kelly bushing elevation made in china

Roller Kelly Bushings are designed and manufactured as per API Spec 7K "Drilling and Well Servicing Equipment" for driving Kelly in the drilling operation.

Roller kelly bushings are constructed in upper body half, low body half, rollers, rollers pin and etc., can be available in square drive or pin drive. Square drive roller kelly bushing designed with taper contact surface in low body half, while pin drive roller kelly bushing designed with pin to be installed in low body half.

According to torque of drilling, roller kelly bushing can be available in heavy duty, medium duty and light duty, heavy duty bushings are for high torque and high speed drilling operations while medium duty and light duty are for medium or shadow depth drilling operations.

Roller kelly bushings can accommodate square Kelly or hex Kelly, for square Kelly, the bushing is designed with four flat rollers, and for hex Kelly, the bushing is designed with two V-shaped rollers and two flat rollers. By changing roller size, roller kelly bushing can accommodate square Kelly from 2½" to 5¼" or hex Kelly from 3" to 6", and can be installed in rotary table range from 17½" to 37½".

In the oil and gas industry, depth in a well is the measurement, for any point in that well, of the distance between a reference point or elevation, and that point. It is the most common method of reference for locations in the well, and therefore, in oil industry speech, “depth” also refers to the location itself.

Because wells are not always drilled vertically, there may be two “depths” for every given point in a wellbore: the measured depth (MD) measured along the path of the borehole, and the true vertical depth (TVD), the absolute vertical distance between the datum and the point in the wellbore. In perfectly vertical wells, the TVD equals the MD; otherwise, the TVD is less than the MD measured from the same datum. Common datums used are ground level (GL), drilling rig floor (DF), rotary table (RT), kelly bushing (KB) and mean sea level (MSL). [1]

Kelly Bushing Height (KB):The height of the drilling floor above the ground level. Many wellbore depth measurements are taken from the Kelly Bushing. The Kelly bushing elevation is calculated by adding the ground level to the Kelly bushing height.

The utility model relates to a friction kelly bushing used for the oriented vehicle. The friction kelly bushing comprises a kelly bushing main body (1), wherein an A-shaped groove (2) is arranged on the inner wall of the through hole of the kelly bar of the kelly bushing main body (1), the A-shaped groove (2) deviates from the original design of the center position on the inner wall of the of the through hole of the kelly bar, and a cable groove (4) and an insert plate (3) are arranged in the A-shaped groove (2). The friction kelly bushing cable is not easy to be squeezed, and therefore the time, the labor and the production cost are saved.

On the rig that in the oil drilling construction, uses, the drill with ferrule heart can be given kelly bar with the rotating disk transmission of power on ground, when directed in the past, cable channel is positioned at the center of inwall on the kelly bar through-hole wall, cable is easy to jump out from cable channel, the problem of squeezing bad cable often takes place, if place " A " type plate herein, owing to be subjected to the extruding force of kelly bar bigger, " A " groove is easy to destroyed, cause plate to insert not enter, cable is still jumped out easily by crowded bad, and squeeze bad cable 2-5 average every month, after cable squeezes badly, utilize the plenty of time to connect cable, also waste a large amount of cables sometimes, the cost height of wasting time and energy.

In order to solve the problem in the background technology, the utility model provides a kind of directed car friction master bushing, and this orientation car friction master bushing cable is difficult for being squeezed bad, the time saving and energy saving cost of production of having saved.

The technical solution of the utility model is: this orientation car friction master bushing comprises the master bushing body, the kelly bar through-hole wall of master bushing body has " A " type groove, " A " type groove departs from kelly bar through-hole wall center, in " A " type groove cable channel and plate is arranged.

The utlity model has following beneficial effect: each position force analysis when originally novel process is to crowded bad cable reason and orientation; cable channel is moved to the side; kelly bar is little to the side extruding force; effectively protect " A " type groove and cable; make cable prolong the time saving and energy saving cost of production of having saved application life.Have plate in " A " type groove simultaneously, prevent that like this cable from jumping out in cable " A " type groove, plate upper end inflection 90 degree, be stuck in the master bushing body above, prevent that plate from skidding off, it is quite convenient to insert simultaneously and take out.By using many mouthfuls of wells, effect is very obvious.

The utility model is described in further detail below in conjunction with accompanying drawing: as shown in the drawing; this orientation car friction master bushing comprises master bushing body 1; the kelly bar through-hole wall of master bushing body 1 has " A " type groove 2; " A " type groove 2 departs from kelly bar through-hole wall center; depart from the stressed little effective protection cable in center; in " A " type groove 2 cable channel 4 and plate 3 are arranged, plate 3 prevents that cable from jumping out in cable " A " type groove 2.This novel friction master bushing is by using many mouthfuls of wells, and effect is very obvious.The time saving and energy saving cost of production of having saved.

1. friction master bushing that directed car uses, comprise master bushing body (1), it is characterized in that: the kelly bar through-hole wall of master bushing body (1) has " A " type groove (2), " A " type groove (2) departs from kelly bar through-hole wall center, and cable channel (4) and plate (3) are arranged in " A " type groove (2).

Rig workers were in the process of changing out a saver sub, which is a section of pipe positioned between the Kelly and pipe. At this time, the depth of the hole was 11,908.2 ft. During the process of adding a section of pipe the evening tower crew dropped the pipe string about six feet. After picking up the pipe string and setting the Kelly, drilling commenced for approximately 100 feet. Because the pipe string was dropped, the decision was made to trip the hole and check the "bottom-hole assembly" bit and mud motor. After tripping to 4,289.8 ft, the chain on the input sprocket for the draw works became loose breaking teeth on the sprocket and shutting down the operation. The sprocket had to be replaced before drilling operations could continue. With the sprocket replaced, the Pusher was on the brake handle and picked up on the slips to see if the pipe would move. It would not. He estimated the down-hole string weight was approximately 150,000 pounds. They could pull up to 70 percent of the string weight. The rotary transmission was placed in low, low/forward, with the table rotating in a clockwise direction. They picked up the pipe string and pulled to 220,000 pounds, rotating the rotary clockwise while attempting to drill through the stuck position. This procedure was not only stretching the drill pipe but also twisting and coiling it as well. The attempt to drill through the stuck position was not successful. The crew had the pipe string in the slips and then rotated (counter-clockwise) untwisting the pipe string. The Pusher picked up on the Kelly to change the saver sub that had pulled threads from the previous hole. Once the new sub was placed in the pipe string, Employee #1, the driller, went into the doghouse to get the chain tongs. The chain tong was fitted with a 37-in. handle and is designed to grip pipe in either direction. Returning to the drill floor, Employee #1 placed the chain tong on the saver sub to tighten it up. The assistant driller raised the Kelly approximately 3-in. to 4-in. above the saver sub, to make it easier to tighten the sub to the pipe string. When Employee #1 began to tighten the saver sub to the pipe string, the pipe string began to uncoil (counter-clockwise) at a very high rate of speed. While Employee #1 was holding onto the handle of the chain tong, he was lifted from the drill floor and forced backwards into the draw works causing him to loose his grip on the handle. Employee #1 began falling to the drill floor. As the pipe was uncoiling, the handle on the chain tong struck Employee #1 several times to the body and head before reaching the drill floor. Employee #1 was transported to the hospital where he died.

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.

The global kelly drive market was valued at $1.6 billion in 2021, and is projected to reach $2.3 billion by 2031, growing at a CAGR of 3.7% from 2022 to 2031.

Report Key HighlightersThe kelly drive market is consolidated in nature with few players such as NOV Inc., SANY Group, BAUER Maschinen GmbH (Subsidiary of BAUER Group), Jereh Global Development LLC (As a Subsidiary of Jareh Group) and Liebherr-International Deutschland GmbH. that hold significant share of the market.

The study covers in-depth analysis of 16 countries from different regions including North America, Europe, Asia-Pacific, and LAMEA. In addition, country-wise data of every country has been provided for better understanding of kelly drive market dynamics in every country.

A kelly drive is a particular kind of well drilling tool which uses a section of pipe with a polygonal or splined outer surface and feeds it through a rotary table and matching kelly (mating) bushing which have the same shape or splines. The Kelly is a long, four- or six-sided steel bar having a hole bored through the center to allow drilling fluid to pass through. The kelly bushing allows the drill string to be lifted or lowered while it rotates by transferring rotating motion from the rotary table or kelly bushing to the drill string. Crewmembers make up several attachments to the kelly. The attachments include the upper kelly cock, the lower kelly cock (drill pipe safety valve), and the kelly saver sub.

Kelly drilling is one of the most used dry rotary drilling techniques. The kelly drive is used to create large-diameter bored piles (from a size of approx. 500 mm). With the increasing drilling activities is booting the kelly drive market share in coming year. The kelly drive works with almost any kind of rock and soil. According to kelly drive market forecast, the demand for short rotary drilling instruments, such as augers, core barrels, buckets, and specialized drilling tools which are used to move the dirt will be more in the market. The drill rod which is also known as a kelly bar, is a typical component of this drilling technique. The strong kelly bars enables deep drilling and help in boosting the kelly drive market trend in forecast period.

Globally, there has been a surge in oil exploration activity, which is driving the demand for kelly drive in rig and drilling industry. Apart from the pandemic time, a boom in exploration has tripled over the last five years. Kelly drive market analysis showcase the owing to a global boom in exploration of oil reserves, several oil companies are getting into the rig sector. With the ongoing expansion in petroleum products, large oil extraction companies are contracting with drilling equipment manufacturers for the rent and sale of drilling equipment. Oil exploration companies and equipment companies collaborate to provide offshore support services that can increase production. Factor such as oil exploration activities is likely to boost the market for kelly drive in near future.

Advances in technology and equipment have enabled more oil and natural gas to be recovered from the length of each well, improving production and reducing the environmental footprint of energy production. Kelly drive is cheaper however, technology is slow, inefficient, and unsafe as compared to the other technology which are present or coming in the market. These factors may restrain customers from using kelly drive; thus, hampering the market growth.

With combination of seismic surveys and drilling wells, companies are doing the search of oil reserve and deposits beneath the surface of the earth. Exploration projects can be expensive, time-consuming, and risky, drilling a well may cost tens of millions of dollars. Several factors are considered the number of wells to be drilled, recovery method, type of installation to be used, separation systems for the gas & fluids, and how the oil and gas will be transported to a processing facility. High demand for the petroleum products in the market resulting into several new excavations projects in different regions. This factor is anticipated to increase the sales of kelly drive; thus, creating lucrative kelly drive market opportunities.

The kelly drive market is segmented into product type, and region. On the basis of product type, the market is bifurcated into cleaners, braking oil, grease and lubes, degreaser, and others. Region-wise, the market is studied across North America, Europe, Asia-Pacific, and LAMEA.

In 2021, the square kelly segment was the largest revenue generator, and is anticipated to grow at a CAGR of 3.6% during the forecast period. With the increasing horizontal drilling operations result in increasing demand for square kelly in the market. To increase the output from a single well, drilling square kelly equipment are being used frequently in the market. Square Kelly is advantageous for end-users, however equipment can be used for both onshore and offshore drilling operations. Drilling activities are becoming more challenging which are demanding the high quality of kelly equipment. Several oil firms engage in new types of drilling on land, such as horizontal well drilling which covers a significantly larger area under the earth. With the increasing horizontal well drilling creates the opportunity for square kelly segment in global kelly drive market.

In 2021, the kelly bar segment was the largest revenue generator, and is anticipated to grow at a CAGR of 4.0% during the forecast period. With the increasing number of excavation projects and finding of deep oil reserves will increase the demand for kelly bars in the market. Companies are entering into the agreement for the drilling operations which is driving the kelly bars market. Today, reserves are found very deep under the land of sea which require the high strength bars for handling the pressure. Vertical and horizontal drilling activities are increasing which is increasing the demand for different shapes of kelly bars.

The North America kelly drive market size is projected to grow at the highest CAGR during the forecast period. The region is experiencing more drilling activities of oil and gas extraction as the demand for oil-related goods rises worldwide. Kelly drive equipment is particularly helpful for drilling through hard rock and getting to the oil deposits. The Kelly Drive can be used to reduce operational expenses in drilling operations. For field operators and engineers, it ensures long-term project success and a high rate of return.

LAMEA was the second-largest contributor in terms of revenue in the global kelly drive market in 2021, and is anticipated to grow at a CAGR of 3.8% during the forecast period. Accelerated investment across the upstream sector along with crude oil price recovery will foster the drilling activities in the region. Robust growth in petrochemical products demand along with increase in industrial and commercial activities across the developing economies will boost the kelly drive market growth in LAMEA region.

The leading players operating in the global kelly drive market include, NOV Inc., SANY Group, BAUER Maschinen GmbH (Subsidiary of BAUER Group), Jereh Global Development LLC (As a Subsidiary of Jareh Group) and Liebherr-International Deutschland GmbH, Bridges Equipment LTD, Lake Petro., TEXAS INTERNATIONAL OILFIELD TOOLS, LTD, Goldman, Tianhe Oil Group Co. Ltd., XI"AN KINGWELL OILFIELD MACHINERY CO.,LTD, El Didi Group.

It outlines the current Kelly drive market trends and future estimations from 2021 to 2031 to understand the prevailing opportunities and potential investment pockets.

The invasion of Russia has further worsened an already precarious scenario for the energy and drilling markets, notably in Europe. To minimize the possibility of an interruption in Russian oil and gas supply, oil and gas corporations must collaborate with governments. In longer term, the sector needs to increase its adaptability and relevance in a rapidly evolving energy environment. The scenario brought about by the conflict between Russia and Ukraine influences the Kelly Drive market as well. Many projects that were previously underway in the nations are now on hold, and new projects are being delayed, which has slowed the market"s expansion in recent years.

When the well is spudded, reference is taken at wellhead usually Rotary Table Kelly Bushing (RTKB) or Below Kelly Bushing (BKB) to ensure what depth drill string is reached one should guess if reference is not taken how it will be known that where is the desired depth to stop the drilling further or where is the depth of perforation, the operator will stop drilling before the total depth or the perforations will be made few meters above the payzone therefore with the help of reference the distance of wellhead equipment is also counted with the depth of drillstring and this way engineer can meet the target.

Alibaba.com offers 166 kelly bearing products. such as construction works , machinery repair shops, and energy & mining. You can also choose from 1 year, 6 months, and 3 months. As well as from provided. And whether kelly bearing is united states, thailand, or indonesia.