US 2025/0051653 A1Published application

System and method for simultaneous transport of crude-oil and naphtha in cross-country crude oil-pipeline

OwnerPawan Kumar Agarwal, N Karthikeyan +6inventors

InventorsPawan Kumar Agarwal, N Karthikeyan, Avinash Kumar Singh, Nayan Agarwal, Akhilesh Kabra, Deepak P, Anupam Jain, Sandip Pal

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Abstract

The present disclosure generally relates to a system and method for the simultaneous transport of Crude Oil and Naphtha in a cross-country crude oil pipeline. The system includes the batch/zone of crude blend followed by lighter crude to clean and dissolve the asphaltene content of the crude blend. The naphtha batch/zone is sent securely in between the batch/zone of water. To carry out the cleaning of inner surface of the pipe various types of pigs have been used, the pigs have been designed to scrap the inner surface of the pipe and collect the foreign particle as well. The light crude oil is used to dissolve the asphaltene and resin components of crude blend, pigs are used to clean the surface and as well as a separating barrier in between the two layers.

Claims12

Dependent claims

A system for simultaneous transport of crude oil and naphtha in cross-country crude oil pipeline, the system comprises:

a brush-type Bi-Di (Bi-directional) pig (102) incorporated inside a cross-country crude oil pipeline followed by a blended crude oil batch configured for mechanically scraping the inner walls/circumference of the pipeline;
wherein a batch of light crude oil medium with API gravity API>36-40, particularly API>39, is transported to dissolve adhered asphaltene contaminant molecules;
a magnetic Bi-Di pig (104) incorporated inside the cross-country crude oil pipeline to scrap adhered asphaltene contaminant molecules upon maintaining close contact with a pipeline inner shell;
a batch of naphtha between batches of two water zones to prevent contamination;
a roller cup-type Bi-Di pig (106) at the front end of the batch of naphtha and water zone implemented to separate the naphtha and water;
a CDU column (108) configured to process a contaminated medium in a refinery to separate pure streams;
a plurality of crude oil tanks (110), slop tanks (112), and naphtha tanks (114) deployed at a receiving end for receiving and collecting blended crude oil, light crude oil, water, and naphtha, separated based on continuous monitoring of physical parameters and density meter readings;
a refinery desalter unit (116) to remove water medium and downstream CDU operations for stream separation upon receiving crude oil along with interface mediums of light crude oils;
and
a steam cracker operation unit (118) configured for downstream production of olefins and polyolefins upon receiving transferred clean naphtha batch.

7 more elements

Dependencies are inferred from the claim text.