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Casing hangers details

R&T group introduce you the details of casing hanger, which you should know as an oilfield worker.

1. Thread casing hanger.

Thread type (i.e., screw-type) casing hanger, the equivalent of a casing collar, without cutting casing (W and WE both need to) save trouble, don't even open the bop can suspension bushing, solve the problem of wellhead suspension seal. But you need to calculate the depth of the casing to avoid the bottom. Generally used in relatively stable production well. The general mandrel (thread type) hanger is used with the threaded casing head, and the corresponding slip hanger can also be replaced. The seal principle of the sleeve head metal and rubber seal is the same as that of the tubing head metal and rubber seal.

CASING HANGER BY R&T Group

2. Slip casing hanger.

A. The structure of the slip casing hanger:

The kava hanger is mainly made up of kava (quartile), kava (two equal parts), rubber seal (two equal parts), supporting seat (two equal parts), etc.

B. The working principle of the slip hanger:

Combining two and a half, embrace a casing hanger, as a whole into the casing head hole, make the slip tooth tightly stuck casing, the casing, under the action of gravity and slip tooth taper slip teeth wedge more and more tightly, make the slip tooth of casing card more and more tightly. However, the rubber seal produces deformation under the action of gravity, forming a seal to the casing and casing head body.

slip casing hanger

C. Inverter hanger.

Pour slip hanger is bolted at the bottom of the casing head ontology, the casing into BT after sealing ring to let slip, the slip tooth tightly stuck casing, the casing weight and the effect of taper, slip teeth wedge more and more tightly, make the slip tooth of casing card more and more tightly.

1. WE type slip casing hanger:

Generally speaking, WE type slip hanger is used in the surface, characterized by: large size, sealing annulus air pressure is not too high (compare W type). Another case is that casing cannot be well cementing on carry down (this is the prerequisite of W type hanger), WE can passive (casing, hanger sealing, rely on manual and without hanging load excitation seal) the installation of the seal, repair. If the factors such as suspension and seal are not strictly concerned, WE are generally interchangeable with the same size as W type.

2. W type casing hanger.

Compared with the WE type, it relies on the suspension of the drill string to trigger the seal, which is characterized by the maximum suspension tonnage, better sealing and safer, generally used in the suspension of the technical casing.

3. WD type hanger.

It is used only for surface casing head and bottom connection surface casing.

Casing hangers from R&T Group

r&t casing hanger

To buy casing hanger, go to http://www.rtpetro.com/product-service/casing-hanger.html.

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R&T Tubing head series products

The tubing head is a device or nipple with flanges at both ends. Before perforating, install it on top of the top casing head. To support the tubing, and seal the annulus space between the tubing and the production casing. It also provides an entrance to the casing and tubing ring space through the side outlet.

all types of tubing head

Function of tubing head.

Suspension well tubing string.

The annular space between the sealing tubing and the casing.

Provide a transition connection for the casing head and the tree.

The two sides of the tubing head can be used for water injection and well washing.

The structure of the tubing head.

The tubing head consists of tubing head, tubing hanger, sealing device, top wire, gate valve, pressure gauge and flange. The top of the tubing is connected to the tree by a flanged flanged flange. The form of the connection is flanged and clamped.

1). Tubing hanger

The tubing hanger is a device that sits in the cone of the tubing head and is used to hang the tubing string and provides a seal between the hanging tubing and the cone seat of the tubing. Offshore oil and gas well completion is generally under subsurface safety valve, so the tubing hanger must be connected to the channel of fluid control line, underground electric submersible pump well must also have a bleed valve channel and cable crossing and seal. After connecting the tubing, it forms a round whole, and sits in the dual tubing hanger seat, and must be aligned to the guide block on the oil pipe line.

2). Tubing head spool

Tubing head spool is main body structure of the tubing head, tubing head spool connection at the bottom of the casing head, at the top of the tree, are at the top and bottom steel ring seal, tubing head spool to tubing provide a carrier and a container.

The tubing head is used to observe the casing pressure of positive and reverse circulation well, and the operation of the ring space through the oil jacket.

3). Tubing hanger wire

After the tubing hanger is in place, the tubing hanger wire must be installed. The action of the tubing hanger wire is to lock the tubing hanger to prevent the tubing from moving and moving up and down.

3). Top flange

Top wire installed on the casing spool flange plate, tubing hanging sat on the top flange of silk, and act as a squeeze packing, sealing oil set of annular space, stuck pipe at the same time, prevent the borehole pressure is too high to tubing of the pillars.

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Fault check and maintenance of special tubing head spool and casing head joint

Casing hanger also has a main seal and seal design, the main casing hangers types are rubber seal and seal USES is square type "O" ring seal in the form of combination of vice seal is to use "BT" sealing ring and sealing grease (PTFE) was injected through the seal.

1. Seal ring leakage of two flange joints.

If leakage occurs in the sealing gasket ring of the two flange joints, the main seal or secondary seal of the casing hanger has been leaked, and it may be that both the main seal and the secondary seal are leaking. The cause of the main seal leakage is square seal is damaged or heat expansion will casing pipe hanger upward lift, causing party type sealing ring seal effect, so should pay special attention to when the casing hanger, square seal damage can not be cut. The reason for the secondary seal leakage is that the "BT" sealing ring cannot be sealed. (PTFE should be injected into the "BT" sealing ring after the tubing head is connected with the casing head. With the increase in the production time of the wellhead, the PTFE in the "BT" sealing ring will slowly drain away, so that the seal of the "BT" sealing ring will slowly fail, which means that the auxiliary seal will not work.

Treatment method:

1. The solution to the leakage of the auxiliary seal.

By injecting teflon into the "BT" sealing ring through the grease hole in the special four-way of the tubing head, the "BT" sealing ring is excited to "hold" the casing hanger, thus achieving the sealing effect.

2. Solution of main seal leakage.

Primary seal if leakage occurs, through tight wire casing spool flange on the top, make the casing hanger moves down, stimulate the square on the hanger sealing, so as to achieve the purpose of sealing. It is also possible to inject a large amount of sealing grease to compensate the leakage gap through a pressure hole in the special four-way lower flange of the tubing head.

Through a and b steps later, can be through tubing head spool is a special flange of a pressure test hole check main seal leakage resolved, if solved, can the tubing head spool is a special flange and casing on the spool flange connection bolts are tight, so as to solve the leakage problem between two flanges.

3. Leakage of top wire.

The leakage of the top wire indicates that the main seal or auxiliary seal of the hanger has been leaking, or it may be that the main sub-seal has been leaking, which may be replaced by the top wire sealing ring after the 1.1 treatment method.

4. Maintenance and maintenance.

Seal the "BT" seal regularly (once every 6 months) to ensure that the "BT" seal can be reliably sealed.

Check the flange connecting bolt and the top screw cap regularly, and tighten it immediately if it is loose.

to buy casing hanger, or wellhead equipment, oilfield christmas tree, please click: http://www.rtpetro.com/.

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The wellhead installation standardization process

13-3/8 "casing head installation

1. 17-1/2 "drill bit drilling into the design well, pulling out the drilling tool, and then entering 13-3/8" surface casing to predetermined position, cementing.

2. Cut the 20 "catheter, then lift the upper portion of the catheter, with a height difference of 510mm from the 20" catheter, and the line with a rough cut of 13-3/8 ".

3. Remove the broken casing.

4. After measuring the height of the catheter, it should be cut with the height difference of 505mm from the catheter, and then cut 13-3/8 ".

5. Check the original horizontal condition of 13-3/8 with the horizontal ruler, if not, cut the higher part to the level.

6. Use gas cutting method to cut out the - end of the 3/8 "casing preliminary groove, groove in the wheel again into a 10 * 30 °, and asking for groove edges and a smooth feel.

7. The sealing parts of the surface outside casing string and with emery cloth "BT" seal ring will be part of the smooth, check the presence of groove (if any should be removed), and then used lubricating oil (grease) daub "BT" seal ring will be through the external surface of the casing string.

8. Use the hook hoist 13-3/8 "casing head, level as much as possible, check the" BT "seal on no installation right and in good condition (such as damage, must replace), cleaning" BT "seal, and then evenly smear a thin layer of lubricating oil (grease).

9. Adjust the position of the two sides of the casing head, centralize, smoothly lower the casing head, pay attention to the observation, and prevent the broken "BT" sealing ring.

10. After the casing head is placed in place, adjust the adjusting bolts on the bottom supporting circular chassis of the casing head to make the ring plate contact the catheter.

11. Weld ring steel plate and tube end face weld (ring steel plate and 13-3/8 "sleeve welding shall be determined by the user himself).

12. 13 - were examined with a spirit level in the plane of the 3/8 "casing head flange level, if not, can adjust the casing head adjusting bolt supporting circle at the bottom of the chassis, adjust the level, lock bearing round four locking bolts on the chassis.

13. Discharge a two plug at the bottom of the casing head, and on the opposite side of 180 ° symmetrical injection joint, injecting sealant BT seal injection molding operations.

14. After the test pressure is qualified, remove the test pressure pump and remove the pressure from the pressure cap to the test pressure joint.

15. Unscrew the 8 M30 x 3.5 slip bolts in the bottom of the kava, respectively, and the torque should be greater than (or equal to) 250N·m, with a guarantee slip to the casing.

16. Loosen the bearing round four locking bolt in the chassis, adjust bearing round four adjusting bolts on the chassis, to check whether the casing head slips and casing's prison (or with hook up to 5 ~ 10 tons of pulling force, to check whether the casing head slips and casing's prison), then four locking bolt locking.

17. In order to maintain the rigid throttle, the outlet pipeline of the pressure well pipe shall be unchanged from the ground level to prevent the shallow gas, and shall replace the four-way, bop stack and the mud outlet pipe on the head of the casing of 13-3/8.

18. Connect 13-3/8 "test pressure plug with the drill pipe, and through the mud outlet pipe, the blowout preventer group, and replace the four-way test plug to be put into, so that it is located on the shoulder of the casing head of 13-3/8".

19. The blowout preventer shall be pumped into 5000PSI (35MPa) water pressure by the drill pipe, and the test pressure shall be carried out on the connecting parts to check the sealing conditions everywhere.

20. After the test pressure is successful, release the pressure first, then open the blowout preventer, and retrieve 13-3/8 "test pressure plug.

21. By drill pipe connect to take out the tools and 13-3/8 "wear, and through the bop stack into 13-3/8" under wear, completes the relevant tags, turned into the flange on the four top silk, to resist wear, attention to wear can be set, not on the top of the tight, lest pressed flat against the ground, returned to take out the tools.

9-5/8 "casing head spool installation procedure

1. Use 12-1/4 "drill bit to drill down into the design well, get out the drill tool, return the four top wire, and use the feeding tool to recover 13-3/8" anti-wear sleeve.

2. Insert 9-5/8 "casing to the predetermined location of cementing, waiting for coagulation.

3. Remove 13-3/8 "casing head and replace the bolt and nut between the four links, and guard against the bop stack.

4. In the casing head flanges of 13-3/8, two boards are placed across to support the 9-5/8 "bushing assembly."

5. Carry 9-5/8 "casing to produce 4-5 tons of overtension.

6. Alignment split 9 - the 5/8 "casing hanger guide positioning pin, rotating casing hanger, close around 9 - the 5/8" casing discharged from the bottom up one by one will handle, remove the board and make the 9-5/8 "casing hanger component located to 13 - the 3/8" casing head shoulders, then relax 9-5/8 "casing, let slip around the casing, add 4 to 5 tons weight on the slip inspire rubber seal, and then seal the annular space.

7. From the flange surface about 6-3/4 "(170 mm), 9 - the 5/8" casing cutting, and will cut down a 10 * 30 ° groove.

8. 13 - the 3/8 "casing head, clean steel ring groove, and the steel ring groove place clean nondestructive BX160 seal rims, and then carefully put 9-5/8" casing cross from 9 - above the 5/8 "casing set up slowly, in two flange bolt tightening.

9. The Odyssey 9-5/8 "casing spool flange joint on the two lower, and on the opposite side of 180 ° symmetrical injection molding injection joint sealant, BT seal injection molding operations.

10. 9-5/8 "after BT sealing pressure testing qualified, replace cross the bop stack installation, mud outlet pipe under 9-5/8" pressure testing, pressure testing of each connection, check the sealing situation everywhere, after testing qualified, unloading first, after open the blowout preventer.

11. Remove the pressure testing, through the drill pipe and out into the tools, 9-5/8 "under wear, marking, twist wire into the top four on the flange, to resist wear, attention to wear can be set, don't be too tight, lest pressed flat against the ground, returned to take out the tools.

7 "casing installation procedure

1. Use the 8-1/2 "drill bit to drill down to the design well, pull out the drill tool, return the top wire, and use the feeding tool to recover the anti-wear sleeve.

2. Lower the 7 "casing to the predetermined location, cementing and waiting for coagulation. Remove the bolts and nuts betwee

n the sleeves and replace the four - pass, and watch out for the bop stack.

3. On the four-way flange of the casing, two pieces of planks are placed across to support the 7 "casing hanger assembly.

4. Top lift 7 "sleeve to produce 4~5 tons of super tension.

5. Alignment split 7 "casing hanger oriented locating pin, rotating casing hanger, close around 7" casing handle discharged from bottom up one by one, remove the board, to hang 7 "set of pipe components located to 9 - the 5/8" casing head shoulders, then relax 9-5/8 "casing, let slip around the casing, adding 4 ~ 5 tons of weight on the slip, stimulate the rubber seal, and then seal the annular space.

6. From the flange surface about 6-3/4 "(170 mm), cut 7" casing, and will cut down a 10 * 30 ° groove.

7. When drilling to well completion technology casing depth, under the casing and casing hanger hanging over, cutting 7 "casing flange surface distance of about 170 mm, the cylindrical casing with emery cloth to rust, and oil, casing top down 6 x 30 ° chamfer and smooth.

8. Clean casing head steel ring groove, and the steel ring groove place clean nondestructive BX158 seal rims, then carefully will slowly set into the tubing spool from 7 "casing above, two flanges bolted, tighten to specified torque.

As one of the biggest oil and gas Christmas trees manufacturers, R&T group offers all types of wellhead components.

Tubing head installation

1. Before hoisting, check whether the flange specification and sealing parts of the tubing head are matched with the casing head, whether the sealing parts and sealing parts are damaged, and if there is any need to take timely measures.

2. Clean the sealing part of the casing hanger (or casing) and apply the butter. If the burr should be polished, if the sealing part is the casing, the groove should be cut and polished.

3. Fill the casing hanger (or casing) with the casing of the casing with the sealing grease EM08, then place the clean and undamaged sealing ring on the casing head.

4. The lifting tubing head (attention lifting position) is attached to the head of the casing, and the bolts and nuts are connected by symmetry.

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Oil Recovery Equipment Series From R&T Group

Our company was specialized in research, design, manufacture and service of Oil Recovery Equipment. Products include pumping unit, sucker rod, polish rod and sucker rod pumping. Our products and service have been used in more than twenty countries and regions, including America, Canada, Mexico, Germany, Australia, India, Indonesia, Saudi Arabia, Colombia, Kuwait, Russia, Kazakhstan, and so on. By the cooperation with famous companies, we have become the specialized manufacturing company, owning the independent intellectual property.

Specification of our Oil Recovery Equipment

In strict compliance with ISO 9001 quality system standard, we have been equipped with advanced inspection equipment. Each link from raw materials processing to production process is strictly operated; with well-qualified quality inspectors and perfect testing equipment effectively controlling the whole production process and ensuring quality complied. Scientific design, compact structure and reasonable arrangement make onsite maintenance, parts replacement, installation and dismantle much easier. Our products are suitable for high temperature, sand and other special heavy oil well and super heavy oil, and successfully solves the problems of the exploitation for super heavy oil.

Items of Oil Recovery Equipment

Pumping unit:  designed and manufactured in accordance with API 11E.

Sucker rod: an essential part in the rod production system, is used to connect the pumping unit on the ground and the oil well pump down in the well.

Polish rod: is widely used in hardware kitchen utensil and appliances, shipping, petrochemical industry, machine industry, medicine.

Sucker rod pumping: can be run into oil tube with the sucker rod as an integer and it is not necessary to lift the tubing string when serving the pump.

Oil Recovery Equipment Series for Sale

1.  Designed and manufactured in accordance with API 11E. 2. Provide conventional beam pumping unit and all kinds of unconventional

pumping unit

(Dual Horsehead pumping unit, belt pumping unit, etc.). 3. Modular design has the advantages of reasonable structure, stable operation, low noise, convenient operation and maintenance. 4. The brakes use holding type structure, equipped with a safety device, flexible operation, rapid braking, safe and reliable.

Sucker Rod

The sucker rod, an essential part in the rod production system, is used to connect the pumping unit on the ground and the oil well pump down in the well. Products comply with Specifications of

Sucker Rods

(API Spec 11B) and other related standards, and have acquired the authorization to use Official API Monogram. The company produces K, C, D or HL sucker rods with various specifications complying API's requirements.

Polished Rod

R&T has a team of skilled and experienced staff with excellent qualities. With advanced production equipment and technology, it has constantly been developing and making new products to meet the meet the needs of customers.

Sucker Rod Pumping

R&T Group has been certified by ISO 9001 Quality Management System, and licensed to use API certificate. The company has established a complete inspection system and apply entire–process–control and inspection, from raw materials, semi–finished products to finished product. Our Products have been distributed  to USA, Canada, Romania and Indonesia and Indonesia ect..

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Oilfield Pipeline Series and Pipe Fitting for Sale

We are specialized in producing all kinds of oilfield pipe, such as seamless line pipe, welded pipe, tubing, casing, FRP pipe, stainless steel pipe, ductile cast iron pipes, pipe fitting, flexible elbow ect.. Our products are widely used in transportation pipeline for oil and natural gas, coal gas, heating supply, drainage engineering, electricity and chemical, also used for piling, structure, ocean engineering, machinery, mine, sports, automobile and many other industries. Our company equipped with advanced production equipment. Engaged a group of professional technical experts and managers to enhance the product's technology and management level, and has strong product developing capabilities.

Specification of our Oilfield Pipeline Series and Pipe Fitting

Our products meet API standard and are produced in accordance with ISO quality management system standard strictly. From the beginning to finishing of producing, every process is strictly controlled to ensure product quality and achieve customer satisfaction. Customer’s satisfaction is the first for us, and we are winning more and more customers with our great strength, high quality and excellent service.

Items of Oilfield Pipeline Series and Pipe Fitting

FRP Pipe: strong adaptability to temperature, temperature range of use: more than-70-c is less than 250 degrees Celsius, pipe don't crack under freezing medium.

Seamless Linepipe: excellent to earthquake and directionless horizontal force due to circular section.

Welded Pipe: standard-GB, GB/T 3091-2001, GB/T3091

Tubing: the material for tubing is the TMCP rolling coils. This makes the pipe uniform microstructure and had little material defects such as stomata, inclusion and so on. This essentially guarantees the intrinsic quality of tubing.

Oilfield Pipeline and Pipe Fitting Series for Sale

FRP Pipe

(1) Chemical inert material, excellent corrosion resistance, and according to the corrosion resistance of medium to choose different pipes. (2) Mechanical strength, resistance to water pressure strength, resistance to external pressure strength and impact strength are good and can be designed and manufactured according to the requirements of the pressure piping and fittings. (3) Strong adaptability to temperature, temperature range of use: more than - 70 - c is less than 250 degrees Celsius, pipe don't crack under freezing medium. (4) Fluid resistance small, pipe wall smooth, rough coefficient of 0.0084, under the same flow rate, pipe diameter can be narrowed.

Seamless Line Pipe

1. Standard: API 5L 2. Excellent to earthquake and directionless horizontal force due to circular section. 3. Easy design as the outer diameter and thickness are various and excellent four direction bending 4. Minimized risk for accident due to powerful bearing force and hardness. 5. Strong resistance against left and right refractive power. 6. For manufacture of mechanical structure, fluid tubes, super heaters of boiler, heat exchangers, condenser, catalytic tubes etc. 7. Material: A/B/X42/X46/X52/X56/X60/X65/X70/X80

Welded Pipe

1. Standard: GB, GB/T 3091-2001, GB/T3091 2. Grade:Q195-Q345, Q195, Q235, Q345 3. Thickness:4 - 10 mm 4. Section Shape: Round 5. Outer Diameter:377 - 508 mm 6. Technique: Cold Rolled 7. Certification: API 8. Surface Treatment: ISO 9. Material: Q195/Q235/Q345/ A/B/X42/X46/X52/X56/X60/X65/X70/X80

Tubing

The material for tubing is the TMCP rolling coils. This makes the pipe uniform microstructure and had little material defects such as stomata, inclusion and so on. This essentially guarantees the intrinsic quality of tubing.

Casing

Our company has a professional management team. The core management staffs all have over 20 years' experience in the steel pipe industry who worked in the well – known iron – steel company in China; they are expert in manufacturing and processing of seamless steel pipe. Our products are widely used in petroleum, chemical, machinery, automobile, pressure vessels, coal chemical industry and natural gas industry.

Stainless Steel Pipe

Stainless steel pipe

is a hollow long round steel, widely used in petroleum, chemical, medical, food, light industry, machinery, instrument, such as industrial pipeline and mechanical structure parts, etc.

Ductile Cast Iron Pipes

1. Certification: ISO9001 2. Range: DN80-2600mm 3. Class: C25/C30/C40//K8/K9 4. Pressure: PN10/PN16/PN25/PN40 5. Joint type: T type/K type/Self-restrained type 6. Material: ductile iron 7. Thread: coarse, fine 8. Suitable medium:  Water, gas , liquid material transfer.

Pipe Fitting

Sizes range from 1/16”to 1 1/2” and 2 mm to 38mm. Precision machined components ensure perfect deformation of the ferrules and tubing. Fittings are easy to disconnect and retighten. Hardened threads with smooth surface finish avoid galling and help to extend the fitting service life. Female nut threads are silver – [lasted to reduce the friction against the body threads. Radius junction design with elbows provides smooth flow path. Every fitting is stamped with size, material, and heat code.

Flexible Elbow

Flexible elbow is a kind of a metal pipe adapter with integral ball bearing. It adopts gold-plated high strength steel with heat treatment to ensure the strength under rated working pressure with long service life.

Flexible elbow

is equipped with steel ball in the hardened orbit which can do flexible rotation.

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Wellhead Equipment Series for Sale

According to the function of the wellhead equipment, they can be divided into oil extraction wellhead, gas extraction wellhead, fracturing wellhead and

water injection wellhead

. With the high quality products and service, our wellhead equipment have been used in more than twenty countries and regions, such as America, Canada, Mexico, Germany, Australia, India, Indonesia, Saudi Arabia, Colombia, Kuwait, Russia, Kazakhstan, and so on.

Specification of our Wellhead Equipment

We have become the audited supplier of CNPC and Sinopec. We have obtained the right to use API monogram for petroleum equipment and past the international quality management system certifications, ISO 9001, ISO 14001, GB/T28001, HSE and so on. We use the high quality products and service to meet the different needs of customers all over the world.

Items of Wellhead Equipment

Wellhead equipment, consisting of casing head, tubing head, casing hanger and Christmas tree, mainly are used to control the pressure of the wellhead and the volume of the oil or gas.

Casing Head: a part for connection between the casing pipe and the equipment.

Tubing head: to support the gravity of the intermediate casing and oil-string casing; to seal the annular space between the layers of casing; to provide connection from tubing head to Christmas tree or other parts of wellhead equipment.

Casing hanger: a component of tubing head

Christmas tree: is installed on top of the wellhead. It can effectively control and adjust the output of the oil and gas.

Hot Wellhead Equipment

Wellhead equipment and Christmas tree are essential for oil and gas exploitation, compassed of casing head, tubing head and Christmas tree, used to connect casing string and tubing string, and seal the annular spaces between all casing at all layers and between pipelines.

Gas Extraction Wellhead

It can be used not only to control wellhead pressure and adjust oil/gas wellhead flow, but also for special operations, such as acid fracturing, water injection and testing, etc.

Fracturing Wellhead

Fracturing tree us designed and manufactured un accordance with API 6A specification. The material complies with requirements of NACE MR0175. Full forging steel

fracturing head

and high pressure union connection can meet the requirements of on – site fracturing equipment connection.

Water Injection Wellhead

With powerful financial strength, advanced managerial concept, excellent marketing service, strict quality control system and the whole scientific method, we would like to develop together with you hand in hand.

Christmas Tree

Wellhead & X-mas tree are important oil and gas exploration equipment, composed by casing head, tubing head, oil(gas) production tree. The main function is to connect casing string, tubing string and seal the annular space between the casing and tubing, and control the wellbore pressure and oil (gas) flow of production well, and it can also be used for fracturing, water injection, testing, and other special operation.

Casing Head

Casing head assembly consists of casing head, casing hanger, by pass valve and other accessories parts. It can meet the requirement of sealing of annular space between casing hanger and casing, and can meet the requirement of casing supporting as well;  it can resist to the corrosion of all kinds of medium.

Tubing Hanger

Tubing hanger is designed with 45° shoulder and straight seat, with good load bearing capacity. Studded flange the side outlet is studded flange type with CR thread, which is convenient for valve changing operation.

Casing Hanger

Casing hangers can be sorted into thread (mandrel) type and slip type. Slip casing hanger includes G type, W type, WD type, WE type and etc.  

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Ball Valve and Globe Valve

Ball Valve

Material: WCB、 WC6 、WC9、A105、 F11、 CF8、 CF8M Working pressure：CLASS150-CLASS1500 Nominal diameter：DN50-DN300 Temperature ：-196℃-650℃ Connection type：flange, weld, thread Suitable medium:  water, oil, gas Ball valve is mainly used to disconnect or connect the medium and can also be used to adjust and control the fluid. V type ball valve can carry out the relatively precise adjustment and control of flow volume, while three–way ball valve is used to dispatch the medium and change the flow direction of the medium. Compared with other types of valves, ball valve has the following advantages: The fluid resistance is small, and ball valve is the one which has the smallest fluid resistance among all types of valves, even the fluid resistance of the necking ball valves is quite small. The process of opening and closing is fast and convenient. As long as the valve stem rotates 90 degrees, the ball valve completes the total opening or closing action, which is easy to realize the fast opening and closing. The structure design of elastic materials has been adopted for floating ball valve sealing ring. However, the structure design of the elastic float valve seat has been adopted for the trunnion mounted ball valve. It can be designed to have the sealing functions, such as fire–proof and anti–static–electricity. Full welding of the ball valve body can be directly in the ground, so that in case the valve from erosion and it is the ideal valve for oil and natural gas pipeline. Globe Valve

1. Material: WCB、 WC6 、WC9、A105、 F11、 CF8、 CF8M 2. Working pressure：CLASS150-CLASS900 3. Nominal diameter：DN50-DN300 4. Temperature ：-196℃-650℃ 5. Connection type：flange , weld, thread 6. Suitable medium:  water, oil, gas The structure of globe valve is simpler than that of gate valve, and both its manufacturing and maintenance are relatively convenient. The seal surface is not easy to wear and gall and has sound sealing performance. When being opened and closed, there is no relative slip between the valve flap and the seal surface of the valve, thus both the wear and gall are not severe and it has sound sealing performance and long service life. When being opened and closed, the travel distance of the valve flap is small, thus the globe valve height is smaller than that of gate valve while the structure length is longer than that of gate valve. When being opened and closed, the force torsion is large and it is laborious to open and close, and the time of opening and closing is relatively long. The fluid resistance is big because the medium channel in the valve is relatively tortuous. The fluid resistance and the power consumption are big. When the nominal pressure of the medium flow direction PN ≦ 16MPa, downstream flowing is usually adopted and the medium flows upward from downward direction of the valve flap; when the nominal pressure PN ≧ 20 MPa, upstream flowing is usually adopted, and the medium flows downward from the upper direction of the valve flap. When being used, the globe valve medium could only flow in a single direction and the flow direction could not be changed. The globe valve stem axis of the valve is perpendicular to the seal surface of valve seat. The opening or closing travel distance of the valve stem is relatively short and also it has the very reliable turning off action which enables this kind of value to be suitable for turning off the medium or functioning as adjustment and throttling.

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Drill Pipe and Drill Collar

Drill Collar

Specification of Drill Collar

Material: Non magnetic steel

Hard band: Arnco200XT ,TCS8000

Standard: API 5DP

RSC Type: NC26 NC31 NC38 NC40 NC46 NC50 NC55 6-5/8FH

UPSET: EU(External upset) IU(Internal upset) IEU(Internal & External upset)

Technical: Hot Rolled

Surface treatment: blank oil painting

Packing: 6/9/12 pieces in a bundle, packed with steel holder

Product features of Drill Collar

Thread type Extranal Diameter Internal Diameter Length(mm)

mm in mm in

NC26-35 88.9 3 1/2 31.8 1 1/2 9150

NC35-47 120.7 4 3/4 50.8 2 9150

NC46-62(4IF) 158.8 6 1/4 71.4 2 13/16 9150/9450

NC46-65(4IF) 165.1 6 1/2 57.2 2 1/4 9150/9450

The Features of Drill Collar

Put pressure on the drill bit

To ensure the necessary strength of compression

To reduce the vibration of the drill bit, swing, and beating, so that the drill work smoothly.

In the process of drilling well deflection control.

Tensile properties as per ASTM A – 370 0.2%  residual deformation specified test bar to configuration.

The site of drill collars tensile test specimen should be smaller size when test specimen is cut longitudinally about 3ft (0.9 m) away the end of drill collar, the test specimen’s central line is 25 mm away surface or the wall thick center.

Hardness test should follow the requirement of current edition ASTM A – 370, adopt Brinell Hardness ( or Rock – well – c replace) test methods in the outer diameter of drill collars.

Usage of Drill Collar

Put pressure on the drill bit

To ensure the necessary strength of compression

To reduce the vibration of the drill bit, swing, and beating, so that the drill work smoothly

In the process of drilling well deflection control

Drill Pipe

Specifications of Drill Pipe

Standard: API 7, API 7-1 and SY/T standards.

Certifications: ISO ,API 7-1

Usage: One of the most important components of the drill pipe is to provide drilling bit of pressure and the drill string rigid role.

dimension in weight 1b/ft external diameter thickness steel grade thickened form buckle type

in mm in mm

2-3/8 6.65 2.375 60.32 0.28 7.11 E.X.G EU NC26(2-3/8 IF)

2-7/8 10.4 2.785 73.02 0.362 9.19 E.X.G.S EU NC31(2-7/8 IF)

3-1/2 13.3 3.5 88.9 0.368 9.35 E.X.G.S EU NC38(3-1/2 IF)

15.5 3.5 88.9 0.449 11.4 E.X.G EU NC38(3-1/2 IF)

15.5 3.5 88.9 0.449 11.4 S EU NC40(4 FH)

Product features of Drill Pipe

Superior – quality green & advanced heat treatment process – high strength & high toughness (especially under low temperature);

Smooth  and long upset transition area & strong hard banding – extended product life;

To meet or exceed requirements of the API 5DP, API 7G, API Q1 & ISO9001;

Equipment with advanced inspection instruments and a strictly enforced quality controlling system, the final products are guaranteed to be of superior and stable quality;

Due to our professional technicians & product flexibility, we are capable of meeting some customer' s specitic requirements.

Drill pipe is the basic part consisting drill column, the main function is deepening well hole, transmit torque and forming drilling liquid circulation passage. Drill pipe is made by steel pipe and tool joints, steel pipe and tool joints are welded together by friction welding. Mechanical properties of steel pipe, tool joints and weld seam meet the requirement of API Spec 5DP. We could manufacture drill pipe according to the requirement of customers.