Concentric Casing Overburden Drilling System With Ring Bit
Use concentric Casing System can drill complex formation (loose, unconsolidated material such as soil, clay, silt, sand, gravel and boulders) very well. DrillMore provide the whole product range the smallest being for 114 mm (4 1/2") casing and largest size available for mm (48") casing.
Concentric Casing Components: pilot bit, casing, retainer ring, casing shoe, ring bit.
Structural Advantages of Concentric Casing System:
1. Straightness: ensures the straightness of borehole in different topographic and geological conditions.
2. Adaptability: ensures penetration efficiency in complex topographic and geological conditions, such as gravel and landfill of construction refuse.
Lower torque: the system torque is less than eccentric casing system.
3. Easy to unlock an re-rock: easy to re-rock after unlock.
4. Drilling at any angle: concentric casing system can drill under horizontal, vertical and inclined conditions.
5. Environmental: better than eccentric casing system, because of its advantages of drilling smoothly, small vibration and low noise, it is more suitable for construction in urban areas.
Working principle of Concentric Casing SystemRing bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit's shoulder engages the shoulder of the casing shoe. Hammer's percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing. On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved. If drilling continues to the desired depth in the bedrock is required, using a conventional DTH drilling bit.Following is regular model of DrillMore's Concentric Casing System:
How to place an order?
1. Casing Tube Out Diameter & Inner Diameter
2. Ring Bit Diameter
3. Hammer Shank Style
4. Pilot Bit Diameter
DrillMore Rock Tools
DrillMore is dedicated to the success of our customers by suppling drilling bits to each application. We offers our customers in the drilling industry many options, if you do not find the bit you are looking for please contact our sales team at following to find the correct bit for your application.
Head Office: XINHUAXI ROAD 999, LUSONG DISTRICT, ZHUZHOU HUNAN CHINA
: +86 199
: https://wa.me/
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Concentric casing drill systems, also known as concentric drilling systems or casing advancement systems, are specialized drilling techniques used in various applications, including environmental drilling, geotechnical drilling, water well drilling, and mineral exploration. These systems allow for the simultaneous drilling and installation of casing or pipes into the ground.
Concentric casing systems are a type of well construction used in the oil and gas industry. They involve the use of multiple concentric pipes or casings that are installed in the wellbore to provide structural support and protect the well from the surrounding environment. The outermost casing is typically made of steel and is used to protect the well from external influences such as subsurface water, soil, and rock formations. The inner casings are usually made of a more durable material such as stainless steel or high-strength plastic, and are used to protect the well from the pressure and temperature of the reservoir. Concentric casing systems can be used in a variety of well types, including horizontal, vertical, and offshore wells. They are an important tool for ensuring the stability and safety of the well during drilling and production operations.
Concentric casing drill systems have distinct differences and advantages compared to other drilling methods, such as conventional drilling or reverse circulation drilling. Here are the key differentiators and advantages of concentric casing drilling:
Simultaneous Drilling and Casing Installation: One of the primary differences and advantages of concentric casing drilling is the ability to simultaneously drill the hole and install the casing. This eliminates the need for separate casing installation operations, saving time and reducing the risk of borehole collapse. In conventional drilling methods, the hole is drilled first, and then the casing is installed separately, which can be more time-consuming and labor-intensive.
Borehole Stability and Groundwater Control: Concentric casing drill systems provide immediate borehole stability and prevent the collapse of unstable formations. The casing acts as a protective barrier, maintaining the integrity of the borehole and minimizing the risk of cave-ins. Additionally, the casing helps control groundwater flow into the borehole, which is particularly beneficial in applications where groundwater management or preventing contamination is crucial, such as environmental drilling or water well drilling.
Efficient Casing Advancement: Concentric casing drill systems utilize specialized casing advancement tools, such as casing shoes or drivers, to guide and drive the casing into the ground. This allows for efficient casing advancement as the drilling progresses, reducing the time and effort required for casing installation compared to separate casing driving methods.
Versatility and Adaptability: Concentric casing drilling can be adapted to various ground conditions and drilling applications. By selecting the appropriate casing materials, sizes, and drilling techniques, the system can be customized to meet the specific requirements of the project. This versatility makes it suitable for a wide range of applications, including environmental drilling, geotechnical drilling, water well drilling, and mineral exploration.
Time and Cost Savings: The simultaneous drilling and casing installation in concentric casing drill systems can result in significant time and cost savings. The elimination of separate casing installation operations reduces the overall drilling time, minimizes equipment mobilization and demobilization, and lowers labor costs. Additionally, the improved borehole stability and groundwater control provided by the casing can lead to more efficient drilling operations.
The optimal performance of LEANOMS Concentric Casing Systems includes:
Optimal abrasion resistant
Longer operating life
More flexible and efficient
Drill in any direction & any ground
Save drilling customers' time and money as possible as we can. That's why LEANOMS Concentric Casing Systems is outstanding.
Are you interested in learning more about Concentric Drilling System? Contact us today to secure an expert consultation!