CN2692388Y

CN2692388Y - Steam negative pressure pump

Info

Publication number: CN2692388Y
Application number: CN 200420010734
Authority: CN
Inventors: 武炬; 何美文
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-26
Filing date: 2004-04-26
Publication date: 2005-04-13
Anticipated expiration: 2014-04-26

Abstract

The utility model relates to a steam negative pressure pump, comprising an inner working barrel and an outer working barrel. The inner working barrel and the outer barrel are both hollow tubes, which are respectively provided with joints at the upper end. A spout is inward sleeved in the upper contact of the inner working barrel. An energy converter is inward sleeved in the inner working barrel under the nozzle of the spout. The lower part of the inner working barrel is provided with an oil outlet hole. A circular space is formed by the nozzle of the spout and the inner working barrel, and the walls of the inner working barrel and the outer working barrel correspondingly to the circuit space are provided with pore canals which can be inserted into oil inlet pipes. The lower end of the outer working barrel is sealed by a filament plug. When processing the viscous oil exploitation, the high pressure steam is injected from the spout of the steam negative pressure pump and jetted out at a very high speed from the nozzle of the spout. In this way, a definite negative pressure is formed in the circular space formed by the nozzle of the spout and the inner working barrel. The viscous oil in the oil layer is sucked into the energy converter through the oil inlet pipe of the oil inlet pore canal to do the energy converting and make the velocity energy converted into the pressure energy, in this way, the viscous oil is raise to the ground by pressing into the circular space of the inner working barrel and the outer working barrel through the oil outlet hole.

Description

A kind of steam negative pressure pump

Technical field: the utility model relates to a kind of steam negative pressure pump, belongs to the heavy crude petroleum exploitation, technical field of tools under the production well of exploitation of high temperature hot spring and coal-seam gas.

Background technique: what thickened oil recovery was at present adopted mainly is tubing pump, and it is made up of inside and outside working barrel, and urceolus is a cylindrical liner plug cock cover, and interior working barrel is a plunger.Outside bright and clean, inner hollow, there are valve seat and valve ball in two ends up and down, and top and sucker rod join.Oil well pump and outer working tube and oil pipe join.When work, pumping unit drives sucker rod and moves up and down, and drives piston up-down in the oil well pump simultaneously, extracts crude oil out.This pump can only folk prescription to extraction crude oil upwards, can not be from ground steam injection in well, water and wet goods.The tubing pump steam injection of adopting is at present handled up, and first operation is lowered to pit shaft with the steam injection tubing string, and elevated temperature heat steam is injected the stratum, annotate vexed week of closing well behind the fortnight in a week, operation trips out steam injection string then, is lowered to mechanical oil well pump and oil pump tubular column, machinery oil pumping exploitation.Three months or be one half a year and handle up the cycle.Thickened oil recovery high temperature viscosity reduction is the most effective exploitation means commonly used, and existing oil well pump can not directly take the viscosity reduction measure to satisfy the production demand.For this reason, the problem of the existence of thickened oil recovery at present is as follows: 1, discontinuous running need remove pump, the operating cost height; 2, pumping unit sand card; 3, need electric heating tube down, belong to the highly energy-consuming exploitation; 4, maintenance management expense height; 5, output and pump efficiency are low; 6, the operation initial stage can not be amplified producing pressure differential production to greatest extent, thereby may lose best exploitation opportunity.

Summary of the invention: the utility model be at the need that tubing pump in the present thickened oil recovery exists periodically exploit, easy deficiency such as sand card, design a kind of realize carrying out thickened oil recovery continuously, reduce operating cost, improve a kind of steam negative pressure pump of thickened oil recovery efficient.

The purpose of model utility realizes by following measure:

A kind of steam negative pressure pump, by interior, outer working tube is formed, in, outer working tube is hollow tube, its upper end is separately installed with joint, liner one jet pipe in the upper connection of interior working barrel, liner one enegrgy converter on the interior working barrel under the nozzle of jet pipe, on the enegrgy converter, following two-part are cylindrical chamber, the middle part is the frustoconic shape chamber, bottom at interior working barrel has oil outlet, in the annular space that nozzle and interior working barrel with jet pipe form is corresponding, have the duct that can insert oil inlet pipe on the wall of outer working tube, the lower end of outer working tube is sealed by plug.

When carrying out thickened oil recovery, high pressure steam is injected from the jet pipe of steam negative pressure pump, and from its nozzle, spray with high speed, like this, in the annular space that nozzle and interior working barrel with jet pipe form, form certain negative pressure, viscous crude in the oil reservoir just is inhaled into enegrgy converter by the oil inlet pipe in the oil-feed duct and carries out energy interchange, can be converted to the pressure energy to speed, and viscous crude is pressed into inside and outside working barrel through oil outlet annular space is lifted ground.

The invention effect: 1, this kind pump is applicable to each stage of thickened oil recovery.Handle up between the cycle operation that does not need to remove oil pipe He take out bar two gas injections.When needs were annotated vapour, once head valve just can restart to annotate vapour, had annotated behind the steam once the operation that can drive a well again of well head gate, and one side has been saved operating cost like this, has also won the time of striving for high yield on the other hand.

2, this pump life-span long, generally can keep the 2-3 fixed tubular column.

3, this pump can be realized negative pressure production, so can amplify producing pressure differential to greatest extent, improve oil well yield, particularly in preceding several notes vapour at thick oil well operation initial stage are handled up the cycle, the peak value output of thick oil well can be improved greatly, and the time fecund oil of peak value output can be prolonged.

4, because steam is (gas) vapour source, be again thermal source, can satisfy the heating viscous crude fully, reduce the needs of its viscosity, therefore needn't following again other heating plants.

5, do not move up and down and rotary component in this steam negative pressure pump, and oil reservoir output liquid is not by the valve opening of gas lift valve and the nozzle of steam negative pressure pump, so this pump has very strong prop-carrying capacity, therefore for thick oil well, particularly special thick oil well and super thick oil well are the artificial lift tubing strings of unique discharge sand and sand control card.

Embodiment: Fig. 1 is a structural representation of the present utility model, below in conjunction with accompanying drawing the utility model is described further.

As shown in Figure 1, the utility model is by by interior, outer working tube is formed, in, outer working tube is hollow tube, its upper end is separately installed with upper connection 1 and 2, liner one jet pipe 3 in the upper connection 1 of interior working barrel 10, liner one enegrgy converter 9 on the interior working barrel 10 under the nozzle of jet pipe 3, on the enegrgy converter 9, following two-part are cylindrical chamber, the middle part is the frustoconic shape chamber, have oil outlet 15 in the bottom of interior working barrel, in the annular space that forms with the nozzle of jet pipe 3 and interior working barrel 10 7 is corresponding, outer working tube 10, have the duct 5 that can insert oil inlet pipe on 11 the wall, the lower end of outer working tube is by plug 16 sealings.

When carrying out thickened oil recovery, high pressure steam is injected from the jet pipe 3 of steam negative pressure pump, and from its nozzle, spray with high speed, like this, in the annular space 7 that nozzle and interior working barrel 10 with jet pipe 3 form, form certain negative pressure, viscous crude in the oil reservoir just is inhaled into enegrgy converter 9 by the oil inlet pipe in the oil-feed duct 5 and carries out energy interchange, can be converted to the pressure energy to speed, and viscous crude is lifted ground through the annular space that oil outlet 15 is pressed into inside and outside working barrel 10,11.

In addition, oil-feed duct 5 can be a word, cross or plural duct.

Claims

1, a kind of steam negative pressure pump, by interior, outer working tube is formed, in, outer working tube (10), (11) be hollow tube, its upper end is separately installed with upper connection (1) and (2), it is characterized in that: liner one jet pipe (3) is gone up in the upper connection (1) in interior working barrel (10), interior working barrel (10) under the nozzle of jet pipe (3) is gone up liner one enegrgy converter (9), on the enegrgy converter (9), following two-part are cylindrical chamber, the middle part is the frustoconic shape chamber, have oil outlet (15) in the bottom of interior working barrel, in the annular space (7) that nozzle and interior working barrel (10) with jet pipe (3) form is corresponding, outer working tube (10), (11) have the duct (5) that can insert oil inlet pipe on the wall, the lower end of outer working tube is sealed by plug (16).

2, steam negative pressure pump according to claim 1 is characterized in that oil-feed duct (5) can be a word, cross or plural duct.