CN201090418Y

CN201090418Y - Hydraulic pressure-driven gear oil well pump

Info

Publication number: CN201090418Y
Application number: CNU200720027620XU
Authority: CN
Inventors: 马宝忠; 史登杰; 高承强
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-17
Filing date: 2007-09-17
Publication date: 2008-07-23
Anticipated expiration: 2017-09-17

Abstract

The utility model discloses a hydraulic driving gear oil pump, which is composed of a joint tube 1, a lower joint 2, and an oil outlet joint 3. The utility model is characterized in that: a hydraulic pressure motor 4 is arranged at upper part in the cavity of the joint tube 1, a gear pump 5 is arranged at lower part in the cavity, the lower joint 2 is rotatably arranged fixedly at lower end of the gear pump 5, a hydraulic pressure motor rotating shaft 6 is connected with the driving gear shaft 8 of the gear pump 5 by a coupling 7, the flange at lower end of the hydraulic pressure motor 4 and the upper cover plate of the gear pump 5 are integrated fixedly by a connection body 10, the upper end of the hydraulic pressure motor 4 is connected with a circulation oil tube 11. The hydraulic driving gear oil pump is not provided with a sucker rod, thereby solving the problem of biased abrasion of rod tube so as to prolong repair period of oil well, the utility model is in particular suitable for inclined well and horizontal well, moreover the utility model has the advantages of low energy consumption, high pumping efficiency, small size, corrosion resistance, and wear resistance, and also solving general problems of sand locking, wax content, and high viscosity pumping. The utility model is widely used in oil pumping equipment in oil field.

Description

Hydraulic driving gear oil-well pump

Technical field

The utility model relates to the improvement of oil well pump in a kind of oil field, particularly a kind of hydraulic driving gear oil-well pump.

Background technique

At present, the oil recovery machiner that uses on the oil field mainly contains two kinds: a kind of is plunger oil-well pump, i.e. the down-hole deep-well pump; The 2nd, rod-type drive screw pump.Plunger oil-well pump comprises that pump barrel, sucker rod, upper and lower valve and urceolus constitute, by the upper and lower mobile oil pumping of plunger; Rod-type drive screw oil well pump comprises that housing, sucker rod, rotor, oil pick-up tube constitute, and rotates under the drive of ground power equipment by sucker rod, drives the rotor rotation oil pumping.More than two kinds of oil well pumps can effectively pump, so be employed always, but also come with some shortcomings main deficiency: the one, easily produce rod and tube partial-wear, when being used in inclined shaft or horizontal well especially, this eccentric wear can be obvious especially, influences pump efficiency and working life; The 2nd, equipment volume is big, investment is big, energy consumption is high; The 3rd, the abrading section of oil well pump is many, and corrosion resistance is low, intensity is low, often can not use because of serious wear, and maintenance difficult; The 4th, the exploitation of incompatibility high viscosity oil well.For overcoming the above problems, in recent years, a lot of enterprises both domestic and external are all dropping into a large amount of financial resources, manpower research and development rodless pumping operation machinery, to satisfy the needs of inclined shaft, horizontal well and heavy oil production.Existing rodless pumping operation machinery mainly contains electric submersible centrifugal pump, electric oil submerged screw pump, hydraulic piston pump, turbine pump etc.These rodless pumping operations machinery is because no bar, so can overcome the rod and tube partial-wear problem, but because of electric submersible centrifugal pump only is applicable to the exploitation of the moisture big discharge capacity oil well of height, is lower than the oil well of 50 cubic metres/every day for well yield, can't use because of its efficient is low; Electric oil submerged screw pump, the influence of reason factors such as down-hole retarder reliability is not high, oil-submersible cable expense height in being subjected to also makes stripper well be difficult to accept; Hydraulic piston pump is to use the ground suction booster that power fluid is driven the plunger pump work of its underpart by the oil pipe motor of being driven underground, the well liquid that plunger pump is discharged is with after the weary power fluid of piston motor discharge mixes, be lifted to the ground petroleum pipeline by the oil jacket annular space, this oil production method once was the main oil production method that is only second to pumping unit in the U.S. during the 70-80 age, China also once used in oil fields such as triumph, Jiang-Han Area the eighties, to the later stage nineties, hydraulic piston pump also withdraws from the Domestic market.Therefore, for now, yet there are no and to solve the rod and tube partial-wear problem, can be applicable to inclined shaft, horizontal well again, can also be applicable to the report of the oil well pump of thickened oil recovery.

Summary of the invention

The purpose of this utility model is to provide a kind of can not only overcome the rod and tube partial-wear problem, and can simplify the oil pumping pump structure, reduce equipment volume and investment, anti-corrosion, wear-resisting, anti-sticking, long service life are specially adapted to inclined shaft, horizontal well, and the hydraulic driving gear oil-well pump of thick oil well exploitation.

For reaching above purpose, the technological scheme that the utility model adopted is: this hydraulic driving gear oil-well pump, by adapter, lower contact, delivery connection constitutes, delivery connection rotation is fixed on adapter suitable for reading, it is characterized in that establishing oil hydraulic motor at the chamber internal upper part of taking over, gear pump is established in the bottom in the chamber of taking over, the lower contact rotation is fixed on the lower end of gear pump, the oil hydraulic motor rotatingshaft is connected with the driving gear shaft of gear pump by coupling, the lower end flange plate of oil hydraulic motor is by being bolted to the top of connecting body, the upper cover plate of gear pump is fixed on the bottom of connecting body by corresponding bolts, the last termination circulating pipe of oil hydraulic motor, and by the last suction booster of circulating pipe connection, suction booster can be located on the ground, suction booster is with the recycle oil supercharging, send into the oil hydraulic motor filler opening by circulating pipe, and oil hydraulic motor is rotated, the oil hydraulic motor rotatingshaft is by the rotation of the driving gear in the coupling driven gear pump, driving gear and driven gear engagement are rotated, thereby top with the oily suction gear pump of gear pump bottom, continuous operation, oil can upwards give rise to ground in the chamber of taking over.The utility model is also implemented by following measure: described connecting body, by body and fixedly ear constitute, the intracavity diameter of body and the outer diameter of coupling adapt, fixedly the ear symmetry establishes four pairs, be separately fixed on the outer wall of upper and lower mouthful of body, can be made as an integral body with body, be oily passage between the adjacent fixed ear, rises from cross oily passage from the make progress oil of lifting of gear pump; Described gear pump, by frame, upper cover plate, bottom plate, driving gear, driven gear, oil suction chamber, go out oil pocket and constitute, the driving gear shaft of driving gear is located at the center portion of frame, with the oil hydraulic motor rotatingshaft on an axis, driven gear departs from the central axis of frame, mesh with driving gear, main, driven gear engagement is rotated, in oil suction chamber, form negative pressure, establish oil inlet hole on the low cover plate in oil suction chamber, carry out in well, pumping, in going out oil pocket, form malleation, establish upper oil hole on the upper cover plate in going out oil pocket, with the oil lifting that makes progress.

The beneficial effects of the utility model are: compare with the oil well pump of present use, following tangible advantage is arranged: 1, because of not establishing sucker rod, so solved the rod and tube partial-wear problem, prolonged the turn(a)round of oil well significantly, be specially adapted to inclined shaft and horizontal well; 2, energy consumption is low, pump efficiency is high, equipment volume is little; 3, the gear pump discharge capacity is big, corrosion-resistant, wear-resistant.Also solve the sand card, contained common knotty problem cured, the high viscosity oil pumping, can be widely used in the pumping unit in oil field.

Description of drawings

Fig. 1 is the utility model structure cross-sectional schematic vertically.

Fig. 2 is the utility model connecting body schematic top plan view.

Fig. 3 is that the utility model is along Fig. 2 B-B cross-sectional schematic.

Fig. 4 is the utility model gear pump structure schematic perspective view.

Fig. 5 is that the utility model is along Fig. 4 A-A cross-sectional schematic.

Embodiment

Make the utility model with reference to accompanying

drawing

1,2,3,4,5.This hydraulic driving gear oil-well pump, by taking over 1, lower contact 2, delivery connection 3 constitutes, delivery connection 3 rotation be fixed on take over 1 suitable for reading on, it is characterized in that establishing oil hydraulic motor 4 at the chamber internal upper part of taking over 1, gear pump 5 is established in the bottom in the chamber of adapter 1, lower contact 2 rotations are fixed on the lower end of gear pump 5, oil hydraulic motor rotatingshaft 6 is connected with the driving gear shaft 8 of gear pump 5 by coupling 7, the lower end flange plate of oil hydraulic motor 4 is fixed on the top of connecting body 10 by bolt 9, the upper cover plate of gear pump 5 is by corresponding bolts 9 ' the be fixed on bottom of connecting body 10, the last termination circulating pipe 11 of oil hydraulic motor 4, and pass through circulating pipe 11 connections and go up suction booster.Described connecting body 10, by body 10a and fixedly ear 10b constitute, the outer diameter of the intracavity diameter of body 10a and coupling 7 adapts, fixedly ear 10b symmetry establishes four pairs, be separately fixed on the outer wall of upper and lower mouthful of body 10a, can be made as an integral body with body 10a, be oily path 10 c between the adjacent fixed ear 10b; Described gear pump 5, by frame 5a, upper cover plate 5b, bottom plate 5c, driving gear 5d, driven gear 5e, oil suction chamber 5f, going out oil pocket 5g constitutes, the driving gear shaft 8 of driving gear 5d is located at the center portion of frame 5a, with oil hydraulic motor rotatingshaft 6 on an axis, driven gear 5e departs from the central axis of frame 5a, mesh with driving gear 5d, main, driven gear 5d, 5e meshes rotation, in oil suction chamber 5f, form negative pressure, in going out oil pocket 5g, form malleation, establish oil inlet hole 5m on the bottom plate 5c in oil suction chamber 5f, establish upper oil hole 5n on the upper cover plate 5b in going out oil pocket 5g.

Claims

1. hydraulic driving gear oil-well pump, by taking over (1), lower contact (2), delivery connection (3) constitutes, delivery connection (3) rotation is fixed on adapter (1) suitable for reading, it is characterized in that establishing oil hydraulic motor (4) at the chamber internal upper part of taking over (1), gear pump (5) is established in the bottom in the chamber of taking over (1), lower contact (2) rotation is fixed on the lower end of gear pump (5), oil hydraulic motor rotatingshaft (6) is connected with the driving gear shaft (8) of gear pump (5) by coupling (7), the lower end flange plate of oil hydraulic motor (4) is fixed on the top of connecting body (10) by bolt (9), the upper cover plate of gear pump (5) is fixed on the bottom of connecting body (10), the last termination circulating pipe (11) of oil hydraulic motor (4) by corresponding bolts (9 ').

2. hydraulic driving gear oil-well pump according to claim 1, it is characterized in that described connecting body (10), by body (10a) and fixedly ear (10b) constitute, the outer diameter of the intracavity diameter of body (10a) and coupling (7) adapts, fixedly ear (10b) symmetry establishes four pairs, being separately fixed on the outer wall of upper and lower mouthful of body (10a), can being made as an integral body with body (10a), was oily passage (10c) between the adjacent fixed ear (10b).

3. hydraulic driving gear oil-well pump according to claim 1, it is characterized in that described gear pump (5), by frame (5a), upper cover plate (5b), bottom plate (5c), driving gear (5d), driven gear (5e), oil suction chamber (5f), going out oil pocket (5g) constitutes, the driving gear shaft (8) of driving gear (5d) is located at the center portion of frame (5a), with oil hydraulic motor rotatingshaft (6) on an axis, driven gear (5e) departs from the central axis of frame (5a), mesh with driving gear (5d), establish oil inlet hole (5m) on the bottom plate (5c) in oil suction chamber (5f), establish upper oil hole (5n) on the upper cover plate (5b) in going out oil pocket (5g).