What is wellhead Services?
The primary purpose of a wellhead is to provide the suspension point and pressure seals for the casing strings that run from the bottom of the hole sections to the surface pressure control equipment. While drilling the oil well, surface pressure control is provided by a blowout preventer (BOP).
What is a subsea wellhead?
The subsea wellhead system (Fig. 1) is a pressure-containing vessel that provides a means to hang off and seal off casing used in drilling the well. The wellhead also provides a profile to latch the subsea blowout preventer (BOP) stack and drilling riser back to the floating drilling rig.
How much does a wellhead cost?
The average wellhead price of crude oil decreased $2.51 to $33.41 in September 2020 from August 2020. The monthly average price was $16.87 lower than the average price of $50.28 in the same month last year.
What is the difference between a wellhead and Christmas tree?
Many times, the words Christmas Tree and Wellhead are used interchangeably; however, a wellhead and Christmas tree are entirely separate pieces of equipment. A wellhead must be present in order to utilize a Christmas tree and is used without a Christmas tree during drilling operations.
What is a subsea well?
Subsea drilling, or offshore drilling, is a process where a wellbore is drilled below the seabed for the purpose of oil excavation. Subsea drilling is a process that involves a lot of complexities as oil rigs are utilised to remove crude oil, then filtered and used in many different areas.
How does a subsea BOP work?
Subsea BOPs are connected to the offshore rig above by a drilling riser that provides a continuous pathway for the drill string and fluids emanating from the wellbore. In effect, a riser extends the wellbore to the rig. Blowout preventers do not always function correctly.
How long does a well last?
The average lifespan for a well is 30–50 years. 2. How deep is the well? Drilled wells typically go down 100 feet or more.
Why is wellhead called Christmas tree?
In petroleum and natural gas extraction, a Christmas tree, or “tree”, is an assembly of a multi-valved structure consisting of valves, spools, and fittings used to control the flow of oil from the well. The shape of the wellhead structure with valves looks like a pine tree so the wellhead is called as “Christmas tree”.
How many types of wellheads are there?
Two types of wellhead chokes are used. They are (1) positive (fixed) chokes and (2) adjustable chokes. Placing a choke at the wellhead means fixing the wellhead pressure and, thus, the flowing bottom-hole pressure and production rate.
What is subsea service?
Subsea services: combining technical expertise with safety support to the development of offshore oil and gas fields and wind farms. inspection, Maintenance, and Repair (IMR) of offshore structures.
What is subsea business?
Oil and gas. Oil and gas fields reside beneath many inland waters and offshore areas around the world, and in the oil and gas industry the term subsea relates to the exploration, drilling and development of oil and gas fields in these underwater locations.
What do you need to know about ACC Wellhead Services?
ACC offers trained surface wellhead technicians along with specialized maintenance and well services equipment for onshore and offshore wells. Our Wellhead Maintenance service is backed by our range of purpose-built ACC products and high quality, proven lubricants, sealants and flushing products.
What do you need to know about wellhead maintenance?
Our Wellhead Maintenance service is backed by our range of purpose-built ACC products and high quality, proven lubricants, sealants and flushing products. We offer specific testing and maintained programs as instructed by our clients or can put together a full well integrity program to ensure your entire field is effectively tested and serviced.
Where can I rent frac and wellhead equipment?
Northern Oilfield Services is an oilfield supply company that offers wellhead and frac equipment rental equipment to oilfield companies in North Dakota, Wyoming, Colorado, and other western states. We will rent wellheads or sell them, as well as provide routine maintenance for them, ensuring they are compliant.
What does Claxton do with surface wellhead systems?
Claxton is uniquely positioned to innovatively solve clients’ offshore operating challenges and add value to projects to achieve overall increased efficiency. “Surface wellhead systems and services were Claxton’s very first product line over three decades ago.