scholarly journals Hydrogeochemical Characteristics and Water–Rock Interactions of Coalbed-Produced Water Derived from the Dafosi Biogenic Gas Field in the Southern Margin of Ordos Basin, China

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Yuan Bao ◽  
Chao An ◽  
Chaoyong Wang ◽  
Chen Guo ◽  
Wenbo Wang
Keyword(s):  
Produced Water ◽  
Ordos Basin ◽  
Atmospheric Precipitation ◽  
Principal Component ◽  
Total Dissolved Solids ◽  
Water Type ◽  
Dissolved Solids ◽  
Gas Field ◽  
Biogenic Gas ◽  
Coal Organic Matter

The hydrogeochemical characteristics of coalbed-produced water can provide insights into the sources of ions and water, the groundwater environments, hydrodynamic conditions, and water-rock interactions of depositional basins. To study the water-rock reaction process and reveal whether there is a microbial activity in the groundwater, a case of the Dafosi biogenic gas field was chosen by testing the ionic concentrations and hydrogen and oxygen isotopic compositions of coalbed-produced water and employing R-type cluster and principal component analyses. The results showed that Na+, Cl − , and HCO3- are the principal ions in the coalbed-produced water, while the water type is mainly a Na–Cl. Due to the hydrolysis of HCO3-, the pH in this region was controlled primarily by HCO3-. As the main cation in water, Na+ contributed substantially to the total dissolved solids. Na+ is also related to the exchange between rock-bound Na+ and Ca2+ and Mg2+ in water or surrounding rocks. The coalbed-produced water’s oxygen isotopes displayed a characteristic 18O drift and enrichment, indicating that the 16O isotope in the water was preferentially exchanged with the coal organic matter. Early evaporation is also contributed to the enrichment of TDS (total dissolved solids) and 18O in the water. The central part of the study area, including the Qijia anticline, was affected by the Yanshanian uplift and denudation and subsequently developed a water-conducting fissure zone and was recharged atmospheric precipitation; these conditions were conducive to the formation of secondary biogenic gas.

Removal of fluoride and total dissolved solids from coalbed methane produced water with a movable ultra-low pressure reverse osmosis system

2012 ◽  
Vol 51 (22-24) ◽  
pp. 4359-4367 ◽  
Author(s):  
Xiaoning Liu ◽  
Zhengyi Hu ◽  
Chunyou Zhu ◽  
Guoqi Wen ◽  
Xianchao Meng
Keyword(s):  
Reverse Osmosis ◽  
Coalbed Methane ◽  
Produced Water ◽  
Low Pressure ◽  
Total Dissolved Solids ◽  
Dissolved Solids

scholarly journals Hydrochemistry of Groundwater in Northeast Part of Anbar Governorate – West of Iraq

2019 ◽  
Vol 16 (1) ◽  
pp. 0088
Author(s):  
Hussein Ilaibi Zamil Al-Sudani
Keyword(s):  
Electrical Conductivity ◽  
Groundwater Quality ◽  
Total Dissolved Solids ◽  
Water Type ◽  
Hydrochemical Parameters ◽  
Dissolved Solids ◽  
Drinking Purposes ◽  
Groundwater Samples ◽  
Geological Formation ◽  
Continental Origin

A groundwater quality assessment has been carried out in northeast part of Anbar governorate in western Iraq. We analyzed hydrochemical parameters such as pH, electrical conductivity, total dissolved solids presence of ions to describe groundwater quality. The study area has the only confined aquifer within the geological formation extended in area. Values of groundwater hydrochemical parameters were ranged from (7) to (7.9) for ph, (1599) to (6800) µmhos/cm for electrical conductivity (EC) and (1048) to (4446) mg/l for total dissolved solids (TDS). The origins and types of groundwater in the area were of marine origin and MgCl2 water type while only (6) samples were of continental origin and Na2SO4 water type. Groundwater utilization indicated that it can't be used for drinking purposes, while few groundwater wells can be used for agricultural and (33) groundwater samples can be used for animal purposes. However, the nature of the soil in the area and the depth of the groundwater qualified water for agricultural uses in significant and wide ranges.

Optimization of Apparent Peak Viscosity in Carboxymethyl Cellulose Fracturing Fluid: Interactions of High Total Dissolved Solids, pH Value, and Crosslinker Concentration

SPE Journal ◽  
2016 ◽  
Vol 22 (02) ◽  
pp. 615-621 ◽  
Author(s):  
N. E. Pica ◽  
C.. Terry ◽  
K.. Carlson
Keyword(s):  
Carboxymethyl Cellulose ◽  
Oil And Gas ◽  
Produced Water ◽  
Ph Value ◽  
Total Dissolved Solids ◽  
Dissolved Solids ◽  
Service Companies ◽  
Polymer Loading ◽  
Crosslinker Concentration ◽  
Reducing Costs

Summary It has been common practice to use a freshwater source (either ground water or surface water) as the base fluid for hydraulic fracturing with crosslinked-gel fluids. Currently, oil and gas operators are beginning to reuse and recycle the main byproduct of oil extraction, which is produced water. However, because of the high variability of produced-water quality (temporal and spatial), and the high content of total dissolved solids (TDS), the viscosity targets for the fluid can be difficult to achieve. The research described in this paper examines the sensitivity of higher-salinity waters to several variables related to the gel-formation process. The polymer used for the gel fluid was a carboxymethyl cellulose (CMC) derivative, and zirconium (Zr) was used as the crosslinking metal. Rheology experiments were conducted at different pH values, polymer loading, and crosslinker concentrations. The outcome of this research is presented in 3D contour-peak-viscosity maps that can be used by oil and gas operators and service companies to optimize the chemicals that are applied, thus reducing costs.

scholarly journals Review of the Hydrogeological Controls on Coalbed Methane (CBM) and Development Trends

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Bo Wang ◽  
Dangliang Wang ◽  
Wenjie Cao ◽  
Guofu Li ◽  
Wei Hou ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Coalbed Methane ◽  
Produced Water ◽  
Isotope Analysis ◽  
Atmospheric Precipitation ◽  
Low Rank ◽  
Theoretical Research ◽  
Water Type ◽  
Development Trends ◽  
Fracture Development

Hydrogeological conditions can control the generation, preservation, enrichment, and production of coalbed methane (CBM) in the field; however, research on these impacts is insufficient, resulting in the limitation of the development of coalbed methane. This paper summarizes the current research status and development trends of the effect of hydrogeology on CBM using methods such as mathematical statistics, literature analysis, well logging, and hydrochemical analysis. The results indicate that it is beneficial for the generation of secondary biogenic gases in low-rank coal seams under the situations like active hydrodynamic conditions with a salinity less than 1000 mg/L, a pH range from 5.9 to 8.8, or a range of oxidation-reduction potential from -540 mV to -590 mV. The abnormally high temperature due to the magmatic-hydrothermal fluids accelerates the metamorphism of coal rocks, leading to the promotion of the generation of thermogenic gases. When the coalbed structural conditions of one area are similar to the depositional conditions in that area, the CBM is accumulated if the conditions of that area meet the following criteria: the water type is NaHCO3, the salinity is greater than 1500 mg/L, the desulfurization coefficient is less than 1, and the sodium-chloride coefficient is less than 10. The stable isotope analysis of CBM well-produced water shows that the δD values in the groundwater shift to the left of the global meteoric water line, indicating that the produced water comes from atmospheric precipitation. In the CBM enrichment zone, the area with a relatively high salinity and a low sodium-chloride coefficient is the high-production area. Based on our study, three high CBM-production patterns are summarized: coalbed structure-hydraulic trapping, fold limb-fracture development, and syncline core-water stagnation. Additionally, four development trends of the control of hydrogeology on CBM are proposed: transformation from qualitative evaluation to quantitative evaluation, from a singular evaluation standard to multiple evaluation standards, from static evaluation to dynamic evaluation, and from pure theoretical research to theoretical guidance on production practices.

First report of Branchinecta (Anostraca) in seasonal coastal pools in the Araucania region (Puaucho, 39°S, Chile)

Crustaceana ◽  
2018 ◽  
Vol 91 (10) ◽  
pp. 1219-1230
Author(s):  
Patricio De los Ríos ◽  
Eriko Carreño
Keyword(s):  
Principal Component Analysis ◽  
Low Temperature ◽  
Null Model ◽  
Principal Component ◽  
Niche Overlap ◽  
Total Dissolved Solids ◽  
Inland Waters ◽  
Dissolved Solids ◽  
Chilean Patagonia ◽  
Fairy Shrimps

Abstract To date, he fairy shrimps (Anostraca) of Chilean inland waters have been poorly described. Those that were described mainly belong to the genus Branchinecta, and the reports are primarily restricted to shallow seasonal pools at the northern and southern extremes of Chile. The aim of the present study was to give a first description of Branchinecta rocaensis, reported from ephemeral coastal pools in the Puaucho dunes, situated in the Araucania region. The results of null model analysis revealed first, that species associations are random and that there is niche overlap, while according to the principal component analysis, B. rocaensis was present at sites with low conductivity, low total dissolved solids and low temperature values, but with a high abundance of ostracods. The results obtained would agree with similar observations for Branchinecta habitats in southern Chilean Patagonia.

Influence of High Total Dissolved Solids Concentration and Ionic Composition on γ Spectroscopy Radium Measurements of Oil and Gas-Produced Water

2019 ◽  
Vol 53 (17) ◽  
pp. 10295-10302
Author(s):  
Moses A. Ajemigbitse ◽  
Travis L. Tasker ◽  
Fred S. Cannon ◽  
Nathaniel R. Warner
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Ionic Composition ◽  
Total Dissolved Solids ◽  
Dissolved Solids ◽  
Solids Concentration

scholarly journals Application of Moving Bed Biofilm Reactor and Fixed Bed Hybrid Biological Reactor for Oilfield Produced Water Treatment: Influence of Total Dissolved Solids Concentration

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7297
Author(s):  
Nicolas Lusinier ◽  
Isabelle Seyssiecq ◽  
Cecilia Sambusiti ◽  
Matthieu Jacob ◽  
Nicolas Lesage ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Produced Water ◽  
Bacterial Species ◽  
Fixed Bed ◽  
Total Dissolved Solids ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Dissolved Solids ◽  
Moving Bed ◽  
Oilfield Produced Water

This experimental paper deals with the development of a hybrid biological reactor for the treatment of a synthetic oilfield produced water under an increase in total dissolved solids (TDS) concentration. To comply with strengthening regulations concerning produced water discharge and peculiar produced water compositions, a moving bed biofilm reactor (MBBR) consisting in a combination of free activated sludge and moving biofilm supports was compared to a fixed bed hybrid biological reactor (FBHBR) consisting in a combination of free activated sludge and a fixed biofilm support. After a 216 days experimental period, the MBBR and the FBHBR were efficient to treat a synthetic produced water with chemical oxygen demand (COD) removal rate above 90% under an increase in TDS concentrations from 1.5 to 20 g·L−1. Ecotoxicity measurements on freshwater and marine microorganisms revealed an absence of toxicity on treated waters. A decrease in bacterial diversity indices with respect to the inoculum was observed in both bioreactors. This suggests that the increase in TDS concentrations caused the predominance of a low number of bacterial species.

PHYSICO-CHEMICAL ASPECTS OF YAMUNA RIVER AT GOKUL BARRAGE, MATHURA (UP) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
AJAY KUMAR RAJAWAT ◽  
PRAVEEN KUMAR
Keyword(s):  
Water Samples ◽  
Suspended Solids ◽  
Total Dissolved Solids ◽  
Tolerance Limit ◽  
Chemical Condition ◽  
Yamuna River ◽  
Dissolved Solids ◽  
Time Period ◽  
Physico Chemical ◽  
Almost All

An attempt has been made to study the Physico-chemical condition of water of Yamuna River at Gokul Barrage, Mathura, (UP). The time period of study was July 2015 to June 2016. Three water samples were selected from different sites in each month for study. The parameters studied were Temperature, Turbidity, pH, DO, BOD, COD, Total Dissolved Solids and Suspended Solids. Almost all the parameters were found above the tolerance limit.

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