New Tracers Identify Hydraulic Fracturing Fluids and Accidental Releases from Oil and Gas Operations - BRGM - Bureau de recherches géologiques et minières Access content directly
Journal Articles Environmental Science and Technology Year : 2014

New Tracers Identify Hydraulic Fracturing Fluids and Accidental Releases from Oil and Gas Operations

Abstract

Identifying the geochemical fingerprints of fluid that return to the surface after high volume hydraulic fracturing of unconventional of oil and gas reservoirs has important application for assessing hydrocarbon resource recovery, environmental impacts, and wastewater treatment and disposal. Here, we report for the first time, novel diagnostic elemental and isotopic signatures (B/Cl, Li/Cl, delta B-11, and delta Li-7) useful for characterizing hydraulic fracturing flowback fluids (HFFF) and distinguishing sources of HFFF in the environments. Data from 39 HFFFs and produced water samples show that B/Cl (>0.001), Li/Cl (>0.002), delta B-11 (25-31 parts per thousand) and delta Li-7 (6-10 parts per thousand) compositions of HFFF from the Marcellus and Fayetteville black shale formations were distinct in most cases from produced waters sampled from conventional oil and gas wells. We posit that boron isotope geochemistry can be used to quantify small fraction (similar to 0.1%) of HFFF in contaminated fresh water and likely be applied universally to trace HFFF in other basins. The novel environmental application of this diagnostic isotopic tool is validated by examining the composition of effluent discharge from an oil and gas brine treatment facility in Pennsylvania and an accidental spill site in West Virginia. We hypothesize that the boron and lithium are mobilized from exchangeable sites on clay minerals in the shale formation during the hydraulic fracturing process resulting in the relative enrichment of boron and lithium HFFF.

Domains

Earth Sciences
No file

Dates and versions

hal-01176397 , version 1 (15-07-2015)

Identifiers

Cite

N. R. Warner, T. H. Darrah, R.B. Jackson, Romain Millot, Wolfram Kloppmann, et al.. New Tracers Identify Hydraulic Fracturing Fluids and Accidental Releases from Oil and Gas Operations. Environmental Science and Technology, 2014, 48 (21), pp.12552-12560. ⟨10.1021/es5032135⟩. ⟨hal-01176397⟩

Collections

BRGM BRGM-DO
31 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More