Analysis of polyethylene pipe behaviour in horizontal directional drilling field tests

2005 ◽  
Vol 32 (4) ◽  
pp. 665-677 ◽  
Author(s):  
Maria Anna Polak
Keyword(s):  
Drilling Fluid ◽  
Field Tests ◽  
Experimental Results ◽  
Pipe Material ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Polyethylene Pipe ◽  
Polyethylene Pipes ◽  
Pulling Force ◽  
The University

The paper presents results of both tests and analysis of polyethylene pipes installed using horizontal directional drilling (HDD). A total of seven full-scale HDD field installations were performed at the University of Waterloo. The test parameters were pull length, overcut ratio, quality of the drilling fluid, pipe diameter, and pipe material. The paper presents an overview of the testing methodology, instrumentation, and test specimens. The method for measuring strains along the length of the pipe is presented and discussed. Experimental results concentrate on pipe strains due to bending and axial deformations during HDD. Post-installation axial strains are also presented. A predictive model has been developed to analyze the pipe under various installation conditions. The model accounts for major mechanical contributions to the pulling force in HDD installations. The emphasis in this paper is on the comparison between theoretical and experimental results and the discussion of factors influencing pulling loads and strains in polyethylene pipes installed using HDD.Key words: horizontal directional drilling, polyethylene, pipe, analysis, tests, strain, pulling loads.

Horizontal Directional Drilling as a Solution for Crossing of Ridges in the Serrana Province, Mato Grosso, Brazil

2002 ◽  
Author(s):  
Denis Pellerin ◽  
Alaide M. Dura˜o ◽  
Jose´ E. F. P. Jardim ◽  
Carlos Pimenta ◽  
Kazumi Miura
Keyword(s):  
Drilling Fluid ◽  
Steering System ◽  
Gas Pipeline ◽  
Environmental Damage ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Environmental Preservation ◽  
Mato Grosso ◽  
Pilot Hole ◽  
Clastic Sedimentary

The crossing of a series of high, parallel, elongated and with steep scarp mountains in the Serrana Province, between Ca´ceres and Cuiaba´, Mato Grosso State, Brazil, constituted a great technical challenge for implementation of the Bolivia - Mato Grosso gas pipeline. Due to environmental preservation, the gas pipeline could not cross the crest of some of these mountains using conventional surface methods and the alternative of surrounding the mountains would have caused an extended additional path, with appreciable additional cost. The economically viable alternative was the horizontal directional drilling through the most critical mountains: Piraputanga Ridge with 850m, Cachoeirinha Ridge with 943m and Palmeiras Ridge with 867m. One of the difficulties was the drilling of the very compact and abrasive Alto Paraguay Group Proterozoic low metamorphic rocks intercalated with clastic sedimentary rocks. The horizontal directional hole intersects in high angles the strongly dipping layers of rocks. The layered sequences of sandstone capped by siltstones provide the aquifer condition to Raizama Fm. with strong water flow. To prevent any environmental damage, the conventional hole design was modified, which allowed the drilling with water, instead of bentonitic drilling fluid. The horizontal directional drilling consisted of a pilot hole with 10.14 inches diameter, drilled with down hole motor and an electromagnetic steering system. The first enlargement of the pilot hole went to 22” diameter and the last one to 30” using special reamer tools. The pipes of the Bolivia - Mato Grosso gas pipeline have 18” diameter, with a special line coating to prevent damages during pulling in contact with rocks. No problems occurred during the pulling operation of the pipes along the holes. The proposed three horizontal directional holes were very successful and the projected designs of the well were fully achieved, with a very small offset in the forecasted exit points. After long weeks of hole opening and preparatory works, all three pulling operations of the pipestrings along the holes went very smoothly.

scholarly journals Introducing Bentonite into the Environment in the Construction Stage of Linear Underground Investment Using the HDD Method

2018 ◽  
Vol 8 (11) ◽  
pp. 2210 ◽  
Author(s):  
Urszula Kwast-Kotlarek ◽  
Maria Hełdak ◽  
Jakub Szczepański
Keyword(s):  
Drilling Fluid ◽  
Breeding Site ◽  
Gas Pipeline ◽  
Common Frog ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Construction Stage ◽  
Alder Forest ◽  
Drilling Technology ◽  
June July

The study discusses the issue of introducing drilling fluid (bentonite) into the environment during the construction of linear underground investments, considering the example of the construction of the high-pressure gas pipeline, Czeszów—Kiełczów DN1000, which involved the use of the Horizontal Directional Drilling (HDD) method. The analyses concern the drilling stage as a low-waste technology, indicating the use and management of bentonite drilling fluid in a closed circulation cycle in the area of Pęciszów, poviat Trzebnica (Poland). The loss of drilling fluid in valuable natural areas during the construction stage of the gas pipeline has been analyzed. Drilling fluid is an element of the horizontal directional drilling technology (HDD). The analyzed area included a section of the route of the strategic gas pipeline, realized in June–July 2017 in an area of lowland ash and alder forest 91E0-3, a probable breeding site of the Bluethroat for a detailed description and common frog. The loss of the drilling fluid used in the drilling phase has been determined, depending on the type of soil and the related fraction as well as the possibility of treating the drilling fluid used to construct the drilling.

scholarly journals Land Application of Urban Horizontal Directional Drilling Residuals to Established Grass and Bare Soils

2020 ◽  
Vol 12 (24) ◽  
pp. 10264
Author(s):  
Joshua Daniel ◽  
Chad Penn ◽  
João Antonangelo ◽  
Hailin Zhang
Keyword(s):  
Drilling Fluid ◽  
Ground Cover ◽  
Field Studies ◽  
Bare Soil ◽  
Application Rate ◽  
Land Application ◽  
Sodium Absorption ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Significant Difference

Horizontal directional drilling (HDD) is a non-invasive alternative to trenching used for the installation of many common utilities. The process involves drilling fluid used to stabilize the borehole, lubricate the bit, and float cuttings to the surface. A sustainable alternative to landfill disposal is land application. Two field studies were conducted to determine the optimum application rate of HDD residuals to both established bermudagrass and bare soil seeded with bermudagrass. Residuals were applied at six rates ranging from 0 to 112 tons solid ha−1 for both trials. Soils were sampled 7, 30, and 90 days after application. Saturated paste and Mehlich-3 extractions were performed on all samples. Grass biomass was measured at the end of the study. No significant amount of nutrients or trace metals were found in the treated soils. All concentrations were in the range of typical soils. However, total dissolved solids (TDS) and sodium absorption ratio (SAR) increased with application rate. There was no significant difference in the yields of forage harvested on the established grass plots 110 days after application. Bare plots that received 22 tons solid ha−1 had higher percent ground cover than other rates. It is ecologically safe to apply HDD residuals up to 112 tons and 90 tons solid ha−1 to established bermudagrass and bare soil, respectively.

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