scholarly journals Reducing the Scaling Potential of Oil and Gas Produced Waters with Integrated Accelerated Precipitation Softening and Microfiltration

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Jonathan Brant ◽  
Dongmei Katie Li ◽  
Jennifer Hegarty
Keyword(s):  
Oil And Gas ◽  
Scaling Potential ◽  
Produced Waters

Fit-for-purpose treatment goals for produced waters in shale oil and gas fields

2020 ◽  
Vol 173 ◽  
pp. 115467 ◽  
Author(s):  
Christian L. Coonrod ◽  
Y. Ben Yin ◽  
Ty Hanna ◽  
Ariel J. Atkinson ◽  
Pedro J.J. Alvarez ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Treatment Goals ◽  
Shale Oil ◽  
Oil And Gas Fields ◽  
Fit For Purpose ◽  
Produced Waters ◽  
Gas Fields

scholarly journals Increasing efficiency of work of a liquid-gas ejector

2019 ◽  
Vol 20 (3) ◽  
pp. 254-260 ◽  
Author(s):  
Alexander N. Drozdov ◽  
Yana A. Gorbyleva ◽  
Evgenia I. Gorelkina ◽  
Nikolay A. Drozdov
Keyword(s):  
Aqueous Solutions ◽  
Energy Exchange ◽  
Oil And Gas ◽  
Oil Refining ◽  
Working Fluid ◽  
Salt Composition ◽  
Coal Deposits ◽  
Ejector Nozzle ◽  
Produced Waters ◽  
Oil Gas

The proposed solution relates to fluidics and can be used, for example, in the extraction of oil and gas, the collection and preparation of oil, gas and water, the extraction of methane from methane beds, oil refining. The technical result is to increase the efficiency of a liquid-gas ejector by ensuring its work in the field of rational concentrations and salt composition, in which the intensification of energy exchange between the working fluid and the ejected gas is achieved. The essence of the proposed solution: the method of operation of a liquid-gas ejector involves injecting a working fluid with a power pump into the ejector nozzle, pumping gas with an ejector, creating, dispersing and increasing the pressure of a gas-liquid mixture with an ejector using aqueous solutions of salts as a working fluid. The values of the concentration and composition of salts in the working fluid are maintained within the range of rational concentrations and composition of salts, in which increased values of the efficiency of the ejector are achieved. Salts are added to the weakly mineralized aqueous solutions, and the highly mineralized aqueous solutions are diluted with fresh water. As the working fluid, the formation and/or incidentally produced waters of oil, gas, gas condensate and methane-coal deposits, which are aqueous solutions of salts, are used if the composition and concentration of salts in the produced and/or incidentally produced waters are within the range of rational concentrations and composition of salts in which provides an increase in the efficiency of the ejector. The boundaries of the field of rational concentrations and salt composition are preliminarily determined by laboratory bench studies.

scholarly journals Evaluation of a Minimum Liquid Discharge (MLD) Desalination Approach for Management of Unconventional Oil and Gas Produced Waters with a Focus on Waste Minimization

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2912
Author(s):  
Ganesh L. Ghurye
Keyword(s):  
Solid Waste ◽  
Oil And Gas ◽  
Liquid Waste ◽  
Delaware Basin ◽  
Liquid Discharge ◽  
Thermal Desalination ◽  
Unconventional Oil And Gas ◽  
Produced Waters ◽  
Insoluble Compounds ◽  
The Cost

The objective of this research study was to evaluate the feasibility of using a minimum liquid discharge (MLD) desalination approach as an alternate management option for unconventional produced waters (PWs) with a focus on minimizing the generation of solid waste. The feasibility of MLD was evaluated using OLI, a water chemistry software, to model thermal desalination of unconventional PWs from the Delaware Basin in New Mexico (NM). Desalination was theoretically terminated at an evaporation point before halite (NaCl) saturation in the residual brine. Results of this study showed that selectively targeting a subset of higher flow rate and lower TDS wells/centralized tank batteries (CTBs) could yield up to 76% recovery of distillate while generating minimal solid waste. Using a selective MLD approach did reduce the quantity of distillate recovered when compared with ZLD, and left a reduced volume of residual brine which has to be managed as a liquid waste. However, selective MLD also greatly reduced the amount of solid waste. The use of a ZLD approach yielded incrementally greater quantities of distillate but at the cost of large quantities of difficult-to-manage highly soluble waste. Simulation results showed that waste generated before NaCl precipitation was primarily composed of insoluble compounds such as calcite, barite and celestite, which can be disposed in conventional landfills. This study also found a simple empirical linear relationship between TDS and distillate recovery, thus allowing a non-expert to rapidly estimate potential distillate recovery for a given starting PW quality.

scholarly journals Desalination of Produced Water by Membrane Distillation: Effect of the Feed Components and of a Pre-treatment by Fenton Oxidation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Francesco Ricceri ◽  
Mattia Giagnorio ◽  
Giulio Farinelli ◽  
Giulia Blandini ◽  
Marco Minella ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Membrane Distillation ◽  
Fenton Oxidation ◽  
Produced Waters ◽  
Pre Treatment ◽  
High Concentrations ◽  
Membrane Wetting ◽  
By Products

Abstract The treatment of produced waters (by-products of oil and gas extraction) with the innovative process of membrane distillation is challenging, because these highly saline streams contain high concentrations of organic compounds and hydrocarbons that cause membrane wetting and impairment of performance. To design the most compact treatment scheme and with the aim of obtaining an easier management of produced water for reuse purposes, Fenton oxidation is here investigated as a feed pre-treatment that may produce an effluent easily handled by membrane distillation. In high-recovery membrane distillation tests, we systematically investigate the detrimental effects of individual contaminants in a synthetic produced water mimicking the composition of a real sample. The recovery rate depends strongly on the initial salinity, which eventually causes scaling and pore blocking. Surfactants are found to be mainly responsible for membrane wetting, but volatile and hydrophobic organics also spoil the quality of the product water. A Fenton oxidation pre-treatment is thus performed to degrade the target organics, with the aim of enhancing the effectiveness of the following membrane distillation and to improve the quality of the final product. The combined oxidation-membrane distillation scheme has both advantages and limitations, which need to be carefully evaluated and further investigated.

scholarly journals Novel Photocatalytic Reactor Development for Removal of Hydrocarbons from Water

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
Morgan Adams ◽  
Ian Campbell ◽  
Peter K. J. Robertson
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Oil And Gas Industry ◽  
Rotating Drum ◽  
Gas Industry ◽  
Photocatalytic Reactor ◽  
Hydrocarbon Content ◽  
Produced Waters ◽  
Offshore Oil And Gas ◽  
Offshore Oil

Hydrocarbons contamination of the marine environment generated by the offshore oil and gas industry is generated from a number of sources including oil contaminated drill cuttings and produced waters. The removal of hydrocarbons from both these sources is one of the most significant challenges facing this sector as it moves towards zero emissions. The application of a number of techniques which have been used to successfully destroy hydrocarbons in produced water and waste water effluents has previously been reported. This paper reports the application of semiconductor photocatalysis as a final polishing step for the removal of hydrocarbons from two waste effluent sources. Two reactor concepts were considered: a simple flat plate immobilised film unit, and a new rotating drum photocatalytic reactor. Both units proved to be effective in removing residual hydrocarbons from the effluent with the drum reactor reducing the hydrocarbon content by 90% under 10 minutes.

scholarly journals Oilfield Produced Water Management: Treatment, Reuse and Disposal

2012 ◽  
Vol 9 (1) ◽  
pp. 124-132 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Water Injection ◽  
Oxygen Depletion ◽  
Low Levels ◽  
Produced Waters ◽  
Water Cut ◽  
Basic Features ◽  
Lead Nickel ◽  
Guide Lines

Produced water is accompanied with the production of oil and gas especially at the fields producing by water drive or water injection. The quantity of these waters is expected to be more complicated problem with an increasing in water cut which is expected to be 3-8 barrels water/produced barrel oil.Produced water may contain many constituents based on what is present in the subsurface at a particular location. Produced water contains dissolved solids and hydrocarbons (dissolved and suspended) and oxygen depletion. The most common dissolved solid is salt with concentrations range between a few parts per thousand to hundreds parts per thousand. In addition to salt, many produced waters also contain high levels of heavy metals like zinc, barium, chromium, lead, nickel, uranium, vanadium and low levels of naturally occurring radioactive materials (NORM).This study will highlight the main aspects of the different international experiences with the produced water treatment for subsequent reuse or disposal. These different treatment methods vary considerably in effectiveness, cost and their environmental impacts. Samples of produced water from Al-Mishrif formation in ten wells belongs to five fields southern Iraq were taken and analyzed chemically to define the basic features of these waters and to have guide lines for the best strategy that required handling the increased water cut in these fields.

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