Oilfield Drill Collar Spiral Drill Collar and Non Magnetic Drill Collar

• Customization: Available
• Manufacturing Process: Forging
• Material: Alloy
• Use: Well Drilling
• Machine Type: Drilling Tool, Drilling Tool
• Application: Oil and Gas Well Drilling
• Transport Package: Wooden Box
• Specification: standard
• Trademark: xinhuafa
• Origin: Cn
• HS Code: 84139100

Product Description

Standard spiral drill collar for well drilling

Product Parameters

    professional manufacturer API HDD DTH oilfield water well drilling pipe drill rod           

1. Water well drill pipe

Size: 42mm-168mm

Grade: E75,X95,G105,S135,R780

Length: R1(6.1-7.01m),R2(8.84-9.75m),R3(12.19-13.72m)

Thread type: NC26,NC31,NC38,NC40,NC46,NC50,NC56,5 1/2FH,6 5/8FH

Drill Pipe Outer Diameter		Thread Type	Steel Grade	Wall Thickness (mm)	End-Upset type	Length (mm)
inch	mm
3	76	2-3/8"  REG	R780, G105, S135	6, 8	IU/IEU	1000--5000
3-1/2	89	2 3/8'' IF  NC26	R780, G105, S135	6.5, 8	IU/IEU	1000--5000
4	102	2 7/8'' IF  NC31	R780, G105, S135	8, 9.19	IU/IEU	1000--5000
4-1/4	108	2 7/8'' IF  NC31	R780, G105, S135	8, 9.19	IU/IEU	1000--5000
4-1/2	114	2 7/8'' IF  NC31	R780, G105, S135	8, 10	IU/IEU	1500--6000
5	127	3 1/2'' IF  NC38	R780, G105, S135	8, 10, 12	IU/IEU	1500--6000

2. Geological Drill Pipe

External Diameter		Upset type	Steel Pipe Grade	Pipe Wall Thickness	Normal Weight	Pipe length	Thread model	Joint Diameter
inch	mm			mm	Kg/m	mm		mm
1.6	42	EU	DZ50	6.5	5.7	1000-9000	1:16	57
			R780
2	50	EU,IU	DZ50	6.5	7.1	1000-9000	1:16	65
			R780					68
2.375	60	EU,IU	R780	7.1	9.4	1000-9000	NC26	75
			S135					78
2.875	73	EU,IU	R780	8	12.9	1000-9000	NC31	95
			G105	9.19	14.5
								105
			S135
3.5	89	EU,IU	R780	8	16	1000-9000	NC38	121
			G105
				9.5	19			127
			S135

3.Oil Drill Pipe

Size (in)	Nominal Weight (1b/ft)	OD of Pipe Body		Wall Thickness of Pipe Body		Grade	Upset Type	Conn. Type	OD of Pin and Box		ID of Pin
		(in)	(mm)	(in)	(mm)				(in)	(mm)	(in)	(mm)
2 3/8	6.65	2 3/8	60.32	0.280	7.11	EXGS	EU	NC26 (2 3/8 IF)	3 3/8	85.70	1 3/4	44.45
2 7/8	10.40	2 7/8	73.02	0.36	9.19			NC31 (2 7/8 IF)	4 1/8	104.80	2	50.80
3 1/2	13.30	3 1/2	88.90	0.37	9.35			NC38 (3 1/2 IF)	5	127.00	2  7/16	61.91
3 1/2	15.50	3 1/2	88.90	0.45	11.40			NC38 (3 1/2 IF)	5	127.00	2 1/8	53.98
4	14.00	4	101.60	0.33	8.38			NC46 (4 IF)	6	154.20	3 1/4	82.55
4 1/2	16.60	4 1/2	114.30	0.34	8.56		IEU	NC40 (4 IF)	6 1/4	158.80	3	76.20
4 1/2	20.00	4 1/2	114.30	0.43	10.92			NC46 (4 IF)	6 1/4	158.75	2 1/2	63.50
5	19.50	5	127.00	0.36	9.19			NC50 (4 1/2 IF)	6 5/8	168.30	3 1/4	82.55
5	19.50	5	127.00	0.36	9.19			5 1/2 FH	7	177.80	3 3/4	95.25
5	25.60	5	127.00	0.50	12.70			NC50 (4 1/2 IF)	6 5/8	168.28	2 3/4	69.85
5	25.60	5	127.00	0.50	12.70			5 1/2 FH	7 1/4	184.15	3 1/4	82.55
5 1/2	21.90	5 1/2	139.70	0.36	9.17			5 1/2 FH	7 1/4	184.15	3 1/2	88.90
5 1/2	24.70	5 1/2	139.70	0.42	10.54			5 1/2 FH	7 1/4	184.15	3 1/2	88.90
6 5/8	25.20	6 5/8	168.28	0.33	8.38			6 5/8 FH	8 1/4	209.55	4 3/4	120.65
6 5/8	27.70	6 5/8	168.28	0.36	9.19			6 5/8 FH	8 1/4	209.55	4 3/4	120.65

 

4. HDD Drill Pipe(Friction welding or Forged type)

Diameter(mm)	Length(mm)	Thread type	Craft	Connection type
50	1000-3000	API 2 3/8 REG	Friction welding	Box/pin
60	1000-3000	API 2 3/8 REG	Friction welding	Box/pin
76	1500-3000	API 2 3/8 REG	Friction welding	Box/pin
89	1500-3000	NC26(2 3/8IF)	Friction welding	Box/pin
102	1500-6000	NC31(2 7/8IF)	Friction welding	Box/pin
108	1500-6000	NC31(2 7/8IF)	Friction welding	Box/pin
114	1500-6000	NC31(2 7/8IF) OR NC35	Friction welding	Box/pin
127	1500-6000	NC38(3 1/2IF)	Friction welding	Box/pin

 

Remarks: We can produce drill pipe as per your request.

5.Raw Material performances

Steel Grade	Yield Strength		Tensile Strength
	Min(Mpa)	Max(Mpa)	Min(Mpa)	Max(Mpa)
E-75	517	724	100	689
G105	724	931	793
S135	931	1138	1000
R780	520	666	780	876

Drill pipe usage notes:

1.New drill pipe should be pasted oil before connection
2.Make up and break at least 3 times before drilling
3.Hard bending and plastic coating can be processed according to clients' special requirements.

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 .

Technical Parameter

 

Size	O.D(mm)	I.D.(mm)	Code	Thread	Length(mm)	Weight(kg)
3-1/8	79.4	31.8(1-1/4)	NC23-31	NC23	9140	298
3-1/2	88.9	38.1(1-1/2)	NC26-35	NC26	9140	364
4-1/8	104.8	50.8(2)	NC31-41	NC31	9140/9450	474/490
4-3/4	120.6	50.8(2)	NC35-47	NC35	9140/9450	674/697
5	127	57.2(2-1/4)	NC38-50	NC38	9140/9450	725/749
6	152.4	57.2(2-1/4)	NC44-60	NC44	9140/9450	1125/1163
		71.4(2-13/16)	NC44-60		9140/9450	1022/1056
6-1/4	158.8	57.2(2-1/4)	NC44-62	NC44	9140/9450	1237/1279
		71.4(2-13/16)	NC46-62		9140/9450	1134/1172
6-1/2	165.1	57.2(2-1/4)	NC46-65	NC46	9140/9450	1352/1398
		71.4(2-13/16)	NC46-65	NC50	9140/9450	1249/1291
6-3/4	171.4	57.2(2-1/4)	NC46-67	NC46	9140/9450	1471/1521
7	177.8	57.2(2-1/4)	NC50-70	NC50	9140/9450	1597/1651
		71.4(2-13/16)	NC50-70		9140/9450	1494/1545
7-1/4	184.2	71.4(2-13/16)	NC50-72	NC50	9140/9450	1625/1680
7-3/4	196.8	71.4(2-13/16)	NC56-77	NC56	9140/9450	1895/1960
8	203.2	71.4(2-13/16)	NC56-80	NC56/6-5/8REG	9140/9450	2040/2109
8-1/4	209.6	71.4(2-13/16)	6-5/8REG	6-5/8REG	9140/9450	2188/2263
9	228.6	71.4(2-13/16)	NC61-90	NC61	9140/9450	2658/2748
9-1/2	241.3	76.2(2-13/16)	7-5/8REG	7-5/8REG	9140/9450	2954/3054
9-3/4	247.6	76.2(3)	NC70-97	NC70	9140/9450	3127/3234
10	254	76.2(3)	NC70-100	NC70	9140/9450	3308/3421
11	279.4	76.2(3)	8-5/8REG	8-5/8REG	9140/9450	4072/4210
Mechanical properties:<7 inch Drill Collar:Yield Strength≥758MPa,Tensile Strength≥965MPa,Four times elongation≥13%,Impact energy Ak≥54J,(Single impact work≥47J,Average≥54J)Hardness range 285HB~341HB≥7inch Drill Collar:Yield Strength≥689MPa,Tensile Strength≥931MPa,Four times elongation≥13%,Impact energy Ak≥54J,(Single impact work≥47J,Average≥54J) Hardness range 285HB~341HB

API 7-1 Integral Spiral Drill Collar for Oil Drilling

 

Product Description

Drill collars are extra-heavy integral tools used to concentrate weight onto the drill bit so as to produce sufficient force for the drill bit to break rock efficiently while drilling. They are made of AISI 4145H or 4145H modified steel and are connected between drill pipes and drill bits.

 

Our drill collar connections comply with dimensional requirements specified in API Spec 7-1. Drill collars also come with slip and elevator recesses for safe and efficient handling. Slip and elevator recesses can be used together or separately.

 

A. Slick Drill Collar

Note: Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. The Drill collar are manufactured strictly from API Spec7-1 and SY5411 standard.

B. Spiral Drill Collar

Note: Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from diffirential pressure. The drill collars are manufactired strictly according to API Spec7-1 and Standard SY5144

C. Spiral Drill Collar With Elevator Groove And Slip Groove

Note: Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar can be used as lifting sub and safety slip when trip out. The technical parameters for elevator groove and slip groove is as per API SPEC7-1. Hardbanding is optional at customers' requests.

D. Non-magnetic Drill Collar

The as cold rooled finish on both ID and OD surface with unique technical process strengthen the structure and ensures the tools with optimal resistance to stress,corrosion,cracking and the mechanical performance is greatly enganced.

 

 Standard drill collar and spiral drill collar

 

 

  Spiral drill collar with slip and elevator recess

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.