Well cementing School

External Casing Packer with DV is utilized to reduce NPT during well cementing. These equipment allows to execute the cementing job in one job. How is that ? After pumping and displacing the first stage cement slurry, the packer will be set by pressure which provides a solid base to hold the hydrostatic pressure above it. That means the DV could be opened and the second stage cement slurry could pumped. #Ahmed_Ezhairi

In one of the fields the surface section is drilled using the blind drilling method due to severe caverns . This presents a major challenge during the cementing of the surface casing. To ensure cement returns to the surface, two cement baskets are used. What Happened? During the cementing job execution, no cement returns were observed at the surface, which is considered a bad indicator. As a result, four top jobs were performed, pumping over 30 m³ of cement slurry until returns were finally observed at the surface—noting that the original cement volume for the top job was approximately 8 m³. Failure Analysis To ensure cement returns to the surface, two cement baskets were run: one was placed between the conductor pipe and the surface casing, while the other was set in the open hole. By experience, this setup had succeeded multiple times in the past. However, it failed this time primarily due to the failure of the cement basket placed inside the annulus between the casings to provide a solid base to hold the cement slurry column. This failure resulted in three additional secondary cementing operations and a loss of 2 rig days.

"The devil is in the details." 🙂

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Discount on Well Cementing: Operations and Chemical Additives course by CHEMDUSTRY.

To calculate the required thickening time for a cement slurry, apply the following equation: Thickening time = mixing and pumping time + dropping wiper plug time + displacement time + safety time (1–2 hours). #Ahmed_Ezhairi

The cementing program should show the standoff ratio of the casing to make sure the casing is centralized, which leads to good cement bond quality. The figure below shows the real standoff ratio for 13 3/8" casing with 49 different types of centralizers. Do you think the ratio meets the requirements? #Ahmed_Ezhairi

What measures should be taken in the event of gas migration during well cementing? 🛢️ The recommended solution is a Cement Anti-Gas Migration and Gas Block Agent. This advanced additive effectively prevents gas migration, ensuring a reliable seal and enhancing the integrity of cement barriers in oil and gas wells. #Ahmed_Ezhairi

The five core responsibilities of a manager are: 1. Planning 📅 2. Organizing 🏗️ 3. Integrating 🤝 4. Measuring performance 📊 5. Developing people 👥 Peter Drucker #Ahmed_Ezhairi

🚨🚨🚨 Important Note 🚨🚨🚨 There is a special discount for this channel subscribers 😀 🙌 Just tell them you are from Well Cementing School channel. Good luck

CHEMDUSTRY Well Cementing: Operations and Chemical Additives What will you learn: ●Uses of cementing in oil and gas fields ●Overview of primary and remedial cementing ●Chemistry, properties, and industry standards of Cement ●Cementing additives : Cement retarders Spacer surfactants Fluid loss additives Dispersants Defoamers Loss circulation materials Suspension additives Expansion additives Thixotropic agents Gas migration agents Strength enhancement additives Accelerators Extenders Free water control additives Spacers & preflushes ●Laboratory testing ●Cement jobs design and field application ●Cement job evaluation Goals and benefits : ●Understand the fundamentals of well cementing and its critical role in well integrity. ●Gain in-depth knowledge of cement chemistry, properties, and industry standards. ●Explore different cement additives, their functions, and how they impact performance. ●Develop essential knowledge in laboratory testing of cement properties. ●Understand the cementing job design process and how to apply it in field operations. ●Learn how to evaluate cementing jobs to ensure proper zonal isolation and well integrity. Who should attend : ●Cementing operators & specialists ●Service operators & specialists ●Drilling engineers & specialists ●Pumping operator ●Well intervention engineers ●Workover engineers ●Field chemists ●Account managers Duration 1 day ( 6 hours ) Fees Please contact : info@chemdustry.com Delivery and Date: Delivery: The course will be conducted online using Microsoft teams or Zoom Date : 08 AUGUST 2026 What will you receive: After completing the course you will receive: Training slides and other related documents. Certificate of completion About the instructor : Jim Beddow Jim Beddow has over 40+ years of experience in the oilfield pumping services industry, with expertise spanning cementing, special tools, coil tubing, nitrogen, acidizing, and hydraulic fracturing. He has worked globally, building and leading high-performing regional teams while overcoming cultural and language barriers. As a corporate manager, he developed complex training programs and authored multiple technical manuals for a multi national oilfield services company. His background includes operations, planning, and project management, with a strong focus on strategic business development. Jim excels in team leadership, cross-functional communication, and driving operational efficiency.

Cementing Program It is the main reference for the Cementing Supervisor and Operator. It includes all details of the execution, such as Well Data, pumping parameters, material quantities, simulations, etc. Always ask for the Cementing Program first. #Ahmed_Ezhairi