derrick floor versus kelly bushing made in china

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.†

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.†

A portable derrick capable of being erected as a unit, as distinguished from a standard derrick, which cannot be raised to a working position as a unit.†

The derrickman"s working platform. Double board, tribble board, fourable board; a monkey board located at a height in the derrick or mast equal to two, three, or four lengths of pipe respectively.†

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 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.†

A vertical pipe rising along the side of the derrick or mast. It joins the discharge line leading from the mud pump to the rotary hose and through which mud is pumped going into the hole.†

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.†

n: a large load-bearing structure, usually of bolted construction. In drilling, the standard derrick has four legs standing at the corners of the substructure and reaching to the crown block. The substructure is an assembly of heavy beams used to elevate the derrick and provide space to install blowout preventers, casingheads, and so forth.

n: all members in the assembly used for rotary drilling from the swivel to the bit, including the kelly, the drill pipe and tool joints, the drill collars, the stabilizers, and various specialty items. Compare drill string.

n: the column, or string, of drill pipe with attached tool joints that transmits fluid and rotational power from the kelly to the drill collars and the bit. Often, the term is loosely applied to include both drill pipe and drill collars.

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.

Driller’s Depth below rotary table (DDbrt): The depth of a well or features within the wellbore as measured while drilling. The measured length of each joint of drillpipe or tubing is added to provide a total depth or measurement to the point of interest. Drillers depth is the first depth measurement of a wellbore and is taken from the rotary table level on the rig floor. In most cases, subsequent depth measurements, such as those made during the well completion phase, are corrected to the wellhead datum that is based on drillers depth (reference: Schlumberger Oilfield Glossary).

LEE C. MOORE, Set back capacity 700 klb. Height to rotary beams 24 ft. Drill Floor Height 30 ft.; Complete with: Catwalk, 1 Set of Skidding Gear, Hydraulic jack up unit

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.

RMW94D7C–NBA star Derrick Rose of Chicago Bulls plays table tennis during a promotional event on his Asia tour in Hong Kong, China, 13 September 2013.

RM2G448EX–Separating and storage of harvest; Separator and Derrick Table .. Part of photo album with recordings of harvesting farmers in the United States.

RM2KFXNDF–U.S. Army Soldiers Maj. Derrick Bishop, left, assigned to Joint Modernization Command, and Maj. James Streams, center, assigned to The Research and Analysis Center – White Sands Missile Range, New Mexico, discuss data analysis with analyst Dave Futch, right, of Army Futures Command at the Table of Knowledge.

RFKFBGM7–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RFTTTGFR–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RM2GYR1BJ–Army Sgt. 1st Class Derrick Smith, platoon sergeant, alpha troop, 1-75 CAV, (right), aims down his sights on the M240L machine gun as he qualifies on Table 2. Next to him, Army Spc. Kurtis Sellers, Gunner, alpha troop, 1-75 CAV, (left), helps feed the rounds into the M240L in order to help them feed without a problem as Smith qualifies. (U.S. Army photo by Sgt. Justin Navin) Strike Soldiers from across 2nd Brigade Combat Team are coming to this range to get qualified on their M240 and M249 machine guns, Jan. 23, Fort Campbell, KY. This range includes Tables 1 through 3, and a zero range.

RM2E6C6H1–NBA Chicago Bulls point guard Derrick Rose plays table tennis on a basketball court as he meets fans during a promotional event as part of his Asia tour in Hong Kong, September 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: SPORT TABLE TENNIS BASKETBALL)

RFKFBGM2–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RFTTTGFN–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RM2GYR1BT–Army Sgt. 1st Class Derrick Smith, platoon sergeant, alpha troop, 1-75 CAV, (right), aims down his sights on the M240L machine gun as he qualifies on Table 2. Next to him, Army Spc. Kurtis Sellers, Gunner, alpha troop, 1-75 CAV, (left), helps feed the rounds into the M240L in order to help them feed without a problem as Smith qualifies. (U.S. Army photo by Sgt. Justin Navin) Strike Soldiers from across 2nd Brigade Combat Team are coming to this range to get qualified on their M240 and M249 machine guns, Jan. 23, Fort Campbell, KY. This range includes Tables 1 through 3, and a zero range.

RM2D0A2HM–Hong Kong actress Shiga Lin joins NBA Chicago Bulls point guard Derrick Rose to play table tennis on a basketball court during a promotional event as part of Rose"s Asia tour in Hong Kong, September 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: SPORT TABLE TENNIS BASKETBALL)

RMTXJFM0–Chicago Bulls guard Derrick Rose sits on the scorers table during the fourth quarter against the Miami Heat at the United Center in Chicago on January 15, 2011. The Bulls won 99-96. UPI/Brian Kersey

RF2G75WJJ–Groundwater or artesian water. Water extraction. Artesian water well in cross section. Water well drilling diagram with derrick. Earth layers. Vector

RM2ANJEYG–Engineering and Contracting . trxurpi ESC. Dumping Table for Loading Wagons. onto the hinged pans or tables and wagons driven un-derneath were loaded by unlatching the pans which thenautomatically tilted, emptied and returned to loading po-sition. In discharging the pans nicely trimmed theload in the wagon and the amount spilled was very small.One man attended the table. When a change of positionwas necessary the derrick lifted the table bodily. Thetable was found to be a most economical and easily op- 71 erated device by the contractors, the E. J. Cook Co., Port-land, Ore. A NEW KNOCK-DOWN S

RFKFCB2N–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RFTTTGFT–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RM2GYR1CD–Army Sgt. 1st Class Derrick Smith, platoon sergeant, alpha troop, 1-75 CAV, (left), aims down his sights on the M240L machine gun as he qualifies on Table 2. (U.S. Army photo by Sgt. Justin Navin) Strike Soldiers from across 2nd Brigade Combat Team are coming to this range to get qualified on their M240 and M249 machine guns, Jan. 23, Fort Campbell, KY. This range includes Tables 1 through 3, and a zero range. Forty crews qualified on the M249 these past two days,” said Army 1st Lt. Lindsey Hildebrand, multifunctional platoon leader, military intelligence company, 39th BEB, 2nd BCT, 101s

RMPPB30H–U.S. Army Spc. Derrick Hanify, a Soldier assigned to India Forward Support Company, 2nd Battalion, 5th Cavalry Regiment, 1st Armored Brigade Combat Team, 1st Cavalry Division, fires a M-240B machine gun during a table five un-stabilized gunnery, Novo Selo Training Area, Bulgaria, August 14, 2018. This exercise is in support of Atlantic Resolve, an enduring training exercise between NATO and U.S. Forces.

RMPF3YFF–U.S. Army Spc. Derrick Hanify, a Soldier assigned to India Forward Support Company, 2nd Battalion, 5th Cavalry Regiment, 1st Armored Brigade Combat Team, 1st Cavalry Division, fires a M-240B machine gun during a table five un-stabilized gunnery, Novo Selo Training Area, Bulgaria, August 14, 2018. This exercise is in support of Atlantic Resolve, an enduring training exercise between NATO and U.S. Forces. (U.S. Army National Guard photo by Sgt. Jamar Marcel Pugh, 382nd Public Affairs Detachment/ 1st ABCT, 1st CD/Released)

RMPFFBFG–. Deep borehole surveys and problems. Boring. Plan View of oinOil Well ComparingResulis of Several Surve/s Derrick^-^ Floor I. depth Fig. 24.—Plan of an oil well comparing Fig. 25. results of several surveys made under varied conditions. {After Macready.) could be compared graphically as in Fig. 24 (after R. P. McLaughhn) ^ Faihng this a check survey should be made in and out of the borehole as in Fig. 25.^ The manner of compiling a check will be seen from Table VIII, wherein 1 By the courtesy of Bull. Amer. Assoc. Petroleum Geol. (Vol. 14, No. 5, p. 586, 1930). 2 Ibid., p. 588.. Please note

RM2CYEK0F–NBA Chicago Bulls point guard Derrick Rose celebrates with Hong Kong actress Shiga Lin as they play table tennis on a basketball court during a promotional event as part of Rose"s Asia tour in Hong Kong, September 13, 2013. REUTERS/Bobby Yip (CHINA - Tags: SPORT TABLE TENNIS BASKETBALL ENTERTAINMENT)

RM2CX4RGX–Chicago Bulls guard Derrick Rose (L) sits on the scorers table with teammate center Joakim Noah (R) in the closing seconds of their loss to the Atlanta Hawks in the second half of their Eastern Conference semifinals NBA basketball game in Atlanta, Georgia May 8, 2011. REUTERS/Tami Chappell (UNITED STATES - Tags: SPORT BASKETBALL)

RM2AG5CX7–. Handbook of construction plant, its cost and efficiency. 590 24.84 Skilled labor 1,890 79.57 Common labor 2,160 90.94 Engineer 830 34.94 Drivers 570 24.00 Cutting Off: Common labor 1,700 71.57 Waling and Tying: Foreman 760 32.00 Carpenters 2,380 100.20 Skilled labor 6,330 266.49 Common labor 13,370 5°£-2° Engineer 1,960 82.52 Tug and crew 40 1-68 Derrick scow 1.040 43. iS Drivers 570 24.00 PILING Table II for round piles includes only those piles in the dockproper. The item pointing and handling includes sorting, point-ing, rafting and delivering to drivers. The cutting- includes theremoving

RFKFCB2R–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RFTTTGG9–JAMAICA, Port Antonio. Albert Minott, Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Wil

RMPPB30P–U.S. Army Spc. Derrick Hanify, a Soldier assigned to India Forward Support Company, 2nd Battalion, 5th Cavalry Regiment, 1st Armored Brigade Combat Team, 1st Cavalry Division, fires a M-240B machine gun during a table five un-stabilized gunnery, Novo Selo Training Area, Bulgaria, August 14, 2018. This exercise is in support of Atlantic Resolve, an enduring training exercise between NATO and U.S. Forces.

RMPF6206–U.S. Army Spc. Derrick Hanify, a Soldier assigned to India Forward Support Company, 2nd Battalion, 5th Cavalry Regiment, 1st Armored Brigade Combat Team, 1st Cavalry Division, fires a M-240B machine gun during a table five un-stabilized gunnery, Novo Selo Training Area, Bulgaria, August 14, 2018. This exercise is in support of Atlantic Resolve, an enduring training exercise between NATO and U.S. Forces. (U.S. Army National Guard photo by Sgt. Jamar Marcel Pugh, 382nd Public Affairs Detachment/ 1st ABCT, 1st CD/Released)

RM2CGWHR6–. Baltimore and Ohio employees magazine . y the new bearing block. Tohandle the new table two cranes wereused, one being picketed and the otherfree. The new table was first run ontop of the old one and then set alongside while bents were being placed. A newgranite block weighing about 12,000pounds was then placed, using a mixtureof cement, sand and iron chipping for thejoint, after which the new table was setand the old one loaded on a car. Whilethis work was being done the concretecircle wall was blasted out and removedwith stiff leg derrick and steam ditcher,together with all other temporary

RFKFCB2P–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RFTTTGG5–JAMAICA, Port Antonio. Albert Minott, Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Wil

RMPF6202–U.S. Army Spc. Derrick Hanify, a Soldier assigned to India Forward Support Company, 2nd Battalion, 5th Cavalry Regiment, 1st Armored Brigade Combat Team, 1st Cavalry Division, fires a M-240B machine gun during a table five un-stabilized gunnery, Novo Selo Training Area, Bulgaria, August 14, 2018. This exercise is in support of Atlantic Resolve, an enduring training exercise between NATO and U.S. Forces. (U.S. Army National Guard photo by Sgt. Jamar Marcel Pugh, 382nd Public Affairs Detachment/ 1st ABCT, 1st CD/Released)

RMRD3G96–. Deep borehole surveys and problems. Boring. Plan View of oinOil Well ComparingResulis of Several Surve/s Derrick^-^ Floor I. depth Fig. 24.—Plan of an oil well comparing Fig. 25. results of several surveys made under varied conditions. {After Macready.) could be compared graphically as in Fig. 24 (after R. P. McLaughhn) ^ Faihng this a check survey should be made in and out of the borehole as in Fig. 25.^ The manner of compiling a check will be seen from Table VIII, wherein 1 By the courtesy of Bull. Amer. Assoc. Petroleum Geol. (Vol. 14, No. 5, p. 586, 1930). 2 Ibid., p. 588.. Please note

RFKFBGMA–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.

RFTTTGG3–JAMAICA, Port Antonio. Albert Minott, Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Wil

RMPF3YFB–U.S. Army Spc. Derrick Hanify, a Soldier assigned to India Forward Support Company, 2nd Battalion, 5th Cavalry Regiment, 1st Armored Brigade Combat Team, 1st Cavalry Division, fires a M-240B machine gun during a table five un-stabilized gunnery, Novo Selo Training Area, Bulgaria, August 14, 2018. This exercise is in support of Atlantic Resolve, an enduring training exercise between NATO and U.S. Forces. (U.S. Army National Guard photo by Sgt. Jamar Marcel Pugh, 382nd Public Affairs Detachment/ 1st ABCT, 1st CD/Released)

RMHFY8HD–100614-N-1711-001 WASHINGTON (June 14, 2010) Vice Adm. Harry B. Harris Jr., commander of U.S. 6th Fleet, hosts a media round table at the Pentagon regarding international partnerships and maritime safety and security in the U.S. Navy"s Europe and Africa areas of responsibility. (U.S Navy photo by Mass Communication Specialist 1st Class Derrick M. Ingle/Released) US Navy 100614-N-1711I-001 Vice Adm. Harry B. Harris Jr., commander of U.S. 6th Fleet, hosts a media round table at the Pentagon

RFKFBGM9–JAMAICA, Port Antonio. Joseph "Powder" Bennett and Derrick "Johnny" Henry of the Mento band, The Jolly Boys playing dominoes at the Willow Wind Bar.