The Stress Analysis of Drilling Rod in Horizontal Directional Drilling during Trenchless Construction of Underground Pipelines

ICPTT 2009 ◽  
2009 ◽  
Author(s):  
Guichun Wang ◽  
Hao Wu
Keyword(s):  
Stress Analysis ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Underground Pipelines ◽  
Trenchless Construction

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.

Stress Analysis of a Gas Pipeline Installed Using HDD and Auger Bore Techniques

2008 ◽  
Author(s):  
Paul Cousens ◽  
Chas Jandu
Keyword(s):  
Natural Gas ◽  
Stress Analysis ◽  
Transmission Network ◽  
Storage Facility ◽  
Directional Drilling ◽  
Sources Of Information ◽  
Horizontal Directional Drilling ◽  
Design Code ◽  
Traffic Loading ◽  
Natural Gas Transmission

As part of an important project to reinforce the natural gas transmission network, a new pipeline has been constructed to transport natural gas from a major UK LNG storage facility into the national transmission system. The project involved the installation of several sections by trenchless methods, namely auger boring for a number of road crossings and significant lengths of horizontal directional drilling (HDD) beneath railroads, canals and marshland. The installation of pipelines using trenchless techniques such as HDD continues to increase in popularity. The various methods available offer advantages over traditional open cut techniques, in particular much reduced disruption during the construction of road and rail crossings. Furthermore, increased awareness and responsibility towards the environment leads us to seek installation methods that cause the least disruption at the surface and have the least impact to the environment. It was required to assess the proposed crossing designs against acceptable stress limits set out in company specifications and against the requirements of UK design code IGE/TD/1 Edition 4 [1], which requires that ‘additional loads’ such as soil loadings, thermal loads, settlement and traffic loading are accounted for within the stress calculations. However, it does not stipulate the sources of such equations and the pipeline engineer must rely on other methods and published sources of information. This paper presents the method used to analyse those sections of the new pipeline installed by auger boring and HDD focusing on the methods and formulae used to calculate the stresses in the pipeline from all loading sources.

Considerations on the Use of the Pneumatic Hammer for HDD Pullback Assistance

2014 ◽  
Author(s):  
Honggang Zhou ◽  
Ming Liu ◽  
Yong-Yi Wang ◽  
Daniel D’Eletto
Keyword(s):  
Impact Loads ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Pneumatic Hammer ◽  
Minimal Impact ◽  
Integrity Assessment ◽  
Underground Pipelines ◽  
Key Issues ◽  
Girth Welds ◽  
Surrounding Areas

Horizontal directional drilling (HDD) is a trenchless technique which has been frequently used to install underground pipelines due to its minimal impact on surrounding areas. In some circumstances, pneumatic hammers (or pipe rammers) are needed to assist HDD pull-back. The repeated impacts from the hammer can free a stuck pipeline during HDD pull back and facilitate the HDD installation. However, the operation of the hammer may plastically deform the pipe and/or induce fatigue flaw growth in girth welds which can negatively affect the integrity of the installed pipeline. Compared with the relatively large number of studies and guidelines on HDD, there are few studies on the application of the pneumatic hammer for the pull-back assistance. This paper describes the key considerations for using the pneumatic hammer in the HDD pull-back. The topic covered in the paper includes: (1) identification of key issues for integrity assessment; (2) realistic estimation of impact loads; (3) assessment of potential integrity threats; and (4) operation monitoring and documentation.

Evaluation of Hydraulic Fracturing Models and Their Limitations to Predict No-Drill Zones for Horizontal Directional Drilling

2018 ◽  
Author(s):  
Saeed Delara ◽  
Kendra MacKay
Keyword(s):  
Hydraulic Fracturing ◽  
Safety Factor ◽  
Standard Procedure ◽  
Accurate Determination ◽  
Strength Properties ◽  
Analytical Models ◽  
Alternative Methods ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
The Impact

Horizontal directional drilling (HDD) has become the preferred method for trenchless pipeline installations. Drilling pressures must be limited and a “no-drill zone” determined to avoid exceeding the strength of surrounding soil and rock. The currently accepted industry method of calculating hydraulic fracturing limiting pressure with application of an arbitrary safety factor contains several assumptions that are often not applicable to specific ground conditions. There is also no standard procedure for safety factor determination, resulting in detrimental impacts on drilling operations. This paper provides an analysis of the standard methods and proposes two alternative analytical models to more accurately determine the hydraulic fracture point and acceptable drilling pressure. These alternative methods provide greater understanding of the interaction between the drilling pressures and the surrounding ground strength properties. This allows for more accurate determination of horizontal directional drilling limitations. A comparison is presented to determine the differences in characteristics and assumptions for each model. The impact of specific soil properties and factors is investigated by means of a sensitivity analysis to determine the most critical soil information for each model.

scholarly journals Development of a rapid field testing method for metals in horizontal directional drilling residuals with XRF sensor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hailin Zhang ◽  
João Antonangelo ◽  
Chad Penn
Keyword(s):  
Moisture Content ◽  
Standard Method ◽  
Field Testing ◽  
Field Method ◽  
Filter Press ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Excess Water ◽  
Spiked Soil

AbstractPortable X-ray fluorescence (pXRF) spectrometer allows fast in-situ elemental determination without wet digestion for soils or geological materials, but the use of XRF on wet materials is not well documented. Our objective was to develop a rapid field method using pXRF to measure metals in the residues from horizontal directional drilling (HDD) operations so that proper disposal decisions can be made in-situ. To establish the procedure, we spiked soil samples with 4 concentrations of Cr, Ni, Cu, Zn, As, Cd, and Pb up to 1000 mg kg−1, and then the metal concentrations were determined by wet chemical method after drying and acid digestion (standard method), and by pXRF, also at laboratory conditions, after drying and at two different moisture conditions. The measurements by pXRF and standard method after drying and after removal of excess water (AREW) were highly correlated with slopes ranging from 0.83 ± 0.01 to 1.08 ± 0.01 (P < 0.001) for all metals. The relationship was better AREW than the saturated paste without removal of excess water and the moisture content affected only the accuracy of As, Cd, and Pb. The procedure established was successfully used for HDD residues collected from 26 states of US with moisture content ranging from 14 to 83% AREW. The pXRF was proven to be a reliable tool for fast detection of common metals in dried soils and HDD residues, and samples containing < 30% moisture content without needing to correct for moisture. If the moisture is > 30%, excess water in samples need to be removed with a commercially available filter press to achieve high accuracy. The developed procedures reduce time of metal detection from days to about an hour which allows drilling operators to make quick decisions on soil or HDD disposal.

scholarly journals DEVELOPMENT OF PERMEANT SOIL IMPROVEMENT SYSTEM SUITABLE FOR HORIZONTAL DIRECTIONAL DRILLING

2008 ◽  
Vol 64 (3) ◽  
pp. 272-282 ◽  
Author(s):  
Hiroyasu ISHII ◽  
Kanji HIGAKI ◽  
Shunsuke KAWAI ◽  
Shinji MIWA ◽  
Ryonosuke KOIZUMI ◽  
...  
Keyword(s):  
Soil Improvement ◽  
Directional Drilling ◽  
Horizontal Directional Drilling
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