origin Hebei
packaging bundle or as client demand
MOQ: 5
We supply slick drill collars, spiral drill collars and non-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers' request. A drill collar is a device used in the drilling of oil wells for weighting the drill bit, enabling it to drill through rock. It is a bar made of solid steel, either plain carbon steel or a non-magnetic steel alloy, drilled lengthwise to permit the passage of drilling fluids. A drill collar forms the lowest element of a drill string, which encompasses all the elements of a down-hole process from the surface to the rock bit.
Drill Collars
Drill Collor Number
Outside Diameter,
in.
Inside Diameter,
in.
Length,
ft
Approximate Weight,
lb/ft
Typical Bending
Strength Ratio
NC 23-31
3-1/8
1-1/4
30
22
2.57:1
NC 26-35 (2-3/8 IF)
3-1/2
1-1/2
30
27
2.42:1
NC 31-41 (2-7/8 IF)
4-1/8
2
30 or 31
34
2.43:1
NC 35-47
4-3 /4
2
30 or 31
47
2.58:1
NC 38-50 (3-1/2 IF)
5
2-1/4
30 or 31
54
2.38:1
NC 44-60
6
2-1/4
30 or 31
83
2.49:1
NC 44-60
6
2-13 /16
30 or 31
76
2.84:1
NC 44-62
6-1/4
2-1/4
30 or 31
91
2.91:1
NC 46-62 (4 IF)
6-1/4
2-13 /16
30 or 31
84
2.63:1
NC 46-65 (4 IF)
6-1/2
2-1/4
30 or 31
100
2.76:1
NC 46-65 (4 IF)
6-1/2
2-13 /16
30 or 31
93
3.05:1
NC 46-67 (4 IF)
6-3 /4
2-1/4
30 or 31
109
3.18:1
NC 50-70 (4-1/2 IF)
7
2-1/4
30 or 31
118
2.54:1
NC 50-70 (4-1/2 IF)
7
2-13 /16
30 or 31
111
2.73:1
NC 50-72 (4-1/2 IF)
7-1/4
2-13 /16
30 or 31
120
3.12:1
NC 56-77
7-3 /4
2-13 /16
30 or 31
140
2.70:1
NC 56-80
8
2-13 /16
30 or 31
151
3.02:1
6-5/8 API Reg
8-1/4
2-13 /16
30 or 31
162
2.93:1
NC 61-90
9
2-13 /16
30 or 31
196
3.17:1
7-5/8 API Reg
9-1/2
3
30 or 31
217
2.81:1
NC 70-97
9-3 /4
3
30 or 31
230
2.57:1
NC 70-100
10
3
30 or 31
243
2.81:1
8-5/8 API Reg
11
3
30 or 31
300
2.84:1
My company information
Hejian Deris Petroleum drilling equipment Co., Ltd was established in 2000, located in Hejian City Junziguan Industrial Park, next to Natio
nal Highway 106, close to Tianjin Port, Beijing Airport, co
nvenient transportation and superior location. The company covers an area of 30 acres and a factory building of 15,000 square meters.
Specializing in the production and sales of drilling tools such as Tricone bit, PDC drill bits, Hole opener, roller cone drills, hammer and hammer bit, drill pipes, drill collars, etc. A professio
nal design, production, inspection and foreign trade sales team has been established. .
Products are sold to the United States, Canada, Russia, Kazakhstan, Iran, Qatar, Sweden, Germany, Australia, Singapore, Mexico, Colombia and other more than 30 countries. The sales volume reached 15,000 pieces of the roller cone, and the three-cone drill bit 5000 achieved.
Our company is planning to build a new factory, adding 3 production lines, CNC machine tools, drilling machines, milling machines, quality testing equipment, etc. to ensure quality and timely delivery. Make sure that every quality product meets customer needs.
Certificate
Package and shipping
Package Type : wooden case ,also be packaged according to customers requirement
Transportation : by sea , by air or land transportation . Less than 50kg shipping by courier better
Delivery : If we have stock, the delivery time will need a
bout 2~3 working days. In general, common size tricone bits and pdc bit, we have stock.
If we have no stock, such as the tci reamer and pdc hole opener, it will be 7-10 working days in total.
If you are interested in our products please send Email to us
How to complete the whole deal Step:
1. Firstly decide the design, material and color
2. Decide the size in accordance with client's requirement and our recommendation
3. We will give the best offer.
4. Client's accept the offer and we send proforma invoice.
5. Client transfers 30%-50% deposit and production begins
6. After production, we will send ready products photo
7. After client's /con
firm/iation, we will arrange shipment, and send copy shipping docu
ments like B/L,commercial invoice and packing list
8. Client transfer balance payment and we will send original docu
ments by express or Telex Release
FAQ
1. Are you a manufacturer?
Yes, we are a professio
nal driiling tools and machine parts manufacturer.
And we have a professio
nal R&D team.
2. What's products your company can provide?
We can provide drilling bucket,core barrel,auger,drilling teeth,casing series,rotary rig accessories ect.
3. How do you co
ntrol the quality of your products?
First, we use good steel GB-Q345B.Our welding stick is flux-cored wire.
Second, we have strict quality co
ntrolling system;
Third, we promise good quality and after-sales service.
4. Can you produce according to special requirement?
Yes, we can produce customized products.
5. How is your product price?
We can give you factory price,more quantity,better price!
http://www.welldrillingbit.com
Tags: Slick Drill Collar,Water Well Drill Collar,Water Well Slick Drill Collar
Hejian Deris Petroleum Drilling Equipment Co.,Ltd.
Address: Junziguan Industry Park NO.88, Hejian City,
Tel: 15128708428
Hejian Deris Petroleum Drilling Equipment Co., Ltd Both manufactuer and distributor, specialize on tricone bit, PDC bit, hole opener,Trenchless tools, drag bit and related drilling tools& equipments.
Widely used in the oil,natural gas,hydrology,address,ore drilling engineering and trenchless,product marketing the country and 30 countries and regions in the world.
We offer a dynamic range of
products and solutions, which you can trust to meet your industry demands. By
working with drilling tool designers, customer part designs, drafting,
implementation to machining fabrication, assembly and distribution, we are
ready to meet any of your industry drilling challenge.
Good reputation with public praise, adequate stock with prompt delivery, competitive price with optimized solutions. Don't be hesitated, contact with us immediately!
Each product is manufactured and inspected
in strict accordance with the industry's highest technical quality standards
and API specifications. The quality assurance system established in accordance
with the requirements of ISO 9001 ensures the best quality of the products and
the effective operation of the company.
Products are sold to the United States,
Canada, Russia, Kazakhstan, Iran, Qatar, Sweden, Germany, Australia, Singapore,
Mexico, Colombia and other more than 30 countries. The sales volume reached
15,000 pieces of the roller cone, and the three-cone drill bit 5000 achieved
first-class design, first-class manufacturing, first-class product cost
performance, and first-class after-sales to achieve win-win for the industry,
customers and the company.
Professional team at your service ,2 doctoral professional R&D
new technologies, 3 master students' drawing design, 5 undergraduate
graduations. The company inspected the finished semi-finished products, 8
production masters with more than 10 years of experience and several production
workers, 6 after-sales service personnel to provide professional technical
answers 24 hours a day, 5 website operations and foreign trade personnel to
communicate with customers in a timely and efficient manner .
Our company is planning to build a new
factory, adding 3 production lines, CNC machine tools, drilling machines,
milling machines, quality testing equipment, etc. to ensure quality and timely
delivery. Make sure that every quality product meets customer needs. Looking
forward to working with you.
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