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JS WasteMgt techniques for oil and gas.pptx
- 1. WellSite Services Planning A Waste Management Program
- 2. WellSite Services Planning a Waste Management Program • Review well program with Customer ‒ Drilling program ‒ Fluid Program ‒ Disposal criteria (legislative and/or customer’s) • Determine waste streams and their volume… ‒ Cuttings ‒ Drilling fluid ‒ Waste water • Rig Audit • Define management controls ‒ Based upon ISO9000, and ISO14001 principles ‒ Reporting and operation procedure ‒ Performance criteria (e.g. cost/bbl, cost/ft) • End of well reporting ‒ Feedback for future improvement
- 3. WellSite Services Drilling Waste Management Options OPTION 1 – AUGERS AND BULK TIPPERS
- 4. WellSite Services Drilling Waste Management Options, Cont’d OPTION 2 – AUGERS, CUTTINGS DRYER, SKIPS
- 5. WellSite Services Drilling Waste Management Options, Cont’d CUTTING SKIPS DEWATERING SYSTEM CENTRIFUGES OPTION 3 - AUGER, SKIPS, DEWATERING UNIT
- 6. WellSite Services Drilling Waste Management Options, Cont’d WBM WASTE PIT VACUUM STATIONS LOCATED AT: •RIG FLOOR •CELLAR AREA •MUD PUMP AREA •ENGINE ROOM AREA
- 7. WellSite Services Independent Centrifuge Skid, if Required
- 8. WellSite Services • After drying, cuttings can be: • Encapsulated and buried (solidification) • Used for road and location base (can be encapsulated for this as well) • Injected into suitable formation (CRI) • Land-farmed, if salt content allows • Mixed with cement and made into artificial reef structures (Reef Balls) Cuttings Disposal Options
- 9. WellSite Services Pit Solidification • Cuttings are encapsulated in cement to prevent the leaching of salt and other contaminants into the soil. • Encapsulation cells are lined with 6” of neat cement, then cuttings are added. Cuttings and cement are mixed to 15-20%/volume in Pug Mill and added to cell. • Testing normally follows the LSO 29-b regulations on Disposal of Non- Hazardous Waste. Results • Almost all wastes can be disposed of in this manner • On or near-site option for treatment and disposal of drilling waste. • Can be a relatively inexpensive process.
- 10. WellSite Services Solidification Testing Per LSO 29-b 09/05/98 09/10/98 09/15/98 09/20/98 09/25/98 09/30/98 pH - 6 to 12 9.97 8.13 10.49 10.4 11.28 5.7 Arsenic Total mg/l 0.5 0.0001 0.0002 0.0001 <0.001 <0.001 <0.001 Barium mg/l 10.0 3.33 3.89 3.46 4.09 3.56 3.41 Lead Total mg/l 0.5 0.177 0.193 0.139 0.172 0.119 0.134 Cadmium mg/l 0.1 0.019 0.028 0.017 0.019 0.013 0.051 Chromium, Total mg/l 0.5 0.106 0.122 0.206 0.155 0.158 0.077 Mercury, Total mg/l 0.02 0.01 0.007 0.0002 0.003 0.006 0.006 Selenium mg/l 0.1 <0.001 0.001 0.004 <0.001 <0.001 <0.001 Zinc, Total mg/l 5.0 0.131 0.394 0.113 0.136 0.121 0.085 Chloride mg/l - 650 800 1350 1050 1000 1450 Fat, Oil and Grease mg/l < 10.0 7.2 4.2 6 8.2 7.5 7 Parameter Units L-29B Limit Solidified Cell