| Use: | Well Drilling |
|---|---|
| Material: | Carbon Steel |
| Certification: | API |
| Type: | Drill Collar |
| Brand Name: | Dongying Lake Petroleum Technology Co., Ltd. |
| Processing Type: | Forging |
| Machine Type: | Drilling Tool |
| Model Number: | All Models |
| Place of Origin: | China (Mainland) |
| Color: | Required |
| Condition: | New |
| After-sales service provide: | No overseas service provided |
| Warranty: | one year |
Quick Details
Specifications
1. Product Description:
Drill collars are integral heavy-wall joints that are manufactured from a solid bar of modified alloy steel. the solid bars are quenched and tempered to obtain the mechanical properties, then trepanned drifted and threaded. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface pipe.
Drill collars are integral heavy-wall joints that are manufactured from a solid bar of modified alloy steel. the solid bars are quenched and tempered to obtain the mechanical properties, then trepanned drifted and threaded. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface pipe.
Lake Petroleum could supply slick type drill collar, spiral drill collar and non-magnetic drill collar (NMDC).
2. Main Technical Parameters:
Connections |
O.D. (mm) |
I.D. (mm) |
Length (mm) |
NC 23~31 |
79.4 |
31.8 |
9150 |
NC 26~35 |
88.9 |
38.1 |
9150 |
NC 31~41 |
104.8 |
50.8 |
9150 or 9450 |
NC 35~47 |
120.7 |
50.8 |
9150 or 9450 |
NC 38~50 |
127.0 |
57.2 |
9150 or 9450 |
NC 44~60 |
152.4 |
57.2 |
9150 or 9450 |
NC 44~60 |
152.4 |
57.2 |
9150 or 9450 |
NC 44~62 |
158.8 |
57.2 |
9150 or 9450 |
NC 44~62 |
158.8 |
71.4 |
9150 or 9450 |
NC 46~65 |
165.1 |
57.2 |
9150 or 9450 |
NC 46~65 |
165.1 |
71.4 |
9150 or 9450 |
NC 46~67 |
171.4 |
57.2 |
9150 or 9450 |
NC 50~67 |
171.4 |
71.4 |
9150 or 9450 |
NC 50~70 |
177.8 |
57.2 |
9150 or 9450 |
NC 50~70 |
177.8 |
71.4 |
9150 or 9450 |
NC 50~72 |
184.2 |
71.4 |
9150 or 9450 |
NC 56~77 |
196.8 |
71.4 |
9150 or 9450 |
NC 56~80 |
203.2 |
71.4 |
9150 or 9450 |
6 5/8 REG |
209.6 |
71.4 |
9150 or 9450 |
NC 61~90 |
228.6 |
71.4 |
9150 or 9450 |
7 5/8 REG |
241.3 |
76.2 |
9150 or 9450 |
NC 70~97 |
274.6 |
76.2 |
9150 or 9450 |
NC 70~100 |
254.0 |
76.2 |
9150 or 9450 |
8 5/8 REG |
279.4 |
76.2 |
9150 or 9450 |
3. Features:
(1). Hardness range of 285~341 BHN and a charpy impact value of 40 ft / lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature.
(1). Hardness range of 285~341 BHN and a charpy impact value of 40 ft / lbs are guaranteed for evenly distributed 16 points in any cross sections at room temperature.
(2). Connections are phosphate coated father machining to protect the thread from corrosive elements and to prevent galling upon initial make-up. Thread roots are cold rolled on API and H0-90 connections.
(3). Pressed steel thread protectors are supplied to all drill collar that are equipped with standard connections.
(4). Manufactured strictly according to API standard.
(5). Widely used in oil, gas, HDD and geothermal field.
4. FAQ:
Why you need to choose Lake Petro?
as a professional oil and gas service company, Lake Petro has many good experience in selling and serves for the oilfield industries for years. Quality is the culture of the company, we provide API and BV certified products for customer.
Can you make us the best quality products as well as a good price?
Yes, we can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us yourmoney will be safe.
What is special compare with other companies?
First, we provide the quality products, with BV and API certified; at the same time, we provide our customer with the best service after sale, any time any where.
