Surface Machinery and Methods for Oil-Well Pumping Page: 66
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66 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
This latter method of pumping is common where a number of
wells are situated at intervals along a property line, as are a number
of wells of the Pacific Oil Co. of Coalinga, Calif. Under such condi-
tions, there being no interior wells near by, this method is much
more satisfactory than the use of a power or jack plant.
Plate XIII, B, shows a unit pumping power, previously described,
being used, by a modification of the jerk-line method, to pump two
PUMPING BY THE ENDLESS CABLE SYSTEM.
The endless cable system of pumping has been used for years to
pump shallow oil wells at Volcano, W. Va."'
This system of pumping has also been used for about 25 years by
the Burma Oil Co., at Yenangyung, Upper Burma, India, where
20 wells ranging in depth from 300 to 400 feet are pumped on the
beam by one 15-horsepower engine. The wells were drilled with a
light standard rig with a small band wheel, walking beam, and
derrick. At the time of drilling there were not enough engines for
one to pump each well and this system was developed to meet the
The entire system consists of a boiler with a 15-horsepower steam
engine belted to a band wheel 18 feet in diameter, with a tug pulley
attached to its side, and two small steel tug-pulleys, one opposite each
edge of the band wheel and each mounted on the top of a braced post
at a point just above the top of the band wheel. The endless wire
rope runs over one of these small steel tug-pulleys, around the lower
half of the tug pulley of the large band wheel, and then over the top
of the other small tug pulley. The 8-foot band wheel at each of the
wells is similarly equipped. The steel cable runs from the main
band wheel to the tug wheels and band wheel of the first oil well,
from there to each of the other oil wells, and finally back to the main
Each of the carriers for the cables between wells consists of a
flanged steel pulley 18 inches in diameter mounted on the top of a
small wooden derrick. Suitable direction of approach for the cable
at each well is insured by means of a flanged steel wheel 18 inches in
diameter mounted as an idler on the top of a braced post. The cable
lasts about three years and seldom breaks.
The wells are about 300 feet apart, and are equipped with 2-inch
tubing and 1k-inch wooden sucker rods. They are pumped nine hours
a day with a 14-inch stroke and 20 strokes a minute. The oil pro-
duced has a gravity of 450.
'6 Rig and Reel Magazine, Pumping by endless cables: March, 1923, pp. 1-5.
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George, H. C. Surface Machinery and Methods for Oil-Well Pumping, report, 1925; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc12407/m1/86/: accessed February 27, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.