Deep Water

Tech Paper: Pulling Subsea Wellhead Plugs Using a Slickline Downhole Electrical Power Generator Tool

Viable and cost-effective option in Gulf of Mexico deepwater environment A downhole electro-mechanical power-unit tool was used to provide anchored power to pull crown plugs in a single run and in reduced time. This setup has the capability to pull subsea crown plugs that often require greater force than is possible with traditional conveyances without requiring time and resources to reduce hydrostatic pressure....

Case Study: Saving Deepwater Rig Time with Cutting-Edge Technology and Collaboration

USD 10 million saved with openhole wireline services in deepwater presalt exploration wells in Angola CHALLENGE – In Angola, drilling complex formation presalt wells, with water depths of over 5000 ft, can be challenging and expensive. In a logistically challenging country, complications arising from missing the target and any fishing jobs in these water depths can be both costly and detrimental to any...

Tech Paper: Next-Generation Modeling for Long-Term Development Planning – Case Study

Modeling used to fully integrate the subsurface models with the surface model of an offshore greenfield In conventional modeling, the flow from the reservoir to the wellbore is decoupled from the flow in the surface pipelines and the facilities. This approach is sufficient during history matching; however, it is less accurate for future performance predictions where precise hydraulic calculation is necessary to assess the...

Case Study: Halliburton Displaces Major Competitor in Wellbore Cleanout Operation

Three times more debris recovered than competitor in a Gulf of Mexico deepwater well CHALLENGE – A major operator in the Gulf of Mexico needed a tool that could successfully perform a wellbore cleanout operation in their deepwater well with a total depth of over 26,000 feet. Their current tool was not able to handle the job. They looked to Halliburton for a solution. SOLUTION...

Tech Paper: Rigless Optimization of CT Stimulation in Saudi Arabia’s Offshore Laterals

Well performance improvements up to 200% have been recorded A carbonate field in the northeastern part of Saudi Arabia is undergoing major field development. 75% of the wells are extended reach wells (ERWs) or mega-reach wells. Reservoir pressure maintenance is essential, which is why peripheral water injectors and oil producers (OPs) require matrix stimulation to achieve developmental targets. The field’s offshore portion contains...

Tech Paper: A Guide to Relief Well Trajectory Design using Multidisciplinary Collaborative Well Planning Technology

  Effectively planning a relief well is becoming a required skill for drilling engineers involved in the well planning process Existing rules for relief well planning in the Gulf of Mexico (GoM) have been revised. The US government now requires operators to submit relief well trajectories to obtain a deepwater drilling permit, and BP requires that at least two relief well locations be verified and available...

Tech Paper: Application of Lean Principles to Accelerate Project Development in the North Sea

Lean principles cut North Sea development completion by two years Oil and gas project development in the North Sea is known for large discoveries, requiring the need for highly complex, capital intensive infrastructure, which can take decades to complete. Recognizing that such discoveries were becoming less common, a faster and less capital intensive approach was needed to develop smaller fields. The idea was...

Tech Paper: Addressing Challenges for Successful P&A on a Deepwater Compliant Tower using Hydraulic Workover

Regulatory requirements and severe weather in the Gulf of Mexico make for challenging hydraulic workover conditions With the current government environmental directives in the Gulf of Mexico (GoM), operators are challenged to ensure that idle iron wells are correctly handled to meet regulatory requirements in the full abandonment of the wells and their platform structures. With this, there is a need to remove...

Case Study: Reliable Well Abandonment System Saves Time and Money During Storm Evacuation

Temporary well abandonment system stays intact in GOM for nine years, despite hurricanes CHALLENGE – It was hurricane season in the Gulf of Mexico, and a Halliburton client with a jack-up rig was faced with the challenge of oncoming Hurricane Katrina and a secondary hurricane, Hurricane Rita, while a well was being drilled. Evacuating personnel was the priority, but the risk of equipment damage left in...

Tech Paper: Managed Pressure Cementing Helps Reach TD in Ultra-HP/HT Well in Malaysia

Experiences and good practices from MPC successful execution This paper discusses the experiences and good practices established from successfully executing two managed pressure cementing (MPC) jobs within an ultra high-pressure/high-temperature (HP/HT) well in offshore Malaysia. The risks associated with cementing in sections with narrow margins between pore pressure and fracture gradient can often limit the length of each cased section, hence limiting the...

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