A kind of integrated pumping unit
Technical field:
The present invention relates to a kind of oil exploitation machinery, relate in particular to a kind of integrated crank oil pumper.
Background technology:
International energy supply conditions day is becoming tight, and Chinese crude oil import amount increases year by year; The national economic development all has higher requirement to the energy, energy consumption, and the world advocated and got into harmonious society the new century, developed safe, energy-conservation, green production process.Along with Oilfield developing, technology constantly develops, and mechanical oil recovery equip ment is from beam pumping unit to no beam pumping unit etc., and is of a great variety, to adapt to the needs of different productive lives.At present; The oil pumper 75% that is used for artificial lift is main with beam pumping unit, is divided into conventional type beam pumping unit, prefix type beam pumping unit, out-phase type beam pumping unit and two horse head type beam pumping unit according to the difference of the structure of the crank quadric chain of horse head.The oil pumper exercise performance of this structural shape is poor, and the energy transmission link is many, function singleness, energy consumption are big, and the ratio of performance to price is low, and the pay(useful) load rate is low; Transfer ginseng and balancing intensity bigger.Simultaneously to have an oil well output low in the part oil field, intermittent recovery, and characteristics such as oil well is densely distributed are produced and are safeguarded that investment is more, and energy consumption is bigger.
Summary of the invention:
Poor to existing oil pumper exercise performance, unit individual well utilization rate of equipment and installations is low, each other balance; Problems such as load fluctuation is big, the present invention provides the sub-district integrated oil pumping centring system, and this oil pumper is served as theme with the light flexible rope; Replace former rigidity energy transferring structure; Pump simultaneously through many mouthfuls of wells in the 50-100m around oil pumper drive of assembly pulley realization, realize a tractor serves several purposes, the zone oil recovery; Do not have special-purpose balance weight, reduced the weight of oil pumper, can come automatically balance each other through the load change of each oil well; Reliable self power rises, pump operation down, test etc. are multi-functional; Have integration, well, machine mechanical balance, reasonable, system is compacter, volume reduces several times; Can realize continuous oil pumping.
For realizing the object of the invention, the technical scheme of being taked is:
A kind of integrated pumping unit comprises oil rig, power transmission, wellbore system.Oil rig comprises that motor, reducer, framework, supporting leg, assembly pulley constitute; Wellbore system comprises support, telescopic well mouth sealing device, well head pressing plate, sleeve pipe and oil well pump; Power transmission mainly is made up of pulley, crank, wire rope, couplet becket bridle; Framework is vertical with well head; Framework and well head place vertical fixing have supporting leg, and the supporting leg top is fixed with branch well pulley, on the framework in the transverse plane be with the reducer output shaft center of circle successively horizontal fixed a plurality of minutes well pulleys are arranged; The lower end of framework is fixed with reducer and motor from top to bottom successively; The output shaft termination of reducer is connected with crank, crank top and motor and the coaxial fixed pulley that is equipped with of reducer, the crank other end be fixed with fixed pulley at conplane movable pulley; Wire rope connects downhole pump; Pass telescopic well mouth sealing device; Walk around the oil rig cantilever tip fixed pulley, be in conplane angle pulley with crank top fixed pulley, behind the branch well pulley on well head supporting leg top, the movable pulley that is locked in crank joins on the becket bridle.
For realizing the object of the invention, the technical scheme of being taked can also be:
On the framework in the transverse plane be with the reducer output shaft center of circle successively horizontal fixed a plurality of minutes well pulleys are arranged, the pulley number depends on well head quantity on every side.
Power transmission does not have special-purpose balance weight, mutual balance between well.
Compared with prior art, the invention has the beneficial effects as follows:
The integrated oil pumping centring system in this sub-district adopts such scheme; Movable pulley is that the center of circle moves in a circle with the output shaft on employing crank and the crank; Drive the characteristics that the flexible actuated element of each well head moves reciprocatingly, realize regional, around an oil pumper drives in the 50-100m many mouthfuls of wells pump simultaneously; A tractor serves several purposes, recover the oil in the zone.Do not have special-purpose balance weight, oil pumper need not to add balance weight, has reduced the weight of oil pumper, can come mutual balance through the load change of each oil well, thereby realize the stress balance of whole system, and motor is done effective merit all the time, improves system effectiveness.Multifunctionality, reliably self power rise, pump operation down, test etc.Integration has been banned balance weight and sucker rod, has realized that system architecture is compact, has simplified, and reduces the weight and volume of oil pumper.Energy-saving and cost-reducing, one-time investment is few.
Description of drawings:
Accompanying drawing 1 is a front view of the present invention;
Accompanying drawing 2 is vertical views of the present invention.
Among the figure: 1 is that branch well pulley, 2 is that couplet becket bridle, 3 is that crank, 4 is that reducer, 5 is that wire rope, 6 is that framework, 7 is that supporting leg, 8 is that fixed pulley, 9 is that support, 10 is that telescopic well mouth sealing device, 11 is that angle pulley, 12 is that well head pressing plate, 13 is that well head, 14 is that sleeve pipe, 15 is that motor, 16 is an oil well pump.
The specific embodiment:
Be described in detail embodiments of the invention below in conjunction with accompanying drawing.
By Fig. 1 and Fig. 2, the oil rig of this integrated pumping unit is made up of motor 15, reducer 4, framework 6, supporting leg 7, assembly pulley.Well head pressing plate 12 1 side vertical fixing have support 9, are connected with top sheave 8, angle pulley 11 on the support 9; Vertical fixing has a plurality of supporting legs 7 on the oil pumper framework 6, and oil pumper need not the basis, saves the infrastructure expense of oil pumper greatly; On the framework in the transverse plane be with the reducer output shaft center of circle successively horizontal distribution a plurality of minutes well pulleys 1 are arranged, divide well pulley 1 to be fixed on the supporting leg 7.The lower end of framework is fixed with motor 15 and reducer 4 successively, and the output shaft termination of reducer is connected with crank 3, and the crank upper end is connected with and divides well pulley 1 at conplane movable pulley; Hanging is connected downhole pump 16, telescopic well mouth sealing device 10 with the flexible actuated element wire rope 5 at well head center, walks around fixed pulley 8, angle pulley 11 successively, divides the movable pulley that is locked on the crank behind the well pulley 1 to join on the becket bridle 2; Adopt movable pulley on the crank 3 to drive the characteristics that telescopic well mouth sealing device 10 and downhole pump 16 on the wire rope 5 pump, the crank circular motion is converted into the reciprocating motion of flexible drive, banned sucker rod, walking beam and balance weight simultaneously; Reduce the load and the weight of oil pumper; So just realize doubling maximum stroke, thereby improved exercise performance, reduced power consumption; The pay(useful) load rate increases, and makes oil well pump reach the lifting purpose.
Can be in joining becket bridle 2 unreeves 5, pump down during operation, test etc., all the other wells can continue oil recovery.The length of the keyed end through changing wire rope 5 when regulating stroke realizes that the jig frequency of only a few is regulated through changing the gearratio of reducer, just can realize not shutting down adjusting stroke, jig frequency.