To effectively create and optimize oil refineries along with petroleum-based production for products such as explosives and advanced circuits in Factorio, follow the detailed steps outlined below:

Step 1: Setting Up Oil Extraction

1. Locate Oil Wells
– Identify Oil Wells: Look for the green highlight over oil wells when you hover a pumpjack over them on the map. This indicates the resource locations.

2. Install Pumpjacks
– Placement of Pumpjacks: Position pumpjacks directly over the highlighted oil wells to extract crude oil consistently.

3. Connect Pipes
– Transporting Crude Oil: Use underground and regular pipes to transport crude oil from pumpjacks to your refinery or storage area. Keep the layout organized to prevent mixing with other fluids.

Step 2: Building an Oil Refinery

1. Construct an Oil Refinery
– Refinery Location: Build the oil refinery in a centralized area that allows easy access for transporting both inputs (crude oil) and outputs (refined products).

2. Set Recipes
– Selecting Recipes: Start with basic oil processing in the refinery, which produces petroleum gas, heavy oil, and light oil. If you’ve researched it, switch to advanced oil processing for better product yields and additional product options.

Step 3: Optimizing Refinery Operations

1. Manage Outputs
– Preventing Bottlenecks: Install transport belts or pipes to carry away the outputs. Monitor storage capacities; if one output becomes full, production halts for all types.

2. Use Storage Tanks
– Temporary Storage Solutions: Use storage tanks to hold excess petroleum products. This prevents production stoppages and allows for better management of supply flows.

3. Crack Heavy and Light Oil
– Chemical Plants Usage: Set up chemical plants to crack heavy oil into light oil and convert light oil into petroleum gas as needed, thus increasing the efficiency of your oil products.

Step 4: Producing Explosives and Advanced Circuits

1. Explosives Production:
– Sulfur Production: Convert petroleum gas into sulfur using a chemical plant.
– Sulfuric Acid Making: Process sulfur into sulfuric acid in another chemical plant.
– Combine Ingredients: Use sulfuric acid with other ingredients such as iron and water to create explosives.

2. Advanced Circuits Production:
– Plastic Production: Utilize heavy oil in a chemical plant to manufacture plastic.
– Copper Wire: Ensure a steady supply of copper wire from copper ore processing.
– Circuit Assembly: Combine plastic, copper wire, and other necessary materials like iron gears to produce advanced circuits.

Step 5: Advanced Oil Processing Setup

1. Research Advanced Oil Processing
– Complete Research: Unlock the advanced oil processing technology through research, which improves your efficiency.

2. Reconfigure Refinery
– Setup Adjustment: Modify your refinery to enable multiple inputs for various advanced processing recipes.

3. Optimize Pipe Layout
– Fluid Management: Ensure your pipes are well-designed to prevent fluid mixing and to manage the flow of multiple oil products smoothly.

General Tips for Optimization

– Modular Design: Develop your oil setup in a modular way so you can easily expand it as your production needs grow.
– Efficient Transport: Use transport belts, inserters, and train systems to move products efficiently between processing buildings and storage.
– Balance Production: Maintain a balance in the production of crude oil derivatives to avoid bottlenecks in the refining and manufacturing process.

By following these structured steps and tips, you can successfully create and optimize oil refineries and manage petroleum-based production in Factorio, leading to efficient crafting of explosives and advanced circuits. For visual guidance, consider watching relevant tutorials or gameplay strategies on platforms like YouTube to complement your learning.