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Gaofeng Gaofeng

Drilling Tools

Drilling Tools

“GAOFENG” has strict systems of scientific research and quality assurance

“GAOFENG” has strict systems of scientific research and quality assurance

Non-magnetic Drill Collars

Non-magnetic Drill Collars

Non-magnetic Drill CollarsNon-magnetic Drill Collars using self-developed low-carbon stainless steel as API specification and implementation of SY / T5144 standard, which can be cold thread rolling, machine special double shoulder screw thread and by other specifications.NMDC DIMENSIONDrill Collar ModelOD DID dOALL mmShoulder ChamferDF mmBending Strength RatiomminmminNC23-3179.43 1/831.81 1/4915076.22.57：1NC26-3588.93 1/238.11 1/2915082.92.42：1NC31-41104.84 1/850.829150 or 9450100.42.43：1NC35-47120.74 3/450.829150 or 9450114.72.58：1NC38-50127.0557.22 1/49150 or 9450121．02.38：1NC44-60152.4657.22 1/49150 or 9450144.52.49:1NC44-60152.4671.42 13/169150 or 9450144.52.84:1NC44-62158.86 1/457.22 1/49150 or 9450149.22.91:1NC46-62158.86 1/471.42 13/169150 or 9450150.02.63:1NC46-65165.16 1/257.22 1/49150 or 9450154.82.76:1NC46-65165.16 1/271.42 13/169150 or 9450154.83.05:1NC46-67171.46 3/457.22 1/49150 or 9450159.53.18:1NC50-67171.46 3/471.42 13/169150 or 9450159.52.37:1NC50-70177.8757.22 1/49150 or 9450164.72.54:1NC50-70177.8771.42 13/169150 or 9450164.72.73:1NC50-72184.27 1/471.42 13/169150 or 9450169.53.12:1NC56-77196.87 3/471.42 13/169150 or 9450185.32.70:1NC56-80203.2871.42 13/169150 or 9450190.13.02:16 5/8REG209.68 1/471.42 13/169150 or 9450195.72.93:1NC61-90228.6971.42 13/169150 or 9450212.73.17:17 5/8REG241.39 1/276.239150 or 9450223.82.81:1NC70-97247.69 3/476.239150 or 9450232.62.57:1NC70-100254.01076.239150 or 9450237.3281:18 5/8REG279.41176.239150 or 9450266.72.84:1 Tolerance for NMDC Major DimensionOD RANGEOD DID dOAL LShoulder ChamferDFmmin≤88.9≤3 1/2+1.2 0+1.6 0＋152.4±0.4＞88.9~114.3＞3 1/2~4 1/2+1.6 0＞114.3~139.7＞4 1/2~5 1/2+2.0 0＞139.7~165.1＞5 1/2~6 1/2+3.2 0＞165.1~215.9＞6 1/2~8 1/2+4.0 0＞215.9~241.3＞8 1/2~9 1/2+4.8 0＞241.3＞9 1/2+6.4 0 NMDC Mechanical PerformancesOD RANGEYIELD STRENGTH σ0.2 MPaTENSILE STRENGTH σb MPaELONGATION δ4 %mmin79.4~171.43 1/8~6 3/4≥758≥827≥18177.8~279.47~11≥689≥758≥20Magnetic Performance（Magnetic Field＝1×105/4πA/m）1.relative magnetic permeability Ur＜1.0102.magnetic field gradient：ΔB≤0.05μT

Reaming Stabilizer Type HYF

Reaming Stabilizer Type HYF

HYF type drilling centralizer is a new downhole borehole correction tool with the functions of positive and negative drilling while drilling and centralizing the drilling tool. It is mainly used in boreholes prone to collapse and diameter reduction to ensure hole quality, effectively eliminate a large number of stuck accidents, and improve drilling safety. It is especially suitable for horizontal wells with complex well conditions, extended reach wells and conventional boreholes. Compact structure, safe and reliable, it can meet the requirements of efficient drilling, improve drilling safety, drilling speed and efficiency is a good tool, has been gradually promoted and applied at home and abroad. SpecificationsModeOD mmNeck OD mmID mmOAL mmCONN.HYF213-171φ212.725 φ171.45 φ71.42007 NC50-BB(BOX)×NC50-SRG(PIN)HYF152-124φ152.4 φ123.83 φ57.2 1915 NC38-BB(BOX)×NC38-SRG(PIN)

Drilling Safety Joint Type AJ-SZ

Drilling Safety Joint Type AJ-SZ

AJ-SZ type Drilling safety joint is a quick release safety tool connected to the fishing string. It is installed at the position where the string needs to be detached. It can transmit torque together with the string to withstand various compound stresses. Its structure design is reasonable, with fewer parts, easy to operate, is an indispensable tool in the well operation.   Specifications Model OD mm(in) ID mm (in) Temp ℃ Working Torque kN · m (lbf·ft) Max Tensile kN(lbf) Conn. API OAL mm(in) AJ-SZ165 165(6 1/2) 45(1 3/4) -40～150 15(11000) 1500(338000) NC50 1090（42.9） AJ-SZ172 172(6 3/4) 38(1 1/2) -40～150 20(14500) 2000(450000) NC50 1090（42.9）

Hydraulic Hole Opener type KY

Hydraulic Hole Opener type KY

KY type hydraulic Hole Opener is a new type of hydraulic variable diameter hole opener for drilling or workover operations. It is operated by controlling the mud pump switch at the wellhead to adjust the hydraulic pressure drop in the drill string and realize the opening and withdrawal of the blade. In other words, when the pump is opened, the pump pressure is used to push the piston to overcome the spring thrust upward and drive the blade to slide upward and open in the chute of the housing. When the pump is stopped or the drill tool is lifted up, under the action of spring thrust and wall friction, the blade of the tool moves down in the chute of the housing and withdraw to achieve the purpose of diameter change and reaming, so as to prevent the resistance or stuck when pulling out or tripping in. It has the advantages of reasonable structure, good wear resistance, adjustable reaming size, and can be used for hole enlargement, especially while drilling, realizing the process of "drilling and hole opening in one trip". SpecificationsModelBody ODmm/inFish Neck ODat both endsmm/inConnection（API）Hole Opening Rangemm/inOverall LengthmmRecommendedOperation PressureMPa/ PsiKY234-165234/9.25165.1/6.5NC50260-299(10.25-11.75)39704.55-5.6（650-800）KY295-210295/11.625210/8.256 5/8REG330-381(13-15)5290

Borehole Dressing Tool Type JYXZ-M

Borehole Dressing Tool Type JYXZ-M

The JYXZ-M Borehole Dressing Tool can maintain the standard diameter of the borehole in hard formations or abrasive formations. When the bit wears down to less than the standard size, the borehole dressing tool can expand it to the standard diameter. Whether drilling vertical or directional wells, the borehole dressing tool ensures that the drill bit or casing after it properly runs in. SpecificationsModelConnectionAPIWater Holemm(in)Lengthmm(in)Max.working LoadkN（lb）Max.Working TorquekN·m（ft·lb）Suitable well diametermm（in）　mm（in）Float Valve modelRecommended RPM　JYXZ-M3116 5/8 REG71.42044（80.47）280045311.2210.5-60～1102 13/166290003300012 1/48 1/4JYXZ-M311D6 5/8 REG71.41924（75.75）280045311.2210.55F-6R2 13/166290003300012 1/48 1/4

FMT type casing wear-resistant ring

FMT type casing wear-resistant ring

It only needs to be installed outside the drill pipe to effectively avoid the wear caused by rotation between the casing and the drill pipe joint, so as to effectively protect the casing and the drill pipe joint. It is simple in structure and easy to use.

XLQS type cyclone sand cleaner

XLQS type cyclone sand cleaner

Type XLQS Cyclone Desander is a sand cleaning joint. The principle is to design a special flow channel at the position of the sand cleaning joint

JYXZ type wellbore straightening tool

JYXZ type wellbore straightening tool

ype JYXZ Hole Straightener Reamer has the tendency to stay in the hole center and comes with a 10 ft of slick and smooth broach area, which is slightly over-gauged.

ZTX type high-efficiency oscillation drag reduction tailpipe insertion device

ZTX type high-efficiency oscillation drag reduction tailpipe insertion device

Model ZTX high-efficient vibration resistance reduction tail pipe running tool is connected to the drill string, so that the drill string at upper end of the tool can individually rotate independent of the drill string at the lower end. When any blockage or obstruction occurs to the drill string at the lower end, the tail pipe can eliminate the resistance and friction which is caused by the rotation of the drill string at the upper end, and reduce the helical distortion of the drill string.

TSDJ type lifting short section

TSDJ type lifting short section

he Sub connections are up to API standard. According to the shape of the up shoulder, the structure includes sloping shoulder and straight shoulder, which can be selected by customs.

YTLX hydraulic variable diameter stabilizer

YTLX hydraulic variable diameter stabilizer

its piston will retract automatically to prevent blockage or jamming phenomenon. Because of simple structure, good abrasion resistance, and wider adjustable diameter range, the stabilizer can be used to expand the hole, especially suitable for directional drilling and horizontal drilling.

LX type integral spiral stabilizer

LX type integral spiral stabilizer

This product tipped with carbide column in spiral ribs. It's characterized by high hardness, good toughness and weain the spiral rib belt r resistance, as well as long service life.

LX type integral spiral stabilizer

LX type integral spiral stabilizer

It's characterized by high hardness, good toughness and weain the spiral rib belt r resistance, as well as long service life.

HYQ type eye scraper

HYQ type eye scraper

Model “HYQ” Roller Reamer comes in two types: the drill string type and the near bit type. Both of the two types can be used for centralizing and reaming.

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