Co-Precipitation of Radium with Barium and Strontium Sulfate and Its Impact on the Fate of Radium during Treatment of Produced Water from Unconventional Gas Extraction

2015 ◽  
pp. 159-180 ◽  
Author(s):  
Tieyuan Zhang ◽  
Kelvin Gregory ◽  
Richard Hammack ◽  
Radisav Vidic
2017 ◽  
Vol 524 ◽  
pp. 493-501 ◽  
Author(s):  
Omkar R. Lokare ◽  
Sakineh Tavakkoli ◽  
Shardul Wadekar ◽  
Vikas Khanna ◽  
Radisav D. Vidic

2020 ◽  
Vol 717 ◽  
pp. 137085 ◽  
Author(s):  
Bridget R. Scanlon ◽  
Robert C. Reedy ◽  
Pei Xu ◽  
Mark Engle ◽  
J.P. Nicot ◽  
...  

Desalination ◽  
2015 ◽  
Vol 366 ◽  
pp. 94-112 ◽  
Author(s):  
Gregory P. Thiel ◽  
Emily W. Tow ◽  
Leonardo D. Banchik ◽  
Hyung Won Chung ◽  
John H. Lienhard

2019 ◽  
Vol 814 ◽  
pp. 505-510
Author(s):  
Peng Chang ◽  
Rui Xue Shi ◽  
Li Wang ◽  
Wei Han ◽  
Cong Dan Ye ◽  
...  

A large amount of foreign matter appears in the Sulige gas well, causing blockage and corrosion of the pipeline, increasing the pressure difference in the wellbore and seriously affecting the normal production of the gas well. The gas wells with serious conditions mentioned above were selected to analyze the quality of single well produced water and the composition of blockage and core. Combined with the XRD analysis results of the cuttings, the long-term leaching experiments on the cuttings in different simulated solutions were carried out to study the sources of scaled ions in the gas wells. The experimental results showed that the extracted water from SD6-1 had high salinity and high content of scale ions Ca2+, Ba2+ and Sr2+;the main component of blockage is the acid insoluble strontium sulfate (barium) scale, and contains a small amount of corrosion products. The easily scalable Ca2+、Mg2+、Ba2+ and Sr2+ produced from the dissolution of the core in the formation water or working fluids, especially the acid erosion dissolves. According to the scaling mechanism, two kinds of Sr/Ba scale inhibitor were selected. The results showed that the barium II scale inhibitor performance is relatively good, and at the concentration of 40 mg/L, and the scale inhibition rate was more than 95%. The clogging of a single well can be reduced by adding a scale inhibitor.


2019 ◽  
Vol 394 ◽  
pp. 97-102
Author(s):  
Hang Juan Huang ◽  
Xi Cui ◽  
Yuan Zhang ◽  
Jian Xu ◽  
Yun Ma

A large number of blockage appeared in gas wells and pipeline appeared, which causedplugging, corrosion and the increasing of wellbore pressure difference, and seriously affect thenormal production of gas well of problems. In this paper, the water quality of produced water fromthe severe cases of single wells or pipeline water were analyzed, also include the composition ofblockage and core with the chemical volumetric method (CVM) , X-Ray Diffraction (XRD) and x-rayfluorescence (XFS) method. Meanwhile, the core powder was leached in simulated acid worksolution, and then the leaching solution was analyzed with CVM. The experimental results show thatThe produced water has high salinity, high contents of Ca2+, Ba2+ and Sr2+, low pH value, which leadto corrosion and scaling. The main components of the blockage are acid insoluble strontium sulfate(barium) scale or corrosion product or mixture of corrosion and CaCO3 scaling product. Ca2+, Ba2+and Sr2+ were easy to scale in wellbore or pipeline when they encountered other produced water fromdifferent formation. The Ca2+, Mg2+, Ba2+, Sr2+ and Fe 2+/3+ mainly derived from the dissolution offormation debris in formation water and working fluid (especially acidic working fluid) to reservoirrock, so the salinity of the produced water increased, and the trend of scaling and corrosion alsoincreased with the gas field development.


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