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Fractured Carbonate Reservoirs

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DL Abstract

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Using examples from shale reservoirs worldwide, I demonstrate the diversity of shale-hosted fracture systems and present evidence for how and why various fractures systems form. Core and outcrop observations, strength tests on shale and on fractures in core, and geomechanical models allow prediction of fracture patterns and attributes that can be taken into account in well placement and hydraulic fracture treatment design. Both open and sealed fractures can interact with and modify hydraulic fracture size and shape. Open fractures can enhance reservoir permeability but may conduct treatment fluids great distances, in some instances possibly aseismically.

Explorer Article

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Industry and academia are teaming up to pump up activity in the Mississippian of the Midcontinent United States.

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The golden oldie: Operators’ eyes tend to light up when talking about the Permian Basin, with good reason – the venerable play is not only still going strong, it keeps providing exciting new chapters to its history.

2173
 

A new hydrocarbon play in Kansas and Oklahoma is drawing interest to possibilities in several Mississippian formations.

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Sweet sound of success: The spotlight turns to oil in the Bakken shale, and the focus was squarely on the sweet spots.

Explorer Emphasis

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Across the board: The Mississippi Lime play proves that hydraulic fracturing and horizontal drilling techniques can be used for more than just shale production.

1984
 

Surprise! Ordinarily a target for oil production, the Cretaceous Niobrara formation is proving to be more versatile in Colorado’s Piceance Basin.

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What goes up must come …: Despite the seemingly never-ending cycles of boom and bust, operators in the Rocky Mountain region are finding ways to stay in the game.

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Oil and gas finders are enamored with the Williston Basin these days, looking for the next big find in the upper Devonian-Lower Mississippian Bakken formation.

Explorer Geophysical Corner

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Last month in this space we analyzed the relations of fracture patterns and layer curvature in clay models. This month we examine these relations in a central Oklahoma field developed by Pathfinder Exploration, Norman, Okla.

Short Course

Austin Texas United States 29 April, 2014 01 May, 2014 1518
 
Austin, Texas, United States
29 April - 1 May 2014

The overall goal of this course is to provide tools for efficient and effective re-exploration and development. It uses a two-part approach. First it uses petrophysical analysis to understand all that can be derived from examination of standard open-hole logs. This is followed by integrated approaches to discover key factors controlling oil and gas distribution in carbonate reservoirs in the greater Midcontinent USA. Methodologies and workflows reviewed include geosteering and evaluation of horizontal wells and optimizing carbon storage utilization and management.

Casper Wyoming United States 08 September, 2014 12 September, 2014 1513
 
Casper, Wyoming, United States
8-12 September 2014

Take advantage of this unique opportunity to learn all the aspects related to the understanding and modeling of fractured reservoirs. Attendees will take geologic concepts and use them in reservoir modeling through hands-on sessions devoted to the examination of outcrop, core and log data. They will use that information and a software to create 3D fractured reservoir models. Using actual Teapot Dome (Wyoming, USA) field data from the Tensleep and Niobrara Shale formations and a hands-on approach, the workshop allows the geoscientist to identify fractures and to construct predictive 3D fracture models that can be used to identify productive zones, plan wells and to create fracture porosity and permeability models for reservoir simulation.

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