CN200968202Y

CN200968202Y - Hydraulic oil production apparatus

Info

Publication number: CN200968202Y
Application number: CN 200620094148
Authority: CN
Inventors: 叶少华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-16
Filing date: 2006-11-16
Publication date: 2007-10-31
Anticipated expiration: 2016-11-16

Abstract

The utility model discloses a hydraulic oil extraction device, which comprises a ground hydraulic power source providing the high-temperature high-pressure power liquid and a ground heater; a power-liquid tube is connected with a stroke reversing valve that is enclosed on a piston rod inside the bilateral hydraulic pump through a hollow oil pumping rod arranged inside the oil tube, the piston rod having a piston on each end is arranged inside a pump cylinder, the upper part of the upper pump cavity is provided with a upper pump outlet valve and a lower pump outlet valve that are connected with the oil tube and an outlet end of a lower pump entry valve that is arranged at the lower part of the lower pump cavity; the entry end of the upper outlet valve is connected with the outlet end of the upper entry valve arranged on the lower edge of the lower entry valve, the drainage end of the power liquid pipeline is connected with a passage of the stroke reversing valve, the drainage end is connected with the oil pipe through a pump heating tail pipe. When the upper pump drains the oil, the lower pump absorb the oil; and while the lower pump drains the oil, the upper pump absorbs the oil so as to send the crude oil to the ground with the alternative and recycling operation, which improves the oil extraction efficiency and is suitable for all oil varieties.

Description

Hydraulic oil producing device

Technical field

The utility model relates to a kind of oil exploration equipment, relates in particular to a kind of hydraulic oil producing device, is applicable to all kinds of oil extractions in all kinds of oil wells, inclined shaft, horizontal well, offshore platform and oil field.

Background technology

Viscous crude occupies certain ratio in the petroleum resources in the whole world, the characteristics of this class oil are that asphaltenes and colloid are higher, and condensation point height, viscosity are big, therefore, have increased very big difficulty to oil exploitation.China's viscous crude distribution of resource is also very wide, accounts for more than 20% of land oil total resources.The way that solves at present this difficult problem is in oil pumping machine oil pumping, also will adopt other Special Equipment and measure that the crude oil of well post is carried out viscosity reduction.As methods such as hot-water flooding in well, deep fat or chemical viscosity reduction agent.This has not only increased cost of oil production, and production efficiency is also lower simultaneously.In addition, traditional oil pumper causes inefficiency owing to its reasons in structure, the movement parts serious wear, and application life is short, and the fault rate height causes the situation of shutdown maintenance also to happen occasionally.Although traditional oil pumper exists described all drawbacks and many defectives not fully up to expectations, but up to the present also do not have comparatively ideal mining equipment to replace, cause use tradition oil pumper that oil recovery enterprise has no way out year after year, always using till today day by day.

The utility model content

The utility model provides a kind of hydraulic oil producing device at above-mentioned problems of the prior art, and the oil recovery efficiency height, the scope of application is wide, function is many, wearing and tearing are little, and fault rate is low, and long service life obviously reduces cost of winning and running cost.

Extracting device of oil of the present utility model:

Comprise a ground hydraulic power source of the high temperature and high pressure flow body medium being provided for the under-well bi-directional hydraulic pump, the ground heater, link to each other with the upper end of hollow rod in placing oil pipe by the power fluid pipeline, its lower end links to each other with the pump head of bidirectional hydraulic pump, described bidirectional hydraulic pump comprises that the piston rod that its upper and lower side has a piston places in the pumping cylinder, the return of stroke valve pocket is loaded on the piston rod and with the pumping cylinder wall and combines closely, and the top of last pump chamber is provided with the pump discharge valve from bottom to top, following pump discharge valve also links to each other with the port of export of oil pipe with the following pump intake valve of being located at down pump chamber bottom respectively by passage; The arrival end of last pump discharge valve links to each other by the port of export of passage with the last pump intake valve of being located at down pump intake valve bottom; The input of weary power fluid pipeline links to each other with a passage of return of stroke valve, and output communicates with oil pipe through pump heating tail pipe.

Described device also comprises an oil well electric heater, it has an electrical heating switch board, through output low pressure dipulse high-current dc power supply after the transformation rectification is connected on the oil pipe of mutually insulated and the ground power fluid pipeline that links to each other with hollow rod respectively with cable on, and the formation loop.

Be provided with the insulation centralizer between described hollow rod and the oil pipe, well head place in upper end is provided with the insulated enclosure device.

Power fluid pipeline between described ground heater and the hollow rod is provided with the insulation tube joint.

The lower end of described hollow rod is to link to each other by the hydraulic pressure connection-peg that cuts the platform taper with the pump head of under-well bi-directional hydraulic pump.

Be provided with reverse preheating one way valve between described power fluid pipeline and the weary power fluid pipeline.

Laterally have the draining hole at corresponding position on the pump head of described bidirectional hydraulic pump with hollow rod lower end hydraulic pressure connection-peg.

The utility model has the advantages of as follows:

The utility model compared with prior art owing to adopted ground hydraulic power source, ground heater, also set up an oil well electric heater and provide the operation power heating in crude oil for the under-well bi-directional hydraulic pump; The bidirectional hydraulic pump makes up and down under the effect of stroke reversal valve, and pump replaces continuous oil extraction, ground motor working current translation, electrical network there is not impact, the experiment proved that have simple in structure, cancelled the ground oil pumper, operation part wearing and tearing are little, prolonged application life, fault rate is low, is convenient to install, operates and management, has obviously reduced equipment investment and running cost; The bidirectional hydraulic pump is because of being hydraulic-driven, and ground installation can the many wells of a machine, are applicable to all kinds of oil wells, inclined shaft, horizontal well and offshore platform exploitation, and thin oil, viscous crude can; Can also carry out pipeline start up by preheating to cool well, can be to the omnidistance homogeneous heating of well post, the viscosity reduction wax removal improves pump efficiency, 1/2 of the not enough traditional oil pumper of its power consumption, and oil recovery efficiency improves 40-50%, has reduced cost for oil production.Crude oil when proposing hollow rod in it is gone in the oil well from the draining orifice flow, and is free from environmental pollution, is convenient to construction operation.

Description of drawings

Fig. 1 is a main TV structure schematic diagram of the present utility model.

Fig. 2 is the partial enlarged drawing of hydraulic tube and pump head connecting portion among Fig. 1.

Fig. 3 is the dipulse oscillogram of oil well electric heater output low pressure dipulse high-current dc power supply.

The specific embodiment

Embodiment 1

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, ground hydraulic pump 1 as shown in Figure 1 links to each other with ground heater 2 by the power fluid pipeline, the output of ground heater 2 is by the power fluid pipeline, insulation tube joint 3 links to each other with the upper end of hollow rod 5 in placing oil pipe 19, pass well head insulated enclosure device 4, hollow rod 5 is provided with insulation centralizer 6, the lower end links to each other as shown in Figure 2 with the pump head of the bidirectional hydraulic pump 18 of down-hole by the hydraulic pressure connection-peg 7 that cuts the platform taper, bidirectional hydraulic pump 18 comprises pumping cylinder, the piston rod 11 that two ends have upper piston 10 and lower piston 12 places pumping cylinder, can be according to last lower piston 10,12 travel position realizes that two four-way return of stroke valves 16 that switch fluid passage are set on the piston rod 11, periphery and pumping cylinder inwall keep closely cooperating, it is installed in the middle part of pumping cylinder wall, space between upper piston 10 and the last pump discharge valve 9 is last pump chamber 24, it below it and between the return of stroke valve 16 last hydraulic cylinder 25, hydraulic cylinder 27 under between return of stroke valve 16 and the lower piston 12 being, the cavity that forms between the following pump intake valve 13 of lower piston 12 and its bottom is following pump chamber 26, following pump discharge valve 8 is located at the top of pump discharge valve 9, its port of export can communicate with oil pipe 19, arrival end links to each other by the port of export of passage with following pump intake valve 13, the inlet of following pump intake valve 13 communicates with oil well crude oil by passage, the port of export of last pump discharge valve 9 communicates with oil pipe 19 by passage, its arrival end links to each other by the port of export of passage with the last pump intake valve 14 of being located at down pump intake valve 13 bottoms, and the inlet of last pump intake valve 14 communicates with oil well crude oil.The input of power fluid pipeline links to each other with a passage of return of stroke valve 16, and the outlet opening of weary power fluid pipeline links to each other with another passage of return of stroke valve 16, its outlet side communicates with oil pipe 19 by crossing pump heating tail pipe 15, be provided with a reverse preheating one way valve 17 between the outlet opening of the input of power fluid pipeline and weary power fluid pipeline, described weary power fluid is meant the power fluid of finishing merit; The oil well electric heater is that two cables 20 by electric heater switch board 21 output are connected to respectively on the ground power fluid pipeline that well head place oil pipe 19 walls of mutually insulated link to each other with hollow rod 5, described oil well electric heater is that output low pressure dipulse high-current dc power supply returns and forms the loop through hollow bar 5 and the oil pipe tubing string taken out after the 21 transformation rectifications of electrical heating switch board, because of the sectional area of its hollow rod 5 sectional area less than oil pipe 19, so make hollow rod 5 produce overcurrent and generate heat, and then give power fluid in the hollow rod and the oil well well liquid in the oil pipe 19 with thermal energy conduction.Thereby make crude oil under the state of optimum temperature and viscosity, successfully be gone out the ground flow circuit and a part is sent in the ground hydraulic pump liquid pool by lifting.Laterally be provided with in the draining hole 23 that is beneficial to draining when extracting hollow rod 5 at top corresponding site on the pump head of described two-way liquid pump 18 with the hydraulic pressure connection-peg 7 of hollow rod 5 lower ends.

Embodiment 2

Do not establish oil well electric heater and corresponding insulation union 3, insulated enclosure device 4 and insulation centralizer 6, all the other are with embodiment 1.

When the utility model uses, the water under high pressure or the high pressure crude oil that will start after ground hydraulic pump 1 will pressurize enter ground heater 2 along pipeline, fluid media (medium) after the heating is carrying high pressure-temperature through insulation union 3, well head insulated enclosure device 4, enter in the hollow rod 5 in the well post, and along the hydraulic joint 7 of hollow rod 5 bottoms, the power fluid pipeline, a passage that enters the return of stroke valve 16 in the bidirectional hydraulic pump assembly 18 enters hydraulic cylinder 25, and to make it become high pressure chest promotion upper piston 10 up, the chamber appearance of last pump chamber 24 diminishes, pressure raises, and the crude oil in it is forced to back down pump discharge valve 9 and enters in the oil pipe 19; This moment, lower piston 12 was also up thereupon, the chamber appearance of following hydraulic cylinder 27 diminishes, the crude oil that the weary power fluid of finishing merit in the chamber another passage by return of stroke valve 16 is got back to oil pipe 19 and hydraulic pump 18 liftings through pump heating tail pipe 15 is integrated, continuation is by lifting, this holds progressively increase in chamber of pump chamber 26 at present, pressure reduces and forms negative pressure, crude oil in the oil well progressively is drawn into down in the pump chamber 26 by following pump intake valve 13, upper piston 10 goes upward to top dead centre, lower piston 12 also arrives top dead centre simultaneously, thrust by piston, promote 16 commutations of return of stroke valve, change the high-low pressure interface of two hydraulic cylinders up and down, make down hydraulic cylinder 27 become high pressure chest, lower piston 12 drives piston rod 11, upper piston 10 moves downwards, at this moment, the chamber appearance of following pump chamber 26 progressively diminishes, pressure raises, and following pump intake valve 13 cuts out, and crude oil backs down down pump discharge valve 8 in the chamber, enter in the oil pipe 19, the chamber of going up hydraulic cylinder 25 simultaneously holds and to diminish, and weary power fluid is by the low pressure port of return of stroke valve, flows into through pump heating tail pipe 15 in the oil pipe 19 that is contained on the pump, it is big that the chamber of last pump chamber 24 holds change, form negative pressure in the chamber, crude oil backs down pump intake valve 14 in the well, in pipeline enters pump chamber 24, wait for 16 commutations of return of stroke valve, prepare next reciprocal stroke, on therefore going round and beginning again, following pump replaces the reciprocating motion of oil extraction oil suction, continuously crude oil is given rise to ground.Send into the ground flow circuit through crude exports 22.If can make the oil well electric heater during heavy crude producing devotes oneself to work.

Hydraulic pump 1 described in the utility model and in the past the pressure and temperature of the HTHP power fluid carried of ground heater 2 be all multifactor its concrete value ranges of determining such as well depth, impedance, former oil quality, production fluid discharge capacity, temperature, water content according to the down-hole.

Claims

1, hydraulic oil producing device, comprise a ground hydraulic power source of the high temperature and high pressure flow body medium being provided for under-well bi-directional hydraulic pump (18), ground heater (2), upper end by the power fluid pipeline hollow rod (5) interior with placing oil pipe (19) links to each other, its lower end links to each other with the pump head of bidirectional hydraulic pump (18), it is characterized in that described bidirectional hydraulic pump (18) comprises that its upper and lower side has piston (10), (12) piston rod (11) places in the pumping cylinder, return of stroke valve (16) is set in piston rod (11) and upward and with the pumping cylinder wall combines closely, and the top of last pump chamber (24) is provided with pump discharge valve (9) from bottom to top, following pump discharge valve (8) also links to each other with the port of export of oil pipe (19) the following pump intake valve (13) following with being located at down pump chamber (26) respectively by passage; The arrival end of last pump discharge valve (9) links to each other by the port of export of the passage last pump intake valve (14) following with being located at down pump intake valve (13), the outlet side of weary power fluid pipeline links to each other with a passage of return of stroke valve (16), and outlet side communicates with oil pipe (19) through pump heating tail pipe (15).

2, device according to claim 1, it is characterized in that also comprising an oil well electric heater, it has an electrical heating switch board (21), through output low pressure dipulse high-current dc power supply after the transformation rectification be connected on respectively with cable (20) oil pipe (19) of mutually insulated with ground power fluid pipeline that hollow rod (5) links to each other on and through formation loop, down-hole.

3, device according to claim 1 is characterized in that being provided with between described hollow rod (5) and the oil pipe (19) insulation centralizer (6), and well head place in upper end is provided with insulated enclosure device (4).

4, device according to claim 1 is characterized in that the power fluid pipeline between described ground heater (2) and the hollow rod (5) is provided with insulation tube joint (3).

5, device according to claim 1 is characterized in that the lower end of described hollow rod (5) is to link to each other by the hydraulic pressure connection-peg (7) that cuts the platform taper with the pump head of under-well bi-directional hydraulic pump (18).

6,, it is characterized in that being provided with reverse preheating one way valve (17) between described power fluid pipeline and the weary power fluid pipeline according to each described device among the claim 1-5.

7, device according to claim 1 is characterized in that laterally having draining hole (23) at the corresponding position with hollow rod (5) lower end hydraulic pressure connection-peg (7) on the pump head of described bidirectional hydraulic pump (18).