Thps iron sulfide
WebScanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis showed iron sulfide dominated the scale make-up at 74%. Figure 1: LPR plot showing FeS deposition trend of the blank test with no chemical, injection of the THPS based chemical at 100 ppm, and injection of SCALETREAT FeS 13805 at 50 ppm WebJan 1, 2024 · Tetrakis(hydroxymethyl)phosphonium sulfate (THPS) is an environmental friendly biocide commonly used in oil fields. It also has been used to control iron sulfide …
Thps iron sulfide
Did you know?
WebJun 16, 2024 · Sulfide was measured several minutes after each addition of THPS. The plot of THPS added vs sulfide is shown in Figure 3. Although there was some reduction in sulfide, not all of the sulfide appeared to be complexed, or removed from solution. THPS Experiment 2. THPS (1 mL) was dosed into 4-L of water. This equals 188 ppm. Webcontrol sulfide production ..... 65 Figure 5.1 The effect of 1-h biocide treatment on sulfide production in the absence of nitrate... 71 Figure 5.2 The effect of nitrate injection combined with 1-h pulse of biocide on sulfide
WebApr 12, 2024 · The role of THPS and chelating agents in iron-sulfide dissolution has not been thoroughly investigated. No study reports the optimum treatment parameters. The role of the pH of the dissolver also needs more attention. Oilfield-like conditions are rarely studied in the laboratory for scale removal research. WebThe Tolcide® PS A Series is Solvay's 3rd generation THPS range specially formulated with enhanced biocidal performance. These products offer excellent control of biofilm, MIC, …
WebSep 4, 2015 · THPS was unable to drastically inhibit SRB growth at lower concentrations ( 0.1-0.3%) ... removal of biomass (biofilm) and iron sulfide, etc. in producers wells. 2. WebApr 14, 2024 · The reaction of HCl and the iron sulfide scale generated 1,800 ppm of H 2 S in comparison with 0- and 10-ppm by THPS–ammonium chloride blend and K 2-DTPA, …
WebMar 29, 2024 · Conversely, combing THPS with EDTA (Ethylenediaminetetraacetic acid) proved effective in dissolving a mixture of different iron sulfide field scales. EDTA is a basic chelating agent which gave a ...
Webtraditional iron sulfide removal methods such as: 1. Acid treatments which generate high H2S levels (> 600 ppm) immediately after treatment. Though it eventually reduces to … map of bahia principe aquamarine punta canamap of brazil statesWebTHPC 80% can be also used as an iron control chemistry to prevent iron sulfide scale common in the oil and gas industry. Industrial and Commercial Water Treatment Tetrakis ... Hooper et al., 1976a, b). THPC, THPS and THPA/P can be cured on the fabric with amine compounds (e.g., ammonia, urea, melamine-formaldehyde resins) to form durable ... crossle puzzleWebJul 1, 2024 · The respective concentrations of THPS and DTPA were chosen as they are the optimum concentration for mixed iron sulfide scale solubility (Mahmoud et al., 2024). For … cross letteleWebAug 1, 2024 · THPS can diss olve iron sulfide by forming a purple to red complex in the presence of ammonia or . amines with a minimum or limited emission of H 2 S gas … cross leg sitWebTetrakis(hydroxymethyl)phosphonium sulfate (THPS), regarded as one of the most effective oilfield biocides in fighting SRB, is also found being able to dissolve iron sulfide scales which are known difficult to be solubilized. … map of camino primitivoWebApr 12, 2024 · Iron sulfide scales create well deliverability and integrity problems such as reduced production rates and damage to well tubulars. Problems associated with the use of HCl to remove these scales such as high corrosion rate, H2S generation, and scale reprecipitation, have required the use of alternative dissolvers such as tetrakis … crossliability provisions