derrick floor versus kelly bushing

Drilling Rig | Oilfield Knowledge

2Rotating system on drilling rig consists of rotary table and drill stem (kellydrill string and bit).Rotary table is a mechanical device with square hole on derrick floor that provides clockwise rotational force to drill string to help drilling a borehole.It contains rotary bushing which is used to turn kelly and kelly bushing.The number of revolution rotatory table makes in one minute is ...

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Drilling Rig Systems | Drilling Course

2The Kelly engages in the Kelly bushing which allow the Kelly to move freely up and down even when rotating the Kelly by the rotary table. The Kelly cock valve is a safety valve which can be closed to prevent back pressure to damage surface equipment like the swivel and the rotary hose.

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A Basic Guide to Oil and Gas Drilling Operations - Greasebook

2Derrick Worker. Commonly referred to as the derrick man ... 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.

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Depth Referencing | Planning | Drilling

2These depths below drill floor (BDF) measured from the rotary table kelly bushings (RTKB) are in turn referred to a universal datum the Chart Datum (CD) for the local area. Note : For onshore operations the reference point for depth is the mean sea level (MSL) and the rotary table kelly bushings (RTKB).

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Sandstone? Shale? Formation Evaluations: Well logs

2KB Kelly Bushing DF Derrick Floor GL Ground Level Wellbore Environment Depth Diameter Temperature Mud Parameters Equipment & Personnel Logging Engineer & Witnesses 8 Log Types • Lithologic Logs – Spontaneous Potential (SP) – Gamma Ray (GR) • Porosity Logs –Neutron – Density – Sonic

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How zonal isolation is provided 15:00 15:40 from the ...

2Rotary table - kelly drilling the rotary table is a revolving section of the drill floor that provides power to turn the drill string in a clockwise direction (to the right as viewed from above). The rotary motion and power are transmitted through the kelly bushing and the kelly to the drill string. Most rigs today

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» Rotary Tables & Well Drilling Hoisting Tools

2The rotary bushings connect to the kelly bushings to actually induce the spin required for drilling Rotary Table Drive Sprocket The distance between the center of the rotary table and the center of the first row of sprocket teeth shall be 53- 1/4 in. for machines that will pass a 20 in. bit or larger.

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Free Engineering Flashcards about pete 1010 exam

22Spinning section of the drill floor that provides power to turn the drill string Kelly and Kelly bushing: Top Drive : Device that turns the drill string suspended from a hook that travels up and down the center of the Derrick; can do a stand of pipe (90 feet) instead of a joint of pipe (30 feet) Drill Pipe

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PPDM Perth Data Management Conference

23 Real World vs. Logical Real World Kelly Bushing Rotary Table Derrick Floor Casing Flange Ground Level Sea Level Mud Line Logical Datum Reference Elevation

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Chapter 13: Well Deviation Surveying and Geosteering ...

2Kelly bushing. This is the top of the bushing which rotates on the derrick floor (although kellys are rarely used on modern drilling rigs with topdrives) and is typically 1ft higher than the derrick floor. Mean sea level. This is the elevation of the sea averaging out the effect of tides or seasonal variations.

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kelly bushing | Oilfield Glossary

21. n. [Drilling] 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.

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Land rigs - AAPG Wiki

2The rotating system consists of the rotary table and the drill stem (kelly [8 in Figure 1] drill string and bit). The rotary table is a square hole in the derrick floor with a rotary bushing that is used to turn the kelly bushing (9) and kelly.

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RIG COMPONENTS - Definitions

2RIG COMPONENTS-- Definitions 12. Kelly - The square or hexagonal member at the upper most part of the drill string (immediately below the swivel) that passes through a properly fitting bushing known as the kelly bushing or drivebushing. The drive bushing transmits rotary motion to the kelly which results in the turning of the drill string. 11.

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Depth in a well - Wikipedia

2The depth reference point is the kelly bushing in the United States and a few other nations but is the drill floor in most places. Differential (or relative) depths or thicknesses should generally be specified with at least two components: a unit and a path plus any eventual specifiers to remove any possible ambiguity.

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Depth Calculations - Production Technology

2Kelly 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. Rotary Table (RT): e.g. MDBRT or TVDBRT. MDBRT stands for Measured Depth Below Rotary Table (MDBRT)

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Depth in a well - OilfieldWiki

2The depth reference point is the kelly bushing in the United States and a few other nations but is the drill floor in most places. Differential (or relative) depths or thicknesses should generally be specified with at least two components: a unit and a path plus any eventual specifiers to remove any possible ambiguity.

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Shandong Kerui Petroleum Equipment Co. Ltd.

2A motorized circular platform in the floor of the rig which rotates the Kelly bushing and Kelly when the top drive is not in use. Turning the Kelly turns all the pipe therefore turns all the pipe therefore drilling the hole. 4 Drawworks A large winch located on the drilling floor which uses steel wire rope to raise and lower the drilling

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The following pictures were taken November 28th 2006 on a ...

2The following pictures were taken November 28th 2006 on a location where it appears that the driller and push on Rig 61 over pulled on the drill pipe in excess of the derrick’s capacity and the derrick collapsed. Imagine you were on this rig floor when this happened. Look at the Kelly Bushing and the surrounding area.

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