drilling mud motor
HDD MUD MOTOR
MUD MOTOR
HDD ROCK REAMER
HOLE OPENER
DRILL PIPE
Table of classification of formation hardness and bit selection | ||||
Roller cone bit IADC code | Formations description | Rock type | Compressive strength (MPA) | ROP M/H |
111/124 | Very soft:sticky soft formation with low compressive strength. | Clay Siltstone sandstone | <25 | >20 |
116/137 | Soft:soft formation with low compressive strength and high drillability. | Clay rock Marl Lignite Sandstone | 25~50 | 10~20 |
417/527 | Medium soft: Soft to medium formation with low compressive strength and streak. | Clay rock Marl Lignite Sandstone Anhydrite
| 50~75 | 5~15 |
517/537 | Medium:medium to hard formation with high compressive strength and thin abrasive strength. | Mudstone Dark Rock Shale | 75~100 | 2~6 |
537/617 | Medium hard:hard and dense formation with high compressive strength and medium abrasive. | Dark rock Hard shale Anhydrite Sandstone Dolomite | 100~200 | 1.5~3 |
Q1. Whether accept customized according to customers' requirements ?
A: Yes, We accept customized, no matter how much is the purchase quantity
Q2. Can I expect a quality products?
A: Yes. All our activities are accredited to ISO 9001:2008 and API, both in products
and services, at the same time, mature production technology ensuring the quality
satisfy international request.
Q3. About lead time and shipping time?
A: The lead time depend on quantity of order. Usually shipped by sea, small order
or urgent order we can send you by air after received your agreement.
According the distance from china to your port, usually from China to European
about 25 days. To West of American 20 days.
Q4. What is your trade terms?
A: We offer EXW, FOB, CFR, CIF, DDU.
Q5. What is your payment terms and method?
A: Our payment terms: normally 30% deposit, balance 70% before shipment.
Our payment method, we accept T/T, L/C.
- Step 1Find your interested products by search keywords
- Step 2Contact the supplier by clicking ”Enquire” or “request meeting” button, otherwise, you also could consult our import consultant.
- Step 3After verifying your email, get response from suppliers or our trade manager will contact you as soon as possible
- Step 4Set up meeting with the Chinese supplier without language barrier