Cairn Oil Geologist Interview Questions and Answers

Petroleum geology involves the study of various aspects related to the formation, exploration, and production of oil and gas.

• Exploration techniques such as seismic surveys and well logging

• Reservoir characterization and modeling

• Drilling and completion techniques

• Production optimization and enhanced oil recovery methods

• Environmental impact assessment and mitigation measures

• Economic analysis and risk assessment

• Regulatory c

A lease can be terminated through mutual agreement, expiration, breach, or eviction.

• Mutual agreement: Both parties agree to end the lease before the agreed-upon term.

• Expiration: The lease ends naturally after the agreed-upon term.

• Breach: One party violates the terms of the lease, allowing the other party to terminate it.

• Eviction: The landlord legally removes the tenant from the property due to non-payment or other viol

Foxboro iA series DCS is a distributed control system used in industrial automation.

• It is designed for process automation and control in industries such as oil and gas, power, and chemical.

• It offers advanced control strategies and algorithms for optimizing process performance.

• It includes a range of hardware and software components, including controllers, I/O modules, and engineering tools.

• It supports various communicat...read more

Triconex PLC is a safety instrumented system used in critical applications.

• Triconex PLC is designed for high availability and fault tolerance.

• It uses triple modular redundancy (TMR) architecture to ensure safety and reliability.

• It has a wide range of input/output modules and communication options.

• It is used in industries such as oil and gas, chemical, and power generation.

• It has features such as diagnostics, testing, a...read more

Spanning Tree Protocol (STP) is a network protocol that prevents loops in a network topology.

• STP is used to prevent broadcast storms caused by loops in a network.

• It works by selecting a root bridge and disabling redundant paths to prevent loops.

• STP is implemented in switches and bridges in a network.

• It is defined in IEEE 802.1D standard.

• STP has several variants such as Rapid STP (RSTP) and Multiple STP (MSTP).

DCS systems in different plants are interconnected through various communication protocols.

• DCS systems use communication protocols like Modbus, Profibus, and Ethernet/IP to interconnect.

• Interconnection allows for data sharing and control between different plant areas.

• DCS systems can also be connected to other systems like SCADA and MES for higher-level control and monitoring.

• Interconnection can be achieved through wire...read more

Siemens, GE Fanuc, and Allen Bradley PLCs are programmable logic controllers used in industrial automation.

• Siemens PLCs are known for their high processing speed and advanced communication capabilities.

• GE Fanuc PLCs are known for their flexibility and ability to handle complex applications.

• Allen Bradley PLCs are known for their user-friendly programming software and extensive support network.

• All three PLCs offer a rang...read more

Steps to be taken for work in a safety critical loop

• Identify the safety critical loop

• Define the safety requirements

• Design the loop with redundancy and fault tolerance

• Implement the loop with safety standards

• Test the loop thoroughly

• Maintain the loop regularly

DSR stands for Daily Sales Report. It is a document that summarizes the sales activities and performance of a business on a daily basis.

• DSR provides insights into daily sales trends and helps in tracking sales targets.

• It includes information such as total sales, number of transactions, average transaction value, and sales by product or category.

• DSR is used by managers to evaluate sales performance, identify areas for i...read more

I used a combination of inventory management software, physical counts, and sales reports to check stock and volume.

• Utilized inventory management software to track stock levels and monitor volume

• Conducted regular physical counts to ensure accuracy of stock levels

• Analyzed sales reports to identify trends and forecast future stock and volume needs

Calculations in petrol pump involve measuring fuel quantity, calculating cost, and maintaining inventory.

• Fuel quantity is measured using a flow meter or dipstick.

• Cost is calculated based on the price per liter or gallon.

• Inventory is maintained by tracking fuel deliveries and sales.

• Calculations may also involve taxes, discounts, and loyalty programs.

• Accuracy is crucial to prevent losses and ensure customer satisfaction.