RE: Radial Jet Drilling10 May 2026 14:44
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Documented Field Results: Radial Jet Drilling (Radial Laterals)
Radial Jet Drilling (RJD) has been tested in multiple onshore fields since the 1990s, particularly in mature, low-permeability oil reservoirs where conventional stimulation is uneconomic or impractical. Operator case studies demonstrate that RJD can significantly increase initial well productivity, though results vary:
Tarim Basin (K Field, China) – A 2012 RJD program in a shallow low-permeability siltstone reservoir revitalized an aging onshore oil field. By jetting multiple small-diameter (~2-in) laterals from existing wells, the operator achieved close to a 300% increase in production rates, tripling output4. This showed RJD as a viable low-cost alternative for boosting the productivity of thin, low-perm pay zones that had been underperforming with conventional vertical completions4.
Belayim Land Field (Sinai, Egypt) – RJD was applied by Petrobel (ENI) in early 2000s on three vertical wells producing from thin multi-layered sandstone intervals with modest porosity (~20%) and low to moderate permeability. Initial responses ranged from +30–80% jumps in gross oil rate (e.g., one well rose from 252 to 346 BOPD, ~+37%2, and another from 472 to 818 BOPD, ~+73%2). However, longer-term outcomes differed: one well sustained a ~30% net oil gain for ~1 year before declining while remaining above pre-job levels2; another saw a rapid post-RJD decline such that output fell below the pre-job baseline within months (attributed to high heterogeneity and reservoir depletion)2. Lesson: RJD can revive depleted zones temporarily, but benefits depend on reservoir quality – optimal in moderately pressured, continuous layers, whereas results are limited if the lateral intersects poor-quality or depleted rock.
Permian Basin (New Mexico, USA) – In 2015–2016, two trial wells in the Grayburg/San Andres formation (a low-permeability dolomitic reservoir) were stimulated with multiple coiled-tubing laterals using a mechanical short-radius drilling tool (an RJD alternative). One well with 12 laterals across 3 intervals achieved ~+40% oil rate increase1, while another with 15 laterals in an untapped zone saw ~+47% production rise1. Simulation models predicted that four 30-ft laterals per zone could yield ~28–33% incremental production (roughly in line with a ~20–30% recovery improvement in targeted zones)1. These trials confirmed that radial laterals in low-perm fields can appreciably boost output, though the absolute gains (under 2× in these cases) were more modest than some earlier RJD reports. Notably, the mechanical lateral method successfully overcame RJD’s known challenges (e.g. controlling lateral trajectory and penetrating harder rock) and validated the concept’s feasibility1.