SPECIFICATION OF MATERIAL REQUIRED TO BUILD A CALIFORNIA COMBINATION STANDARD AND ROTARY RIG, DERRICK 106 FEET HIGH

WITH 24-FOOT BASE (Continued).

Drawing shows derrick on concrete corners with 16 x 16 x 11⁄2-foot posts between sills and concrete. If concrete is not used, add the following:

25 Footings (Redwood)

3 x 12

20

If galvanized corrugated iron is used for housing, deduct boards as follows:

120 Pieces 11⁄2 x 12 x 16 feet, 60 1 x 12 x 18 feet, 60 1 x 12 x 12 feet. Add 26 gauge corrugated iron:

125 sheets 26" x 10 feet, 75 sheets 26" x 8 feet. Ideal Type Rig and Calf Iron Outfits.

1 Shaft with Crank, Writs Pin, 2 each Collars and Keys....

1 Pair Flanges with Keys and Bolts. 1 Set Center Irons Complete with Bolts.

1 Stirrup

2 Bull Wheel Gudgeons with Bands and Bolts.

1 36-inch Crown Pulley.

1 24-inch Sand Line Pulley.

1 28-foot Brake Band.

1 Brake Staple

1 Brake Lever

1 Jack Post Box, Closed.

*1 Jack Post Plate.

4 Turnbuckle Rods

2 Jack Post Rods.

2 Eye Bolts, % x 22 inches.

2 D. E. Bolts, %-inch x 9 6/12 feet.

1 D. E. Bolt, %-inch x 8 feet.

6-inch shaft

72-inch shaft

8 2/12 feet

7 6/12 feet

21⁄2-inch

7-inch

7-inch
7-inch

72

2" x 6" x 22" 14" x 8 6/12' .11⁄2" x 8 4/12'

2"

3-inch

8-inch

8-inch

8-inch

X 8" x 30" 11⁄2" x 10 8/12' 2" X 9 10/12'

11⁄2" x 4-feet

.11⁄2 x 26-inches

1 Calf Wheel Box D. E. Bolt. 55 Feet No. 1030 Sprocket Chain. 1 Sand Reel with Steel

Flanges

1 Dbl. Friction Sand

Swing Lever Attachment.

2 with 7-inch outfit.

SPECIFICATION OF MATERIAL REQUIRED`TO BUILD A
CALIFORNIA COMBINATION STANDARD AND

ROTARY RIG, DERRICK 106 FEET HIGH
WITH 24-FOOT BASE (Continued).

Woodwork, Double Tug.

56 1-inch x 8-inch Plain Cants for 11-foot Band Wheel.
8 3-inch x 8-inch Plain Cants for 7-foot Tug Pulley.
16 3-inch x 8-inch Grooved Cants for 7-foot Tug Pulley.
24 1-inch x 8-inch Plain Cants for 7-foot Tug Pulley.
8 3-inch x 8-inch Plain Cants for 8-foot Bull Wheels.
16 3-inch x 8-inch Grooved Cants for 8-foot Bull Wheels.
80 1-inch x 8-inch Plain Cants for 8-foot Bull Wheels.

32 Lineal Feet 12-inch Round O. P. for Bull Wheel Pins.

4 Pcs. 3-inch x 12-inch x 18-foot Select O. P. surfaced 4S. to 21⁄2 x 11inches for Bull Wheel Arms.

8 3-inch x 8-inch Plain Cants for 72-foot Calf Wheels.

40 1-inch x 8-inch Plain Cants for 72-foot Calf Wheels.

2 Pcs. 3-inch x 12-inch x 16-foot Select O. P. surfaced 4S. to 21⁄2 x 11inches for Calf Wheel Arms.

SPECIFICATION OF MATERIAL REQUIRED TO BUILD A
CALIFORNIA COMBINATION STANDARD AND
ROTARY RIG, DERRICK 106 FEET HIGH
WITH 24-FOOT BASE (Concluded).

Third Braces 20 feet, 5 inches.

Fourth Braces 19 feet.

Fifth Braces 17 feet, 8 inches.
Sixth Braces 16 feet, 6 inches.
Seventh Braces 15 feet, 1-inch.
Eighth Braces 13 feet, 10 inches.
Ninth Braces 12 feet, 8 inches.
Tenth Braces 11 feet, 6 inches.
Eleventh Braces 10 feet, 3 inches.

SPECIFICATIONS

FOR COMBINATION CABLE AND

ROTARY DRILLING OUTFITS.

Such an outfit would consist of a combination of any one of the complete cable outfits and rotary outfits, as specified on pages 80-96, 215-222, with the exception of the following equipment, which would be duplicated in combining the two outfits:

1 Rotary Derrick.

1 Boiler.

1 Sand Line.

The several sizes of casing elevators only (not the drill pipe elevators).

1 Casing or Drilling Hook.

The several sizes of bailers included with the rotary outfit.

1 Turbine Generator.

All of the blacksmith and miscellaneous tools and supplies duplicated in combining the two outfits.

Note: Two engines are required with a combination outfit, one to operate the cable tools and the other to drive the draw works and rotary.

CHAPTER VII

DRILLING BY THE HYDRAULIC CIRCULATING SYSTEM.* USE OF MUD LADEN FLUID

Combining, in a measure, the advantages of the cable and the rotary systems of drilling, the hydraulic circulating system is peculiarly adapted to the drilling of soft and caving formations, such as loose sand, boulders, etc., or alternating hard and soft formations, where a complete combination cable and rotary outfit may not be needed. Also by means of the circulating system it is possible to carry casing of large size to exceptional depths. In one instance 10-inch casing was carried to a depth of 3,336 feet in 122 days time. For this depth three or more strings of casing are usually required; the saving in expense for casing is, therefore, apparent.

By means of a circulating casing head, water impregnated with clay, otherwise known as mud laden fluid, is forced by slush pumps down inside the casing, during drilling with the cable tools, returning between the casing and the wall of the hole and carrying with it the cuttings and also any caving material that otherwise would tend to lodge against the casing and "freeze” it. Other advantages of this system are that caves and water and gas-bearing strata may be sealed off by the mud-laden fluid while drilling through them; and the casing is at all times maintained free to follow the drilling tools.

References: U. S. Department of the Interior, Bureau of Mines technical papers:

No. 66 Mud Laden Fluid Applied to Well Drilling, by J. A. Pollard and A. G. Heggem. Drilling Wells in Oklahoma by the Mud Laden Fluid Method, by A. G. Heggem and J. A. Pollard.

No. 68

No. 134 The Use of Mud Laden Fluid in Oil and Gas Wells, by J. O. Lewis and Wm. F. McMurray.

No. 163 Methods of Shutting Off Water in Oil and Gas Wells, by F. B. Tough. Circular, Hydraulic Circulating System.

Oil Well Supply Co.

236

H. B. Pearson, Superintendent of the Canadian Western Natural Gas, Light, Heat and Power Co., reports that two strings of casing, 10-inch and 84-inch, collapsed together in a well he was drilling in Alberta, Canada. Ordinarily this would result in the loss of the hole and of most of the casing, but by employing the circulating system he recovered both strings of casing and saved the hole.

Before building the derrick, sump holes should be dug on the side of the derrick location and the earth removed may be placed as a foundation for the engine and belt houses. These sump holes should be three in number and should be about four feet deep by twelve feet wide and twentyfour feet long. They should be connected by a sluice box provided with a gate to control the flow from the two outside sumps to the inner one. Diagram (Fig. 156) shows only two sumps of small size, but the sump capacity can be varied according to quantity of mud fluid required.

Heavy corner foundations should be laid for the derrick and the derrick mud sills should be about five feet above the ground, giving, in effect, a ten-foot cellar.

The derrick should be at least 88 feet high, with 20-foot base. The floor should be extended 6 feet on the ladder side to

provide room for the pumps. The crown block should carry not less than four casing pulleys. Six-inch Ideal chain driven rig irons and calf wheel equipment are best for this purpose.