CN2196698Y

CN2196698Y - Multi-function oil pump

Info

Publication number: CN2196698Y
Application number: CN 93228111
Authority: CN
Inventors: 杨春江
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-05
Filing date: 1993-05-05
Publication date: 1995-05-10
Anticipated expiration: 2003-05-05

Abstract

The utility model relates to a multi-function oil pump for oil wells in oil fields, being composed of a pump cylinder, an escape stop ring piston and an oil inlet valve cylinder. Annular space is formed by a piston outer annular tube and a piston inner annular tube, and three spiral guiding strips are uniformly distributed on an oil sucking channel and the inner annular tube, so that the release of screw threads can be prevented. The oil pump which is provided with a middle channel can realize the multiple functions of the scientific reconnaissance of underground oil layers and oil production, and has the advantages of simple structure, convenient assembly and high work efficiency, being ideal equipment for the modernized development of oil fields.

Description

Multi-function oil pump

The utility model relates to the mechanical oil well pump of a kind of oilfield.

Existing oil and gas industry is used for petroleum production

Formula pump and tubing pump are the intermediate throughholes by plunger, recover the oil by single hole valve body, so have only function of oil recovery.And there is screw thread in the to-and-fro motion of pumping unit, to come off easily and ground installation such as decentralized wellhead need be set when carrying out the science popularization investigation of item oil reservoir such as test pressure water detection, cause the waste on the man power and material, simultaneously, the success rate of science generaI investigation can only be about 30%.Make the investigation of the underground various data in oil field of China become difficulty, restricted the development in oil field.

The purpose of this utility model provides a kind of adaptation oil field modernization development, the generaI investigation of centralized procurement oil, science, the investigation of the various data of end oil reservoir in one, multi-functional, simple in structure, easy to assembly, and can effectively prevent the multifunctional oil-well pump to the dropout of oil pumping polish rod all sites screw thread from swabs.

Oil well pump of the present utility model is realized with following technological scheme.

This oil well pump comprises that pump barrel (4) piston (5) is characterized in that: by pump barrel (4) bottom be threaded, porous valve body (15) is equipped with in inside and the oil-feed valve cylinder (29) of fixed body (28).Pump barrel (4) inside is equipped with and is slidingly matched, and the annular space that the inside and outside wall pipe arranged evenly distributes anticreep annular space valve piston (5) the piston bottom that is welded with three spirality pilot holes with scyewed joint on the inner wall tube outside, and pass that to be contained in oil-feed valve cylinder (29) inner, the endoporus of porous valve body (15), with the endoporus of fixed body (28), the centre have the hollow conduit (30) of through hole that a plurality of resistances that prevent crude oil leakage are housed on the Baltimore groove of the top endoporus of oil-feed valve cylinder (29) to leak cushion rubber 11--14.On the Baltimore groove of the endoporus of fixed body (28), cushion rubber (19--27) is leaked in the resistance that seal action is housed.

This multifunctional oil-well pump is considered the oil recovery function, and having designed by this annular space of anticreep annular space piston (5) that the annular space passage is arranged that has the outer endless tube (6) of endless tube in the piston (7) and piston to constitute is the oil pumping passage of this oil well pump.

The oil pumping polish rod that this multifunctional oil-well pump is considered the pumping wells that thousands of rice is dark to the screw thread in fuel feed pump plunger interval moves back button easily, has designed pilot hole (8) and has become 1.5 ° of rotation directions welding along axis, in piston on the outer wall of endless tube 7.And the internal diameter of the outer endless tube (6) of piston of packing into, weld with this part end.Three spiral grooves that pilot hole (8) forms, binding thread in the to-and-fro motion of pumping unit.

This oil well pump is considered the investigation of the various science data of oilbearing stratum in the oil field development, as: the content of flowing pressure, static pressure, water, thermometry, heat are released difficult problems such as viscous crude, well-flushing, wax removal, input chemical agent, input electrothermal part, have designed the hollow conduit (30) with intermediate throughholes.

This oil well pump is considered sealing and leakage, increases to have designed by on oil-feed valve cylinder (29) upper inside wall and the Baltimore groove on stationary magazine creel (28) endoporus, and resistance leakage cushion rubber is installed.

The utility model compared with prior art, solved original oil pumping polish rod to the screw thread between the pump plunger shaft plunger of the pumping problem that comes off owing to adopted anticreep annular space piston (5) in piston, to weld three spirality pilot holes (28) on the endless tube (7), the annular space that constitutes by endless tube in the piston and outer endless tube, as the passage of crude oil, kept the oil recovery function of crude oil pump.And the intermediate throughholes that runs through whole pump barrel has solved the science generaI investigation of various oilbearing stratums that original oil well pump is beyond one's reach.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model pump barrel sectional view.

1--carries on the back cap, the last stopping leak lid of 2--, the last stopping leak valve of 3--, 4--pump barrel, 5--anticreep annular space piston, the outer endless tube of 6--piston, endless tube in the 7--piston, the 8--pilot hole, stopping leak lid under the 9--, stopping leak valve under the 10--, cushion rubber, 15--porous valve body, 16--steel ball are leaked in the 11--14 resistance, the 17--ball seat, 18--is swivel nut fixedly, and cushion rubber is leaked in the 19--27 resistance, the 28--fixed body, 29--oil-feed valve cylinder, 30--hollow conduit.

Below in conjunction with accompanying drawing a specific embodiment of the present utility model is described.As shown in Figure 1, this oil well pump is whole tube pump form, pump barrel (4) endoporus is processed with engine lathe with highi degree of accuracy boring machine helical thread portion and other step station, just can reach designing requirement, porous valve body (15) can be processed with fixed body (28) lathe and vertical milling machine and reach design with requiring, the more difficult processing and fabricating of oil well pump of the present utility model be anticreep annular space piston (5), the interior endless tube of piston and last stopping leak valve, following stopping leak valve is with being threaded, on the outer wall of interior endless tube, with the steel band of welding procedure with three 2.8 millimeters thick, by the given size of design become 120 ° be distributed in the endless tube outside go up and be welded on by 1.5 ° rotation direction on the endless tube.And the endoporus of the outer endless tube of threading, after weld the end, on being threaded, following stopping leak valve.Carry out rough turn cylindrical then, finish turning cylindrical and grinding machine processing just reach again and want designing requirement.After above technology is finished, screw off stopping leak valve up and down, stopping leak covers under packing in interior endless tube bottom, stopping leak lid on packing on last stopping leak valve top, this piston finishes in addition.The annular space piston (5) that installs each part this part of pump barrel (4) assembling of packing into is machined.

Assembling process of the present utility model is: with porous valve body (15) and fixed body (28) pack in regular turn oil-feed valve cylinder (29) and with pump barrel (4) by scyewed joint together.The first-class anticreep annular space piston rod (5) of going up stopping leak lid valve (2), (3) and following stopping leak lid valve (9), (10) is connected with hollow conduit (30) by box cupling.With the assembly that installs above each part pump barrel (4) of packing into, the cylindrical of hollow conduit (30) is by the endoporus of porous valve body (15) and fixed body (28), and this pump is assembled and finished.

Working principle of the present utility model is:

To install oil-feed valve cylinder (29) pump barrel (4) and be lowered to the oil well given location with oil pipe, the assembly that will install the anticreep annular space piston (5) of hollow conduit (30) is lowered to pump barrel with hollow rod.Adjust stroke, after the various operations such as over-stroke, start pumping unit, go up stopping leak valve (3) and following stopping leak valve (10) sealing when up, steel ball (16) in the porous valve body (15) is opened, crude oil sucks pump barrel (4) bottom, and when descending, steel ball (16) falls back on the ball seat (17), shut in the loop of oil, crude oil is washed upper and lower stopping leak lid (2) and (9) three grooves of annular space by anticreep annular space piston (5) open under the effect of extruding, enter the top of pump barrel (4).Through repeatedly reciprocating action, crude oil rises to ground.

The utility model prevents that the principle that screw thread is threaded off from being:

When pumping unit is descending, resistance during pilot hole (8) the formed groove of crude oil by installing in anticreep annular space piston (5) annular space, become and prevent that screw thread from moving back the power of button, and because of pumping unit when descending the crude oil of this annular space static relatively, lost and returned the button effect, thereby reached the function that prevents that screw thread from threading off.

Pressure measurement of the present utility model, the working principle of water detection is:

By hollow rod and oil well pump intermediate throughholes, instrument manometer, water explorer etc. are dropped into oil reservoir by connecting line, drop into to take out at the appointed time and can obtain needed data.

The oil recovery function of oil well pump of the present utility model is finished by annular space with the function that prevents the screw thread dropout. Test pressure, water detection, well-flushing, wax removal, heat are released the item functions such as viscous crude, input chemical agent and are finished by intermediate throughholes.

Claims

1, a kind of multifunctional oil-well pump, comprise pump barrel (4) piston, (5), it is characterized in that: the oil-feed valve cylinder (29) of porous valve body (15) and fixed body (28) is equipped with in pump barrel (4) bottom with the inside of scyewed joint, the annular space that is slidingly matched and inside and outside wall is arranged is equipped with in pump barrel (4) inside, the anticreep annular space piston (5) of even three the spirality guidance tapes (28) that distribute on inner wall tube, the piston bottom is with being threaded, and pass the endoporus that is contained in the inner porous valve body of forming by a plurality of steel balls and through hole (15) of oil-feed valve cylinder (29), with the centre of the endoporus of fixed body (28) hollow conduit (30) of through hole is arranged, on the groove on the top of oil-feed valve cylinder (29), a plurality of resistances that prevent crude oil leakage are housed leak cushion rubbers (11--14), cushion rubber (19--27) is leaked in the resistance that seal action is housed on the concave groove of the endoporus of fixed body (28).