1500 HP SCR DRILLING RIG

  1. ADVANTAGES OF THE SPLIT LEVEL TYPE DESIGN


  2. SL-7 VS. OTHER DESIGNS
    1. SL-7 vs. IRI 1500 and Flex Rig Designs
    2. SL-7 vs. Box-on-Box Rig Designs
    3. SL-7 vs. Trailerized Rig Designs

  3. SPECIFICATIONS
    1. Mast
    2. Substructure
    3. V-Door
    4. Catwalk
    5. Drawworks
    6. Drill Line
    7. Deadline Anchor
    8. Drill Line Spooler
    9. Travelling Assembly
    10. Rotary Equipment
    11. Mud Handling System
    12. Generator Units
    13. SCR House
    14. Auxilary Equipment & Storage
    15. Instrumentation, Control, and Recording Equipment
    16. BOP Prevention & Well Control Equipment
    17. Drill String
    18. Drilling Floor Equipment

I.  ADVANTAGES OF THE SPLIT LEVEL TYPE DESIGN



A key feature of the Split Level Design is that the drawworks is down below, near ground level, vs. the on-floor drawworks self-elevating and box-on-box designs. Some relevant information and favorable comparisons to other designs are as follows:

  1. The best and most popular designs today are split level types. The last 100 or so rigs Helmerich and Payne built during the last 5 years are split level designs. Not self-elevating, not box-on-box. Another leading drilling contractor, Rowan Drilling, has been using split level rigs for 30 years and the new ones they are building are also split levels. All the leading manufacturers starting with National Oilwell Varco are building more split level types than other kinds. Very simply, the split level design is better than box-on-box or self-elevating types.


  2. The split level design has been in use for over 40 years. All drilling contractors of this time period used this design: Parker Drilling, Penrod, Loffland Brothers (now Nabors), Helmerich and Payne, Rowan Drilling, etc. These contractors continue to use and favor this design.


  3. During the last 10 years, the use of disc brakes have accelerated. This has had the effect of making split levels more popular. With disc brakes, the drawworks can be controlled from anywhre on the drill floor or doghouse by simple air or hydraulic control hoses. The driller can be sitting down on the doghouse and control the drawworks from any convenient place on the drill floor. In fact, all new offshore rigs - jack-ups, semis, drill ships have this type of set-up. The need to have the driller standing by the drawworks is no longer necessary.


  4. Because of the reason stated in item C, the split level design is now the most popular and command higher day rates


  5. Compare the Split Level Design to the Self-Elevating Drawworks Design:


    1. A drawworks elevating system with a platform, parallelogram legs and raising sheaves have to be fabricated. These will have to be assembled at the drill site, the drawworks installed at near ground level, and raised using raising lines, hydraulic winches, or cylinders. All these cost money and need to be maintained and/or replaced in later years. A "grasshopper" (articulating truss or cable tray) is needed to convey electric cables and power to the drawworks on the drill floor. These designs may also require that the driller ride the drawworks elevator from the ground to floor level, a practice that safety regulators in the United States will no longer tolerate. All these are unnecessary with the split level design.


    2. The split level design with easy to control disc brake feature is very popular in the United States today. Leading contractors have started to move these types of rigs to the Middle East and some to South America, resulting in higher day rates. it is only a matter of time before these designs become popular in other parts of the world.


    3. The safety issues, cost and required rig-up time mentioned makees the split level design superior to the on-floor self-elevating drawworks design.


    4. Also, please note that without the drawworks on the floor, the rig crew has a clear open space to work on. There is no big equipment to stay away from, go around, or go to the back or other side and obstruct the view. These are very good reasons as to why the drawworks ought to stay near ground level.


  6. There is nothing wrong with self-elevating or box-on-box designs. We appreciate that some operators prefer these types of rigs. All we want to do is present relevant split level style information, and provide the reasons why we believe, along with the leading drilling contractors and operators in the United States, that the split level design is superior.


    7.

II.  SL-7 VS. OTHER RIG DESIGNS



  1. SL-7 VS IRI 1500 AND FLEX RIG DESIGNS


    2. The Helmerich & Payne Proprietary "Flex Rig", IRI 1000-1500, and National (NOV) Designs are the most popular designes in existence today. The SL-7 Design compares favorable with all three (3).

    1. The SL-7 does not have very large hydraulic cylinders required to raise the mast. The mast is installed at near ground level and raised using conventional sling (raising) lines. There have been several hydraulic failures with the use of large cylinders, resulting in a dropping of the mast. The SL-7 does not have that inherent risk.


    2. The IRI 1500, Flex Rig, and NOV ideal rig masts install on the drill floor. The mast has to climb to the drill floor using two (2) ramps on the driller's and off-driller's sides. Failures have been experienced on these ramps before. The SL-7 does not have this inherent risk.


    3. The IRI 1500 and Flex Rigs assemble and telescope the mast near ground level on the drawworks side. The drawworks and the equipment behind the drawworks (pumps, tanks, etc.) cannot be rigged-up until the mast is installed on the drill floor.


    4. The SL-7 does not have and does not need hydraulic cylinders to telescope the substructure to operating position.


    5. The SL-7 is the most stable rig under erection and operating loads. The safety factors against overturning are higher than any of the other rig designs mentioned.




  2. SL-7 VS BOX-ON-BOX RIG DESIGNS


    1. Box-on-Box type rigs are the longest to assemble at the drill site. These rigs require 20 truck loads to transport and about 250 pins and bolts to put together the many pieces. These 20 loads are as follows:


      2. MAST SUBSTRUCTURE
      1. Top Section with Crown
      2. Upper Mid Section
      3. Mid Section
      4. Lower Mid Section
      5. Bottom Section
      6. Mast A-Frame
      7. Racking Board
      8. Brace/Girts/Boom Kits
      9. Block-Hook, Equalizer, Mast Raising
        Lines, Misc.
      1. Lower Box, Driller's Side
      2. Lower Box, Off-Driller's Side
      3. Top Box, Driller's Side
      4. Top Box, Off-Driller's Side
      5. Setback
      6. Rotary Spreaders/Drawworks Spreaders/ Substructure Braces at Ground Level (note that each one has to be assembled piece by piece)
      7. Flooring Panels
      8. Drawworks
      9. Engine 1
      10. Engine 2
      11. Compound

      The hundreds of bolts and pins to install are usually all mixed together in a barrel that needs to be sorted on-site. Pins and bolts are lost and need to be replaced.

    2. The Box-on-Box rig requires a large crane with a long boom to assemble on site. The on-floor mast has to either climb a ramp or be lifted to the floor. The on-floor drawworks also requires a crane to install. The two (2) engines and compound also require a large crane to be put together.


    3. The SL-7 design requires a significantly lesser number of loads.


    4. The SL-7 drawworks is installed at near ground level and does not have to be lifted to the drill floor with big cranes and long booms.


    5. The SL-7 takes less time to rig-up and rig-down.




  3. SL-7 VS TRAILERIZED RIG DESIGNS


    4. Trailerized Rigs available in the 750 HP - 1500 HP market include IDECO-H44, IDECO 1000, Wilson 75, Cabot 900, Skytop TR 800, and several others.

    1. Trailerized Rigs have less allowable hook loads:


      1. IDECO H-1000: 358,000 lbs.
      2. Wilson 75: 368,000 lbs.
      3. Skytop TR 800: 410,000 lbs.
        4. The SL-7 1500 HP has a 715,000 lbs. Hook Load.


    2. Trailerized Rigs have doubles mast whereas the SL-7 has trebles mast. There are 1/3 less connections to make.


    3. Trailer Rig Substructures are 15-16 ft. high whereas the SL-7 substructure is 21 ft. high. Options for taller substructures are also available.


    4. Trailer Rigs use hydraulic cylinders to raise and extend/telescope the mast (sometimes wireline scoping is used using a hydraulic winch). The SL-7 does not use hydraulic cylinders or hydraulic winches

III.  SPECIFICATIONS



  1. MAST


    1. Model: Parco SL-136-A Cantilever/Split Level
    2. Hook Capacity: 750,000 lb
    3. Clear Height: 136 ft.
    4. Racking Capacity: 224 Stands (Triples)
    5. Crown Block: 6 - 48 inch sheaves plus 1 - 55 inch fast line sheave
    6. Lift Lines: 1-3/4" 6 x 25, RL-XIP-IWRC

  2. SUBSTRUCTURE


    1. Model: PARCO SL-136-A
    2. Drill Floor Height: 21 feet
    3. Casing Capacity: 638,000 lb.
    4. Setback Capacity: 487,000 lb.

  3. V-DOOR


  4. CATWALK


    1. Two (2) pieces, each 18"H x 5'W x 30'L

  5. DRAWWORKS


    1. Model: OIME SL1500
    2. Rated Horsepower: 1,500HP
    3. Drive Motors: 2 - GE752 Traction Motors w/10hp blowers
    4. Auxiliary Brake: Wichita Model 7-337-310-115
    5. Brake Cooling: 50 bbl water tank, w/
      4 x 3 x 13 centrifugal pump and 30 hp electric driver.

  6. DRILL LINE


    1. Make: Union Wire Rope, Approx. 5,100 ft.
    2. Type: 1-1/4" RRL, EIPS, IWRC (Domestic)

  7. DEADLINE ANCHOR


    1. Make: Hercules Model 131-T, 100,000 lb.

  8. DRILL LINE SPOOLER


    1. Type: Air Drive, Ingersol Rand, Model 92RB078
    2. Capacity: 5,000 ft. of 1-1/4" Drill Line

  9. TRAVELLING ASSEMBLY


    1. Block

      1. Model: IDECO Big Shorty
      2. Rating: 500 Ton
      3. Sheaves: 6 - 50" for 1-1/4" Line

    2. Hook
      1. Model: BJ Dynaplex
      2. Rating: 500 Ton

    3. Elevator Links: 132", 350 Ton

  10. ROTARY EQUIPMENT


    1. Swivel

      1. Model: National 1324
      2. Rating: 500 Ton

    2. Kelly
      1. Type: Hexagonal
      2. Size: 5-1/4", 40 ft.

    3. Kelly Bushing: Pin Drive


    4. Kelly Hose

      1. Type: Grade D - API 7K, 5000 psi; 65' long

    5. Rotary Table
      1. Size: 27-1/2" Square
      2. Rating: 500 Ton
      3. Drive: 1-GE752 Traction Motor w/10 hp detached blower
      4. Master Bushing: 27-1/2"
      5. Insert Bowls: 1, 2, & 3


  11. MUD HANDLING SYSTEM


    1. Mud Pumps: Two (2) - BAOJI Model FC1600 - 1,600 HP

      1. Type: Triplex
      2. Drivers: GE752 Traction Motors w/10 hp blowers
      3. Pulsation Dampeners: Hydrill K-20, 5000 psi
      4. Charging Pumps: 8 x 6 x 11 Centrifugal w/75 hp electric driver

    2. Tanks

      1. Shaker Tank: 500 bbl with:
        1. Three (3) SWACO Shale Shakers, 400 gpm, w/1.5 hp motors
        2. Two (2) Circulating Pumps, 6 x 5 x 11 w/60 hp electric drivers
        3. One (1) Drilco Degasser, 700 gpm w/ 10hp driver
        4. One (1) Crestex Desilter, 12 cone, 600 gpm rating
        5. One (1) Crestex Desander, 1 cone, 10" 600 gpm rating
      2. Suction Tank: 500 bbl with:
        1. Two (2) Pumps, 6 x 5 x 11 w/60 hp electric drivers
        2. Three (3) MAX 2000 mud agitators, w/10 hp electric drivers
        3. Two (2) Crestex hoppers
      3. Reserve Tank: 500 bbl with:
        1. Three (3) MAX 2000 mud agitators, w/10 hp electric drivers
      4. Trip Tank: 500 bbl with:
        1. One (1) 4 x 3 x 13 centrifugal pump w/30 hp electric drivers


  12. GENERATOR UNITS


    1. Engines: Three (3) Detroit Diesel Power, Model 12V4000, 1,500 HP
    2. Generators: Three (3) Baylor, Model 5637 unit for SCR Application, 1225 KW, 1750 KVA

  13. SCR HOUSE


    1. IEC Systems LLC 3 Gen x 4 SCR system
      1. 600 VAC, 750 VDC 3 phase
      2. Input: 1,600 Amps, 60 hz
      3. Output: 750 VDC, 2,000 AMP ADC
      4. Climate controlled, self-contained unit

  14. AUXILIARY EQUIPMENT & STORAGE


    1. Air Compressor
      1. Two (2) Curtis 40 Series, Screw Type, 173 CFM, 125 psi
        Powered by 40 hp electric drivers

    2. Air Receivers
      1. Two (2) 200 gallon vertical

    3. Cold Start Compressor
      1. One (1) Lambardi 10 hp Diesel pull start, Model CAERSPKG, R series
      2. 40 gallon receiver attached, 25.25 ACFM @ 100 psi

    4. Dog House
      1. One (1) 8' x 35' driller's side mounted

    5. Change House
      1. One (1) 8' x 40' with 24 individual lockers, shelves, and table

    6. Toolpusher Quarter
      1. One (1) 14' x 48'6" c/w furnishings, a/c, kitchen, bedroom, bathroom & office; Triple skid mounted

    7. Crew Quarter
      1. One (1) 14' x 48'6" c/w furnishings, a/c, kitchen, bedroom, two (2) bathrooms, and sitting room; Triple skid mounted

    8. Fuel Tank
      1. One (1) 286 bbl Tank w/
      2. One (1) 400 gallon elevated day tank,
      3. RCI Fuel purifiers, Dayton GPCV6V-05 pump with 2hp, 3ph electric pump motors

    9. Water Tank
      1. One (1) 483 bbl tank with
      2. Two (2) 4 x 3 x 13 centrifugal pumps driven by 30 hp electric motors


  15. INSTRUMENTATION, CONTROL & RECORDING EQUIPMENT


    1. Driller's Console, AOI Custom, Single Bay with:
      1. Model 100 Weight Indicator
      2. Electric Torque Indicator
      3. Rotary RPM Indicator
      4. Pump Pressure Gauge
      5. Tong Line Pull Indicator
      6. Down Time Valve
      7. Pump Stroke Coutner
      8. Satellite Automatic Driller

    2. Driller's Control Console (DCC)
      1. One (1) 12 Position Selector Switch
      2. One (1) Drilling / Tripping
      3. One (1) Drawworks Speed Selection
      4. One (1) SCR/MP-1/MP-2, Drawworks/Rotary, T.A. Control Unit
      5. One (1) Hydraulic Tong Controls
      6. One (1) Emergency Brake Control

    3. Drilling Recorder
      1. One (1) ARG series 5 pen recorder to record:
        1. Hook Load
        2. ROP
        3. Rotary Torque
        4. Pump Pressure
        5. Rotary RPM
        6. Totco Deviation Tool, 0-8 degrees


  16. BOP PREVENTION & WELL CONTROL EQUIPMENT


    1. Preventer
      1. One (1) Annular Type, 13-5/8" API, Shaffer 5,000 psi rating
      2. One (1) Ram Type preventors, 13-5/8" 5,000 psi, Cameron Type U Double
      3. One (1) Ram Type preventors, 13-5/8" 5,000 psi, Cameron Type U Double
      4. One (1) of Each Ram set, 13-3/8", 9-5/8", 7", 6-5/8"
      5. One (1) set of Blind rams
      6. One (1) Adapter/Spacer spool, 13-5/8", 5,000 lb.
      7. One (1) set Risers and Bell Nipples

    2. Accumulator Unit and Control
      1. One (1) Consolidated Pressure Control 5S-2160-25 Manifold 5036, triplex pump, 220 gallon, 3,000 psi 12 bottle, 300 gal reservoir w/ air pump & 25 hp driver

    3. Choke Manifold
      1. One (1) 5,000 psi Cameron with SWACO adjustable 2-9/16" API
      2. One (1) Remote control panel on rig floor

    4. Gas Buster
      1. One (1) OEM Poor Boy 26"

    5. Float Valves
      1. One (1) each of 7-5/8", 6-5/8", 4-1/2", and 3-1/2" connections

    6. IBOP Vavle
      1. One (1) each 4-1/2" IF x 3-1/2" API


  17. DRILL STRING


    1. Drill Pipe
      1. 335 jts, 12,000 ft, G105 16.5lb/ft 4-1/2" XH
      2. 30 jts, Heviwate Drill Pipe 4-1/2" XH

    2. Drill Collars
      1. 21 jts, 6-1/4" 4-1/2" XH connection, spiral
      2. 9 jts, 8" 6-5/8" API Regular connection, spiral

    3. Bit Subs
      1. One (1) each, 6-5/8" x 6-5/8" Reg box
      2. One (1) each, 4-1/2" reg Box x 4-1/2" IF Box
      3. One (1) each, 7-5/8" reg Box x 6-5/8" reg Box

    4. Kelly Saver Sub
      1. One (1) each, 4-1/2" XH Pin x 4-1/2" XH Box

    5. Crossovers & Subs>
      1. Two (2) each 4-1/2" IF pin x 6-5/8" reg Box
      2. One (1) each Lifting Sub w/ 4-1/2" reg Pin for 8" Drill Collars
      3. One (1) each Lifting Sub w/ 4-1/2" reg Pin for 6-1/4" Drill Collars
      4. One (1) each 4-1/2" IF x 6-5/8" reg Pin
      5. One (1) each 6-5/8" reg Pin x 4-1/2" IF Box

    6. Pipe Racks
      1. Eight (8) each, 3 sided, 18" H to match catwalk


  18. DRILLING FLOOR EQUIPMENT


    1. Slips
      1. Two (2) each Wooley XL type A for:
        1. 8" drill collars
        2. 6-1/4" drill collars
        3. 4-1/2" drillpipe

    2. Elevators
      1. Two (2) each Wooley 350 ton for 4-1/2" drillpipe

    3. Tongs
      1. Wooley Super B for:
        1. 8" drill collars
        2. 6-1/4" drill collars
        3. 4-1/2" drill collars

    4. Spinning Tongs
      1. JT Flour International Model SSW40

    5. Hydraulic Cathead
      1. Two (2) Hydraulic Cylinders with independent controls on driller's console

    6. Dog Collars/Safety Clamps
      1. One (1) 8-1/2" DC, type C collar clamp with wrench
      2. One (1) 6-1/4" DC

    7. TW Valve
      1. One (1) 4-1/2" XH pin x 4-1/2" XH box 6-1/2" OD

    8. Hydraulic Power Unit
      1. One (1) World Wide, 30 gpm, Hartmann PVX464-CKXXX-20FL pump w/ 20 hp model XWWE20-18-256TC, electric drive

    9. Air Hoists
      1. Two (2) Texas First Industrial JQHSB-50X12, for 5/8" line size

    10. Air Tuggers
      1. One (1) Ingersol Rand Model LS2-600R-PH6N 3/8" line

    11. Kelly Spinner, Air Drive, Reversible


    12. Lift Assist Assembly, including Geronimo Seat and Escape Slide


    13. Wire Line Unit
      1. One (1) Fire Star Rig & Supply, Model 097X15000 w/15,000 ft 0.092 wire