Christmas tree offering stack or block type christmas tree with pressure ratings up to 10,000 psi bottom connections and bottom sealing type are customized to suit the application valves actuation is offered in pneumatic or hydraulic according to requirements available for single or dual completions. Specification for wellhead and christmas tree equipment ansiapi specification 6a twentieth edition, october 2010 effective date. Wellhead and christmas tree is used for well drilling and oil or gas production, water injection and downhole operation. Pdf failure analysis of a fourway flange cracking in a kq65. The wellhead includes a tree valve block having an upper and lower section. Wellheads and christmas trees are different pieces of equipment figure 1. Also included are examples of casing and bit programmes that are consistent with the wellheads shown. Wellhead and christmas tree equipment manufacturer and. Producing wells that require pumps, such as sucher rod. The device described herein combines a subsea wellhead and a tree mandrel into a single piece. The design, fabrication and inspection of shengji wellhead and xmas trees are done in strict adherence to api 6a requirements.
A wellhead must be present to utilize a christmas tree and is used without a christmas tree during drilling operations. It comes in the types of normal oil production wellhead, thermal recovery wellhead, offshore wellhead, low and high pressure antisulfide wellhead. Wellhead and christmas tree composed by three parts, including casing head, tubing head, oil gas tree, used to connect casing string, tubing string and sealing layers between the casing and tubing of the annular space between, so to control the wellhead pressure and wellhead flow, it also could be used for acid fracturing, water injection. Kingsa provides a full line of completion equipment and christmas trees to suit the tubing program.
Pdf a christmas tree is a key wellhead device consisting of valves and fittings used for controlling oil and gas well fluid. It was formulated to provide for the availability of safe, dimensionally and functionally interchangeable wellhead and christmas tree equipment. Ultrasonic examination for wellhead, christmas tree, manifold and related equipment rev ecn no. For more information on wellhead and christmas tree, refer to the following article. The maximum operation pressure of the wellhead and christmas tree is 105. Wellhead means the upper terminal of the well including adapters, ports, valves, seals, and other attachments 15a ncac 02c. The casing head in a conventional wellhead system is the lowest part of the wellhead assembly and is almost always connected to the surface casing string. Rawabi hothed was asked what could be done to help recover the old, non functional, outdated well equipment which our client had on location and install a. The wellhead is the component at the surface of a well that provides the structural and pressurecontaining interface for the drilling and production equipment.
Threads, conform to api 5b stipulations for concerned tolerances. Wellheads xmas trees gate valves plug valves manifolds brochures. While christmas trees come in a variety of configurations based on a. Wellhead and christmas tree frac wellhead wellhead. Pdf well integrity christmas tree acceptable leakage.
Wellheads, xmas trees, gate valves, manifolds 1 wellheads, xmas trees, gate valves, manifolds index. May 29, 2017 the specifications are essential part of purchase orders. The christmas tree provides a means to control the flow of fluids produced from or fluids injected into the well, at surface. It supports the remaining parts of the wellhead and completion equipment. The specification includes detailed requirements for manufacturing tubular suspension equipment, valves, and fittings used at oil and gas well locations to contain and. Describes requirements and recommendations for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment, purchasing, repair and remanufacture of wellhead and christmas tree equipment for use in the petroleum and natural gas industries. A wellhead is used without a christmas tree during drilling operations, and also for riser tieback situations that later would have a tree installed at riser top. Wellhead and christmas tree components, types, functions. Specification for wellhead and christmas tree equipment upstream segment ansiapi specification 6a twentieth edition, october 2010 effective date. Specification for wellhead and christmas tree equipment.
Conventional wellhead, multi bowl wellhead, integral. Being a manufacturer of wellhead and christmas tree, we can offer refurbishment of components or built replacement parts particularly for old outdated design subject to availability of oem drawings and commercial viability. The lower valve block section is integral with the wellhead and includes access between the production line and the tubing annulus to the main bore of the wellhead. Specification for wellhead and christmas tree equipment name of standards organization. Provides a means for attachment to the surface casing string. A christmas tree is an assembly of gate valves, chokes and fittings included with the wellhead during well completion. Producing surface wells that require pumps pump jacks, nodding. In oil and natural gas extraction, a christmas tree, or tree, is an assembly of valves, spools and fittings used for not only extraction, but also for water injection or disposal, gas injection and other operations. This presentation is a course a bout wellheads which includes the basic components of the well head and the advanced techniques. The product includes conventional oil production wellhead, kys series wellhead and christmas. Tree range from 2 1167 116, pressure rating are 2000psi15000psi.
Christmas tree means the set of valves, spools and fittings connected to a wellhead to direct and control the flow of formation fluids. Wellhead and christmas tree is the main equipment for oil production, water injection and downhole operation. The specification includes detailed requirements for the manufacture of tubular suspension equipment, valves, and fittings used. Wellhead assembly consists of casing head, tubing head and xmas tree, which are applicable for connection of casing string and tubing string, sealing the annular space between casing and tubing, controlling the pressure of the production wellhead and adjusting the flow rate of oil gas wellhead as well as some special operations such as fracturing, injection and. Christmas tree provides a means to control the flow of fluids produced from or fluids injected into the well, at surface. Wellhead equipment made in the plant can be used for oil and gas production, water or vappr injection and so on. Wellhead and christmas tree completion system rehabilitation. The christmas tree is installed on top of the wellhead. Wells being produced with rod pumps pump jacks, nodding donkeys, grasshopper pumps, and so on frequently do not utilize any. Christmas tree oil and gas definition investopedia. Designed to reduce installation time and enhance safety, they use trims and proprietary sealing technologies for expected well conditions. Wellhead xmas tree free download as powerpoint presentation. The following article provides an overview of what are the various requirements to be considered while specifying the equipment for purchase. Christmas tree a christmas tree is an assembly of gate valves, chokes and fittings included with the wellhead during well completion.
Offering stack or block type christmas tree with pressure ratings up to. This specification identifies requirements and gives recommendations for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment, and purchasing of wellhead and tree equipment for. The difference between a wellhead and christmas tree. American petroleum institute legally binding document.
Jereh is a professional manufacturer of conventional wellhead, multi bowl wellhead, integral wellhead, dual tubing wellhead, esp wellhead, frac tree, christmas tree. A wellhead must be present in order to utilize a christmas tree and is used without a christmas tree during drilling operations. Many times, the words christmas tree and wellhead are used interchangeably. Wellhead and christmas tree components, types, functions and more free download as powerpoint presentation. By order of the executive director office of the federal register washington, d. A christmas tree is an assembly of valves, spools, and fittings used for an oil well, gas well, water injection well, water disposal well, gas injection well. Wellhead and christmas tree components, types, functions and. Helping students who care about petroleum industry to increase their. It is an api 6a certified wellhead and xmas tree equipment manufacturer. Wellhead and christmas tree components, functions and more. Installed on subsea wellhead, the tree is used to connect and support tubing string, seal off casing pipes and casingtubing annulus, isolate borehole fluids from external sea water, control wellhead production pressure, and adjust borehole flow rates. It was formulated to provide safe, dimensionally and functionally interchangeable wellhead and tree equipment. A vertical assembly of mechanical elements used in oil exploration and production in surface and underwater oil and. Cameron wellhead systems range from conventional to applicationspecific systems for geothermal wells, jackup rigs, unconventional plays, and more.
49 916 417 1126 637 1053 615 984 103 572 877 358 1338 129 24 1158 269 762 1493 1330 749 446 1084 1247 149 1460 23 967 895 455 1523 696 776 721 1408 834 137 649 256 967 1408 117 459 344 1158 190