Pneumatic drilling fluid (or gas-based mud; air-based mud) is used to drill in areas where the use of conventional drilling fluids is not feasible. They are used to drill in depleted zones, areas with low reservoir pressures, and where a loss of circulation is predicted. Pneumatic drilling fluid… View Full Term
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By: Tabitha Mishra | Civil Engineer, Technical Content Writer
By: Denise Sullivan | Technical Writer @ Trenchlesspedia
Tensile force is the stretching forces acting on the material and has two components namely, tensile stress and tensile strain. This means that the material experiencing the force is under tension and the forces are trying to stretch it. When a tensile force is applied to a material, it…
An invert level is defined as the elevation of the inside-bottom of a pipe, trench, culvert, or tunnel. It may also be considered the "floor level" of a pipe. Invert levels are essential for assessing the flow in a piping system. For example, the invert of a municipal sewer…
Hoop stress is the stress that occurs along the pipe's circumference when pressure is applied. Hoop stress acts perpendicular to the axial direction. Hoop stresses are tensile and generated to resist the bursting effect that results from the application of pressure. Three principal…
Site investigation is an integral part of any construction project, and should be attributed as much significance as would be ascribed to any other part of the project. The risk associated with undertaking a project without adequate site investigation is monumental. It's wiser to be…
By: Tabitha Mishra
Joining pipes is one of the most vital aspects of completing any plumbing job, whether it's new or a rehabilitation. The pipe joints must withstand the pressure from each line going through the joint. To employ the best pipe joining method, workers must understand the different…
By: Denise Sullivan
City lines constructed in the early 1930s through the 1970s featured asbestos cement pipes as their primary water and sewage transport systems. While these lines were initially thought to be durable and corrosion proof, they have since begun to degrade, releasing the asbestos fibers into…
The gel strength of drilling mud (or drilling fluid) is the shear stress in the fluid at a low shear rate after it has been static for a specific period of time. The parameter gives a measure of the inter-particle forces in the mud once drilling has stopped. The gel strength is one of the…
By: bdbolin
Tunnel boring machines (TBMs) and microtunnel boring machines (MTBMs) are used to construct underground tunnels and passages with circular cross-sections. They both use a drilling mechanism, known as a cutting head, to remove material and advance the equipment forward. However, both these…
Microtunneling and guided boring are often erroneously used interchangeably in the construction industry. While both these trenchless boring methods may seem identical, there are a number of key differences between the two that need to be considered when deciding which technology is…
By: Krystal Nanan | Civil Engineer
Trenchless technology has revolutionized the construction industry in the past few decades. With the advent of trenchless techniques like pipe jacking and…
By: Trenchlesspedia Staff
The inadvertent return of drilling fluid is common in horizontal directional drilling (HDD) projects, and though not harmful to the environment, inadvertent returns are…
Requirements for horizontal directional drilling (HDD) environmental planning and construction monitoring vary greatly across North America, but regulatory obligations…
Well-used drilling fluid will be full of unwanted solid content from the borehole after a drilling operation. The drilling fluid picks up all the soil and rock cuttings…
Horizontal Directional Drilling (HDD) is often a preferred trenchless pipe installation approach. It is completed in multiple stages including pullback, where a large…
By: Della Anggabrata | Civil Engineer
Drilling mud is a standard component of many horizontal directional drilling (HDD) construction projects. It plays a vital role in stabilizing the bore, removing the…
By: Phil Kendon | Technical Writer @ Trenchlesspedia
Horizontal directional drilling (HDD) is a commonly used trenchless installation method. This article discusses the rig components, the machine mechanism, typical…
Pipe ramming works on the principle of soil displacement and is an excellent method for pipeline installation where ground loss is expected due to shallow depth of…
Impact moling is one of the oldest trenchless methods and remains one of the most common, cheapest and most efficient. It is especially suitable for short length and…
What is Horizontal Directional Drilling?Horizontal directional drilling (HDD) has come a long way since it first came onto the trenchless scene in the 1970s. It offers a…
Sewers perform the simple function of moving water or waste streams from a source to a destination, but sewer design is more complicated than you may think. Most sewers…
Trenchless construction projects suffer from the same pressures as any construction project - those that make you fall behind schedule and increase cost. However, there…
Pneumatic Drilling Fluid
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Krystal is a civil engineer and project manager with an MSc in Construction Engineering and Management. Her experience includes the project…
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Klaus joined SAERTEX multiCom LP in 2019, first responsible for the business development in North America and from MAY 2020 as Managing Director.He…
Sky Cato serves as the Director of Operations for Internal Pipeline Solutions and manages much of the day to day operations. He has 14 years of…
