a drill collar is a thick wall pipe that gives weight to the drill bit allowing the drill bit teeth to cut into the formation nc 31 (api 2-7/8 if) 4.500 2.000 2.43:1 api 7-5/8 reg 9.500 3.000 2.81:1 formula 2 (spiral drill collar weight in lb/ft
drill collars must sustain high torque and the mass of the drillstring at the bottom of the bha. japanese or chinese quality steel processed and machined to api spec 7-1. wall-sticking can be prevented by using spiral-grooved drill collars.
octl drill collars (slick and spiral) are processed from aisi 4145 h chromium the mechanical properties meet or exceed api 7-1 requirements.
drill collar. get info of suppliers manufacturers exporters traders of drill collar for buying in india. standard: api 7-1 steel grade: . spiral drill collars.
find high quality api 7-1 spiral non-magnetic drill collar for sale tool joint crossover at fype rigid machinery which has been dedicated to this field for many
drill collar size and connections. 6. forged square and hexagonal kellys. 7 1. steel making and forging. steel making. thyssenkrupp drilling tools are made from .. spiral grooving of thyssenkrupp collars provides sufficient depth in order to be effective.
drill collar od. 4 ¾”. drill collar id 81 1/2". elevator/slip recess od. 4”. material grade/yield. connection type. nc38 mechanical properties to api spec 7-1 / ns1. technical 4¾” od x 2¼” id x 4" recess spiral drill collar w/ nc38.
we provides a full range of slick and spiral drill collars manufactured in aisi 2-7/8" to 14"; slick or spiral; mechanical properties guaranteed to 1" below the
3 apr 2011 addendum 3 to ansi/api specification 7-1/iso 10424-1 . revise current clause 8.3 non-magnetic drill collars per the following changes and additions .. the spiral shall be as defined on the purchase order and
drill collar availability and description table. spec sheet 3 1/8 2 7/8" htpac 1 1/4 21.65 5100 - 6200 spiral. spec sheet 3 1/8 2 7/8" htpac 1 1/4 21.65
3447 products api 7-1 standard oilfield drill collar sub and crossover sub for sale .. api oilfield non magnetic spiral drill collar for sale with manufacture price.
drill collars are trepanned and drifted to api spec. 7-1. full-length heat-treatment processes ensure mechanical properties meet or exceed api spec. 7-1
standard:api spec 7-1. types:integral and friction welded / integral heavy weight drill pipe / integral spiral heavy weight drill pipe. hard band:arnco100xt
non-magnetic drill collar and stabilizer .. 7-1 with api monogram license. .. spiral grooved drill collars are suitable for more extreme drilling conditions.
the spiral cutting process reduces the collar weight by approximately 4 percent. spiral drill collars. rdt is certified to use the api mono- gram. specification 7-1
requirements of api spec. 7-1 for drill collars. itag drill collars are made of aisi 4145 h pin end. slip recess groove. elevator groove recess. slick or spiral
drill collar drill collars slick drill collar spiral drill collar nonmagnetic drill collars api drill collar. 3-1/8. 1-1/4. 30. 22. 2.57:1. nc 26-35 (2-3/8 if). 3-1/2. 1-1/2. 30. 27. 2.42:1. nc 31-41 (2-7/8 if). 4-1/8. 2. 30 or 31. 34. 2.43:1. nc 35-47. 4-3 /
including api specification 7-1 ns-1™ and individual customer specifications as when differential sticking is a problem spiral drill collars reduce the.
drill collars come in 30 or 31 foot lengths and are furnished as slick (as-rolled surface finish) or spiraled. 7/7-1 and api rp7g where applicable and can come customized with additional features spiral grooved or non-spiral (slick type).
magnetic drill collar. slick and spiral drill collars according to api spec 7-1; ns1 and ds1 properties; 4145h material. hot rolled; stress reflief