kelly bushing drilling brands

Distributor and manufacturer of new and rebuilt oilfield drilling equipment & supplies including mud pumps and parts. Drilling equipment includes swivels, mud pumps, rotary table & draw works. Drilling supplies include tongs, roller chains, valves, drive bushings & rotary heads. Mud pump supplies include duplex & triplex liners & piston & pony rods. Pump parts include crossheads, slides & cranks. Catheads, washpipes, bearings, union pipes, pump heads, pipe nipples, crankshafts, roller chain sprockets & chain & pump drives are available. Capabilities include contractors" equipment repairing services. Drilling equipment & supplies are used in oilrigs.

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.

P/F PIN DRIVE ROLLER KELLY BUSHING INTERCHANGEABLE WITH TYPE 27HDP HEAVY DUTY FOR 3 1/2", 5", 5 1/4", 6" HEXAGONAL KELLY REF : ALL MANUFACTURERS AS 27 HDP TYPE WITH API 7K MONOGRAM ROLLER ASSY. COMPLETE FOR 5-1/4" HEX

The JOTKB MODEL 27 PDHD OR 20 PDHD are developed for pin drive master bushing for rotary table sizes from 27-1/2" to 49-1/2" having 25-3/4" and 23" dia pin center. This unit is used for heavy duty drilling operations and high torque conditions on off shore as well as on shore drilling operations, and handle Kelly sizes from 3" to 6" Square or Hexagonal.

The NOV CUL & CB Casing Bushings are inserted directly into the rotary table and insure that the casing being run is perfectly aligned with the center of the hole. Model CU is a solid bushing and model CB is a split bushing. All of the bushings accept bowls of different sizes to accommodate a wide range of casing. Using CMS-XL or CP-S slips, since these bushings fit into the rotary table, the casing string can be easily rotated during cementing operations.

B.Roller Kelly bushing can be square drive or pin drive, and can be applicable for rotary table size from 17½ to 37½. By changing roller sizes, the bushing can accommodate square kellys from 2½ to 5¼ or hex kellys from 3 to 6. Roller Kelly bushing has three series: SD(light duty), MD(medium duty) and HD(heavy duty).

Square drive Roller Kelly bushing consists of lower body half, upper body half, roller, roller pin and etc. when the bushing is installed to square kelly or hex kelly, the square part of the lower body half can be fitted in the square of the master bushing. When operating, the rotary table drive master bushing and master bushing drive Roller Kelly bushing and Roller Kelly bushing drive square kelly or hex Kelly to rotate, such is the torque transporting. The lower body half is conically shaped to readily enter the bore of the master bushing and automatically center bushing and drill string within the bore of the master bushing. Inside rollers are journal bearings which are fitted to the roller pin, when kelly rotates and moves downward, the rollers rotates with Kelly, such change sliding friction to rolling friction and minimize the abrasion of the kelly. The bushing is equipped with mud-scrapper assembly to clean the mud.

Just like no two people are alike, neither are two wells. It doesn’t matter if the wells are located in the same area, utilize the same equipment, or if they are drilled into with the same oil-bearing formation; the outcomes of the drilling procedure relies on a wide variety of variables. This can include: people, equipment, company procedures, and more; and in order to be a successful lease pumper, you will need to understand these eight important areas.

Every signed oil well drilling contract includes some form of conditions and agreements. For example, the drilling rig contractor will agree to a specific drilling depth, financial obligations, or where the well will be drilled. Once everything has been agreed upon, the drilling rig will be moved in to prepare for drilling. This is most commonly referred to as the MIRU, or the “Move In and Rig Up”; and in most cases, will include drilling with a jackknife rig instead of the derricks that are built in place. Other important personnel often comprise of:

Typically the company representative is one of the senior members of the crew (such as the tool pusher), the owner of the company (this generally occurs in small oil companies.), or another official representative for the company. Since the company pays the full cost of drilling and owns the new well once completed, the company representative will oversea every operational aspect from building roads to installation of the wellhead. In many cases, the company representative also makes the final decisions regarding the formation tests.

Commonly referred to as the derrick man, a derrick worker cannot be afraid of heights. This position requires working high above the floor, and is used during regular operations to help when the pipe is being pulled or run. In many of the modern rigs, a rack will vertically hold various sections of drill pipe along the side of the derrick. Each is then added to the drilling string as the bit makes it way deeper and deeper into the ground.

One of the common duties of derrick workers is to add (or remove) sections of pipe from the drill string. During drilling, the pipe is added the deeper into the ground they drill; while sections are removed from the drill string and pulled out of the ground once the drilling has been complete. Sections of pipe are also removed for replacement, or to deal with any drilling issues.

In a five person rig crew, the fifth individual is commonly referred to as the motor worker (also known as the motor man). The motor man is one of the most experienced workers, and will often relieve the driller during times off. He/she may also be required to catch drilling samples.

Every drilling company provides a supervisor for the rig during the drilling of the well. While more and more crews have taken on titles like drilling engineer, production engineer, or other comparable titles; at one point in time, this individual was only referred to as the tool pusher.

The tool pusher is in charge of both the drilling rig, and every moving part on that rig. It is their job to purchase and rig supplies, supervise the rig personnel, and to oversea all the drilling procedures. Due to today’s technological advances making communicating easier, tool pushers may also be in charge of more than one rig at a time; and therefore, may not always be present at a specific location. Due to the vital importance of having this type of supervision required for around-the-clock drilling operations, the tool pusher is often supplied some sort of small domicile (ex. small mobile home) at the well site. This allows them the ability to remain onsite for days at a time in the event any problems arise.

While the rig is moved onto the lease for drilling a new well, a lease pumper can often be required to handle operation related duties. For example, most drilling rigs utilize anywhere from two to four steel mud pits. These pits (generally lined with some form of plastic liner) are used to hold any excess fluids or drilling cuttings; with the first pit will have a shale shaker built on the top to permit the drilling mud to fall through the screen.

During drilling operations, lease pumpers are often responsible for looking out for the landowner’s interests, especially for contracted drilling. This includes making sure the mud pit is properly fenced. Otherwise, the livestock could try to get into the pit to drink the water, or eat any trash or greasy rags left behind.  However, due to the fact mud pits can take several weeks or even months to dry out enough to be leveled out; this duty doesn’t end once the hole is finished. In fact, after the rig is no longer active, the landowner will still anticipate the lease pumper to preserve a clean and well-fenced pit to protect their livestock from harm.

As the crew drills the well, the distances are calculated starting from the top of kelly bushing (refers to the sliding bushing located on the drilling rig floor on top of the rotary table that permits the drill kelly  to go down through it when the pipe is turning and the hole is drilled.

Once the casing pipe is permanently cemented into the hole (or set) and either the braiden head or wellhead installed, the measurements from the top of the wellhead to the top of the kelly bushing are calculated and subtracted from all drilling records. This allows precise well records for once the drilling rig is no longer there.

Since the majority of the water we drink comes from underground fresh water reservoirs, one of the most important considerations in drilling a new well is protecting any fresh water areas. Therefore, the string of surface casing bottom has to properly extend below the fresh water zones. The surface hole must also be drilled to a depth deep enough for it to pass through any loose materials you may encounter until the stable rock is encountered, and the surface pipe is set.

Scratchers are used to help the cement to be able to bond the pipe and the walls of the hold. Their job is to remove the caked-on drilling mud, and it is done by raising and lowering the pipe several times into the hole to allow the scraper to loosen the material. As the crew pumps the cement down into the hole (going through the casing) and out the bottom, it will rise up towards the surface on the outside of the casing creating a good cemented bond all the way around the entire pipe from the bottom to the surface. The pipe is then left in place even when the well is plugged.

To begin, a moderately large casing is used from the surface and partially down into the hole; following it with a slightly smaller string of drill pipe and bit. At the bottom of each string of casing, a casing hanger is installed to permit the next section of pipe to be lowered into place through the current section, before it is firmly attached and cemented permanently into place. As the crew runs the casing, they may also use a technique known as floating the pipe in; which requires filling the casing with drilling mud to prevent it from collapsing under the extremely high external pressure.

When a drilling break (an indicator the formation is more porous and cause the drilling bit to cut into the earth in an abrupt increase) occurs one of the more imperative decisions the drilling supervisor must make is determining how to proceed. Often times, this permeable layer can hold different hydrocarbons (ex. natural gas, crude oil). Thankfully by taking everything into consideration (ex. the location and/or distance to the bottom of the well, how fast the crew is operating the pump, the amount of space outside of the drill pipe, etc.) the crew and/or supervisor can determine exactly how long it will be before the drilling break zone cuttings are able to reach the surface.

During this test, the drill pipe will take the place of the tubing string. However, because this type of testing requires the rig to stop drilling the new hole until it is complete, the production company typically decides whether or not to run the test.

Typically time and/or allowances are allotted in the contract to provide the rig crew time to run the pipe and cement it into place. Generally during any time the rig stops drilling, the lease operator (or production company) will compensate the crew by paying by the hour, or through some other appropriate amount of compensation for the rig crew during any time spent cementing, running pipe, and/or waiting for the cement to set (drilling reports often refer to this as waiting on cement).

As with any type of drilling, as the bit is used the tooth sharpness and diameter will slowly wear away; and when the bit diameter shrinks, so does the diameter of the hole being drilled. To avoid this issue, a reamer is placed right behind the bit. This sequence of rolling cones rotates is the bit turns, and widens the hole slightly larger. Typically this will take one time of reaming the hole to be sufficient.

For the best results when drilling the hole, an incessant series of decisions will be used to adjust the drilling method. This includes considering all aspects from getting the best life and performance out of your drilling bits, to the location of the hole, to what choices you should make to ensure good drilling progress. Typically there are two main ways to control these types of factors:

Any formation the drill bit comes across that is not horizontal, tends to climb uphill. This can easily be solved by applying more drill collars on top of the reamer. The extra drill collars will add more weigh, and thus make the pipe more inflexible. Sadly, drill collars will not solve all your drilling issues. For instance, another common issue is when the drill bit gets stuck in the grooves (also referred to as key seats) located on the sides of the hole.

Formations never have the same density throughout the entire distance to the production zone; and because of this, bit wear, and flexes in the drill pipe, it is very rare the rig crew will experience a hole that goes straight down. In fact, most cases will generally have a twisted profile like a corkscrew; and due to this, the tubing string is likely to rub against the casing when it comes into contact with the various bends. This rubbing will eventually cause the tubing or casing to wear, and in turn, produces even more problems for drilling operations; such as: