CN202673264U

CN202673264U - Downhole automatic chemical dosing device for oil well

Info

Publication number: CN202673264U
Application number: CN 201220314706
Authority: CN
Inventors: 许双龙; 张国旺; 李建勇; 李金永; 朱军; 李栋; 许继成; 罗晓荣
Original assignee: 许双龙
Priority date: 2012-07-02
Filing date: 2012-07-02
Publication date: 2013-01-16
Anticipated expiration: 2022-07-02

Abstract

The utility model relates to a downhole automatic chemical dosing device for an oil well. The device comprises a connecting pipe shell, one end of the connecting pipe shell is connected with a chemical storage tail pipe, a filtering pipe is arranged in the chemical storage tail pipe, and the other end of the connecting pipe shell is connected with an exchange pipe with a liquid inlet channel. A short pipe is arranged in the exchange pipe, one end of the short pipe is communicated with an inlet of the filtering pipe in the chemical storage tail pipe via the connecting pipe shell, the other end of the short pipe is provided with a check valve, the upper part of the pipe section with throttle valves on both ends hermetically stretches into the short pipe via the check valve installing end of the short pipe, and the lower part of the pipe section of a chemical discharge pipe stays in the exchange pipe. Compared with the traditional oil well chemical dosing way, the application of the downhole automatic chemical dosing device for an oil well has the advantages of convenience and quickness in operation and use, labor saving, effort saving, time saving, high economical efficiency, environmental protection property and safety, uniform and stable chemical dosing process, excellent effects and the like, and the technical indexes of chemicals are easy to reach the standard.

Description

The oil well underground automatic dosing device

Technical field

The utility model relates to a kind of oil well underground automatic dosing device.

Background technology

At present, oil well dosing mode commonly used mainly contains three kinds, for: the dosing of well head gap, well head continuous dosing and downhole solid dosing.More than three kinds of dosing methods all exist separately defective, as: large, the economy feature of environmental protection of labour intensity and that safety is lower, the medicament technical indicator is difficult to control the dosing corrosion mitigating effect that causes up to standard is poor etc. during enforcement, thus the use of oil well (especially corrosivity oil well) is caused many adverse effects.

The utility model content

The technical problems to be solved in the utility model is: for present oil well dosing method have that working strength is large, the economy feature of environmental protection and safety be lower, the medicament technical indicator is difficult to control the situation of the defective such as up to standard, and a kind of oil well underground automatic dosing device is provided, overcome the existing existing defective of oil well dosing method.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of oil well underground automatic dosing device, include the linking shell, a termination that is connected shell is equipped with the drug storage tail pipe, in the drug storage tail pipe, be provided with filter pipe, be connected the other end tipping of shell with the exchanging tube of feed pathway, in exchanging tube, be provided with short tube, one end of short tube is communicated with by being connected shell with the import of drug storage tail pipe inner filtration pipe, the other end of short tube is equipped with one way valve, two ends all are equipped with the top of row's pencil of choke valve and divide pipeline section to be stretched in the short tube by the one way valve installation end sealing of short tube, and the bottom of row's pencil divides pipeline section to be in the exchanging tube.

This oil well is as follows with the course of work and the principle of underground automatic dosing device: (corrosion inhibiter is in the folder chamber of drug storage inner wall of liner and filter pipe outer wall) device can be gone into the well behind the in-built raising density of the drug storage tail pipe corrosion inhibiter, the process of going into the well need not to rely on exterior power, after going into the well, low density liquid in the oil well middle sleeve will be entered by the feed pathway of exchanging tube in the exchanging tube, and the one way valve place of to the exchanging tube the short tube of floating, enter in the short tube via one way valve, thereby then enter to the drug storage tail pipe through chimney filter again and dilute gradually the high density corrosion inhibiter, the corrosion inhibiter that is diluted gradually enters in the short tube in the exchanging tube by filter pipe again, discharge (throttle valve control by row's pencil two ends with adjust dose and speed, to adapt to the actual conditions of oil well) by row's pencil at last and flow in the well.The drug process of this automatic medicine adding apparatus, actual is according to the automatic principle that occurs alternately, merges of liquid meeting of different densities (high density and low-density), and interactive speed, drug flow taked certain certainly control, so that the drug process is more even, stable, thereby facility in the oil well has been played good dosing corrosion mitigating effect, and the application life of well inner tube rod member etc. and pump detection period all greatly prolong.

The beneficial effects of the utility model are: this oil well with the application of underground automatic dosing device overcome that the working strength that existing oil well dosing method exists is large, the economy feature of environmental protection and safety be lower, the medicament technical indicator is difficult to control defective up to standard.This oil well with the application of underground automatic dosing device have easy for operation quick, save labor save time, the economy feature of environmental protection and safe, medicament technical indicator up to standard, the plurality of advantages such as the uniform and stable effect of dosing process is good easy to control.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is sectional structure schematic diagram of the present utility model.

Among the figure: 1. be connected shell 2. drug storage tail pipes 3. filter pipes 4. exchanging tube 4-1. feed pathway 5. short tubes 6. one way valves 7. choke valves 8. row's pencils

The specific embodiment

A kind of oil well underground automatic dosing device, as shown in Figure 1, it includes and is connected shell 1, a termination that is connected shell 1 is equipped with drug storage tail pipe 2, in drug storage tail pipe 2, be provided with filter pipe 3, be connected the other end tipping of shell 1 with the exchanging tube 4 of feed pathway 4-1, in exchanging tube 4, be provided with short tube 5, one end of short tube 5 is communicated with by being connected shell 1 with the import of drug storage tail pipe 2 inner filtration pipes 3, the other end of short tube 5 is equipped with one way valve 6, two ends all are equipped with the top of row's pencil 8 of choke valve 7 and divide pipeline section to be stretched in the short tube 5 by the one way valve 6 installation ends sealing of short tube 5, and the bottom of row's pencil 8 divides pipeline section to be in the civilian replace tubes 4.

(corrosion inhibiter is in the folder chamber of drug storage tail pipe 2 inwalls and filter pipe 3 outer walls) device can be gone into the well behind the drug storage tail pipe 2 in-built raising density corrosion inhibiter, the process of going into the well need not to rely on exterior power, after going into the well, low density liquid in the oil well middle sleeve will be entered by the feed pathway 4-1 of exchanging tube 4 in the exchanging tube 4, and float to one way valve 6 places of exchanging tube 4 interior short tubes 5, enter in the short tube 5 via one way valve 6, thereby then enter to drug storage tail pipe 2 through chimney filter 3 again and dilute gradually the high density corrosion inhibiter, the corrosion inhibiter that is diluted gradually enters in the short tube 5 in the exchanging tube 4 by filter pipe 3 again, discharge (choke valve 7 controls by row's pencil 8 two ends with adjust dose and speed, to adapt to the actual conditions of oil well) by row's pencil 8 at last and flow in the well.The drug process of this automatic medicine adding apparatus, actual is according to the automatic principle that occurs alternately, merges of liquid meeting of different densities (high density and low-density), and interactive speed, drug flow taked certain certainly control, so that the drug process is more even, stable, thereby facility in the oil well has been played good dosing corrosion mitigating effect, and the application life of well inner tube rod member etc. and pump detection period all greatly prolong.

Claims

1. oil well underground automatic dosing device, it is characterized in that: include linking shell (1), a termination that is connected shell (1) is equipped with drug storage tail pipe (2), in drug storage tail pipe (2), be provided with filter pipe (3), be connected the other end tipping of shell (1) with the exchanging tube (4) of feed pathway (4-1), in exchanging tube (4), be provided with short tube (5), one end of short tube (5) is communicated with by being connected shell (1) with the import of drug storage tail pipe (2) inner filtration pipe (3), the other end of short tube (5) is equipped with one way valve (6), two ends all are equipped with the top of row's pencil (8) of choke valve (7) and divide pipeline section to be stretched in the short tube (5) by the one way valve installation end sealing of short tube (5), and the bottom of row's pencil (8) divides pipeline section to be in the exchanging tube (4).