Surface Machinery and Methods for Oil-Well Pumping Page: 64
64 SURFACE MACHINERY AND METHODS FOR OIL-WELL PUMPING.
steel main sill and driven by a small motor, or oil or gas engine, by
belt, chain, or gear drive.
Portable unit pumping powers are used in some of the older and
shallower oil fields for testing individual production of isolated
wells or for wells that need to be pumped the full 24 hours. Such
wells can not be pumped advantageously by the power unit for the
other wells in the vicinity which are pumped only a few hours
The Brundred Bros., oil producers of Oil City, Pa., use several
of these portable pumping units, each consisting of a wagon truck
on which is mounted the power equipment of 6 or 8 horsepower gas
engine, gears, pitman, walking beam, and accessories.
Some of the traction drilling machines used in the oil fields are
also designed for use in pulling rods and tubing, cleaning out old
wells, and pumping the well until other means are provided.
Plate XIII, B, shows a unit pumping power at the property of
the Interstate Oil & Gas Co. near Bartlesville, Okla. This small
power pumps three wells, the one at the power location by means of
the beam and the other two by shackle-line connection from the
wrist pin of the large gear forming part of the power to a jack
at each of the two wells. The three wells pumped are each about
1,300 feet deep and equipped with 2-inch tubing. A stroke of
20 inches is used at a rate of 21 strokes a minute. The wells are
pumped about eight hours a day and the production from the three
wells averages about 80 barrels a day. An 8-horsepower oil engine,
belt-connected for driving, uses 31 to 4 gallons of crude oil a day.
Other types of small-geared powers, run without a beam, are
sometimes used for individual drive by use of counterbalance, but
this type is designed chiefly to operate from two to five shallow wells
by means of shackle lines and jacks.
EQUIPMENT FOR PUMPING GROUPS OF WELLS.
Groups of wells are pumped either by modifications of the beam
pumping system used for individual wells, or by means of jack
plants or powers. In either system shackle lines and jacks are used
to transmit power.
SYSTEMS BASED ON MODIFICATION OF BEAM PUMPING.
Sometimes the power for pumping is transmitted from the beam
at one well to the beam at another well by means of two jacks con-
nected by a shackle line; each jack is connected to the walking
beam by means of a pitman attachment, one beam delivering the
power and the other beam receiving it. Figure 8 is an example.
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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/m1/84/ocr/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.