rig kelly bushing made in china

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Chengdu Zhonghang Machinery Co., Ltd( brand: tiger rig) was established in 2005 year, and reformed into a private enterprise in 1990.The company lies in Xindu town, Chengdu City, which is the most vigorous, and most potential city at the west of China. Tiger rig devoted itself to the research on the wellhead tools, and the great-leap-forward development. Drill pipe power tong designed and manufactured by the company is a necessary and symbolic tool for mechanized wellhead operation; a batch of automation wellhead tools represented by Iron roughneck developed in recent years creates the new era for drilling machines on the wellhead. The company is a specialization company with longest history, complete varieties, and strongest capacity for developing and researching wellhead tools and equipment. At present, the company has formed more than 50 series and more than 100 specs of products, which have been widely used in all oilfields in China, and have been export to Europe, America, Southeast Asia, the Middle East, Central Asia, North Africa and other regions.

We can supply wellhead product as such drilling pipe power tong, casing power tong, hydraulic power tong, air winch, hydraulic cathead, rotary cathead, casing guide, deadline anchor, Kelly bushing, master bushing, Kelly or swivel spinner, casing tubing coupling bucking unit, Elevator, Spinners, slip ,clamp and so on.

Our company owns reliable quality administration system, and has obtained ISO9001,ISC14001, GB/T28001, GOST and API Q1 certificates. Our products have been grant the right to use the Official Monogram of API Spec 7K and API Spec 8C.

Adhering to the "people-oriented, technology leadership, honest and quality excellent, win-win cooperation, the customer first" business idea, and carefully creating "tiger rig" brands. Firmly aimed at the international advanced technology and management philosophy for petroleum machinery. We will make our efforts to supply the best surface operation tools and the drilling and producing equipment for the oilfields in China and the world.

Start shopping at Alibaba.com to discover wholesale rotary kelly bushing at incredible prices.Browse through rotary kelly bushing for any type of vehicle.Bearings can be produced from a broad variety of materials, such as different steel, rubber, plastic, brass, and ceramic. These materials, each having their own benefits that render them appropriate to specific operations, including noise level, mass, weight, capacity, and resistance, and a series of options to match your individual needs and requirements.

This particular type of rolling component has had a lengthy lifespan, originally made popular in bicycles then, automobiles. It decreases spinning rubbing while withstanding axial and radial loads and has the potential to be used across a broad spectrum of different industries, of which aerospace, agricultural and machinery, wagons and other automobiles, skateboards, and of course fidget spinners!

However, getting a bushing that is properly functioning is critical to a comfortable and smooth ride, as they maintain the car in good conditions. We have variously available bushings including, grounding bushing, polyurethane bushings, energy suspension bushings, brass bushings, and even drill bushings.Buy our selection of rotary kelly bushing now. For those of you who are looking for quality wholesale rotary kelly bushing at a bargain price, well then you should look no further! At Alibaba.com, you may find a great array of quality automotive accessories and everything at an awesome price.

Roller Kelly Bushings can be classed as two types based on different ways of drive, square drive and pin drive. Also they can be classed as three types based on different style, heavy, medium and light-duty. They are used for 17.1/2 to 49.1/2inch rotary tables. They are designed and manufactured according to API Spec 7K.

An adapter that serves to connect the rotary table to the kelly. The kelly bushing has an inside diameter profile that matches that of the kelly, usually square or hexagonal. It is connected to the rotary table by four large steel pins that fit into mating holes in the rotary table. The rotary motion from the rotary table is transmitted to the bushing through the pins, and then to the kelly itself through the square or hexagonal flat surfaces between the kelly and the kelly bushing. The kelly then turns the entire drillstring because it is screwed into the top of the drillstring itself. Depth measurements are commonly referenced to the KB, such as 8327 ft KB, meaning 8327 feet below the kelly bushing.

A pit in the ground to provide additional height between the rig floor and the well head to accommodate the installation of blowout preventers, ratholes, mouseholes, and so forth. It also collects drainage water and other fluids for disposal.†

A small enclosure on the rig floor used as an office for the driller or as a storehouse for small objects. Also, any small building used as an office or for storage.†

The hoisting mechanism on a drilling rig. It is essentially a large winch that spools off or takes in the drilling line and thus raises or lowers the drill stem and bit.†

On diesel electric rigs, powerful diesel engines drive large electric generators. The generators produce electricity that flows through cables to electric switches and control equipment enclosed in a control cabinet or panel. Electricity is fed to electric motors via the panel.†

A device fitted to the rotary table through which the kelly passes. It is the means by which the torque of the rotary table is transmitted to the kelly and to the drill stem. Also called the drive bushing.†

Shallow bores under the rig floor, usually lined with pipe, in which joints of drill pipe are temporarily suspended for later connection to the drill string.†

A diesel, Liquefied Petroleum Gas (LPG), natural gas, or gasoline engine, along with a mechanical transmission and generator for producing power for the drilling rig. Newer rigs use electric generators to power electric motors on the other parts of the rig.†

A hole in the rig floor 30 to 35 feet deep, lined with casing that projects above the floor. The kelly is placed in the rathole when hoisting operations are in progress.†

Shallow bores under the rig floor, usually lined with pipe, in which joints of drill pipe are temporarily suspended for later connection to the drill string.†

The hose on a rotary drilling rig that conducts the drilling fluid from the mud pump and standpipe to the swivel and kelly; also called the mud hose or the kelly hose.†

The principal component of a rotary, or rotary machine, used to turn the drill stem and support the drilling assembly. It has a beveled gear arrangement to create the rotational motion and an opening into which bushings are fitted to drive and support the drilling assembly.

Wedge-shaped pieces of metal with teeth or other gripping elements that are used to prevent pipe from slipping down into the hole or to hold pipe in place. Rotary slips fit around the drill pipe and wedge against the master bushing to support the pipe. Power slips are pneumatically or hydraulically actuated devices that allow the crew to dispense with the manual handling of slips when making a connection. Packers and other down hole equipment are secured in position by slips that engage the pipe by action directed at the surface.†

The top drive rotates the drill string end bit without the use of a kelly and rotary table. The top drive is operated from a control console on the rig floor.†

The roller kelly bushing is formed by cutting and forging hexagon bar. These bushings with different thread types are also available. The material is high-quality alloy steel with heat treatment. And there are two types, pin drive and square drive. As a threaded fitting, the roller kelly bushing is used to connect pipelines with different bores. This tool plays an irreplaceable role in the pipeline connection. In China, bushings are usually known as hexagonal nipples with inside and outside threaded.

When a different caliber is needed in the water pipe, for example, the caliber of DN15 water pipe is changed to DN20, roller kelly bushing is a must. The threaded outside of DN15 water pipe is connected to the threaded inside of bushing; the threaded inside of DN20 is joint with threaded outside of bushing. However, if DN20 water pipe is with a threaded outside, we can use a short connector with a threaded inside between DN20 pipe and bushing. Threaded connection is very convenient for any water instrument and valve. Therefore, the application of the roller kelly bushing to change calibers is very common both in industry and life.

As a professional China roller kelly bushing manufacturer and supplier, Jiangsu Kayson Petrol- Machinery Co., Ltd possesses strong technical force, excellent production equipments and complete test facilities. After several years of research and innovation, we"ve now formed many product series like: bushings, bottleneck elevator, manual tongs, spiders, slips, inserts and bit breakers.

Jiangsu Xinxiang share Co., Ltd was founded in 1994, its predecessor was established in 1955, it‘s located in high-tech industrial concentration zone of Nantong City, Jiangsu Province; near to a new developing international deep-water port Yangkou Port which commitment to ship 200,000 tons goods; world famous modern city Shanghai is only 2.5 hours away from it by car; company registered capital is 60,000,000 RMB, the total assets is 119.85 million RMB, it covers an area of 160,000 square meters and currently over 500 employees. Jiangsu Xinxiang Share Co., Ltd is "self-import and export enterprise", "private technology enterprises in Jiangsu Province", "high-tech enterprises in Jiangsu Province", it is top ten companies of the first national large and medium-sized industrial enterprises in independent innovation capacity of the industry; it accessed to API7, 7K, 8A, 8C, and has the right to use the logo, and also passed the ISO9001:2000 quality system certification in the earlier stage within the same industry.

Kelly is a kind of drill rod in the shape of a six-sided square cross section. It is made of AISI 4145H alloy steel in accordance with the specification of API and SY/ T 6509 standard. The raw material is conducted integrate heat treatment to achieve the excellent thermal performance. With concern to its thread, it is treated with cold rolling, copper plating and phosphating.

Kelly is at the top of the drill string, performing the function of drive. In the rotary table drilling rig, kelly can cooperate with the kelly bushing and rotary table to transfer the rotary torque to the drill rod and the drill rod in return makes the drill bit rotate. Meanwhile, the kelly should also bear the hanging weight of the drill string.

This HXY-5A spindle type core drilling rig incorporates the advantages and characteristics of various core drilling rigs home and abroad. It is a kind of hydraulic-driven, spindle, diamond-bit, and small-diameter core drill rig with fairly powerful drilling force.

The HXY-9 spindle type core drilling rig is compact in construction and rational in overall arrangement. It is light and convenient to assemble. And the range of rotary speed is sound. It is equipped with water brake and has a normal-open cultch mechanism. The hoist of the drilling rig can be operat...

The kelly is a primary link between the drilling rig’s surface equipment and the bit, and is therefore a critical component of the rotary system. Although top drive systems have replaced kelly/rotary table combinations on many rigs, some knowledge of their manufacture and operation is useful.

Their angled surfaces, or drive flats, are designed to fit into a drive roller assembly on the kelly bushing, so that as the rotary table turns to the right, the kelly turns with it. To allow for normal right-hand rotation of the drill string, kellys have right-hand threads on their bottom connections and left-hand threads on their top connections.

The American Petroleum Institute has established manufacturing and design standards for kellys, and has included them in the follwoing publications:API RP 7G, Recommended Practice for Drill Stem Design and Operating Limits.

For a kelly to be efficient in turning the drill string, the clearance between its drive flat surfaces and the rollers in the kelly bushing must be kept to a minimum. Kellys most often wear out due to a rounding-off of the drive corners, as shown in Figure 1 (new kelly with new drive assembly) and Figure 2 (worn kelly with worn drive assembly).

For minimal rounding, there must be a close fit between the kelly and the roller assembly, with the rollers fitting the largest spot on the kelly flats. Manufacturing techniques and rig operating practices play important roles in determining this fit.

Both square and hexagonal kellys are manufactured either from bars with an “as-forged” drive section, or from bars with fully-machined drive sections. Forged kellys are cheaper to manufacture. But machined kellys tend to last longer because:Unlike forged kellys, machined kellys are not subject to the metallurgical process of decarburization, which leaves a relatively soft layer of material on the drive surface that can accelerate the rounding process and increase the potential for fatigue cracks;

To minimize rounding, rig personnel should follow these guidelines (Brinegar, 1977):Always use new drive-bushing roller assemblies to break in a new kelly.

Frequently inspect and periodically replace drive assemblies to ensure that clearance and contact angle between the kelly and the rollers is held to a minimum;

Fatigue failures are seldom a problem with kellys because of the high-quality steels used in their manufacture. Nevertheless, kellys should be regularly inspected for cracks and other signs of wear, particularly within the threaded connections, in the areas where the flats join the upper and lower upsets and in the center of the drive section.

In general, the stress level for a given tensile load is less in the drive section of a hexagonal kelly than in the drive section of a square kelly of comparable size. Hexagonal kellys are thus likely to last longer than square kellys before failing under a given bending load.

Kellys can become crooked or bent due to improper handling. Examples of mishandling include dropping the kelly, misaligning it in the rathole and thereby exerting a side pull, using poor tie-down practices during rig moves, not using the kelly scabbard and improper loading or unloading techniques. Depending on where a bend is located, it may cause fatigue damage not only to the kelly but to the rest of the drill string, and can also result in uneven wear on the kelly bushing.

Unusual side motions or swaying of the swivel are good indicators of a crooked kelly. A good field service shop has equipment for straightening bent kellys, making this an easily-corrected problem.

A kelly saver subshould always be run between the kelly and the top joint of drill pipe. This protects the kelly’s lower connection threads from wear, as joints of drill pipe are continually made up and broken out. A saver sub is much less expensive and much easier to replace than the kelly itself, and it can also be equipped with a rubber protector to help keep the kelly centralized and to protect the top joint of casing against wear.

A kelly cock is a valve installed above or below the kelly, which prevents fluid from escaping through the drill string if the well should begin to flow or “kick.” As an extra well control precaution, an upper kelly cock (having left-hand threads) should be installed directly above the kelly, while a lower kelly cock (having right-hand threads) should be installed below the kelly. Installing two kelly cocks ensures that at least one of them is always accessible, regardless of the kelly’s position.

Automatic check valves, designed to close when the mud pumps are shut off, are also available, and can be installed below the kelly to prevent mud from spilling onto the rig floor during connections.

• Kelly is manufactured strictly according to API Spec7-1 standard. Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with aBrinell hardness range of 285-341 and a minimum average Charpy impact value of 40 ft-lbs.