the pin drive roller kelly bushing provides the following advantages:
1. pulling out or feeding off string can be done while rotating;
2. because fo its integral construction , it can not fly ou…
the RCR centralizer consists of a rigid body, on which machined five spiral blades. there are three ro four modified alloy steel, fully heat treated rollers fixed on every spiral blades. the assembly …
the casing scraper is used to clean cement, mud, embedded bullets, rust, mill scale, paraffin, perforation burrs and other substances from the inside walls of casing. maintaining a clean casing I.D. i…
casing cup tester is mainly used for the pressure test on the casing string and blowout preventer stack. all of the oil (gas and water) well has been running in hole with casing and has been installin…
the quick-operating thread protector is a manually-operated device for protecting external pin-end threads on casing. it is simple, tough and secure, the fast and easy operation of quick-operating thr…
AJ type safety joint is a specialized joint consisting of two parts. the specialized joint takes protective effect for drilling stem in drilling, repairing and test oil (gas) engineering, etc. it is u…
tool joints of our company are made of modified alloy steel, then fully heat treated. so the mechanical properties in accordance with API standard ,such as hardness, strength and impact strength are a…
drill-stem sub plays conversion and connnection of drill stem component a role in pertroleum, natural gas and geology drilling work.
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non-rotary stabilizers is composed of two parts, one is mandrel, another is sleeve. between the sleeve and manderl ca be relative rotation. to improve useful time, the innera wall of sleeve and the su…
the stabilizer with back-reaming is selecting the appropriate location and through special processing method to array few teeth as a cutting edge. in this way, this stabilizer can be played cutting w…
integral mandrel sleeve stabilizers are made in two parts: one mandrel and one sleeve. the stabilizer is assembled by screwing the sleeve on the body and tightening these on the shoulder. the sleeve h…
the stabilizers have three types according to their body/mandrel:
1. integral stabilizer
2. integral mandrel sleeve stabilizers
3. two piece mandrel sleeve stabilizer
the body (or mandrel…
the fixed diameter hole opener is made of tough heat treated alloy steel for maximum strength. cutter arms, equippe with removable cutter, are hardfaced and welded on body. cuttersn are avaibalbe in t…
arrow type check valve used to be installed between drill stem and bit to prevent drilling fluid backflow from the bottom. the body is a crossover sub in which the other parts are installed. when back…
this float valve is normally installed in a standard bore-back of the bit sub, to provide fluid flow control at the bottom of the drill stem. it also prevents backflow of cuttings from plugging the dr…
ECROBOT CO., Ltd, Business Registration Number : 220-88-71747, CEO J.W.Park, TEL : +82-2-552-7676, E-mail : E-mail : Contact us Address : (Hwanghwa B/D 11F, Yeoksam-dong)320, Gangnam-daero, Gangnam-gu, Seoul, South Korea