Lifting Sub for Drill Collar, Drill Pipe, Hwdp etc. API Spec. 7-1

• Customization: Available
• Manufacturing Process: Forging
• Material: Alloy, 4145h, Alloy
• Use: Well Drilling
• Machine Type: ["Drilling Tool, Drilling Tool","Drilling Tool, Drilling Tool"]
• Application: ["Oil and Gas Well Drilling","Oil and Gas Well Drilling"]
• Applicable Industries: Energy & Mining
• Processing Type: Forging
• Product Name: Drill Collar Spiral Drill Collar and Non Magnetic
• Type: Drill Collar
• Color: Blue
• Transport Package: Wooden Box
• Specification: standard
• Trademark: xinhuafa
• Origin: Cn
• HS Code: 84139100

Product Description

Standard spiral drill collar for well drilling

Product Parameters

 

Drill collar Number and Connection (mm)	Outside Diameter (mm)	Bore Diameter (mm)	Length (mm)	Shoulder guide angle diameter mm
NC23-31	79.4	31.8	9150	76.2
NC26-35	88.9	38.1			82.9
NC31-41	104.8	50.8			100.4
NC35-47	120.7	50.8			114.7
NC38-50	127	57.2			121
NC44-60	152.4	57.2	9150 or 9450	144.5
NC44-60	152.4	71.4			144.5
NC46-62	158.8	57.2			149.2
NC46-62	158.8	71.4			150
NC46-65	165.1	57.2			154.8
NC46-65	165.1	71.4			154.8
NC46-67	171.4	57.2			159.5
NC50-67	171.4	71.4			159.5
NC50-70	177.8	57.2			164.7
NC50-70	177.8	71.4			164.7
NC50-72	184.2	71.4			169.5
NC56-77	196.8	71.4			185.3
NC56-80	203	71.4			190.1
6-5/8REG	209.6	71.4			195.7
NC61-90	228.6	71.4			212.7
7-5/8REG	241.3	76.2			223.8
NC70-97	247.6	76.2			232.6
NC70-100	254	76.2			237.3
8-5/8REG	279.4	76.2			266.7

 

Product Description

 

Product Application

 

There are different kinds of drill collars,including round drill collar,spiral drill collar,non-magnetic drill collar,square drill collar and so on.Ordinary drill collar is the circular cross section, the center has a water hole,the wall thickness is larger,the nozzle is smaller, the weight of per unit length is greater than the size of drill pipe almost 4- 5 times .The majority of drill collar is thread processing directly on the pipe body , but some of them also use the replaced joint.

Features

(1)Eccentric-weight drill collar is an effective anti-deviation drilling tool,with high drill pressure used in oblique areas,rectifying oblique as well.

(2)When drilling directional wells eccentric-weight drill collar is an effective tool to reduce oblique or straighten the well hole using high drilling pressure.

(3)Eccentric-weight drill collar has the advantages of simple structure,convenient use,connected directly to common drill collar without centralizers,greatly convenient for sinking in,fishing and milling operations.

(4)Eccentric-weight drill collar runs downhole safely,danger of leakage or bit freezing hard to appear.

(5)Pay much attention to avoid mud balling and prevent effect of anti-deviation .

 

 

 

 

Detailed Photos

 

Company Profile

Hebei Xinhuafa Petroleum Machinery Co, Ltd. is a specialized manufacturer that

focus on the manufacturing of oil drilling equipment and spare parts since 2006. Our main products are mud pump and accessories which can be interchangeable with many mud pump of oversea and domestic brand,including BOMCO F series, HHF series, NOV P series,LANSHI 3NB series, Oingzhou 3NB series and other mud pump. The products we supply are the cylinder liner, piston,valve(full open type and web type), piston rod, extension rod, cross head, bearing,v belt ,safety valve,manifold,sealing and other mud pump accessories.

The products all meet the requirements of IS09001, and API-7K (American Petroleum Association) standards.Since 2023,we expand our workshop which cover 20000 sqm,which can improve our production capacity and products stocks.

During the almost 20 years development,we have many advantages as below:
1.The company is located in Hengshui City which 2 hours by high speed train from Being.Very convenient if customers come to visit .
2.The factory is equipped with advanced machine, many technician with rich experience,strict quality control procedure make sure to supply best quality product.
3. Production capacity is 3000 units /month,and inventory enough can timely meet customer needs.
4. Perfect after-sales service and immediate response service at 24/7.

Principle: focus on service, and strive to achieve win-win for customers, employees and company.
Orientation: A professional One-stop supplier of oil and gas drilling equipment.  
Mission: To provide high quality products and services for the oil and energy industry.  
Values: Take responsibility and work hard,with seizing the day
Vision: To serve more than 80% of oil and gas drilling engineering customers within 5 years.

 

Packaging & Shipping

FAQ

 

1. Do you have OEM service? Do you supply the parts? 

Yes, we do, as long as you provide us your drawing and detailed requirements.
 

2. How can we easily find out the most fit centrifuges? 

We have experienced engineer team to help you make the model selection, as long as you proide us the detailed processing material characteristics. 

 

3. Will you dispatch technicians for installation and commissioning? 

Yes, we can, we do lots of service, please refer to our after sales part. 

 

4. What is your advantage compared with your competitors? 

Quality and experience. We are the top centrifuge supplier in China, our designs and structures are similar to world leader , Westfaliar, Flottweg etc. 

 

5. How do you protect the quality? 

My factory is a state owned enterprise with more than 100 years experience, strict operation policy is performed, advanced processing machines guarantee the precision of all components, workers with operation license, parts get multiprocessing, transmission&electrical parts are of international famous brand. Series of test and inspection are done in the whole producing stage. 

 

6. Can we visit your end user or contact them? 

Yes,users are in domestic and abroad, we can provide you the name list. You can go there or contact to get more info.