Efficient, low‑risk sandstone acidizing stimulation

OneSTEP EF sandstone stimulation solution for production and injection wells

SLB brand art representation of OneSTEP
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Scalable, near-real-time insights of downhole stimulation events

During stimulation, missing or unexpected downhole events can lead to remedial operations, schedule delays, and lost production from a zone. WellWatcher Stim™ stimulation monitoring service helps teams optimize fracturing, acidizing, and other well operations by analyzing high-frequency pressure pulse data to rapidly detect and confirm downhole events near real time.

The service supports multiwell monitoring to identify well-to-well communication, enabling real-time decisions to minimize the detrimental effects of frac hits and stress shadowing.

See our other stimulation solutions

1

Optimized stage vs. multiple conventional stages

≤50%

Reduction in total fluid volume

2022

World Oil® finalist for Best Oilfield Fluids and Chemicals

WellWatcher Stim service is used during a wide range of completion and stimulation operations where rapid confirmation of downhole events is critical, including plug-and-perf operations, ball-drop and ball-seat confirmation, multistage hydraulic fracturing, diversion stimulation treatments, and real-time monitoring of offset wells to identify well-to-well communication during stimulation.

  • Plug-and-perf operations
  • Ball dropping and setting operations
  • Multistage fracturing operations
  • Diversion stimulation operations
  • Real-time multiwell monitoring of well-to-well communication

Improve treatment control, reduce rework, and protect offset wells

The service enables operators to optimize stimulation execution by confirming downhole events as they occur, reducing uncertainty during pumping operations. Early identification of missing or unexpected events helps minimize the need for remedial interventions and supports faster operational adjustments.

By detecting well-to-well communication and stress shadowing effects, WellWatcher Stim service helps protect offset wells and preserve planned completion strategies, while maintaining a minimal operational footprint and avoiding disruption to ongoing operations.

  • Optimizes stimulation operations by enabling rapid design changes to suit downhole conditions
  • Rapidly confirms downhole events such as actuation ball landing, frac sleeve opening, plug setting, fluid entry into the reservoir, and fluid diversion
  • Eliminates remedial operations at a later date by allowing immediate response to missing or unexpected events
  • Enables execution of the planned completion strategy by identifying stress shadowing and well-to-well communication events—such as frac hits—in real time

Purpose-built high-frequency analytics for stimulation operations

High-frequency pressure pulse data acquired at surface are analysed to detect and verify downhole stimulation events with high confidence. The service supports multiwell monitoring to identify communication between wells during stimulation and provides reliable event detection at depth, with field-proven performance in long horizontal wells.

How does this acid stimulation technology work?

OneSTEP EF solution is a single-stage, low-volume, easily deployed acid stimulation solution that removes damage caused by drilling fluids, clays, carbonates, and other aluminosilicates.

What does this stimulation treatment replace?

OneSTEP EF solution replaces conventional sandstone stimulation treatments such as mud acid with acid preflush.

How does OneSTEP EF improve sustainability?

OneSTEP EF solution reduces wellsite operating time and footprint, improves flowback efficiency, and lowers related emissions without compromising well production performance.