Reaming while drilling technology is an advanced drilling technology taking advantage of reamer while drilling and general drill bit program. It can ream of hole while in the fully drilling. Reaming while drilling tools can solve salt paste layers creep and slim hole problems, and it can achieve small gap Casing program, reducing comprehensive cost of drilling, increasing the Cement ring thickness, improving the quality of well construction, making casing to pass directional well, horizontal wells and other complex wells. It ensure implementation of advanced technologies such as multilateral well, expansion tube and tubing drilling.

RWD HYDRAULIC REAMER WHILE DRILLING

RWD series hydralic reamer while drilling to Extend or retracting the knife blade through pitching pressureout  In the drill string ,it is a hydraulic control reaming while drilling tools which to  ream of hole, Can implement a single drilling,single ream and reamer while drilling on well bore,allow back reaming.

v  Using Hydraulic piston-type structure, push the knife blade extended along the inclined slide slot with pressure drop.

v  The knife blade extended when pitching started, with a knife blade forced releasing stuck structures.

v  The reaming drill bit can still drill normally or trip out in full replacement cycle after reamed.

v  The same specification reamer can be generated three kinds of expanded diameter range.

v  Optimized Knife wing structural design ensures wearability and improves the efficiency and quality of reaming.

v  Hydraulics analysis and optimization guarantees good working conditions.

CRWD CIRCULATION TYPE  REAMER WHILE DRILLING

CRWD circulation type reamer while drilling can achieve knife blade opening and closing activation many times by circulating mechanism, it is an upgraded product of conventional single activated reamer. It can be widely used in offshore drilling, ultra-deep well, large displacement well and horizontal well drilling.

TECHNICAL FEATURES

v  Ream is hydraulically controlled as needed, opening and closing times of knife blade are without restriction.

v  The reaming drill bit can still do normal drilling or full displacement cycle tripping out after reamed .

v  Shorter start time. Little affected by well inclination.

v  Installed location of reamer at drilling tools combination can be changed easily by needs. .

v  No effects on hydraulic performance of reamer drill bit Rotary steering (RSS) or measuring while drilling(MWD/LWD).

SPECIFICATIONS OF THE PRODUCTS