Technical Papers

Tech Paper: Learnings from Cementing the Deepest Expandable Casing under HP/HT Conditions in Mediterranean Offshore Egypt

The design and execution phases are important pieces when cementing under difficult conditions The adequate cementation of an expandable tubular can be challenging but is essential for long-term casing integrity. Such cementing jobs are especially crucial under high-pressure/high-temperature (HP/HT) conditions for many reasons, including but not limited to rigorous HP/HT laboratory testing schedules, selection of proper cement volume and fluid density, etc. A failed...

Tech Paper: Successful Application of Plug and Hydrajetting Technique during Multistage Fracture for Horizontal Wells with Coiled Tubing

Reducing NPT up to 30%, this Coiled Tubing method allows for continuous completion of fracturing stages This paper presents an alternative for operators regarding tools and methods using coiled tubing (CT) during the implementation of horizontal completions. To help address challenges faced developing horizontal completions, both cemented liners and open holes have been widely used in conventional and unconventional reservoirs. Various completion techniques have...

Tech Paper: Successful Utilization of E-line Tractor in Horizontal, High Pressure and High Temperature Gas Wells

This state-of-the-art technology helps meet the technical objectives of large rigless production enhancement Growing gas resource exploitation in Saudi Arabia has increased activity in drilling deep, high pressure gas reservoirs with marginal to low permeability. Such wells generally require stimulation operations to induce production. To increase the reservoir contact area, a significant number of wells are constructed with long reach horizontal sections. Multistage fracture...

Tech Paper: First Large-Bore Expandable Liner Hanger Deployment Offshore Gabon – Case Study

Technology helps improve reliability and increase versatility in deepwater operations The capability to reliably deploy large-bore hangers in offshore applications is critical to project success (McCormick et al. 2013). This case study discusses the the deployment of a large-bore expandable liner hanger (ELH) for the first time in a West African country and how the deployment of a 16-in. liner inside 20-in. casing at...

Tech Paper: Completion Design Optimization for Barnett Oil Producing Area

Focus on subsurface insight and collaboration are essential to helping discover and produce more oil and gas Throughout the past several years, economic and technological advancements in the North American shale market with respect to drilling and hydraulic fracturing operations have helped create a “typical” operating scheme for producing from the multiple shale formation reservoirs currently being exploited. This typical scheme focuses on...

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....

Tech Paper: Refracturing Design for Underperforming Unconventional Horizontal Reservoirs

Comparison of different Haynesville shale refracturing design treatments, results, and diagnostics This paper discusses refracturing design considerations to increase the estimated ultimate recovery (EUR) on underperforming wells in a refracturing scenario. A method for, and case histories of, using an environmentally acceptable, self-removing particulate diverter that has proven to be successful in the refracturing efforts of horizontal unconventional reservoirs are provided. This method is...

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...

Tech Paper: Facies Architecture, Channel System and Paleoflow Pattern of a Young Sandstone Reservoir using Borehole Resistivity Images

Integrating resistivity images and openhole logs provides facies architecture to enhance recovery to the optimal production The Miocene age shallow unconsolidated sandstone formation in Kuwait contains viscous oil whose distribution is primarily controlled by depositional facies and their diagenetic modifications. This study integrates core-calibrated resistivity images with openhole logs to obtain high-resolution facies logs with continuous array of oriented depositional structures, facies types,...

Tech Paper: Next Generation Diagnosis and Optimization Workflow for Digital Oilfield

Multidimensional surveillance using real-time and historical data handles thousands of wells more effectively for problem identification and optimization Each year, oil companies experience declining production rates and face challenges in terms of sustaining production targets, diagnosing well problems, and designing solutions to address such production decline. Identifying problems and opportunities at the correct moment, without losing time, is critical to the success of...

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