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Editorial: Reinventing Carbonate Petrophysics
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Subsea completion technology is stretching the capability of offshore operators to produce marginal reservoirs under harsh conditions. However, temperature, pressure and fluid conditions may hinder movement of hydrocarbons through subsea production systems. Flow assurance, flow boosting and surveillance technology must be incorporated into the initial production-system engineering design to prevent potential flow problems. This article provides an overview of strategies to manage a production stream as it travels from reservoir to riser.
Carbonate reservoirs are notoriously difficult to exploit. To recover hydrocarbons from carbonate rocks efficiently, scientists and engineers perform formation evaluation and completion optimization at the wellbore scale. At the reservoir scale, operating companies strive to enhance production from existing wells and optimize the placement of new wells. Innovative approaches enhance carbonate formation evaluation, and straightforward rock classification schemes serve as useful frameworks for reservoir-management decisions.
Hydrogen may become the ultimate clean fuel. Through reaction with oxygen, it can be converted to work and heat, leaving behind only water. Widespread commercial application, however, is expected to be decades in the future and requires significant scientific and technological breakthroughs. This article examines the promise of hydrogen as a fuel and the practicalities hampering its deployment.
Automated drilling systems improve drilling efficiency and reduce both risk to personnel and operating costs. Nevertheless, the industry must move to the next level of technology as it operates in increasingly challenging environments. This article briefly reviews the automation of drilling processes and highlights a recent step forward in remote automated drilling.
An increasing number of operators are gravel packing long openhole intervals to reduce sand production. This article reviews techniques that improve high-angle and horizontal completions in weakly consolidated formations. Case histories from Nigeria and Azerbaijan illustrate how openhole gravel packs improve well-completion reliability, longevity and productivity, while reducing overall costs.
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