8 Inch API 7 Silick Drill Collar BV Inspected

• Certification: ISO 9001:2000, ISO 9001:2008
• Power Source: Hydraulic
• Operation Pressure: Atmospheric Pressure
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 8 Inch
• Applicable Medium: Water
• Structure: Round
• Material: Stainless Steel
• Name: 8 Inch API 7 Silick Drill Collar BV Inspected
• Colour: Customered
• Weight: Defferent Each
• Size: 8 Inch
• Transport Package: Wooden Box
• Specification: 7-1/16", 11", 13-5/8", 20- 3/4", 21 - 1/4"
• Trademark: SEACO
• Origin: Shandong China
• HS Code: 8431431000
• Package Size: 90.00cm * 26.00cm * 23.00cm
• Package Gross Weight: 650.000kg

Product Description

8 inch API 7 Silick drill collar BV inspected

Product Description

 1, Material 4145H API 7 Standard
2,Reliable Quality with competitive price
3,Avaliable in stocks if not byg quantities
Our Drilling Collars was developed to provide a gradual transition from the drill collars to the drill collar This drill collar helps to prevent stress concentration at the top of the drill collar.It also allow drilling at higher rpms, reducing torque and differential pressure sticking. The HWDP is intended primarily for directional drilling. As it bends easily, it simplifies directional control and minimizes connection fatigue problems common to high-angle or horizontal drilling. The reduced number of pipe failures and increased drill-stem service also make HWDP appropriate for some straight-hole applications. Various combinations of HWDP, drill collars, and standard drill string can be created to meet the challenge of severe drilling conditions.

We can supply integral HWDP from 2-7/8" to 9". Also we can supply friction welded HWDP, which is assembled with AISI 1340 steel pipe and AISI 4145H or 4137H tool joints.
1. We have complete quality management system. All production is carried out stringently in accordance with quality management system. We were API and QHSE certified.
2. We are provided with complete testing equipments for magnetic powder inspection, ultrasonic inspection, rigidity inspection, ultrasonic wall thickness inspection, etc.
3. We also have complete experiment facilities undertaking experiments like stretching, impacting, bending, hardness, chemical components and crystal phase.
4. All the staffs in charge of inspection and experiment are trained and qualified. They all have the qualification certificates issued by inspection authorities. For all users, no matter for choosing our products or receiving or using our products, our company makes the following promise:
1. Quality Guaranntee:
1.1 We set up our quality management system according to GB/T19001-2000 and API standards, and keep the system functioning efficiently and constantly improve our quality.
1.2 We make the products exactly as per the criteria, specifications and technologies stipulated in the contract and agreement. We guarantee our products are 100 per cent qualified to meet users' needs.
2. Service Pledges:
We shall reply to you within 24 hours after receiving your complaints or service requirements.
We appreciate customers' support and help to our company. We shall continue focusing on product quality and pay back the widespread users with our top products and services. Welcome to visit Dongying Seaco OIlfield Equip.CO!

Type		5LZ73  7.0	5LZ89 7.0	5LZ95 7.0	7LZ95 3.5	9LZ95  7.0	5LZ120  7.0
Hole Size	Mm	95~121	114~152	118~152	118~152	118~152	149~200
	In	33/4~43/4	41/2~6	45/8~6	45/8~6	45/8~6	57/8~77/8
Thread Type	Top	23/8"REG	23/8"REG	27/8"REG	27/8"TBG	27/8"REG	31/2"REG
	Bottom	23/8"REG	23/8"REG	27/8"REG	27/8"REG	27/8"REG	31/2"REG
Nozzle pressure drop	Mpa	1.4~7	1.4~7	1.4~7	1.4~3.5	1.4~7	1.4~7
Recommend Flow	L/S	3~8	3~8	7~12	7~11	6~10	9~14
Bit rotary	R/Min	109~291	95~200	90~195	120~240	90~200	95~200
Motor pressure drop	Mpa	2.4	2.4	3.2	2.4	2.4	3.2
Working torque	N.M	460	628~838	1260~1630	723~960	750~1020	1480~1820
Lagging torque	N.M	650	1300	2200	1500	1550	2440
Output power	KW	4.7~12.5	7.3~15.3	13.6~29.5	18~24	8.3~18.5	16.4~34.5
Recommended bit weight	T	4.7~12.5	2.0	2.5	1.0	2.5	3
Max bit weight	T	2.5	3.0	5	1.5	5	5
Length (mm)	Straight	3450	3570	4450	2500	3590	5085
	Single curve	3450		4675		3590	5335
Weight (Kg)	Straight	100	98	140	89	120	390
	Single curve	102		150		120	420

Detailed Photos