Deep Tight-Gas Reservoirs
Published: 10/26/2017
After introducing the CTDirect system, 8,620 ft were successfully drilled in a deep well with high temperatures. In the best run, the BHA drilled 1,400 ft [427 m] in 24 h, exceeding the field’s average TTRD ROP record by 200%.
Location
Middle East, Asia, Onshore
Details
Application
Underbalanced thru-tubing reentry drilling (TTRD)
Geology
Carbonate
Hole size
35/8 in
Total footage
8,620 ft [2,627 m]
Single-run footage
3,600 ft [1,097 m]
Dogleg severity
25°-35°/100 ft
Background
In the carbonate layer of an interbedded formation, an operator encountered wellbore stability and BHA sticking issues when drilling openhole laterals with nitrogen-enriched fluid.
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