COSASCO®

COSASCO®

COSASCO®

Product catalog summary
Features
  • Early detection of erosion
  • Removable under system pressure
  • Complies with NACE MR0175
  • Robust design for high velocity flows
  • Compatible with standard 2” access fittings
Introduction

The COSASCO Sand Probe Erosion Detection System is designed to detect erosion in oil and gas wells caused by sand production. Erosion can severely damage equipment such as chokes, valves, and flow-lines, especially in areas downstream of chokes and bends. Early detection is crucial to prevent damage and safety risks.

System Design

The system uses a sacrificial tube inserted into the flow to detect erosion. The new design improves upon older models by eliminating the need for a side T fitting and injection nut/seal assembly, offering a more robust and reliable mechanical connection. The probe is made from corrosion-resistant SS316 material and can be retrieved online using a COSASCO retrieval tool.

Operation

The sand probe erodes over time due to sand or solids in the flow, exposing the system to line pressure. This pressure is then registered on a pressure gauge or transmitted via a pressure switch to a control room. The probe is designed to be placed at the center of the pipeline for maximum sand impingement.

Components
  • Hollow Plug Assembly with Needle Valve
  • Pressure Gauge or Remote Sensor Alarm/Shut-off Assembly
  • Protective Cover
  • Access Fitting Assemblies
Application and Installation

The probe should be placed approximately 60% into the pipeline diameter for optimal performance. It is recommended to install the probe downstream of flow direction changes, such as chokes or bends, where erosion is most severe.

Ordering Information

Various configurations are available, including different materials for the hollow plug assembly and seal materials. Customers can consult the factory for specific requirements and configurations.

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Catalog excerpts

COSASCO®-1

Sand Probe Erosion Detection System Features  Early Detection of Erosion  Removable Under System Pressure  Meets NACE MR0175  New and Improved Robust Design for High Velocity Flows  Compatible with Standard 2” Access Fittings Sand production in oil and gas producing wells can cause rapid erosion and wear of top side equipment such as chokes, valves, and flow‐lines. The areas that can experience the most severe effects of erosion are immediately downstream of a choke, outer diameters of bends, reducers, misaligned flange joints and pipe T joints. Early detection of erosion is key to prevent serious damage and to prevent safety risks from potential leaks or malfunction of process equipment. The Sand Probe is a sacrificial tube inserted into the flow and can be used as an early warning (safety) device for alerting the operator that a critical metal loss (erosion) has occurred due to the effects of sand or solids erosion in the flow. Cosasco Sand Probes were developed as a simple and robust means of detecting significant erosion in high velocity flow lines. This new design replaces the older NPT sacrificial tube and side T access fitting system. The advantages are that the side T fitting and injection nut/seal assembly is no longer required and the new probe design offers a more robust probe with a more reliable mechanical connection. The modified hollow plug assembly allows online retrieval to be achieved. The sensing portion of the Sand Probe is basically a reinforced sacrificial tube made from corrosion resistant material (SS316). The probe is connected to a hollow plug assembly which contains a needle valve that isolates the pressure in the event of the tube being eroded. This allows the external gauge assembly to be removed for live retrieval of probe using a Cosasco retrieval tool. The Sand Probe can be to be used in any standard Cosasco 2” Access Fitting Assembly. In use, providing there is sufficient flow velocity, the effect of sand or solids will eventually erode through the Sand Probe sacrificial tube portion, exposing the sealed sys

 Open the catalog to page 1
COSASCO®-2

System Overview The following diagrams show all the components required to make up a sand monitoring system. Bleed Valve Hollow Plug Assembly w/Needle Valve Model 50 Access Fitting Reducing Nipple Sand Probe Assembly Pressure Gauge * Protective Cover Sand Erosion Detection System w/Pressure Gauge Assembly Shut-off Valve Model 50 Access Fitting Plug w/Needle Valve Sand Probe Assembly Nipple Handle Pipe Plug Protective Cover Sand Erosion Detection System w/Remote Alarm/Shut‐off Pressure Assembly (Electrical Sensor option available, consult factory) Application To obtain a ...

 Open the catalog to page 2
COSASCO®-3

Ordering Information Sand Erosion Detection System w/Pressure Gauge Assembly (Required Parts) Access Fitting Assemblies Sand Erosion Detection System w/Remote Alarm/Shut‐off Pressure Assembly (Required Parts) Access Fitting Assemblies Hollow Plug Ordering Model 551036 Hollow Plug Assembly w/Needle Valve Hollow Plug Assembly Code Sand Probes Ordering Chart Model 641006 Sand Probe Sacrificial Sand Probe Element Alloy: SS316 Standard, consult factory for other available Elements. Enter UNS Number Code Length XX.XX Order Length 1.00" to 24.00" (.25" increments)...

 Open the catalog to page 3
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.