THE L-POD®SYSTEM

 

THE L-POD®SYSTEM

L-POD Drawing

DESCRIPTION

  The L-POD® System is a crude oil process designed to move, heat, and dehydrate (remove BS&W from) crude oil.
The system is a complex assembly of proven components, each industry standards by themselves. In combination, they perform to achieve the goal of economically reducing crude oil contaminants prior to crude movement downstream.
 

THE CRITICAL COMPONENTS

 Moving crude oil from one place to the next is an obvious necessity, until it finally reaches a refinery. Most crude moving is accomplished with centrifugal pumps. This type of pump is simple and reliable. However, it is also a primary culprit in creating and stabilizing the crude contaminant known as BS&W (basic sediment and water). In a centrifugal pump the tips of the impeller (a caged propeller) rotate at near the speed of sound. This very rapid rotation breaks large water droplets and sediment particles into smaller and smaller contaminants, until they are so small they no longer freely separate. This problem is solved in L-POD® through the selection of a “low shear pump”. The low shear pump is the first critical component of the L-POD®.

The second critical component is a heat exchanger, but not just any heat exchanger. This is a “plate and frame” heat exchanger developed exclusively for the L-POD®. This exchanger captures waste heat and transfers it to incoming crude from the low shear pump to reduce crude heating fuel consumption by over 80% … and sometimes up to 100%!

The third critical component is the pressurized crude oil heater-dehydrator. This component heats the crude oil and processes it through proprietary internals to maximize contaminant separation and crude oil quality.

In combination, these three critical components produce crude oil with a contaminant level well below the normal specification; often below 0.1%!
 

THE KEY COMPONENTS

 In addition to the critical components there are several key components. The most significant of these is the dual LACT unit components. Two LACT unit BS&W monitors measure 1) the quality of the inlet crude, and 2) the quality of the outlet crude.

The next most important key component is the computer control system. This system manages the L-POD® to optimize its performance without human intervention. The L-POD® computer software program optimizes the process of converting “wet” (high BS&W) crude into the desired low BS&W specification without the need of an operator. To do this the inlet BS&W monitor alerts the pumping and chemical demulsifier (emulsion breaker) to adjust according to the severity of the inlet condition. The outlet BS&W monitor provides input to the computer software so it can adjust the operation conditions to achieve the target, over-riding the inlet monitor as needed.
L-POD
The next key component is a three-way “divert” valve. It is identical to those used on LACT units automatically diverts any off spec crude oil back to the source or a “reject” tank for further processing, assuring that only “good” quality crude is sent to the owner’s LACT “run” tank. During start-up the divert valve is triggered to reject all oil until the outlet BS&W monitor alerts the start-up crew that the crude is “on spec” and the unit is ready for automatic operation.

The next key components are flow meters. Highly accurate LACT Unit-type Coriolis meters are used to meter all inlet and outlet crude volumes. A standard oilfield turbine flow meter is used to meter outlet water separated by the heated crude oil dehydration vessel.

Once L-POD® is switched to “automatic” operation, all components send continuous outputs to the computer system. All inputs from those components are logged and trended.

The last key component is the ICLOUD BASED transmission system. All data from the operating instruments and meters is stored, trended, and logged through the built in PC memory. This data is accessible to all authorized personnel via the Cloud regardless of their remote locations.
 
     

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