Heavy-weight drill pipe is an intermediate weight per unit length drill string element. This type of drill pipe has a heavy wall pipe body with attached extra length tool joints (see Figure 4-2). Heavy-weight d
Tool Joint ID , in. Center Upset Diameter, in. Central upset dia (in) Min. drift dia. size (in) 3-1/2 2-1/4 NC38 4-3/4 (4-7/8, 5) 2-1/4 4 4 2 2-1/16 2-1/16 1 13/16 4 2-1/2 NC40 5-1/4 2-1/2
4.3 Pipe failure Drill string pipes are made up of two separate components: the pipe’s body and its connector. However, for drill collars, the connection is weaker than the body’s strength. A new drill pipe’s connection (tool joint) is stronger than its body. The drill pipe fails at...
DimensionsofDrillPipeithWeld-OnToolJointsInternalUpsetUExternalUpsetUInternal-ExternalUpsetEUreatmentofThreadSurfaceshetooljointthreadsarephosphatedandinconnectionwiththethreaddope,accordingtoPIBUL7A1,thisprovidesanexcellentsurfacetreatmenttoavoidgallingduringmake-upandreak-out.sanalternativecopperplatedthreadscanbesupplie...
The remote control station has a zero-pressure starting function; the oil tank has a heating function; the protection room is equipped with an explosion-proof air conditioner; the gas pipe bundle is provided with a heating function; and comprises a main driller and an auxiliary...
The relative dimensions of the box and pin ends are precisely controlled so that when the tool joint is made up, a repeatable reference plane is established for transmitting power and tuning downhole sensors, transducers, and means for sending and receiving data along the drill string. When the...
Flange joint can be executed totally without welding -> saves time, increase quality, no X-ray inspection, no stock fitting = much cost savings No forming tool change, all pipe Ø sizes can be formed with same tool For excellent quality, Individual pipe clamps needs to be changed for each...
Last Login Date: May 13, 2025 Business Type: Trading Company Main Products: Drill Bit, Water Well Drilling Rig, Crawler Water Well Drill Rig, Drilling Pipe, DTH Drill Rig, Drill Rig, Anchor Drill Bit, Drill Pipe More Product Description ...
Business Type: Trading Company Main Products: Drill Bit, Water Well Drilling Rig, Crawler Water Well Drill Rig, Drilling Pipe, DTH Drill Rig, Drill Rig, Anchor Drill Bit, Drill Pipe More Find Similar Products Skid Crawler Truck Mounted Surface Underground ...
Moreover, such enhancement of the pipe life allows no overdimension of joint parts to be stipulated with a view to future repairs (compare the dimensions of the proposed tool joint with those of the tool joint currently in use, shown with dashed line8, FIG. 1), which saves up to several...