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Product Categories
Tricone Bit ( 148 )
Hole Opener ( 42 )
Roller Cone bit ( 23 )
PDC Bit ( 27 )
Core Barrel ( 4 )
Drag Bit ( 15 )
DTH Drilling Tools ( 15 )
Core Bit ( 3 )
Drill Pipe ( 5 )
Drill Collar ( 6 )
Drill Stabilizer ( 1 )
Single Cone Bit ( 1 )
Drilling Tools ( 6 )
(Total 6 Products for Drill Hole Collar)
API SPEC 7-1 Spiral oilfield Drill collar
Spiral drill collar is the main products in Hejian Deris, such drill collar can provent drilling process in the differential pressure block, the spiral groove will allow the mud around the drill collar of freedom flow to differentialpressure sticking. With the drilling shaft to reduce the contact area. Which can...
API Spiral Drill Collars Well Drilling Tools
It reduces the contract area with the wellface and the steering resistance,which can prevent differential pressure sticking. The drill collar is according to SY/T5144-1997 and API 7-1 " Specification for Rotary Drill Stem Elements" standard, the material uses AISI 4145H alloy structural steel to carry on the deep hole...
API7-1 Oil Well Drilling Tools Spiral Drill Collar
Spiral drill collars during drilling to prevent the drilling pressure differential block, spiral grooves may allow slurry flows freely around the drill collar to prevent blocking the formation of the equilibrium pressure, so as to effectively prevent the phenomenon of differential sticking. Can reduce the area of...
4 3/4inch Water Well Slick Drill Collar
We supply slick drill collars, spiral drill collars and non-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers' request. A drill collar is a device used in the drilling of oil wells for weighting the drill bit,...
Nc38 Thread Slick Drilling Collar in Stock
Spiral Drill Collar is a kind of drill collar which adds three dextrogy rate spiral groove on the outer circle of ordinary drill collar when processing, and the purpose is to reduce the area of contact and friction with the well wall, which can effectively prevent the pressure sticking. These devices are typically 31...
API 7-1 Oilfield Non-magnetic Drill Collar
Hejian Deris Petroleum Drilling Equipment Co., Ltd supplies non-magnetic drill collar is made of a low-carbon high-chromium-manganese alloy steel. It is refined after a strict chemical composition and refined by forging to achieve its mechanical properties. It has good low magnetic permeability and high strength....
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.