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[China]
Trade Verify
Address: No.10 West of North Second Rig, Weiyang District, Xi’an City, China
Contact name:Sunny Lee
Xi'an TianRui Petroleum Machinery Equipment Co., Ltd. |
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Verified Suppliers
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API 7-1 Oilfield Drilling Tool Saver Sub OD 187mm for Top Drive
Product Introduction
Saver sub is short length of drill collar that has male threads on
one end and female on the other. It is screwed onto the bottom of
the kelly or topdrive and onto the rest of the drillstring. When
the hole must be deepened, and pipe added to the drillstring, the
threads are unscrewed between the saver sub and the rest of the
drillstring, as opposed to between the kelly or topdrive and the
saver sub. This means that the connection between the kelly or
topdrive and the saver sub rarely is used, and suffers minimal wear
and tear, whereas the lower connection is used in almost all cases
and suffers the most wear and tear. The saver sub is expendable and
does not represent a major investment. However, the kelly or
topdrive component threads are spared by use of a saver sub, and
those components represent a significant capital cost and
considerable downtime when replaced.
Company Service
To supplement our range of Top Drive and Kelly Saver Subs, we
introduced a range of Top Drive Saver Subs with Splined Design to
suit the latest Top Drives on the market.
These subs and joints are all made from high quality grade, heat-treated alloy steel for maximum strength and durability, and threaded to customer specifications and API Spec 7-1 requirements.
Technical Information of Top Drive Save Sub
Item | O.D. | I.D. | OAL | Connection |
(mm/inch) | (mm/inch) | (mm/inch) | API | |
1 | 187(7-23/64) | 44.5(1-3/4) | 432(17) | 6 5/8REG PIN×NC31 PIN |
2 | 187(7-23/64) | 44.5(1-3/4) | 432(17) | 6 5/8REG PIN LH×NC31 PIN LH |
3 | 187(7-23/64) | 57.2(2-1/4) | 445(17-1/2) | 6 5/8REG PIN×NC38 PIN |
4 | 187(7-23/64) | 57.2(2-1/4) | 445(17-1/2) | 6 5/8REG PIN LH×NC38 PIN LH |
5 | 187(7-23/64) | 71.4(2-13/16) | 458(18) | 6 5/8REG PIN×NC50 PIN |
6 | 197(7-3/4) | 57.2(2-1/4) | 458(18) | 6 5/8REG PIN×NC38 PIN |
7 | 197(7-3/4) | 71.4(2-13/16) | 470(18-1/2) | 6 5/8REG PIN×NC50 PIN |
8 | 197(7-3/4) | 71.4(2-13/16) | 458(18) | 6 5/8REG PIN LH×6 5/8REG PIN LH |
Please specify the size if you have any special demand. | ||||
What's the order procedure?
First we discuss order details, production details by email or TM.
Then we issue you an PI for your confirmation. You will be
requested to do pr -epaid full payment or deposit before we go into
production. After we get the deposit, we start to process the
order. We usually need 15-25days if we don't have the items in
stock. Before production has been finished, we will contact you for
shipment details, and the balance payment. After payment has been
settled, we start to prepare the shipment for you.
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international
brands.
6. Our products have been exported to Argentina, Egypt, US,
Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India,
Indonesia, Vietnam, Malaysia and many other countries.
