What is slop drilling?
Drilling slop is liquid waste that is a mixture of mostly water with significant concentrations of oil and drilling mud. It is generated in most spaces and locations that handle drilling mud including the drill floor, mud pump room, reserve and active pit rooms, mud processing room, shaker room, and sack room.
What is slop mud?
marine. Drilling with both oil-based mud and synthetic based mud generates waste streams, often referred to as ‘slop mud’ or ‘slop water’, which are produced when an oil/synthetic/diesel-based drilling fluid becomes contaminated with water. Hydrocarbons render these slops ineligible for overboard discharge.
What is slop water?
Slop water is produced on offshore oil and gas rigs when cleaning the pipe and drill deck and is water that is contaminated with hydrocarbons, other chemicals and wastes.
What is meant by slop oil?
Slop oil (also called rag layer) is termed as a mixture of oil, water and fine solids [1], which can be frequently found throughout the processes of oil production in oil and gas industry, e.g., exploration, production, and refining processes. Various types of slop oils are produced from different oil fields.
What are oil slops?
What is slops tank?
Slop tanks are the focal point of the Load-On-Top system used on crude oil tankers to prevent pollution of the sea. Design of these tanks and their operating procedures strongly affect the degree of oil-water separation achieved.
What is slops in oil and gas?
“Slop Oil”, by definition, is considered crude oil which is emulsified with water and solids rendering it a waste stream that cannot be sold down the pipeline. Slop Oil, or secondary oil, is found in evaporation ponds, sludge pits, storage tanks, and permitted commercial disposal facilities.
What is the purpose of crude oil washing?
Crude oil washing (COW) is a system whereby oil tanks on a tanker are cleaned out between voyages not with water, but with crude oil – the cargo itself. The solvent action of the crude oil makes the cleaning process far more effective than when water is used.
How does the oil discharge monitoring equipment ODME works?
Oil discharge monitoring equipment (ODME) is based on a measurement of oil content in the ballast and slop water, to measure conformance with regulations. The apparatus is equipped with a GPS, data recording functionality, an oil content meter and a flow meter.
How many tanks should be crude oil washed?
For the purpose of sludge control, a tank need not be crude oil washed more than once in every 4 months. When the ship is expected to dry dock – all tanks must be crude oil washed followed by a water wash before gas freeing.