...Abstract Pipe fittings such as elbows and tees are often used in oil and gas production systems and are vulnerable to erosion damage when sand production is anticipated. Annular flow and low liquid loading flows are mostly observed in multiphase gas production pipelines. Sand erosion of elbows...

... (annular condition) to 0.97 m/s (pseudo-slug flow region). The transition lines in the figure are based on flow pattern models by Taitel and Dukler ⁶ , Barnea ⁷ and Zhang et al. ⁸ . The annular flow regime occurs under conditions of high gas flow rates and very low...

... in gas, low-liquid loading and annular flow conditions that occur frequently in gas production conditions. Erosion data has been collected using a non-intrusive ultrasonic technique with a modified data acquisition algorithm. Erosion experiments were conducted in a large scale multiphase flow loop...

... and three-inch elbows in a large scale multiphase flow loop with gas, liquid and sand for gas and liquid velocities producing slug and annular flows. The annular flow experiments were primarily performed in the upward vertical orientation but a few experiments were performed in the horizontal orientation...

... also impact the severity of erosion in multiphase flow. The differences result from changes in flow characteristics such as distribution of film thickness around the pipe for annular flow. Changes in the flow characteristics can also affect the distribution of the solid particles. The current work...

... in the operating system. INTRODUCTION Flow Loops Rotating Cylinder Rotating Cage Jet Impingement Annular Flow Abstract Generally, there are two reasons for conducting flow accelerated corrosion tests. The first is to make a comparison of material performance or corrosion control methods, such as corrosion...

... good agreement. erosion multiphase flow three-phase flow sand erosion annular flow slug flow vertical flow elbow INTRODUCTION Erosion caused by entrained solid particles is a major problem in fluid handling equipment used in several industries. In the oil and gas industry, sand production from...

... and the bottom of the pipe under stratified and annular flow conditions. Various corrosion monitoring techniques, including ER, LPR, and WL, and surface analysis techniques, including SEM/EDS, MM, and XRD are used during the experiments and for post-test analysis. The parametric study involves the systematic...

...Abstract Wet gas corrosion rates of C1018 steel at the top and bottom of a high pressure 10 cm diameter horizontal pipeline have been measured under annular flow conditions at 0.45 MPa CO₂ and 90°C. The corrosive medium consists of de-ionized water and a low viscosity hydrocarbon phase...

...Abstract A prototype has been developed to measure both corrosion rates and liquid film thickness in pipes carrying fluids with annular flow. Circuital modeling discretization was used in determining the theoretical sensor response. These results were verified experimentally with the prototype...