Most wellbore strengthening additives do one job. RiDrill WS-1 is a patent-pending dual-mechanism strengthener that props the fracture and then builds a low-permeability membrane across the formation — so you can drill at lower equivalent circulating densities without giving up stability or strength.
Riteks Oilfield Solutions · Drilling Fluids
Weak and depleted zones are where the drilling window closes. The shale wants mud weight; the sand next to it can't carry it. Guess wrong and it shows up the way it always does — losses, non-productive time, and remedial work on a section that should have been routine.
Conventional wellbore strengthening answers that with bridging: sized particles wedge into the fracture mouth and hold it propped, raising the pressure the formation can carry. It works, and it is only half of what a weak zone needs.
RiDrill WS-1 bridges like a conventional strengthener, then keeps going. Step through both mechanisms below.
Forms a low-permeability membrane across the formation to strengthen the wellbore and mitigate losses.
Running a weak or depleted section this quarter?
Request a sampleRecommended loading runs 3 to 10 lb/bbl. Enter your active system volume and slide to the loading you plan to run.
Planning figure only — confirm loading for your fluid system and hole conditions with Riteks technical services.
RiDrill WS-1 is a dry grey powder that is compatible with most muds. Pick a system to see how it lands.
Brine — compatible. RiDrill WS-1 runs at 3 to 10 lb/bbl and holds performance at 350°F+ (177°C+), with customizable rheology and enhanced hole cleaning.
Strengthening the zone and curing an active loss are two different jobs. RiDrill WS-1 pairs with the Riteks LCM line so you can do both in the same fluid system — strengthen the formation, then treat the loss with Legion-LCM, Saber-LCM, or the rest of the Riteks lost circulation portfolio.
It combines a mechanical membrane that forms across the formation to strengthen the wellbore and mitigate losses with a secondary strengthening matrix that takes strengthening further, improving fracture gradients in weak or depleted zones.
What loading should I run?Recommended loading levels are 3 to 10 lb/bbl. Riteks technical services can help you land on a figure for your fluid system and hole conditions.
How hot can it run?RiDrill WS-1 is stable at 350°F+ (177°C+).
Which mud systems is it compatible with?It is compatible with most muds, including brine, water-based mud, and oil-based mud.
Can it be combined with lost circulation material?Yes. RiDrill WS-1 pairs with Riteks LCMs to treat severe losses.
Does it help with gas migration?It aids in the prevention of gas migration, and its customizable rheology supports enhanced hole cleaning.
Request a sample, pull the technical documents, or talk the section through with the Riteks drilling fluids team.