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BeneTerra News

We seek scientifically sound solutions for our clients. BeneTerra has aligned itself with top research organizations as part of our commitment to continuous improvement. Our staff is encouraged to take leadership roles in their respective fields of endeavour to produce meaningful research.

January2014

BeneTerra acquires Evaporative Systems

SHERIDAN, Wyo. (January 30, 2014) – BeneTerra, the Sheridan-based water and land management firm serving energy, industrial, agricultural and municipal clients throughout the U.S. and Australia, announced today that it has acquired New Mexico-based Evaporative Systems.  
 
 
June2013

Top five misconceptions about topsoil

This article describes what topsoil is and is not. 

The term “topsoil” is used widely, often reverentially, by people referring to the value of Australia’s soils. The following are the top five misconceptions about topsoil and its role as a resource:

March2013

BeneTerra named new technology finalist for Oil & Gas Awards

BeneTerra was selected as a New Technology finalist in the Rocky Mountain Region for this year’s Oil & Gas Awards.  Finalists are chosen by a panel of distinguished peers in the energy industry.

Last year, BeneTerra was named the Water Management Company of the Year in the Rocky Mountain Region by the Oil & Gas Awards, in recognition of its innovative solutions in water and land management, as well as environmental due diligence. Since 2003, BeneTerra has treated and dispersed more than seven billion gallons of CSG water through irrigation in the Rocky Mountain Region.

 

March2013

Computer simulation of subsurface drip irrigation using coalbed methane produced waters

Development of coalbed methane (CBM) as an energy resource typically requires extraction of large volumes of water from underground coal seams. In the semiarid Powder River Basin of Wyoming and Montana, some of the CBM water is put to beneficial use through use for irrigation. Careful management is necessary due to elevated conductivites (2-3 mS/cm), high sodium adsorption ratios (SAR = 20-50) and sodium-bicarbonate composition of the water. One management strategy is deep subsurface drip irrigation (SDI), where drip tapes are placed ~92 cm below the surface in conjunction with a deep-rooted crop like alfalfa. CBM water is acidified to reduce alkalinity prior to application and is applied to fields year-round.

March2013

BeneTerra named “Water Management Company Of The Year”

On March 12th, 2013 BeneTerra was named the 2012 “Water Management  Company of the Year” for the Rocky Mountain region by the Oil and Gas Awards Committee which is comprised of organisations and jour2013 O&G Awardnals supporting the industry. The award recognizes organisations that provide water management services to the upstream sector of the oil and gas industry. It also acknowledges water management companies that demonstrate the ability to provide innovative solutions in the areas of storage, transportation, treatment, and disposal. Considerations are also made for environmental due diligence. Since 2003 BeneTerra has treated and dispersed more than 27,000 ML CSG water through irrigation in the Rocky Mountain region.

February2013

Two new studies published on BeneTerra subsurface drip irrigation with coal seam gas water

Carleton Bern of the US Geological Survey was the lead author on a two-part paper covering 1) water and solute movement and 2) geochemistry beneath BeneTerra’s longest operating deep subsurface drip irrigation system. The articles appear in the February 2013 issue of Agricultural Water Management. These can be accessed at Science Direct or by email request to BeneTerra. 

http://www.sciencedirect.com/science/article/pii/S0378377412003071

 
Produced wastewater evaporation services - Beneterra

installing deep drip irrigation tubing to 90 cm (36-in)

February2013

Deep subsurface drip irrigation using coal-bed sodic water: Part II. Geochemistry

Agricultural Water Management      AWN

Volume 118, February 2013, Pages 135–149

  • a Crustal Geophysics and Geochemistry Science Center, U.S. Geological Survey, Denver Federal Center, Denver, CO, USA
  • b National Research Program, U.S. Geological Survey, Denver Federal Center, Denver, CO, USA
  • c BeneTerra LLC,  Sheridan, WY, USA

Abstract

Waters with low salinity and high sodium adsorption ratios (SARs) present a challenge to irrigation because they degrade soil structure and infiltration capacity. In the Powder River Basin of Wyoming, such low salinity (electrical conductivity, EC 2.1 mS cm−1) and high-SAR (54) waters are co-produced with coal-bed methane and some are used for subsurface drip irrigation (SDI). The SDI system studied mixes sulfuric acid with irrigation water and applies water year-round via drip tubing buried 92 cm deep. After six years of irrigation, SAR values between 0 and 30 cm depth (0.5–1.2) are only slightly increased over non-irrigated soils (0.1–0.5). Only 8–15% of added Na has accumulated above the drip tubing. Sodicity has increased in soil surrounding the drip tubing, and geochemical simulations show that two pathways can generate sodic conditions. In soil between 45-cm depth and the drip tubing, Na from the irrigation water accumulates as evapotranspiration concentrates solutes. SAR values >12, measured by 1:1 water–soil extracts, are caused by concentration of solutes by factors up to 13. Low-EC (<0.7 mS cm−1) is caused by rain and snowmelt flushing the soil and displacing ions in soil solution. Soil below the drip tubing experiences lower solute concentration factors (1–1.65) due to excess irrigation water and also contains relatively abundant native gypsum (2.4 ± 1.7 wt.%). Geochemical simulations show gypsum dissolution decreases soil-water SAR to <7 and increases the EC to around 4.1 mS cm−1, thus limiting negative impacts from sodicity. With sustained irrigation, however, downward flow of excess irrigation water depletes gypsum, increasing soil-water SAR to >14 and decreasing EC in soil water to 3.2 mS cm−1. Increased sodicity in the subsurface, rather than the surface, indicates that deep SDI can be a viable means of irrigating with sodic waters.

Keywords:Gypsum;PHREEQCPowder River Basin, WyomingSodium adsorption ratio; Sulfuric acid

 

Published by Elsevier B.V.

Science Direct

 

February2013

Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement

agricultural water managementAgricultural Water Management

Volume 118, February 2013, Pages 122–134

  • Carleton R. Berna
  • George N. Breita
  • Richard W. Healyb
  • John W. Zupancicc
  • Richard Hammackd
  1. Crustal Geophysics and Geochemistry Science Center, U.S. Geological Survey, Denver Federal Center, Denver, CO, USA
  2. National Research Program, U.S. Geological Survey, Denver, CO,  USA
  3. BeneTerra, LLC., Sheridan, WY 82801, USA
  4. National Energy Technology Laboratory, Pittsburgh, PA, USA