Monitoring of Pull-Load and Borehole Pressure During HDD Installations

2004 ◽  
Author(s):  
Erez N. Alloche ◽  
Mike E. Baumert
Keyword(s):  
Quality Control ◽  
Electronic Record ◽  
Mitigation Measures ◽  
Construction Technology ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Timely Manner ◽  
Design Models ◽  
Real Time Information ◽  
Time Information

Quality control and quality assurance during horizontal directional drilling installations (HDD) is a topic that is gaining increasing interest and concern in the engineering community as HDD is becoming a mainstream construction technology. The paper describes a method for increasing the transparency of pulled-in-place trenchless installations using an array of sensors mounted within a protective casing, located ahead of the pipe product pull head. The data collected by the sensors, including pull-load and borehole pressure, is stored on a memory chip placed onboard the platform, thus creating a permanent electronic record of the installation. This data can be used by contractors, consultants and owners for quality control purposes and the improvement of design models and construction practices. In addition, real-time information can be provided to the operator, giving him/her the opportunity to detect potential problems in a timely manner so that appropriate mitigation measures can be taken.

Post-Installation Geotechnical Issues Associated With Large-Scale HDD Crossings

2004 ◽  
Author(s):  
Alex Baumgard ◽  
K. Wayne Savigny ◽  
Peter Cocciolo
Keyword(s):  
Large Scale ◽  
Site Investigation ◽  
Mitigation Measures ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Case Histories ◽  
North Central ◽  
Ground Conditions ◽  
Major River ◽  
Major Factors

Horizontal Directional Drilling (HDD) is increasingly being used as a technique to install pipeline through challenging conditions. With this increased use, several post-installation geotechnical issues have, quite literally, surfaced, often many months or years following the original installation. These issues include sinkhole development around the entry/exit points for the HDD operations and settlement of the surface above the HDD bore path. Both can be attributed to two major factors, those involving unfavourable ground conditions and those involving problematic installation procedures. Several examples of each of these factors are described along with mitigation measures designed to prevent both sinkhole and settlement from occurring following HDD installation. Case histories from two large HDD crossings are subsequently presented which illustrate the potential magnitude of these issues and the steps that are often required for repair; the first from a crossing of the Fraser River outside of Vancouver, Canada, and the second from a crossing of a major river in north-central Argentina. In both of these cases, large sinkholes formed behind the HDD exit points, resulting in property damage and possibly threatening neighboring utilities. Site investigation and design techniques implemented to minimise the potential for sinkhole development and settlement are discussed, and several remediation options used in the cases histories are presented.

The Impact of Risk in Horizontal Directional Drilling

2012 ◽  
Author(s):  
Manley Osbak ◽  
Alireza Bayat ◽  
Carrie Murray
Keyword(s):  
Risk Mitigation ◽  
Risk Index ◽  
Business Case ◽  
Quantitative Information ◽  
Mitigation Measures ◽  
Directional Drilling ◽  
Information Industry ◽  
Project Schedule ◽  
Horizontal Directional Drilling ◽  
The Impact

The risks, associated with horizontal directional drilling (HDD) can have a significant impact on project schedule and cost. Contractors, engineers and owners are generally aware of the potential impact of this risk, but the awareness is largely qualitative in nature, and is thereby limiting for pointed decision making and the development of measured risk mitigation. Without quantitative information, industry stakeholders are without the means to evaluate risk strategies and identify appropriate risk mitigation measures in a manner that adequately develops and supports the business case for risk mitigation. As a result, the industry often has little choice other than to resort to accepting the risk and hoping for the best or transferring the risk using contractual methods. In order to move to a position of active assessment and mitigation, the industry needs quantitative information about the overall impact of risk as well as a comprehensive enumeration of risk events, the probability of occurrence and the impact of individual events. This paper looks at the general impact of risk as has occurred on 100 medium and large HDD projects. The general impact, in terms of schedule (and by extension, cost), serves to illuminate the need for structured risk mitigation. The paper also lists the risk events that have occurred on these 100 projects, as well as the frequency of occurrence, the average schedule impact and the Risk Index of each event type.

scholarly journals Containing Future Epidemics With Trustworthy Federated Systems for Ubiquitous Warning and Response

2021 ◽  
Vol 2 ◽  
Author(s):  
Dick Carrillo ◽  
Lam Duc Nguyen ◽  
Pedro H. J. Nardelli ◽  
Evangelos Pournaras ◽  
Plinio Morita ◽  
...  
Keyword(s):  
Citizen Participation ◽  
System Reliability ◽  
Mitigation Measures ◽  
Use Case ◽  
Remote Patient Monitoring ◽  
Distributed Ledger ◽  
Remote Patient ◽  
Real Time Information ◽  
Time Information ◽  
Active Citizen

In this paper, we propose a global digital platform to avoid and combat epidemics by providing relevant real-time information to support selective lockdowns. It leverages the pervasiveness of wireless connectivity while being trustworthy and secure. The proposed system is conceptualized to be decentralized yet federated, based on ubiquitous public systems and active citizen participation. Its foundations lie on the principle of informational self-determination. We argue that only in this way it can become a trustworthy and legitimate public good infrastructure for citizens by balancing the asymmetry of the different hierarchical levels within the federated organization while providing highly effective detection and guiding mitigation measures toward graceful lockdown of the society. To exemplify the proposed system, we choose a remote patient monitoring as use case. This use case is evaluated considering different numbers of endorsed peers on a solution that is based on the integration of distributed ledger technologies and NB-IoT (narrowband IoT). An experimental setup is used to evaluate the performance of this integration, in which the end-to-end latency is slightly increased when a new endorsed element is added. However, the system reliability, privacy, and interoperability are guaranteed. In this sense, we expect active participation of empowered citizens to supplement the more usual top-down management of epidemics.

EMERGENCY RESPONSE IN THE PIPELINE CONSTRUCTION BY HORIZONTAL DIRECTIONAL DRILLING

2015 ◽  
pp. 91-96
Author(s):  
I. E. Kiryanov ◽  
Yu. D. Zemenkov ◽  
S. M. Dorofeev ◽  
V. S. Toropov
Keyword(s):  
Emergency Response ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Pipeline Construction ◽  
Trenchless Construction

On the basis of analyzing the characteristics of used materials and the parameters of trenchless transitions profiles was developed emergency response, including several schemes of release a pipe jammed in the hole during the pipeline pulling in the pipeline construction by horizontal directional drilling. Proposed schemes applicability analyzed for trenchless construction real conditions.

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