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Drilling with a Riser from a Floating Rig for the Surface Casing and...
When in shallow offshore environments, the formation in which the conductor is set is normally weak, which means it struggles to contain the pressure that occurs during a gas kick. To avoid an...
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Drilling (from a bottom supported rig) for the Surface Casing and...
When penetrated from a platform or a jack-up, shallow gas reservoirs have the potential of being more hazardous. Since the conductor almost reaches the floor of the rig, any kick products discharge...
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Drill Pipe Back-Off Operation
For back-off operations to be successful on the first try, plans must be devised and then carefully followed; this should also keep the risk of injury low for rig floor personnel. Of course, the...
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Basic Understanding about Cameron U BOP – Rams Blow Out Preventer
Suited towards surface or subsea applications, the Cameron Type ‘U’ preventer is one of well known wellbore pressure assisted ram preventers . It can come with a single ram (Figure 1) or double rams...
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Volume Gain from Slug
Slug mud is typically pumped into the drill string in order to push the mud inside the drill pipe down so the drill pipe will be clean and ready for pulling out of hole. Since slug is heavier, it will...
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Introduction to Diverters in Well Control
Considering the danger of shallow steam or gas zones requires unique well control considerations. Whenever the necessary casing shoe integrity cannot be obtained due to the shallowness of the zones...
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Risks and Equipment Considerations for Surface Diverting (Well Control)
Of all diverts, many studies show a failure rate of between 50% and 70%. According to the same studies, when it comes to well control issues, shallow gas blowouts is the leading cause of offshore rig...
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Wireline Tool Recovery and Junk Removal Equipment for Drilling and Workover
In order to fish for wireline tools out of the hole, we must use different equipment than would be used for pipe recovery. Common wireline tool issues center around the cable being tangled or wadded in...
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Accumulators for Surface Well Control System and Requirements
The accumulator unit is one of the critical well control equipment and its main aim is to supply the pumps with atmospheric fluid while also storing high pressure operating fluid for operating BOP...
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Classes of Oil Well Cement Used in Petroleum Industry
Oil well cement adheres to API Specification 10 and is categorized into eight classes, labeled A to H, based on its specific properties. Among these, Class G and Class H serve as foundational well...
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What are Cementing Additives to Enhance Cement Properties
Cementing in the oil and gas industry involves a meticulous process, and cementing additives play a crucial role in fine-tuning the properties of cement slurries. These additives are carefully selected...
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Casing and Cementing Hardware in Oil Well Operations
Cementing operations in the oil and gas industry are a critical component of well construction and integrity. Proper casing and cementing hardware play a crucial role in ensuring the successful...
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Key Factors for Successful Oil Well Cementing
To achieve a successful oil well cementing and ensure zonal isolation in oil well cementing, efficient mud displacement is crucial. Inadequate mud removal can lead to problems like cement channeling,...
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What are Squeeze Cementing Techniques?
Table of Contents Toggle Reasons for Squeeze CementingThree Main Techniques for Squeeze CementingHesitation Squeeze:Low Pressure Squeeze:High Pressure Squeeze:What is the Preferred Method?Conclusion...
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Why Do We Keep Cement Samples in Oil Well Operations?
Table of Contents Toggle We Keep Cement Samples Because of The Following ReasonsQuality controlVerificationTroubleshootingRegulatory complianceResearch and developmentLitigation and liabilitySummary...
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Understanding the Dynamics of Tripping Pipe in Well Completions and Workovers
Tripping pipe into and out of a well constitutes a commonplace activity in completion and workover operations. However, alarming statistics reveal that a significant number of kicks occur during these...
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Understanding Kick and Influx in Drilling and Completion Operations
In the realm of well control, encompassing both drilling and completion operations, the terms kick and influx hold significant importance. This article aims to explain the distinctions between these...
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Understanding Factors Leading to Low Density Drilling Fluid and Potential...
Table of Contents Toggle Accidental Dilution and Fluid AdditionGas CuttingOil or Saltwater CuttingSettling of Mud Weighting MaterialsLoss of Equivalent Circulating Density (ECD)Cementing...
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What are HCR Valves?
An HCR valve, also recognized as a High Closing Ratio valve, is a specialized type of gate valve widely employed in well control systems, particularly within the blowout preventer (BOP) stack. Its...
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What is a Back Pressure Valve (BPV)?
A Back Pressure Valve (BPV), also known as a tubing plug, serves as a one-way check valve typically placed within a specially machined profile in the tubing hanger or plug bushing. Its primary...
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