Audited Supplier
Our 16mm composite body paired with our proprietary Axe and Benz Tooth hybrid design strikes the ideal balance of cutting ability, penetration rate, and durability.
The axe teeth provide aggressive initiation while the benz teeth deliver steady shear cutting.
Together, they enable Faster ROP without compromising impact resistance or longevity.
We carefully tailored this combination to Maximize Drilling Efficiency through varied formations.
By Widening the blade, we increase bit torque for faster drilling.
Our Mixed ridge and trigonal tooth designs deliver both aggressive initiation and steady shear cutting.
Durable composite blades reduce friction and wear when encountering abrasive formations. This enhances overall bit Durability and Stability during prolonged use.
Through thoughtful design choices like these, we create drill bits that deliver unmatched performance and reliability.
Our Short Parabola Design optimizes the bit surface area to balance wear reduction and drilling performance.
This geometry Improves Service Life and drilling ability in deviated and directional wellbores.
The shortened parabolic profile Reduces Frictional contact area for less wear. Balanced Contact forces maintain weight on bit for continued cutting efficiency and stability during lateral drilling.
This careful design demonstrates our commitment to creating drill bits tailored for your specific drilling objectives.
Our drill bits feature an innovative 5-Hole Waterway design that enhances chip removal and reduces clogging.
The optimized layout improves drilling hydraulics for Faster Cuttings Evacuation.
This prevents packed cuttings from impeding fluid flow through the bit. The result is Reduced torque, Improved ROP, and decreased risk of stuck pipe events.
Thoughtful designs like our 5-hole waterway demonstrate our commitment to creating drill bits tailored for your specific drilling objectives.
| Basical Specifications | |
| Size: | 165.1mm |
| Model Number: | S1655FG |
| Thread Connection: | 3 1/2'' API REG |
Ruishi's Growth Journey
One day in 1990
RuiShi Bits were born in the Huabei oilfield.
In 1998
Our subsidiary QianLong Tool(QL) was established.
Boasting formidable technical capabilities, QL covers extensive business scopes. Working closely with the parent company(Ruishi), QL has achieved outstanding performance.
From 2009
RuiShi became a vertified First-Class supplier for CNPC and CNOOC day by day.
In 2018
RuiShi increased its registered capital to 200 million RMB. We focus more intently on R&D, design, manufacturing of drill bits. RuiShi quality improves daily, reputation rising bit by bit.
In 2021, our new subsidiary Screw Equipment joined the group.
Ruishi providing comprehensive solutions for oil drilling. With one-stop services, Screw Equipment enhances RuiShi's capacity as a holistic brand.
Today, RuiShi Bits are bestsellers in domestic market and abroad, with a full range of models and sizes from 2'' to 26''.
In the future, RuiShi will build on its heritage and keep serving the petroleum industry in both domestic and international markets. Through continuous innovation, we will seek new development and write a splendid chapter!
Wooden Box
Iron Box
At Ruishi, we promote comprehensive quality management with a focus on customer needs.
To ensure consistent quality and bit performance, we adhere strictly to:
· API SPEC7-1 and ISO9001 quality standards during production;
· ISO 14001 environmental management systems;
· OHSAS 18001 occupational health and safety protocols.
After-sale Warranty
(1) Free replacement for quality-related problems.
(2) Timely after-sale support is always available.
Q1: Are you a manufacturer or a trade company?
A1: We are a manufacturer, and we can help you find different kinds of products in the Chinese market to match your needs.
Q2. Can I have a sample order?
A2. Yes, we welcome sample order to test. Mixed samples are acceptable.
Q3. What about the lead time?
A3. Samples within 3 days, big order within 30 days.
Q4. Do you have any MOQ limit for LED light?
A4. One piece for sample testing is available.
Q5. How do you ship the goods and how long does it take to arrive?
A5. We usually send by DHL, UPS, FedEx or TNT. It takes around 3-5 days. Sea shipping also optional.
Q6. What about Payment?
A6. TT, Paypal, L/C, Western Union; 30% deposit before mass production, balance against copy of B/L.
Q7. How to deal with the faulty?
A7. During the warranty period, we will repair or replace defected products.
Q8. Can I visit your factory online?
A8. Yes, we can show our workshop, warehouse, offices online by WeChat, Whatsapp or Skype.
