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What is a Wellhead in Oil and Gas??

The wellhead is a crucial component in the exploration and production of oil and gas. It is the entry point of the well, serving as the interface between the drilling and production equipment and the underground reservoir.

The wellhead is located at the surface of the well, above the casing and below the drilling floor (substructures). It serves as the structural support for the casing string and provides hydraulic isolation between each casing section. The top end of the casi

ng is sealed onto the wellhead, forming a secure connection. The primary purpose of the wellhead is to provide a suspension point and pressure seals for the casing strings. This ensures that the casing is securely supported and that any pressure within the well is contained. The wellhead also acts as a pressure-containing interface for the drilling and production equipment, protecting against potential blowouts or leaks.

During drilling operations, the wellhead is used in conjunction with a blowout preventer (BOP) to control the pressure within the well. If pressure is not contained, it can lead to a blowout, a dangerous situation where uncontrolled release of oil or gas occurs. The wellhead, BOP, and other pressure control equipment help to prevent such incidents. After the well is drilled, it is completed by installing a Christmas tree on top of the wellhead. The Christmas tree provides surface pressure control and serves as an interface with the reservoir rock. It includes isolation valves and choke equipment to regulate the flow of well fluids during production.

Wellheads are typically welded onto the first string of casing during drilling operations to form an integral structure of the well. In exploration wells that are later abandoned, the wellhead may be recovered for refurbishment and re-use.

In offshore operations, wellheads are located on production platforms or subsea locations. Surface wellheads are those located on platforms, while subsea wellheads or mudline wellheads are positioned below the water's surface. These offshore wellheads must withstand harsh environments and are designed to be more durable and resistant to corrosion.

The design and construction of wellheads must comply with strict industry standards and regulations to ensure safety and operational efficiency. They are regularly inspected, maintained, and repaired to ensure they remain in good working condition. Wellheads play a crucial role in the oil and gas industry, supporting safe and efficient exploration, production, and transportation of hydrocarbons.

oil wellhead omponents

• tubing heads

• tubing hangers

• tubing head adapter

• casing head

• casing spools

• casing hangers

• choke manifold

• packoffs (isolation) seals

• mudline suspension systems

• test plugs

Casing Head

Tubing Head

Coventional Wellhead And Christmas Tree

Contact oil well head suppliers & manufacturers in China

China is one of the most important supply bases in the global petroleum equipment industry chain. If you are looking for oil well head manufacturers and suppliers of related products, we will provide the latest inquiry and quotation, and contact us.
email : sales@sunrise-petroleum.com .You will receive a response within 12 hours.

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Sunrise Petro was restructured in October 2007. The company is an integrated petroleum machinery enterprise that focuses on the development and manufacture of oil drill and production machinery and Class I and II pressure vessels. In the meantime, the company also undertakes technical services such as installation as well as examination and maintenance of various petroleum engineering devices. Sunrise Petro covers a land area of 630,000 square meters, in which there are 180,000 square meters of building area. There are 23 subordinate production and operation units, more than 1,000 facilities of various kinds, and more than 1,500 employees. At present, the company has 2 chief technicians, 9 experts in various fields, 67 technicians, and 127 engineers at intermediate and senior levels.

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Any question about petroleum equipment , 
email :  sales@sunrise-petroleum.com. You will receive a response within 12 hours.