ZWT Casing Advancer

Casing Advancers 
Wireline Casing Advancers
Stratex Drill System Wireline Casing advancer Drilling larger diameter hole with Rock Bit
Overburden drilling with hydraulic hammer drill Both drill strings are inserted into the ground with rotary percussion drills. The rotational direction of both drill strings is the same. Both strings are driven by one drive whilst the drilling waste is flushed out by a flushing medium in the annulus space between the outer and inner tube.
Overburden Drill Systems and Accessories
The Stratex Drill System
The Stratex Drill System (SDS) is an overburden drilling system designed for conditions where a cased hole is required. Collapsing holes tend to make overburden drilling expensive, with lost drilling equipment and down time.
In cooperation with drillers and drilling contractors, the SDS was developed to overcome these problems. The patented eccentric design and the Drop Off Ring (DOR) drill bits enable the drill string and casing to be lowered in the hole simultaneously with a conventional hammer drilling system.
The SDS eccentric designed bit rotates outward and drills a larger diameter hole than the casing, avoiding cave-ins, wash-outs, and other problems common in normal drilling operations in soft and gravel-type strata or loose rock. Since 90% of the world's overburden drilling is in loose strata, potential utilization of the SDS is enormous.
After reaching the designated depth, the SDS reamer-bit is retracted by reversing the direction of the rotation and by applying tension on the reamer-bit, which has a taper and will retract into the casing for easy removal of the entire drill-string. This leaves the casing in place for other applications or for removal at a later date. The SDS method is designed for use with flush joint threaded pipe or welded-type casing and provides a bit size for a wide variety of different casing wall thicknesses.

Advantages of SDS:  
 ? Low capital investment  
 ? High drilling performance  
 ? No rotation of the casing  
 ? Compatible with most drilling rigs  
 ? Virtually no casing stress  
 ? Casing is simultaneously lowered by the guide device and to deeper depths than other methods allow  
 ? Cost and on-site time reduced due to better penetration rates, easier bit changes, and stable hole conditions  
 ? Smaller pilot bit for faster and better penetration

Applications:
? Blast holes
? Water supply wells
? Bridge and building foundations
? Standard slant or horizontal drilling
? Mining air holes
? Environmental monitoring wells
? Grouting operations
? Seismic shot holes
? Soil sample and geotechnical applications
? Ground anomaly and tiebacks
? Storage caverns and dam

Key 

1. Standard Casing 
2. Rod Entry Guide Sub 
3. Body 
4. Hi-tensile Drive Pin 
5. Seal 
6. Advancer Casing Shoe 
7. Bit

Casing Advancer Technical Specifications 

Casing Advancer Bit and Drill Rod Threads could be any size upon request, such as 2-3/8" API. REG. 
Other Rod threads maybe incorporated at customer special request. 
Casing Advancer to suit Metric Casing (Larger sizes) are also available by request. 
If you require to order any of the items above or a bespoke design then please email or contact us.

FAQ

Q: Are you a manufacturer or trading company? 
A: We are a specialized manufacturer. 
Q: What are your main products, and used for?
A: Our products include core bit, PDC bit, reaming shell, core barrel, casing, drill rod, SPT equipment, Shelby sampler, drill rig and other drilling parts.
They are used for mineral exploration, geological drilling, geotechnical engineering and soil sampling.
Q: How about the delivery terms?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.
Q: How about discount?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer, we offer prompt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.
Q: How does your company control the quality? 
A: Quality first. In order to guarantee high quality for our products, Roschen always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004. 

For more information please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.net ; http://www.roschen.cn
http://www.roschen.com ; http://www.roschengroup.com

ROSCHEN GROUP is professional in manufacturing and supplying quality zwt casing advancer as one of the leading manufacturers and suppliers in China. We now bring you high quality zwt casing advancer for sale, competitive in its excellent performance and high precision. Please rest assured to buy.