Published Paper

A limit states design approach has been developed for geotechnical loads. The approach uses a strain based design format and requires the user to develop probability distributions for the maximum strain demand and minimum strain capacity.

Checks are provided for both local buckling and tensile rupture, which are calibrated to meet specified risk-consistent reliability targets. The safety factor and the criteria used to define the characteristic strain demand and capacity are defined as functions...

Abstract

Horizontal wells have been widely used to significantly increase reservoir exposure in a wide range of conventional and unconventional oil and gas recovery applications, including tight-rock and multi-stage fracturing, offshore, primary and thermal heavy oil projects. In the heavy oil and bitumen reservoirs of the Western Canadian basin, horizontal wells have been extensively employed in Steam Assisted Gravity Drainage (SAGD) and Cyclic Steam Stimulation (CSS) in-situ recovery projects....

In this article, C-FER's Thomas Dessein discusses probablistic defect management. Learn about:

  • Elements of a probabilistic failure model
  • Reliability-based defect management through a case study

Published in the 2018 issue of World Pipelines. 

Brian Wagg, reviews the challenges of using artificial lift for SAGD in the Canadian Oilsands. 

Featured in the March 2015 issue of Oilfield Technology.

Kirk Hamilton, C-FER Technologies, reviews the evolutionary challenges of today's oilfield from an OCTG connection evaluation perspective.

Featured in the May, 2017 issue of Oilfield Technology.

 

The Challenge

The percentage of oil and gas fields being developed with high curvature and horizontal wellbores continues to increase throughout the industry, and the ability to effectively and economically produce these wells is becoming increasingly important.  Horizontal and other directional wells are found in various applications, including unconventional oil, condensate and gas wells which are often developed using pad-drilled horizontal wells onshore, and platform-drilled directional...

Background

The Challenge

The percentage of oil and gas fields being developed with high curvature and horizontal wellbores continues to increase throughout the industry, and the ability to effectively and economically produce these wells is becoming increasingly important.  Horizontal and other directional wells are found in various applications, including unconventional oil, condensate and gas wells which are often developed using pad-drilled horizontal wells onshore, and platform-drilled...

TransGas undertook a risk-ranking project for storage facilities as the first step in the process of evaluating the financial and life-safety risk associated with the eight storage facilities that they operate in Saskatchewan, Canada. Based on this analysis, two salt cavern storage facilities were selected for a quantitative risk assessment. The most cost-effective maintenance actions for each cavern were determined as follows: Fault trees were prepared for all of the identified failure...

The technical challenge associated with building a deepwater pipeline is often measured by the combination of pipe diameter and water depth. In the past, projects like the Blue Stream Pipeline (24 inch diameter and 2,150 m depth) and Mardi Gras Pipeline (28 inch diameter and 2,200 m depth) set the frontier for such a challenge. However, recently proposed projects, such as the South Stream Pipeline (32 inch diameter and 2,200 m depth) are setting new records.

Large ground movements around pipelines caused by freeze-thaw cycles in northern climates can cause stresses that exceed the yield strength of linepipe. Strain-based design, requiring detailed information on the capacity of the linepipe to tolerate deformations without buckling or rupturing, is used to account for this severe operating environment.