Running Casing and Completions
Target Depth on the First Attempt
Micro-doglegs, ledges and debris stop casing, liners and completions short of target depth, and an off-depth landing costs you zonal isolation, a remedial trip, or a sidetrack. DTI offers solutions for both ends of the problem: conditioning the hole while you drill, and then providing a powered reamer shoe at the end of the casing assembly so your string gets to depth on the first attempt.
Challenge
The hole you drilled is the hole your casing has to run through. Casing is stiffer than the BHA, and it will not follow the same path.
A single tight spot is enough to obstruct casing to bottom.
Lands You Off Depth
Tight spots, ledges and debris stop casing or completions before target depth, which compromises your well design and zonal isolation.
Costs you a Remedial Trip
A stuck string or a failed run means pulling out, washing or reaming, and running again resulting in unplanned & unbudgeted rig time.
Risks a Sidetrack
In the worst case an obstructed wellbore forces a sidetrack, which adds weeks and millions of Dollars to the final well expenditure.
Root Causes
Addressing the Root Causes
A string that stops short is almost never a casing problem. It is the hole, the debris in it, and the weight you have left to push with. DTI targets all three, before the run and during it.
Micro-Doglegs
Casing is stiffer than the BHA that drilled the hole. A path your string managed is not a path your casing will follow.
Ledges and Tight Spots
Formation transitions and borehole upsets leave shoulders that stop a string dead, often within a few hundred feet of target depth.
Cuttings Beds and Debris
Solids settled on the low side of the lateral pack up ahead of the shoe and build a plug your casing cannot push through.
Drag and Lost Available Weight
The longer the lateral, the more of your set-down weight goes into friction. What arrives at the shoe is not enough to push on.
Helical Buckling of the Work String
Push harder on a string that cannot rotate and it buckles, so the weight you add goes into the wellbore wall instead of down to the shoe.
Solutions
Run Casing and Completions to Depth with DTI’s Technologies
Drill-N-Ream®
Ultimate Wellbore Conditioning Tool
Reduce torque and drag, extend your lateral reach, and eliminate the need for dedicated reamer runs.
Dome Hybrid Reamer
Stabilize & Ream on Demand
A dual-function tool that stabilizes the BHA during normal drilling and reams on demand, reaming when you need it.
TurboCaser®
High-Speed Reaming System
A pass-through, turbine-powered reamer shoe system that lands casings and intermediate liners at target depth, no string rotation required.
TurboRunner®
Completion Running System
Turbine-powered reaming that lands completions, liners, and casings at target depth, gentle on delicate and intelligent strings.
MechLok®
Lockable Drill Pipe Swivel
Mechanically lockable swivel that rotates pipe above the liner, reducing drag and buckling to push completions to depth.