Home > Products > New Products > API7-1 Spiral Drill Collar
API7-1 Spiral Drill Collar
- Tianjin Shanghai
- T/T
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Product Details
| Place of Origin | China | Brand Name | SINOTAI | |
| Model Number | drill collar | Type | Drill Collar | |
| Machine Type | Drilling Tool | Certification | Other, API Spec 7-1,SY/T5144 Standard | |
| Material | Other, AISI 4145H | Processing Type | Forging | |
| Use | Well Drilling |
By the requirement fo customers or the standard packing
Product Description
Specifications
1.Spiral Drill Collar2.API Spec7-1
3.AISI4145H
4.Professional Technicians,
5.Considerate Service
Spiral drill collar
Product Description
The Spiral Drill Collar is made from AISI 4145H modified alloy steel, and completely meets the requirement of API Spec 7-1 and SY/T5144 Standard. It is a kind of drill collar which adds three dextrogyrate spiral groove on the outer circle of ordinary drill collar when processing, and the purpose is to reduce the area of contact and friction with the well wall, which can effectively prevent the pressure sticking. The single weight of the spiral drill collar is round about 4% lighter than the ordinary drill collar with the same specification, and the shape and thread of the both ends are the same with the drill collar.
Thechnical specifications and parameters
OD | Depth of cut(mm) | ±25.4 Pitch(mm) | Depth of cut (mm) | |
mm | in | |||
98.4 | 3 7/8 | 4.0±0.79 | 914 |
|
101.6~111.1 | 4~4 3/8 | 4.8±0.79 | 914 | |
114.3~130.2 | 4 1/2~5 1/8 | 5.6±0.79 | 965 | |
133.4~146.1 | 5 1/4~5 3/4 | 6.4±0.79 | 1067 | |
149.2~161.9 | 5 7/8~6 3/8 | 7.1±1.59 | 1067 | |
165.1~177.8 | 6 1/2~7 | 7.9±1.59 | 1168 | |
181.0~200.0 | 7 1/8~7 7/8 | 8.7±1.59 | 1626 | 5.6±0.79 |
203.2~225.4 | 8~8 7/8 | 9.5±1.59 | 1727 | 6.4±0.79 |
228.6~250.8 | 9~9 7/8 | 10.3±2.37 | 1829 | 7.1±1.59 |
254.0~276.2 | 10~10 7/8 | 11.1±2.37 | 1930 | 7.9±1.59 |
279.4 | 11 | 11.9±2.37 | 2037 | 8.7±1.59 |
Company Profile
As a professional supplier of OCTG, drilling equipment and workover service, Sinotai Petroleum Equipment Co., Ltd. lies in the production base of petroleum equipment and China's second largest oil field --Shengi Oilfield. Our company is a high-tech enterprise in Dongying City with business scope covering the sale, trading, post-sale service and technological development of a wide variety of petroleum equipment. Besides OCTG, we provide our customers with other drilling and oil recovery equipment like fishing tools, cementing tools, workover rigs, pumping units and OCTG accessories. The striving target of our company is "Prestige first, Quality supreme; The shortest delivery time, The lowest price, The best quality". Customers' needs are our first priority and customer satisfaction is the bottom line by which we measure our success.
Contact Us
- Sinotai Petroleum Equipment Co., Ltd.
- Contact nameHerish Kuo Chat Now
- Phone86-546-8300512
- AddressNo. 107, Bldg. 45, Gaoerfu, Wanda, Dongcheng
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