Return to Drilling Methods List. ODEX Percussion Down-The-Hole Hammer (Odex, Stratex, and Tubex are trade names) ODEX is an adaptation of the air-operated down-the-hole hammer. It uses a swing-out eccentric bit to ream the bottom of the casing. The percussion bit is a two-piece bit consisting of a concentric pilot bit behind which is an ...

The SUPERBIT Casing System is born as a range of drill bits that allow the insertion of casings during the drilling. These systems allow drillings on loose grounds ensuring excellent performance. At the beginning of the drilling operations, expandable wings are closed to allow the system to go through the casing and lean against the shoe.

Description. For small-hole sizes, rock drilling tools manufacturer ProDrill produces the ODEX Eccentric Overburden Drilling System, rock drill bits starting with the ODEX90 to suit 114mm O.D. casings. This two-piece system comprises the shank bit holder and the eccentric pilot bit that is secured in the bit holder by a double interlocking pin.

Disadvantages of igneous rocks Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Disadvantages of igneous rocks, quarry, aggregate, and different kinds of minerals. ... application of odex drilling method in a variably ...

Becker Drilling & Penetration Testing. Becker drilling rigs are often used for exploration and penetration testing in deposits with coarser particles (e.g., gravels, cobbles) where standard drilling techniques and SPT testing may not be feasible. This Becker drilling rig has its …

Drilling and blasting is an important section during mining production. Let's talk about the three methods of rock drilling — Rotary drilling, DTH (down the hole) drilling and Top hammer drilling.

ODEX. The ODEX method is the precursor to STRATEX. Both systems operate similarly but differ by the use of conventional direct airflow and the use of thinner walled, lower tensile casing, which usually requires welding and is not designed to be retrieved. Production wells are often sized according to …

ODEX (short for "Overburden Drilling Excentric") is a lso called Stratex, T ubex or O DS. It is an adaptation of the air-circulation DTH hammer. It is with a swing-out eccentric bit to ream the bottom of the casing. And the percussion bit consists of two parts fixed tips: a concentric pilot bit, and behind it is an eccentric reamer bit that ...

850 Odex Eccentrics Drilling System supplied by UAE Odex Eccentrics Drilling System Manufacturers & Companies TITAN GER 400 Gold Metal Detector 3 Systems – Underground Gold And Treasur TITAN 400 SMART device, with a completely new design, besides the device is the first of its kind in the world.

Advantages of Odex Drilling / Simultaneous Casing Drilling • This method can be used in otherwise difficult situations such as drilling through back fill and boulders. • Steel casing is simultaneously placed down the hole as the drill bit advances thus saving time and holding back collapsing formation.

Products / Ground Engineering / Odex systems : Odex systems : Odex overburden drilling system has become the standard for casing in water wells, geothermal wells and for shallow micropiling work.Odex is ideal for short holes in consolidated overburden. Thanks to the ingenious reaming wing the bit is retrievable can be used at the next hole.

On Track Drilling operates drilling rigs and support equipment that are designed to access remote locations in order to complete geotechnical investigations for Horizontal Directional Drill (HDD) crossings. We use low ground-pressure auger, ODEX, and coring rigs to conduct our operations.

The Advantages of ODEX Drilling. – The ODEX drilling can perform any type of overburden drilling without any deviation. Its bit design keeps the casing straight resulting in straight holes. – The ODEX can perform both concentric as well as hammer penetration. You can drill deeper designs with concentric design in comparison to other design ...

We use ODEX drilling below groundwater table. The groundwater level is around 5m below ground. Alluvial sand is at 40-60m below ground. Pile length is designed to be around 70m below ground. RE: Prebored socket H-pile - Sand goes into casing PEinc (Geotechnical) 27 Oct 21 17:12.

Top hammer drilling principle. When the piston hits the shank, kinetic energy in the piston creates a compressive wave in the string of drilling tools, that will cause the bit to penetrate the rock; Piston velocity at impact ≈ 10m/s but the compressive wave in the drill steel travels at a velocity of 5180 m/s (velocity of sound in steel) ...

Odex piles are formed by drilling and hammering a steel casing into the ground. The drilling is done with a down the hole hammer which has the capacity to bore through obstructions and into solid rock,, this borehole can be continued into the rock as an open hole. Concrete is then pumped into the hole and a steel reinforcing cage can be installed.

Sonic drilling is a soil penetration technique that strongly reduces friction on the drill string and drill bit due to liquefaction, inertia effects and a temporary reduction of porosity of the soil. The combination makes penetrating a large range of soils easy for our Sonic rigs and tooling. Like to discuss how the sonic can accalerate your project?

The types are: 1. Percussive Drilling 2. Rotary Drilling. Method # 1. Percussive Drilling: In this method which is the oldest one of drilling, the hole is drilled by striking a number at short in intervals on the rock by a chisel-type tool and between the blows the tool is rotated slightly.

Drilling Parameters and Their Application in Mining and Exploration de Groulard, P.[1] 1. LIM SA, Villeurbanne, France Within the context of the development of new instrumentation technol-ogies in destructive drilling (Measurement While Drilling, MWD) stem- ...

Difference between Top Hammer vs Down the Hole Drilling. Powered by pressurized air, down-the-hole drilling is a more efficient approach. The rate of this method is much slower. As the depth increases, the performance degrades. The top hammer drilling relies on hydraulic energy, so its performance remains consistent regardless of the depth.

disadvantages, as long as the correct equipment is avaliable. 5 DETAILED DESCRIPTION OF THE INSTALLATION METHOD AT E16 MØLLA At Mølla the following steps was executed to install the sensors. 1. A cased borehole was drilled down to 50 cm below the level of the deepest sensor using ODEX drilling system. The inner diameter of the casing was

Model ODEX/TUBEX - Overburden Drilling. When drilling with ODEX/TUBEX the reamer wings are out and thus drill a hole that is larger than the casing outer diameter. When desired drilling depth is aquired, the reamer swings in (retracting position) when the drilling rod is rotated backwards. Thus the drill bit can be retracted through the ...

RE: ODEX System and soil disturbance. dgillette (Geotechnical) 30 May 07 10:28. If you are using air below the water table, the gentlest of drilling techniques can cause loosening and heave of the bottom of the hole. As soon as the air pressure is let off, there is atmospheric pressure inside and hydrostatic outside, which can cause a very ...

Sonic Drilling Over Conventional Drilling Sonic drilling technology is not new but it is certainly still within its adoption phase. This means that drilling contractors often have to play a role in teaching their mining, water well, environmental and geotechnical clients about the technology and its advantages for their projects.

CFA piles are constructed by drilling a continuous flight hollow stem auger into the ground to a specified depth. The fact that the hollow stem auger provides support to the excavated shaft at all times during the drilling process precludes the need for temporary casings or drilling fluids.

The relative success of this seldom used method invites a discussion of the principals of the under-reamer drilling method (ODEX) and the physical limitations of the system. A practical knowledge of the advantages and disadvantages of each drilling method is necessary when designing an investigation addressing problems of soil and water ...

ODEX is an excellent option when unconsolidated formations are too dense or cobbly for Auger Drilling. ODEX is a down-hole air hammer system that is designed to advance casing during drilling. Once a desired depth is reached they eccentric bit can be retrieved leaving the casing in …

For small-hole sizes, rock drilling tools manufacturer ProDrill produces the ODEX Eccentric Overburden Drilling System, rock drill bits starting with the ODEX90 to suit 114mm O.D. casings.This two-piece system comprises the shank bit holder and the eccentric pilot bit that is secured in the bit holder by a double interlocking pin.

Sonic Drilling. Sonic is an advanced form of drilling which employs the use of high-frequency, resonant energy generated inside the Sonic head to advance a core barrel or casing into subsurface formations. During drilling, the resonant energy is transferred down the drill string to the bit face at various Sonic frequencies.

Advantages Disadvantages 1. Unlike any other drilling method, percussion can remove boulders and break harder formations, effectively and quickly through most types of earth. 2. Percussion drilling can in principle deal with most ground conditions. Can drill hundreds of feet (one well hand-drilled in China in 1923 was over 4000 feet deep). 3.

Drilling Eccentric (ODEX) System, this method involves the use of rotary percussive drilling combined with an eccentric under-reaming bit. The eccentric bit undercuts the drill casing, which then can be pushed into the oversised drill hole with much less rotational energy or thrust than is required with the concentric method just described.