4 1/8''---9''drill collar for oilwell API

FOB Price

US$ 100 - 1,000 / Ton

10 Tons(Min. Order)

Port Qingdao Tianjin
Payment TermsT/T L/C D/P D/A Credit Card PayPal

Request Sample Customized Request Request Free Catalogs

Contact Now

Get lowest price

Product Details

Thickness	101.6, 184.2	Section Shape	Round
Outer Diameter	88.9 - 168.3 mm	Place of Origin	Shandong, China
Secondary Or Not	Non-secondary	Application	Drill Pipe
Technique	Hot Rolled	Certification	API
Surface Treatment	Other, coated	Special Pipe	API Pipe
Alloy Or Not	Is Alloy

Product Description

Product Description

Drill Collar Parameters

Nominal size	OD		ID		L	Bevel Diameter mm	Bending Strength Ratio
	OD		ID
	mm	in	mm	in
	mm	in	mm	in
NC31-41(2 7/8)IF	104.8	4 1/8	50.8	2	9150	100.4	2.43:1
NC35-47	120.7	4 3/4	50.8	2	9150	114.7	2.58:1
NC38-50(3 1/2)FH	127	5	57.2	2 1/4	9150	121	2.38:1
NC44-60	152.4	6	57.2	2 1/4	9150	144.5	2.49:1
NC44-60	152.4	6	71.4	2 13/16	9150/9450	144.5	2.84:1
NC44-62	158.8	6 1/4	57.2	2 1/4	9150/9450	149.2	2.91:1
NC46-62(4IF)	158.8	6 1/4	71.4	2 13/16	9150/9450	150	2.63:1
NC46-65(4IF)	165.1	6 1/2	57.2	2 1/4	9150/9450	154.8	2.76:1
NC46-65(4IF)	165.1	6 1/2	71.4	2 13/16	9150/9450	154.8	3.05:1
NC46-67(4IF)	171.4	6 3/4	57.2	2 1/4	9150/9450	159.5	3.18:1
NC50-67(4 1/2IF)	171.4	6 3/4	71.4	2 13/16	9150/9450	159.5	2.37:1
NC50-70(4 1/2IF)	177.8	7	57.2	2 1/4	9150/9450	164.7	2.54:1
NC50-70(4 1/2IF)	177.8	7	71.4	2 13/16	9150/9450	164.7	2.73:1
NC50-72(4 1/2IF)	184.2	7 1/4	71.4	2 13/16	9150/9450	169.5	3.12:1
NC56-77	196.8	7 3/4	71.4	2 13/16	9150/9450	185.3	2.70:1
NC56-80	203.2	8	71.4	2 13/16	9150/9450	190.1	3.02:1
6 5/8 REG	209.6	8 1/4	71.4	2 13/16	9150/9450	195.7	2.93
NC61-90	228.6	9	71.4	2 13/16	9150/9450	121.7	3.17:1

Drill Collar Flow Chart

Drill Collar Introduction

Drill collars are made with material AISI 4145H in accordance with API Spec 7-1. We supply slick drill collars and spiral drill collars; their sizes are from 3-1/8 to 11 inches.

Standard:API SPEC 7-1, API SPEC 7-2

Usage:

It is one of the most important elements of drill stem. It can provide drilling pressure to the bit and improve drill stem rigid.

Effectively control the trace element of the material which was selected with high quality and unique method. Adopt special intermediate frequency heat treatment method and advanced ultrasonic and magnetic particle inspection method and holding higher mechanical property. According to the shape and material drill collar was divided into three forms:

1.Type A(Cylindrical): To be made of ordinary alloy steel, with circular cross section inside and outside the drill collar.

2.Type B(Spiral): To be made of ordinary alloy steel, with spiral grooves on the outer surface of drill collar.

3.Type C(Nonmagnetic): To be made of low magnetic permeability alloy steel, with circular cross section inside and outside the drill collar.

Company Information

Shandong Mingzhu Petroleum Equipment Co., Ltd. is s professional petroleum equipment manufacture enterprise, which integrates R&D with production, sales and service. We are mainly engaging in production and sales of oil, gas and non-excavation drill string etc.; our products mainly include drill pipe, tubing, casing, drill collar, heavy weight drill pipe and other part. We strictly in accordance with the requirement of API Q1quality management system, and strictly control the products quality.

Our company will continue to enhance R&D production capacity with the growing good reputation in the petroleum equipment market. We shall satisfy you all over the world with quality, credit and satisfactory service by the first-class management, first-class talent, first-class equipment, first-class process and first-class quality.

Compony Activities

Company Equipment

Company Certifacate

Sales Network

Contact Us

Shandong Mingzhu Petroleum Equipment Co., Ltd.: Contact nameAimar Dang
Chat Now; Phone86-546-2881368; AddressWest Of Bohai Road, South Of Shengxing Road, Kenli County