Is anyone consistently getting clean frac execution using HVFR at 1.2–1.8 gpt in about 180,[redacted]/L TDS produced water around Reeves County? I’m matching 20–25 ppt guar transport with less residue and seeing ~$35–50k pad savings on chemicals and water hauling, but I’d like real-world breaker/biocide tweaks that kept treating pressure stable after 30–40 stages…
We held pressure flat past 40 stages in Reeves by going with a “delayed APS + DTPA + THPS/DBNPA pulse” recipe and only nudging HVFR to 1.6–1.8 gpt on long slick stages. If your toe temp is >140°F, use encapsulated persulfate and dose a little chelant on the pad/flush so iron doesn’t eat your breaker and your treating pressure doesn’t yo-yo like a rodeo bull. If H2S/Fe spikes, swapping the DBNPA pulse to glutaraldehyde on the toe stages kept ours from drifting.
At about 180k TDS around Reeves we kept stages 30–45 boring by running glutaraldehyde/ADBAC continuous low-dose and shifting the breaker to the flush only — encapsulated percarbonate with a small TAED activator — while holding HVFR about 1.4–1.6 gpt for most of the stage… The two levers that killed pressure creep were iron/pH control; “keep pH 6.2–6.5” with a touch of acetic/citric made viscosity predictable and avoided the slump we saw at 1.2 gpt. What BHT are you seeing at perf, and would you trade a slice of that $35–50k pad saving for a small GLDA front-end to buffer Fe spikes?
I’d shift the bug program to a PAA batch at transfer (250–300 ppm) plus low THPS continuous, and park APS in the flush only; at about 180k TDS that kept treating pressure flat past “30–40 stages” without bumping dose past about 1.6 gpt. Add a touch of PBTC (10–20 ppm) and hold pH 7–7.5; iron stayed tied up and the FR held together mid‑pad. If slime shows after zipper pauses, hit a 5‑min PAA slug and it’s back to boring. @e_brooks34 did you try a pH hold instead of more chelant?