Technical Papers

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: Selective Stimulation Using Self-Degrading Diverter Deployed During Completion Stage

Challenges, lessons learned and step-by-step procedures to achieve outstanding results In selective stimulation of a well with a complex completion in a naturally fractured carbonate reservoir in a mature field, the use of a self-degrading diverter deployed by rigless means through 1 1/2-in. coiled tubing (CT) was necessary in addition to an effective acidizing schedule using relative permeability modifiers (RPMs) as an additional diverter....

Tech Paper: Coiled Tubing Multistage Horizontal Fracturing Technology Egyptian Case History

Lessons learned to achieve maximum production and improve efficiency of multistage fracturing operations Economic production from marginal reserves in mature fields has always been a major development challenge. Drilling horizontal wells and deploying coiled tubing (CT) multistage hydraulic fracturing stimulation treatments is now a proven solution for mature field development because it exposes more stimulated production zones. Khalda and Umbarka fields are two mature...

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...

Tech Paper: Strain-Gauge Measurements Used to Identify Wellbore Tortuosity

Bending moment used by this new approach to show severity of wellbore tortuosity To determine wellbore tortuosity, the industry uses different methods. Well trajectories can be calculated between survey stations in the wellbore with the resolution of the tortuostity dependent on the survey frequency. Friction factors within the wellbore can be back calculated from surface torque-and-drag information and used as empirical indicators of...

Tech Paper: Conditioning Old Vertical Wells using Pinpoint Completion Techniques to Stimulate and Test Vaca Muerta

Hydraulic fracturing to test productivity of Argentine shale play One of the most promising targets for resource rock stimulation in South America is the Vaca Muerta (VM) shale in western Argentina. Because of high initial costs and also the typical reservoir information that must be acquired, it is common practice for operators to begin exploration projects with vertical wells. This is also the...

Tech Paper: Far Mobility Evaluation Using Minifrac Analysis in a Deep Sandstone Formation: Case Histories

Hydraulic fracturing treatment is one of the major contributors to increase oil and gas production. In most areas, fracturing has remarkable impacts on gas potential and sustainability. Proper design and implementation of fracturing technology and calibration of fracturing parameters provide significant technical and economic advantages. The minifrac treatment conducted before the main hydraulic fracturing, is a tool often used to conduct some essential evaluations of the...

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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