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(Total 3 Products for Drilling Collar)
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...
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...
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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.