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One of the oldest names in geomechanical modeling has learned some new tricks, and like so many recent advances in the oil and gas industry, it has everything to do with the North American shale revolution. This paper presents results from the analysis of the effect of in-fill drilling on parent-well performance, and describes a simplistic approach to understanding the effect of the quest for operational efficiencies and economic cycles on development strategies. One of the biggest ways to lower the cost of production from shale would be to identify zones that are productive, or not, before fracturing them.
A high-carbon-dioxide (CO2) carbonate gas field offshore Sarawak, Malaysia, is scheduled for development. Reservoirs in this region have an average clay content of 8%; more than 50% of this clay content is migratory illite, and 15% is migratory kaolinite. The complete paper presents a numerical work flow to simulate the effect of flow-induced fines migration on production decline over time in deepwater reservoirs. Production and drawdown data from 10 subsea deepwater fractured wells have been modeled with an analytical model for unsteady-state flow with fines migration.
In this paper, the authors consider the effect of water chemistry on water/rock interactions during seawater and smart waterflooding of reservoir sandstone cores containing heavy oil. The authors detail the development of a technique based on surface-to-borehole controlled-source electromagnetics (CSEM), which exploits the large contrast in resistivity between injected water and oil to derive 3D resistivity distributions, proportional to saturations, in the reservoir. In the complete paper, the authors present a novel methodology to model interwell connectivity in mature waterfloods and achieve an improved reservoir-energy distribution and sweep pattern to maximize production performance by adjusting injection and production strategy on the well-control level. This paper addresses the challenges in modeling highly unstable waterflooding, using both a conventional Darcy-type simulator and an adaptive dynamic prenetwork model, by comparing the simulated results with experimental data including saturation maps. Understanding of formation damage is a key theme in a waterflood project.
A senior process engineer from TechnipFMC discusses the ways in which inadequate design and sizing methodologies can lead to poor scrubber performance. The main drivers for sizing gas scrubbers have been performance requirements, process conditions, and project specifications. Computational fluid dynamics modeling has proven promising for improving scrubber performance. Jimmie Riesenberg, senior process adviser and separations lead at Chevron, discussed the finer points of a scrubber design in a presentation held by SPE Separations Technology Technical Section. The SPE Separations Technology Technical Section (STTS) continues its study of gas scrubbing technology with a special session at the 2015 SPE Annual Technical Conference and Exhibition on 28–30 September in Houston.
The complete paper discuses a well with a history of sand production that exhibits long cyclic slugging behavior. In the complete paper, the authors reduce nonuniqueness and ensure physically feasible results in multiwell deconvolution by incorporating constraints and knowledge to methodology already established in the literature. In the complete paper, a novel hybrid approach is presented in which a physics-based nonlocal modeling framework is coupled with data-driven clustering techniques to provide a fast and accurate multiscale modeling of compartmentalized reservoirs. Fit-for-purpose tactics likely will be of ever-increasing focus going forward. If it is not adding value, it should not be done.
While the ongoing trends in data science and engineering analytics are going to show more benefits in lowering production costs and increasing efficiencies, the well-established reservoir and production engineering disciplines will continue to be critical for reservoir performance improvements. Unconventional producers around the world have been hamstrung by expensive and cumbersome options when it comes to obtaining reservoir data. Among the latest ways to break past these barriers is a new method developed by Canadian researchers and field tested in Australia’s unconventional frontier. The proposed restructuring plan aims to eliminate about $74 million of the company’s debt. The complete paper presents a technical discussion of a new microsampling technique for LWD and a corresponding wellsite technique to provide compositional interpretation, contamination assessment, reservoir-fluid compositional grading, and reservoir compartmentalization assessment.
The national oil company’s remote northern region has delivered a pair of greenfields that await further drilling before a reserves estimate can be made. Unconventionals at a Crossroads: Where Do We Go From Here? URTeC 2020’s opening plenary session panel shared insights into how the shale industry can scale technology, fiscal restraint, and social responsibility into a sustainable business case for a new energy landscape. The silver lining for those overseeing the unprecedented shut ins of tight-oil wells is the potential to acquire a wealth of reservoir data. But first, petroleum engineers need to monitor these wells and use the right analysis toolbox. A downhole compressor solution based on advanced magnetic technologies completed its first field trials in an unconventional gas well.
Presentation 3: What We Now Know or Think We Know About Induced Seismicity in Texas? Induced seismicity from the injection of fluids into the earth remains a significant concern for oilfield activities such as saltwater disposal and hydraulic fracturing operations. The number of induced earthquakes occurring in the oil and gas producing regions of the Central United States and Western Canada has been declining over the past few years, highlighting the successful implementation of improved regulations and effective operational practices. However, technical engineering and geoscience challenges remain. This opening session will explore the current state of learnings and progress since the last workshop in November 2017, and highlight forward opportunities and challenges.