Variable Diameter stabilizer is one of main drill tool assembly in hole guiding. During drilling in deviating and horizontal well, in view of workmanship, stabilizer OD is required to be equal or 1~2mm less than drill bit so that too small clearance between borehole wall and stabilizer usually causes stabilizer to be easily stuck during tripping out of hole.
However, variable diameter stabilizer solves the problem which common stabilizer can't solve. During drilling in directional well, by use of differential pressure at nozzle produced by circulation of fluid among inside and outside of drilling string, stabilizer stretch out supporting head to reach full hole so that stabilizer equipped with different drill tools to increase or angle drop or stabilizer hole inclination. Meanwhile, when stop pump circulation, support head draw back so that stabilizer OD becomes small to improve tripping out smoothly.
Diameter changeable stabilizers
Working O.D. inch(mm) |
Fishing O.D. inch(mm) |
Connection. API |
I.D. inch(mm) |
OAL inch(mm) |
Fising Neck Length inch(mm) |
Blade Length inch(mm) |
Blade Wide inch(mm) |
215~203 |
165.1 |
NC50 |
55 |
1350 |
290 |
660 |
145 |
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Q:How can I place order?
A: You can contact us by email or social media like WhatsApp on the order detail or place order on line.
Q:How about the payment?
A: For new clients, advance payment(30%-100% of total amount) is required, the balance need to be paid before the delivery after your inspection.
Q:How can I pay you?
A: By T/T (Telegraphic Transfer) or L/C (Letter of Credit). After you receive the PI, you can make the payment through your bank as per the terms mentioned in PI.
Q: What's the order procedure?
A: First we discuss order details, production details by email ,TM or other social media; then we issue you an PI for your confirmation. You will be requested to make full payment or deposit before we go into production.After we get the deposit, we start to process the order. Depending on the products you order, we usually a couple of days or even moths to complete production 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 shall arrange the shipment for you.
Q: How do you deal with defective products received by the clients?
A: If there are some defective items, we usually credit to our customer or replace them in next shipment.