Pumping unit

Patent · Tue Dec 30 00:00:00 EST 1986

OSTI ID:7187254

Pauls, D A

A pumping unit is described for use at a well having a well head, comprising: support means; a pair of pitman arms, each of the pitman arms having a longitudinal axis and a first end portion and a second end portion; means including crank arm means for causing movement the pitman arms, the means for causing movement connected to the support means and to the first end portion of each of the pitman arms; a first strap having a width of at least inches and including a first end portion and a second end portion; a second strap having a width of at least three inches and including a first end portion and a second end portion, the second strap being separate from and spaced from the first strap; equalizer beam means being separate from each of the pitman arms and extending between the second end portion of each of the pitman arms. The pitman arms and the equalizer beam means cooperate with the first strap and the second strap to minimize the bending stress applied to the means for causing movement during operation of the pumping unit; connection means being separate from the equalizer beam means but engaging the equalizer beam means for use in interconnecting each of the first end portions of the first and second straps to the pitman arms and wherein each of the first and second straps contacts the equalizer beam means; and reciprocating means connected to the second end portions of the first and second straps and adapted to move relative to the well. The reciprocating means includes a polished rod and wherein all portions of the polished rod are positioned at an angle relative to the longitudinal axis of each of the pitman arms.

• Assignee: Jerden Industries, Inc., Garden City, KS
• Patent Number(s): US 4631970
• OSTI ID: 7187254
• Resource Relation: Patent File Date: Filed date 22 Apr 1983
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
ROD PUMPS
DESIGN
OPERATION
BENDING
CONNECTORS
INCIDENCE ANGLE
MANIPULATORS
POSITIONING
SPACE DEPENDENCE
STRESSES
SUPPORTS
WELLHEADS
CONDUCTOR DEVICES
ELECTRICAL EQUIPMENT
EQUIPMENT
LABORATORY EQUIPMENT
MATERIALS HANDLING EQUIPMENT
MECHANICAL STRUCTURES
PUMPS
REMOTE HANDLING EQUIPMENT
WELLS
020300* - Petroleum- Drilling & Production