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Results
ABSTRACT: A small-scale sensing technology can be used inside pipeline maintenance pigs of any size and configuration in order to measure fluid conditions, map pipeline features and identify potential wall buildup or defects. The tool can be used in pipelines where conventional in-line inspection tools cannot traverse, while significantly reducing deployment cost and risk. It can also be used to provide near real-time monitoring of critical pipeline characteristics. The pill-shaped housing containing the sensing elements can collect data on multiple variables, including but not limited to - pressure, temperature, 3-xis tilt and acceleration. Multiple tests were conducted using the technology mounted onto pigs in a 12-inch flow loop with single-phase gas and liquid media. Results from the sensing device consistently identified known bends and wall-thickness changes as small as 0.125 inches. The sensor pill device was also deployed in a free-floating arrangement without a carrier pig in the flow loop filled with water. This design enabled the sensing device to travel the length of the line without a pig, thus indicating a potential inspection solution for fully unpiggable pipelines. INTRODUCTION By its very nature, it is difficult to know exactly what is going on inside or outside a pipeline. The consequences of not knowing, however, can be catastrophic. The technologies available to measure the precise location of a pipe, the conditions inside it and the integrity of the pipe structure itself, have remarkably improved, including advances in instrumentation for inspecting, for example, the human body. Applied technologies for pipeline inspection For most pipeline inspection tasks, the pig remains the state of the art but the pigging of deepwater lines presents particular difficulties. Due to the economics of offshore exploration and production, many pipelines are being tied together, like branches on a tree, before being sent to the shore.
- North America > United States > Texas (0.20)
- North America > United States > Oklahoma > Tulsa County > Tulsa (0.15)
- Production and Well Operations > Well & Reservoir Surveillance and Monitoring > Production logging (1.00)
- Facilities Design, Construction and Operation > Pipelines, Flowlines and Risers (1.00)
- Facilities Design, Construction and Operation > Facilities Operations > Pipeline pigging (1.00)
- Data Science & Engineering Analytics > Information Management and Systems (1.00)
- Information Technology > Architecture > Real Time Systems (0.54)
- Information Technology > Communications > Networks (0.48)
ABSTRACT: In today’s pipeline market, operators have limited choices for controlling internal corrosion with conventional amine based inhibitors. Amine inhibitors are applied by one of two methods; continuously injected through atomization, or batched as a slug between pigs. Traditional inhibitors and application methods have two major short comings and limitations. The first short coming being a very limited performance lifespan, and the other is inadequate chemical coverage as well as treatment of the top of the line. The first short coming results in a very expensive approach due to extensive labor and injection equipment costs along with dosing issues that can occur with changing product flow rates. The second approach has inherent coverage problems where critical areas that are most susceptible to internal corrosion is, (i.e. elevation changes) may not be properly treated. A solution to the problem’s is the proper application of a recently developed two-part corrosion inhibitor. This binary corrosion inhibitor is applied by modified batch methods using spray pig technology that ensures full circumferential coverage of the internal pipe wall. Field performance and film persistency tests have proven that the active lifespan far exceeds that of existing conventional pipeline corrosion inhibitors. The binary corrosion inhibitor is typically applied as a two part system where Part A bonds molecularly with the metallic pipeline wall and then Part B reacts and bonds with the Part A allowing it to be applied to pipelines with limited cleaning and surface preparation requirements. Proper application of the binary corrosion inhibitor delivers superior internal corrosion protection for the pipeline operator/owner at a better economic cost performance benefit over traditional corrosion inhibitor treatment methods. This binary corrosion inhibitor has also been proven to significantly reduce wax deposition problems in crude oil lines which results in lower maintenance and improved flow characteristics.
- Energy > Oil & Gas > Upstream (1.00)
- Energy > Oil & Gas > Midstream (1.00)
- Materials > Chemicals > Commodity Chemicals > Petrochemicals (0.55)
- Well Completion > Well Integrity > Subsurface corrosion (tubing, casing, completion equipment, conductor) (1.00)
- Production and Well Operations > Production Chemistry, Metallurgy and Biology > Corrosion inhibition and management (including H2S and CO2) (1.00)
- Facilities Design, Construction and Operation > Pipelines, Flowlines and Risers > Materials and corrosion (1.00)