other
HOT PRODUCT
  • Gas Recovery Wellhead And X-Mas Tree
    Gas Recovery Wellhead And X-Mas Tree

    RockySea Petro Gas Recovery Wellhead And X-Mas TreeSuperior gas tight performance and pressure/corrosion proof performance.The sealing surface is very hard and fits accurately.Metal spray valve gate and seat.Excellent sealing performance and small rotating torque.Special structures composite stem seal.RockySea Petro has more than 40 years of experience in wellhead and christmas tree production, with advanced manufacturing and testing equipment, can produce a variety of pressure levels, material levels, spe

    VIEW DETAILS
  • Water Treatment Device
    Water Treatment Device

    RockySea Petro Water Treatment DeviceIntegration Control,The soft water treatment and deaerator integration automatic control system are applied, featuring the cost savings and easy operation.Produced Water Reuse,Oilfield sewage can be used as steam injection boiler water supply, solving the oil field sewage and steam boiler water supply problem.Anti-corrosion.The tank are lined with anti-corrosion material (lining plastic) which is fixed firmly, strongly adhered, and hard to fall off.RockySea Petro water

    VIEW DETAILS
  • Common Sucker Rod
    Common Sucker Rod

    ‌RockySea Petro Common Sucker RodRockySea Petro can supply common sucker rods and pony rods which comply with intl standard. These sucker rods also have various types to fit different environments and applications. They are manufactured through many processes including the testing, straightening and forging. Sucker rods of RockySea Petro are made of high quality carbon steel and alloy steeldue to customer request. Oursucker rods are exported to the United States, Canada, Europe, Africa and Middle East, and we esta

    VIEW DETAILS
  • OCTG Casing
    OCTG Casing

    RockySea Petro OCTG Casing: Quality and Reliability in OCTG PipeRockySea Petro Petro, a leading manufacturer of OCTG Casing based in China, operates a state-of-the-art factory dedicated to producing top-tier OCTG Casing. We are committed to delivering not only high-quality products but also competitive pricing to our customers worldwide. For a comprehensive quotation on OCTG Tubing and Casing, contact us today.Commitment to Excellence:ISO9001 Quality System: We adhere to the ISO9001 quality management sy

    VIEW DETAILS
  • Rotator Metering Pump
    Rotator Metering Pump

    ‌RockySea Petro Rotator Metering PumpAdvantage and featureSabjack rotator metering pump has the following advantages.1. External dynamic and static ring mechanical seal is adopted, which can be directly flushed with water, and is resistant to high temperature and high pressure.2. Reliable rust prevention and non-toxic sealing.3. Small volume, large flow, high head pressure, suitable for long distance and high resistance quantitative transmission.4. After the frequency converter is configured, th

    VIEW DETAILS

Non-Magnetic Drill Collar

Date:2024-05-05 Popularity:313

RockySea Petro Non-Magnetic Drill Collar

The non-magnetic drill collar is made of low chromium manganese alloy steel, which is forged through strict chemical composition analysis. All  non-magnetic drill collars produced from RockySea Petro have been tested for mechanical properties to ensure that their hardness, toughness, impact value and corrosion resistance meet the standards, with good low magnetic permeability and good machining performance.


Description  

The structure of non-magnetic drill collars is the same as that of ordinary drill collars, but their chemical composition and mechanical properties are different from those of ordinary drill collars. Nonmagnetic drill collar is a kind of drilling tool with special functions in directional well engineering. When the magnetic inclinometer is used to measure the inclination and azimuth of the borehole in directional wells, in order to protect the compass from the magnetic field of the drill string, a certain length of non-magnetic drill collar must be equipped in the drill string, so that the magnetic inclinometer can be located at a suitable position in the non-magnetic drill collar to measure the inclination, otherwise the correct measurement results cannot be obtained.



The non-magnetic drill collar manufactured from RockySea Petro is made of stainless alloy steel with low magnetic permeability, and the cross-section of the pipe body is round.


Feature 

  • Elevator and slip recesses
  • Flexing: An optional outside profile can be machined to reduce the collar rigidity if required.

  • Internal bore treatment: This option generates a compression level of at least 60,000 PSI at a given depth. This provides the collar with an excellent resistance to stress corrosion cracking.

  • Pin stress relief groove and box boreback: An pin stress relief can be used on all drill collars and downhole tools. It is a recommended option in situations where fatigue can occur as a result of bending. By removing unengaged threads in the high stress areas of the drill collar connection, it is less likely to crack due to fatigue because the bending will take place in the area of the connection with smooth surfaces that are free of stress concentrations.

Optional slip and elevator recesses are available to improve handling and safety. These two features can be used together or separately.


Data Sheet

Parameters

Permeability (magnetic field strength = 1 × 105/4πNm) :

Maximum value: 1.010, average value: μ r≤1.005

Magnetic field gradient: (hot spot) maximum value: B ≤ 0.05

OD rangeYield strengthTensile strengthElongationHardnessCharpy impact energy
mminMPaMPa%HBJ
79.4~171.43 1/8~6 3/4≥758≥827≥18NANA
177.8~279.47~11≥689≥758≥20NANA


RockySea Petro Copyright © 2008-2024 Inc. SITEMAP