Oil-in-Water Testing: The Controversy and its Effects on Produced Water Monitoring in Trinidad

1996 ◽  
Author(s):  
Utam S. Maharaj ◽  
R. Roodalsingh
Keyword(s):  
Produced Water ◽  
Water Monitoring ◽  
Water Testing ◽  
Oil In Water

scholarly journals A novel silica-supported polyether polysiloxane quaternary ammonium demulsifier for highly efficient fine-sized oil droplet removal of oil-in-water emulsions

RSC Advances ◽  
2020 ◽  
Vol 10 (32) ◽  
pp. 18918-18926 ◽  
Author(s):  
Mengjin Zhai ◽  
Mian Wu ◽  
Cunying Wang ◽  
Xiaobing Li
Keyword(s):  
Quaternary Ammonium ◽  
Produced Water ◽  
Separation Efficiency ◽  
Polymer Flooding ◽  
Oil Droplet ◽  
Highly Efficient ◽  
Oil In Water

The existence of fine-sized oil drops that are difficult to coalesce greatly decreases the separation efficiency of produced water from alkali, surfactant, and polymer flooding technology (ASP) containing oil-in-water emulsions.

scholarly journals Uncertainty Analysis of Fluorescence-Based Oil-In-Water Monitors for Oil and Gas Produced Water

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4435 ◽  
Author(s):  
Dennis Severin Hansen ◽  
Stefan Jespersen ◽  
Mads Valentin Bram ◽  
Zhenyu Yang
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Separation Efficiency ◽  
Measurement Techniques ◽  
High Sensitivity ◽  
Calibration Method ◽  
Least Square ◽  
Oil In Water ◽  
Before And After ◽  
The Government

Offshore oil and gas facilities are currently measuring the oil-in-water (OiW) concentration in the produced water manually before discharging it into the ocean, which in most cases fulfills the government regulations. However, as stricter regulations and environmental concerns are increasing over time, the importance of measuring OiW in real-time intensifies. The significant amount of uncertainties associated with manual samplings, that is currently not taken into consideration, could potentially affect the acceptance of OiW monitors and lower the reputation of all online OiW measurement techniques. This work presents the performance of four fluorescence-based monitors on an in-house testing facility. Previous studies of a fluorescence-based monitor have raised concerns about the measurement of OiW concentration being flow-dependent. The proposed results show that the measurements from the fluorescence-based monitors are not or insignificantly flow-dependent. However, other parameters, such as gas bubbles and droplet sizes, do affect the measurement. Testing the monitors’ calibration method revealed that the weighted least square is preferred to achieve high reproducibility. Due to the high sensitivity to different compositions of atomic structures, other than aromatic hydrocarbons, the fluorescence-based monitor might not be feasible for measuring OiW concentrations in dynamic separation facilities with consistent changes. Nevertheless, they are still of interest for measuring the separation efficiency of a deoiling hydrocyclone to enhance its deoiling performance, as the separation efficiency is not dependent on OiW trueness but rather the OiW concentration before and after the hydrocyclone.

Development of Oil-in-Water Microemulsions and Evaluation of Its Presence in the Treatment of Produced Water

2019 ◽  
Vol 19 (12) ◽  
pp. 8143-8150 ◽  
Author(s):  
Juliana V Silva Camilo ◽  
Raquel R Martelloti ◽  
Josane A Costa ◽  
Claudia R. E Mansur
Keyword(s):  
Produced Water ◽  
Oil In Water

Water Quality and Well Injectivity: Do Residual Oil-in-Water Emulsions Matter?

SPE Journal ◽  
2010 ◽  
Vol 15 (02) ◽  
pp. 557-568 ◽  
Author(s):  
S.. Buret ◽  
L.. Nabzar ◽  
A.. Jada
Keyword(s):  
Porous Media ◽  
Droplet Size ◽  
Flow Rate ◽  
Produced Water ◽  
Droplet Diameter ◽  
Flow In Porous Media ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Flow ◽  
Limiting Value

Summary The present work is a part of a thorough and systematic laboratory study of oil-in-water emulsion flow in porous media that we have undertaken recently to investigate the mechanisms of oil-droplet retention and its consecutive effect on permeability. One of our main objectives was to see how the in-depth propagation of produced- water (PW) residual dilute emulsion could impair the permeability during PW reinjection (PWRI). During this casework, we used granular packs of sharp-edged silicon carbide grains and stable and dilute dodecane-in-water emulsions. The flow experiments were performed under well-controlled conditions, and we studied the effect of most of the relevant parameters, including flow rate, salinity, droplet size, and permeability of the porous medium. A careful monitoring of the salinity and the jamming ratio (JR) allowed us to consider and work separately on the two main mechanisms of droplet capture (i.e., surface capture and straining capture). In a previous paper (Buret et al. 2008), we reported on the effect of salinity and flow rate on emulsion flow through porous media where the pore-size/droplet-size ratio (JR) was very high, ensuring that only droplet capture on pore surface is operative. This paper reports on the effect of salinity and JR on both mechanisms, with the main focus being on the induced permeability impairment. We demonstrated that surface capture could induce significant in-depth permeability losses even at a high JR. The maximum reached permeability loss is very sensitive to salinity and flow rate (shear-thinning effect). This maximum is always lower than a limiting value dictated by the surface-coverage jamming limit of random sequential adsorption (RSA) theory. This limiting value increases while decreasing the JR, according to a simple formula extracted from Poiseuille's law with a mean hydrodynamic thickness of the deposited layer close to the droplet diameter (monolayer deposition). Regarding the straining capture, we determined a critical JR of 7 for this mechanism to occur. Preliminary results using only two JR values and one flow rate are presented. Compared to surface capture, the results show that straining capture induces more severe plugging with a lower rate of propagation. The lower the JR is, the more severe the plugging is and the lower the propagation rate is. However, more investigations are still required, notably using various JRs and flow rates to characterize this important mechanism better.

scholarly journals Separation of oil-in-water emulsion using slotted pore membrane

2018 ◽  
Vol 11 (1) ◽  
pp. 57
Author(s):  
P.D. Sutrisna ◽  
F.S. Lingganingrum ◽  
I.G. Wenten
Keyword(s):  
Pore Size ◽  
Oil Recovery ◽  
High Stability ◽  
Produced Water ◽  
Petroleum Industry ◽  
Water Emulsion ◽  
Oil In Water ◽  
High Concentrations ◽  
Oil In Water Emulsion ◽  
Oil Filtration

Nowadays, oil-in-water (O/W) emulsion has become an important topic in many industries. Petroleum industry is one of these industries. O/W emulsion produced in crude oil recovery causes problems at different stages in petroleum industry. Produced water can not be injected again into the well, because it contains high concentrations of oil, grease and suspended particles. Recently, membrane technology has been applied in separation of O/W emulsion. One membrane that has been developed special for oil filtration is slotted true surface filter. This research investigated influences of pore size and initial concentration of feed emulsion during oil filtration using slotted pore membrane. From the experiment, oil rejection will be higher if we use membrane with smaller pore size, emulsion with high stability and small trans membrane pressure. Based on the slot width it can be concluded that 33 microns membrane gives better oil rejection than 80 microns membrane. Initial concentrations of challenge emulsion also influence value of flux and oil rejection, which will also influence our decision to choose suitable membrane in relation with hydrophilicity of the membrane. During microfiltration process, there was deformation of oil particle through slot of membrane, which can be analyzed by observing size of oil drops in feed and permeate sides. Keywords: emulsion, microfiltration, slotted pore membraneAbstrakSaat ini penanganan limbah emulsi minyak dalam air menjadi topik penting di berbagai industri. Salah satunya adalah industri perminyakan. Emulsi yang dihasilkan dalam proses penambangan minyak mentah menimbulkan masalah pada beberapa tahapan proses di industri. Air yang mengandung minyak tidak dapat digunakan kembali untuk meningkatkan perolehan minyak karena mengandung minyak, lemak dan partikel tersuspensi dalam konsentrasi tinggi. Sehingga dibutuhkan proses pemisahan emulsi minyak dalam air. Akhir–akhir ini teknologi membran telah digunakan untuk memisahkan emulsi tersebut. Salah satu membrane yang dikembangkan adalah membrane berslot seperti yang digunakan dalam penelitian ini. Penelitian ini telah berupaya mengamati pengaruh variasi ukuran pori dan konsentrasi umpan terhadap performa membrane berslot dalam memisahkan emulsi minyak dalam air. Dari percobaan, diperoleh hasil bahwa rejeksi membran terhadap minyak meningkat jika digunakan membrane dengan ukuran ori lebih kecil, emulsi dengan kestabilan yang tinggi, dan beda tekanan yang kecil. Disimpulkan bahwa membrane dengan ukuran pori 33 mikrometer memberikan rejeksi membrane lebih tinggi dibandingkan membrane dengan ukuran pori 80 mikrometer. Konsentrasi awal umpan mempengaruhi fluks dan rejeksi serta mempengaruhi pilihan kita dalam memilih jenis membran yang digunakan. Selama proses filtrasi, terjadi perubahan bentuk atau deformasi partikel minyak melewati slot atau pori membrane yang diamati melalui distribusi ukuran partikel.Kata kunci: emulsi, mikrofiltrasi, membran berslot

Oil-in-Water Monitoring Using Membrane Inlet Mass Spectrometry

2011 ◽  
Vol 83 (16) ◽  
pp. 6230-6236 ◽  
Author(s):  
Boris Brkić ◽  
Neil France ◽  
Stephen Taylor
Keyword(s):  
Mass Spectrometry ◽  
Water Monitoring ◽  
Membrane Inlet Mass Spectrometry ◽  
Oil In Water
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