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Schlumberger Interview Questions and Answers
57 Interview questions
Maximum LCM concentration varies; typically, 5-10% is common, mixed with water and pumped using specialized equipment.
Common LCMs include calcium carbonate, barite, and lost circulation materials like cellulose.
For a 10% concentration, mix 10 lbs of LCM per 100 gallons of fluid.
Use a high-shear mixer to ensure uniform dispersion of LCM in the drilling fluid.
Pumping is done using a positive displacement pump to mai...
Schlumberger collaborates with ONGC on various oil and gas exploration and production projects, enhancing operational efficiency.
Conducting seismic surveys to identify potential oil and gas reserves.
Providing drilling services and technologies to optimize extraction processes.
Implementing reservoir management solutions to maximize production.
Utilizing data analytics for real-time monitoring and decision-making.
Off...
RBAC in Power BI controls user access to data and reports based on roles, enhancing security and data governance.
RBAC stands for Role-Based Access Control, allowing permissions based on user roles.
In Power BI, you can define roles and rules to restrict data access for different users.
For example, a 'Sales' role may only see data related to their region.
Roles can be created in Power BI Desktop and published to the ...
Power BI offers various access methods for data retrieval and visualization, enhancing reporting capabilities.
Direct Query: Connects directly to the data source for real-time data access.
Import Mode: Loads data into Power BI for offline analysis and faster performance.
Live Connection: Maintains a live connection to data sources like SQL Server Analysis Services.
REST API: Allows programmatic access to Power BI reso...
JavaScript (JS) is a versatile, high-level programming language primarily used for web development to create interactive content.
Client-side scripting: JS runs in the browser, enabling dynamic content updates without reloading the page. Example: Form validation.
Event-driven programming: JS responds to user actions like clicks and key presses. Example: Dropdown menus that expand on click.
Asynchronous programming: J...
Java exceptions are events that disrupt normal program flow, categorized into checked and unchecked exceptions.
Checked Exceptions: Must be declared or handled. Example: IOException.
Unchecked Exceptions: Runtime exceptions, not required to be declared. Example: NullPointerException.
Error: Serious issues that applications should not try to catch. Example: OutOfMemoryError.
Try-Catch Block: Used to handle exceptions. ...
Identify and count duplicate words in a string using programming techniques.
Split the string into words using a space delimiter. Example: 'hello world hello' becomes ['hello', 'world', 'hello'].
Use a dictionary to store word counts. Increment the count for each word as you iterate through the list.
Filter the dictionary to find words with a count greater than 1, indicating duplicates.
Return or print the duplicates ...
A gridiron is a metal framework used for grilling food over an open flame, enhancing flavor through direct heat.
Commonly used for grilling meats like steaks and burgers.
Can be made from stainless steel or cast iron for durability.
Allows fat to drip away from food, reducing grease.
Often used in outdoor cooking, such as barbecues and campfires.
The stress curve for a brittle material typically shows a steep increase in stress followed by sudden fracture.
Brittle materials have a linear elastic region where stress and strain are proportional.
After reaching the yield point, the stress curve sharply drops as the material fractures without significant plastic deformation.
Examples of brittle materials include glass, ceramics, and some polymers.
DCA analysis in reservoir refers to Decline Curve Analysis, a method used to estimate future production rates of oil and gas wells.
DCA is a common technique in reservoir engineering to forecast production decline over time.
It involves fitting a decline curve to historical production data to predict future performance.
Different decline curve models like exponential, hyperbolic, and harmonic are used depending on th...
Schlumberger Interview Experiences
145 interviews found
Patrick Benedict
Interview Questionnaire
6 Questions
- Q1. If the company tells me to come , l will come for an interview
- Q2. If l want to interview where is my company , if there is a company l will go
- Q3. One more thing l want to ask who paid for the flight ticket l went to an interview to get a better job l don` t have a job right now
- Q4. People don `t know my identity, who l really am . later l will tell you hat l work in a company .........in 1989 l was already working at ( Sarawak shell Ltd ) morning Shell Co. Ltd ..........my contract i...
- Q5. A metal framework used to cook food over an open fire a gridiron,
- Ans.
A gridiron is a metal framework used for grilling food over an open flame, enhancing flavor through direct heat.
Commonly used for grilling meats like steaks and burgers.
Can be made from stainless steel or cast iron for durability.
Allows fat to drip away from food, reducing grease.
Often used in outdoor cooking, such as barbecues and campfires.
- Q6. Look curiously or intently at ( someone ) through or as if though glasses.
Anonymous
I applied via Campus Placement and was interviewed in Sep 2024. There were 2 interview rounds.
If everyone is cheating you should also do it?
(4 Questions)
- Q1. Everyhting about project..
- Q2. Linear vs logistic regression
- Ans.
Linear regression is used for continuous variables, while logistic regression is used for binary outcomes.
Linear regression is used to predict a continuous outcome based on one or more input variables.
Logistic regression is used to predict the probability of a binary outcome based on one or more input variables.
Linear regression assumes a linear relationship between the independent and dependent variables, while logist...
- Q3. Normalization in dbms
- Ans.
Normalization in DBMS is the process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization involves breaking down data into smaller, more manageable tables and establishing relationships between them.
It helps in reducing data redundancy, minimizing data anomalies, and improving data consistency.
There are different normal forms such as 1NF, 2NF, 3NF, BCNF, and 4NF, each with spec...
- Q4. List array difference etc
- Ans.
Array difference is finding the elements that are present in one array but not in another.
Use set operations like difference to find elements in one array but not in another.
Example: arr1 = ['a', 'b', 'c'], arr2 = ['b', 'c', 'd'], arr_diff = set(arr1) - set(arr2) = ['a']
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Dec 2024. There were 2 interview rounds.
Just easy or medium level leetcode questions
The topic was how AI is affecting softare developer
Interview Preparation Tips
Selected
I appeared for an interview in May 2024.
(6 Questions)
- Q1. SQL table distributions.
- Q2. ADF switching questions?
- Q3. How do you optimize the performance?
- Ans.
Performance optimization in data engineering involves tuning queries, indexing, partitioning, and utilizing appropriate hardware.
Tune queries by optimizing SQL code, using appropriate joins, and avoiding unnecessary operations.
Utilize indexing to speed up data retrieval by creating indexes on frequently queried columns.
Partition data to distribute it across multiple nodes or servers for parallel processing.
Utilize appr...
- Q4. What is stored procedure?
- Ans.
A stored procedure is a set of SQL statements that can be saved and reused in a database management system.
Stored procedures are used to perform a specific task or set of tasks in a database.
They can accept input parameters and return output parameters.
Stored procedures can improve performance by reducing the amount of data sent between the database and the application.
They can also enhance security by controlling acce...
- Q5. Ranking functions in SQL?
- Ans.
Ranking functions in SQL are used to assign a rank to each row based on a specific criteria.
Ranking functions include RANK(), DENSE_RANK(), and ROW_NUMBER()
RANK() assigns a unique rank to each distinct row
DENSE_RANK() assigns a unique rank to each distinct row without gaps
ROW_NUMBER() assigns a unique sequential integer to each row
- Q6. Modelling questions.
Skills evaluated in this interview
It was a group presentation
(1 Question)
- Q1. What is DCA analysis in reservoir?
- Ans.
DCA analysis in reservoir refers to Decline Curve Analysis, a method used to estimate future production rates of oil and gas wells.
DCA is a common technique in reservoir engineering to forecast production decline over time.
It involves fitting a decline curve to historical production data to predict future performance.
Different decline curve models like exponential, hyperbolic, and harmonic are used depending on the res...
I appeared for an interview in Feb 2025, where I was asked the following questions.
- Q1. Mostly questions were from Artificial lift performance, especially based on ESP.
- Q2. Primary questions from Reservoir Engineering.
Ananay Kaushik
(1 Question)
- Q1. Technical questions
Rotten egg on inverted pen, social media
(1 Question)
- Q1. Interview questions
Sejal Shinde
I applied via Campus Placement and was interviewed in Jul 2024. There was 1 interview round.
(2 Questions)
- Q1. Explain your project
- Ans.
Developed a predictive model to forecast sales based on historical data
Collected and cleaned sales data from multiple sources
Performed exploratory data analysis to identify trends and patterns
Built a machine learning model using regression techniques
Evaluated model performance using metrics like RMSE and MAE
- Q2. Oops concept was asked
(1 Question)
- Q1. All analysis questions, missing values imputation, graph plotting, ML Mathematics and few python language questions.
(2 Questions)
- Q1. How you create a simulation model for FDP?
- Ans.
A simulation model for FDP is created by defining reservoir properties, fluid properties, well configurations, and production strategies.
Define reservoir properties such as porosity, permeability, and initial fluid saturation
Define fluid properties such as viscosity, density, and composition
Specify well configurations including well type, location, and completion design
Determine production strategies such as flow rates...
- Q2. Talk about your experience with fractured reservoirs?
- Ans.
I have extensive experience working with fractured reservoirs, including identifying, characterizing, and optimizing production from them.
Identifying fractured reservoirs through geological and geophysical data analysis
Characterizing fracture networks using well logs, core samples, and production data
Optimizing production from fractured reservoirs through techniques like hydraulic fracturing and reservoir simulation
Exp...
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