... modes for UNS R55400 pipe exposed to relevant oilfield production environments which include sour well fluid brines, a heavy chloride/bromide brine well completion fluid, injected methanol, organic acid-and HCl-based well acidizing solutions, and seawater. The alloy’s elevated reducing acid chloride...

... * Xinming Hu is currently with Wood Group Integrity Management, Compass Point, 79 -87 Kingston Road, Staines, Middlesex, TW18 1DT United Kingdom. Abstract Lean duplex stainless steels are becoming increasingly popular in oilfield environments as a result of their cost, good mechanical properties...

... inhibitors oilfield carbon dioxide emulsion tendency emulsion stability water cuts droplet size handshake homogenizer seltzer bottle Waring ¹ blender INTRODUCTION Production of immiscible oil and water through wellhead chokes and valves, along with the simultaneous action of shear...

...Oilfield under-deposit corrosion iron sulfide deposits sour conditions INTRODUCTION The presence of surface deposits in oil and gas production systems can lead to premature failure of fluid-handling equipment. The damages may be due to erosion corrosion and/or under-deposit corrosion (UDC...

.... Calcium ion enhances the activity of the inorganic inhibitor and decreases the efficiency of the organic inhibitor. Magnesium has negligible influence on the efficacy of either inhibitor. Zinc, although not commonly found in oilfield brines, has a significant inhibitory influence on its own...

... include those developed for use in oilfield acidizing fluids or chemical cleaning formulations, downhole treating applications, pure water, and scale inhibitors in brines. Examples of the development of several green formulations also will be described. Inhibitor acid green oilfield INTRODUCTION Green...

... weight loss rate was 140 mpy. electrochemical noise potentiostatic control localized corrosion on-line corrosion monitoring inhibitor oilfield RESULTS AND DISCUSSION General Corrosion Figure 1 shows the typical time records of the potential and current noise obtained for various potential hold...

... is also quite varied. For example, the inhibitors may be applied by continuous injection or in a single treatment as a batch inhibitor. rotating cylinder electrode film life inhibitors oilfield CO₂ corrosion INTRODUCTION In our quest to develop cost-effective inhibitor formulations...

...Abstract Recently, it has become apparent that THPS, often used as a biocide in oilfield operations, also dissolves iron sulfide scales. The chemistry of this process is reviewed and a study of iron sulfide dissolution, over a range of conditions, is reported. In particular, combinations of THPS...

... and for basic studies in fluid mechanics ^{5 - 10} . The main oilfield applications of chemicals capable of affecting drag reduction are in crude oil transportation and water reinjection lines. Drag reducing agents (DRA’s) used in crude oils are usually characterized as high molecular weight oil soluble...

... localized corrosion on-line monitoring DC coupling inhibitor oilfield INTRODUCTION A new potentiostatic electrochemical noise (P-ECN) technique was recently introduced and its performance demonstrated in the lab ^{1 , 2} . The technique is based on the current and potential noise measurements...

... ZRA and P-ECN noise measurements is presented using a mild steel/brine corrosion system. electrochemical noise potentiostatic control localized corrosion on-line monitoring flow inhibitor oilfield INTRODUCTION Electrochemical noise (ECN) may be defined as the spontaneous fluctuations of current...

... by sulfur-containing inhibitors including disulfide formation was proposed. thiosulfate thioglycolic acid residuals rotating cylinder electrode LPR flow loop oilfield CO₂ INTRODUCTION Organic, water soluble, sulfur-containing corrosion inhibitors (e.g. thioglycolic acid) have been...

... salt/complex formation and oil/water partitioning. A synergy between phosphate esters and imidazolines is also investigated. phosphate esters residuals ICP rotating cylinder electrode LPR ethoxilation hydrolysis oilfield CO₂ imidazoline INTRODUCTION Phosphate esters are major...

... of the inhibitor film is described in terms of bilayer/multilayer film model. Rotating Cylinder Electrode imidazoline amide amine corrosion inhibitor oilfield CO₂ bilayer INTRODUCTION Nitrogen-based, organic surfactants such as imidazolines, amides, amido amines and amines and their salts, have...

.... This makes the use of elastomers in mud motors quite unique. Properties Of Elastomers For Mud Motors mud motor oilfield elastomer chemical resistance mechanical properties NBR HNBR FKM TFEP EPDM drilling fluids oil based mud synthetic based mud water based mud elastomer-to-metal bonding...

... The performance of phenolics at elevated temperatures make them attractive for various down-hole applications in the oilfield. Table 8 shows the flexural modulus of phenolic composites vs. temperature. With many oilfield bottom hole temperatures in the 250°F range and higher, few non-metallic alternatives...

...Field Investigation Abstract The souring of normally sweet production systems is a significant problem which can have implications to continued oilfield operations. Such problems are commonly approached by gathering of field sample and laboratory analysis or by simple test kits. This paper...

... in the surface film on which inhibitors are less favorably adsorbed. flow loop downhole tubulars oilfield inhibitors corrosion coiled tubing 13Cr 0.5Cr martensitic CO₂ INTRODUCTION This is more than that contained in AISI 316 stainless steel (18%) and even in duplex (22-25%). ²⁸...

... of failures in oilfields, localized corrosion. Therefore, the operators are constantly searching for a localized corrosion monitoring technique in an attempt to fine tune their corrosion control program and to reduce the risk of failures. Presently at least three techniques have been used to monitor localized...