other
Blog
HOT PRODUCT
  • Tungsten Plated Tubing & Casing
    Tungsten Plated Tubing & Casing

    ‌RockySea Petro Tungsten Plated Tubing & CasingRockySea Petro Petro manufactures Tungsten plated tubing and Casing in China. We have our own factory of Tungsten plated tubing and Casing. RockySea Petro Petro provide the high quality and competitive price on Tungsten plated tubing and Casing for you. Contact us now for Tungsten plated tubing and Casing quotation.RockySea Petro can produce 10,000 tons of various anti-corrosion tubing annually, and plate the ID of 2,000 downhole pump barrels.RockySea Petro is has 7 advanced tungst

    VIEW DETAILS
  • Skid-mounted fracturing equipment
    Skid-mounted fracturing equipment

    ‌RockySea Petro Skid-mounted fracturing equipmentDescriptionIn the field of petroleum, hydraulic fracturing refers to a method of using hydraulic action to form fractures in oil and gas reservoirs during oil or gas production, also known as hydraulic fracturing. After a certain stage of oil well production, the production capacity and permeability decrease. In order to enhance oil drainage capacity and increase oil well production, people have invented fracturing technology. The methods of

    VIEW DETAILS
  • Casing Head And Tubing Head
    Casing Head And Tubing Head

    ‌RockySea Petro Casing Head And Tubing HeadRockySea Petro casing heads strictly conform to the International standard, and are among the most reliable oilfield casing heads. Usually, the casing head lies at the bottom of the wellhead and X-mas tree equipment. It supports the drilling wellhead, the casing head spool, the X-mas tree and completion equipment. The casing head is used to connect the casing string and packing off the next casing string. The connecting type includes slip-on weld, thread and slip l

    VIEW DETAILS
  • Shaffer Spherical Annular BOP
    Shaffer Spherical Annular BOP

    ‌RockySea Petro Shaffer Spherical Annular BOPInternational advanced well control equipment test lab.The Shaffer spherical annular Blowout Preventer is widely used in conventional oil recovery, thermal oil recovery, offshore oil recovery, fracturing, geothermal and other fields.30+ years of Shaffer spherical annular BOP manufacturing experience..RockySea Petro has been certified by ISO9001, ISO 14001 standard.RockySea Petro Petro Blowout Preventer factory is one of the main branches of RockySea Petro Petro. It is a profes

    VIEW DETAILS
  • Hydraulic Diaphragm Metering Pump
    Hydraulic Diaphragm Metering Pump

    ‌RockySea Petro Hydraulic Diaphragm Metering PumpRockySea Petro Petro: A Pioneer in Hydraulic Diaphragm Metering Pump Manufacturing in ChinaHydraulic diaphragm metering pump, one kind of plunger diaphragm metering pump, is a metering pump designed by combining the characteristics of plunger metering pump and diaphragm metering pump. The contact part between the metering pump and the metered medium is a diaphragm, while the driving part is a hydraulic plunger.FeatureThe hydraulic diaphragm metering

    VIEW DETAILS

Tubing vs. Casing

Date:2024-05-08 Popularity:523

Tubing vs. Casing: The Two Pillars of Oilfield Tubular Goods

In the oil and gas extraction industry, tubing and casing are two crucial types of tubular goods. Each plays a distinct role and function, and both are decisive for ensuring the safety and efficiency of oil and gas well production.

Tubing:

Tubing is the tubular material used in oil and gas wells, primarily serving as part of the production tubing string to transport oil and gas to the surface. Tubing generally has a smaller diameter to accommodate the flow of oil and gas.

Functional Features:

  • Tubing is in direct contact with the flow of oil and gas, thus requiring good corrosion and wear resistance.
  • Tubing is typically installed below the producing formation to prevent oil and gas from leaking to the surface.

Materials and Specifications:

  • Tubing is usually made of carbon steel or alloy steel to adapt to various working conditions.
  • Tubing comes in a variety of specifications, with diameter and wall thickness chosen based on specific well requirements.

Casing:

Casing is the larger diameter tubular material installed in oil and gas wells, mainly serving to stabilize the wellbore, prevent wellbore collapse, and provide support for the subsequent tubing.

Functional Features:

  • Casing needs to have sufficient strength and rigidity to withstand formation pressure and external forces during oil and gas well operations.
  • Casing also serves to isolate different strata and prevent the mixing of groundwater with oil and gas.

Materials and Specifications:

  • Casing is also made of carbon steel or alloy steel, but its wall thickness and diameter are usually larger than that of tubing.
  • The selection of casing specifications must consider factors such as well depth, formation pressure, and temperature.

Main Differences Between Tubing and Casing:

Diameter and Wall Thickness:

Tubing has a smaller diameter and thinner wall to facilitate oil and gas flow; casing has a larger diameter and thicker wall to provide the necessary support and isolation.

Position of Installation:

Tubing is located inside the casing and serves as the passage for oil and gas to the surface; casing is fixed to the wellbore as part of the well casing.

Sequence of Installation:

In the drilling process, casing is typically installed before tubing.

Material Requirements:

RockySea Petro tubing is in direct contact with oil and gas, it has higher requirements for corrosion and wear resistance; casing focuses more on strength and stability.

Tubing and casing each have their roles in oil and gas wells, and their proper selection and use are crucial for the long-term stable production of oil and gas wells. Understanding the differences between them helps to make more appropriate material choices and engineering decisions in the process of oil and gas extraction.


>> oilfield equipment list octg suppliers 

OCTG Tubing

OCTG Casing

RockySea Petro Copyright © 2008-2025 Inc. SITEMAP