kelly bushing drilling factory

As ARK Drilling our machine are avaible for both Mud and Air Drilling operations. Mud operations with Mud Pumps and Air Drilling operations with high pressure compressors. Our rigs hose lines desinged for high pressure of water&mud and air.

These 2 important is very important for drilling rig owner. After years when your machine needs maintenance you wont need our factory send you parts for maintenance. If you will have any trouble while drilling you will able to solve your problem easly finding spare parts at your local market and changing parts will be not complicated as Hydraulic system top drive drilling rigs.

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.

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.

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.

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.

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.

Supplying drill rig replacement parts has been the specialty of Drilling Supply and Manufacturing (DSM) since it first opened its doors in 1977. Today, it is not only known as a supplier of essential replacement parts, it is also known as a drill rig manufacturer and rebuilder.

In 1977, Young came to Austin to join forces with Palmer and Stanley Martin (father and son) to form DSM. Ken had been a partner and manager of the Midway Supply & Manufacturing in Odessa, Texas, (the manufacturer of Midway Drill Rigs) until he sold out in 1974. As a condition of the sale, he remained with Midway for three years after the change in ownership. At this point in his life, Ken considered a number of options in the drilling business before moving to Austin and forming a partnership with the Martin’s.

Palmer Martin began his career in the drilling business in 1945 and opened his own machine shop, Martin Machine Corp., in 1963. From 1963 to 1977, Palmer manufactured parts for Midway Supply & Manufacturing, where he dealt with Ken Young. Palmer’s son, Stanley Martin, began helping out at the family machine shop at the age of 13 and is today the general shop manager and consulting engineer for the company. “Designing drill rig parts and components is not an easy task, “Stanley notes.

“We do a lot of drill collar and cross-over sub work, too,” Ken says. “We make most of the parts right here in our own shop using special lathes and equipment. We make all of our own kelly bushing and slips. We have our own sand-casting molds, but have the casting done outside.”

Rig #21 has a 17 foot (5.2 m) Kelly Bushing Height (KB) and is outfitted with an 800 Bbl steel pit system that is equipped with dual shaker technology as well as 1,000 GPM mud cleaning capabilities. This rig can be outfitted with up to two 1,005 hp triplex pumps with 5,000# fluid ends. Rig #21 has handling equipment for slim hole and regular hole drill strings. It is outfitted with a full stack blowout preventer (BOP) and can also utilize a rotating head if requested.

In an effort to make oil and gas production (as well as other industries) carbon-negative , the demand for deeper drilling technology is on the rise to pump and store carbon dioxide (CO2) below ground. This technology is called Carbon Capture Sequestration (CCS).

• 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.

CONTENTS Introduction How does Kelly Bushing work? Fixing (Engagement) of the kelly drive bushing Types of Kelly bushing Kelly bushing design Maintenance

Introduction Kelly drive bushing is advise that is fitted to the rotary table and which the Kelly passes The Kelly bushing has inside diameter profile that matches that of the Kelly , usually square or hexagonal Depth measurements are commonly referenced to the KB,

How does kelly bushing work? 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 drill string because it is screwed into the top of the drill string itself.

B) By a square on the bottom of the Kelly drive bushing fitting into the corresponding square recess of the master bushing The result of this engagement is that when the rotary turns the Kelly and the Kelly bushing turns the entire drill string

Types of Kelly bushing Three types of Kelly bushing are available: Heavy, Medium, light-duty Heavy duty Kelly Bushing This unit is used for heavy duty drilling operations and high torque conditions on off shore as well as on shore drilling operations. Medium duty Kelly Bushing Designed for shallow to medium depth applications. Light duty Kelly bushing designed for shallow, slim hole drilling and workover rig applications

ROLLER KELLY BUSHING Model 27 HDS 27 HDP 20 HDP RTM4 Medium Type Heavy Drive style Square Pin Pin Square 20 1/2 MSPC and MDSP 17 1/2 MSPC and MDSP 17 - 27 1/2 inch Master Bushing 23 - 49 1/2 Inch 23 - 491/2 Inch 20 - 22 1/2 inch Square Kelly size 3 - 6 3 - 6 3 - 6 2 - 5 1/4 Hex Kelly size 3 - 6 3 - 6 3 - 6 3 - 4 1/4

Kelly bushing design The Kelly drive bushing is equipped with rollers that permit the Kelly to move freely upward or down word either when the rotary is turning or when it is stationary

The Kelly bushing may be designed to fit either shape of Kellys (square hexagonal triangular ) or it may be designed to accommodate either shape by changing rollers to fit The Kelly bushing may have an optional lock assembly that locks it into the master bushing , that is especially useful for use with motion compensators offshore

Maintenance1. Lubrication to reduce wear is the most important aspect of maintenance , it is done with a grease gun , it can be done each tour or each day but must not be neglected 2. Keep top nut tight to keep roller pins from working in the body journal area 3. The bushing regardless of its design type , must be inspected regularly for wear 4. Parts can be removed and replaced right on the rig floor by the floor crew under the supervision of the driller

Kelly bushing is that elevated device positioned right on top of the rotary table and used to transmit torque from the rotary table to the kelly. The kelly bushing is designed to be the connection between the rotary table and the kelly. The kelly is a 4 or 6 sided steel pipe.

The purpose of the rotary table is to generate the rotary action (torque) and power necessary to rotate the drillstring and drill a well. The torque generated by the rotary table is useless if it is not transferred to the kelly (the drillstring is connected to the kelly).

Hence, through the kelly bushing the torque generated at the rotary table is transferred to the kelly. To achieve this connection, the inside profile of the kelly bushing matches the outer profile of the kelly so that the kelly fits or “sits” comfortably in the kelly bushing.

There are various designs for the kelly bushing including the split type, the pin-drive type and the square-drive type. Each of these designs has different ways in which they are connected and disconnected from the rotary table.

The internal diameter of the kelly bushing can be cut into the shape of a square (4-sided) or a hexagon (6-sided) depending on the outer shape of the kelly that will be used. The internals of a Kelly bushing is designed to resemble the outer shape of a Kelly just like the insides of a key lock is cut to exactly match the outer shape of the key.

The kelly bushing is not designed to hold tightly onto the Kelly; the kelly is still permitted to move up and down through the kelly bushing. This requirement is a must since drilling cannot progress if the kelly remains on a fixed spot. As the well is drilled deeper, the kelly also moves downward through the Kelly bushing.

The kelly bushing is sometimes used as a reference point from which depth measurements can be taken. All depths must be recorded with respect to a reference point; the kelly bushing (KB) is one of the depth references used in the oil and gas industry.

The top of the kelly bushing is normally used as the depth reference.For example, 7500ft KB means 7500ft below the kelly bushing or 7500ft measured from the top of the kelly bushing down to that point in the well.

In some other cases, depths could be recorded as 7500ft MDBKB meaning 7500ft measured depth below the kelly bushing. This is mostly used when the measured depth is different from the true vertical depth of the well, common with deviated and horizontal wells.