Surface Machinery and Methods for Oil-Well Pumping

54 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
Electric plant investment (transmission line excluded) __ $36,000.00
Fixed charges-15 years life.
Sinking fund at 7 per cent a year ________ _________ 1,432.44
Taxes and insurance 2 per cent a year------------_ 720.00
Operating cost (plant) : 2,152.44
Fuel, 240 hp. at 12 cubic feet per b. hp. h., at
6 cents per 1,000 cubic feet_________________ 1,513.73
Water, 20 barrels daily, at 1/2 cent per barrel___ 36.50
Lubricating oil, 1,575 gallons a year, at 40 cents
per gallon - -------------------- 630.00
Labor, two oilers per day, at $190 per month each_ 4,560.00
Maintenance for material complete for year, including
labor _______________________ 2,150.00
Complete cost of plant yearly_______________-__ 11,042.67
Plant output :
135 kw. at switchboard 10 per cent loss between board
and load--net load, 121.5 kw.
121.5 kw. X 3,760 hrs. a year = 1,064,340 kw. h.
Unit power cost at switchboard $11,042.67, developing
1,064,340 kw. h. = 1.038 cts. per kw. h.
Installation cost (pumping engine) :
Gas engine, 35-hp., with reverse gear, f. o. b. field_.__-_-_ 1,950.00
Foundation and floor, 16 yards, at $35, includes excava-
tion, forms, and floor_______________________________ 560.00
Connecting and erecting______________________________ 200.00
Water tank set up, including grading _________ 165.00
Gas line and water line, 800 feet, at 35 cents, laid------ 280.00
Total cost_.__ ___ ______ 3,155.00
Installation cost (electric motor):
Motor and necessary control equipment f. o. b. field_ 1, 350. 00
Foundation and floor (cement) 8 yards, at $35__ 280. 00
Transformers, switches, etc., in place, wired------ 275. 00
Electric lines ------------------------ 120. 00
Connecting and erecting material and labor---. 100. 00
Turbo gear, 5 to 1 ratio, f. o. b. job-.....-------- 775. 00
Flex couplings, f. o. b. job 175. 00
Shaft pulley and bearings, f. o. b. job __ 100. 00
Total cost 3, 175. 00
Gas engine cost a year, operates 356 days a year:
Fuel, 4,000 cubic feet a day, at 6 cents per M_____ 85. 14
Water, 3 barrels a day, at I cent _______________ 5. 34
Oil, 2 quarts a day, at 40 cents per gallon --------- 71.20
Maintenance __ __ 175. 00
Fixed charges, sinking fund, 15 years life --------- 125. 54
Taxes, insurance, 2 per cent___- 6_____________ 63. 10
Cost of gas engine accidents, estimated-_ 10. 00
Loss of 9 day's production, average 40 barrels, at
$2 per barrel _____ ___ 720. 00
Total cost----------------__ _ 1, 255. 62

George, H. C. Surface Machinery and Methods for Oil-Well Pumping. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc12407/. Accessed April 21, 2014.