CN201184176Y

CN201184176Y - Oil well head constant pressure uniform speed heating and charging apparatus

Info

Publication number: CN201184176Y
Application number: CNU2008201068302U
Authority: CN
Inventors: 侯志峰; 卢静飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2009-01-21
Anticipated expiration: 2018-03-19

Abstract

The utility model relates to an oil well mouth constant-pressure and uniform-velocity heating and dosing device, and mainly solves the problems that the prior well mouth dosing device can not dose at a uniform velocity, and is frozen easily in winter, and the crude oil in an oil well casing gets into the dosing device easily. The oil well mouth constant-pressure and uniform-velocity heating and dosing device is characterized in that a dosing tank (1) and a constant-pressure tank (12) are arranged in a box body (4) and communicate through a constant-pressure tube (3); a dosing atmospheric valve (2) is arranged at the upper part of the dosing tank (1), and the lower part communicates with a dosing mouth (20) through a dosing valve (6) and a metering pump (8); the upper part of the constant-pressure tank (12) communicates with a constant-pressure mouth (21) through valves (13 and 14); and an electromagnetic cut-off valve (14) is connected with a control box (17) through a constant-pressure interlocking control (9). The oil well mouth constant-pressure and uniform-velocity heating and dosing device has the characteristics of dosing at the uniform velocity without the influence of the oil well casing pressure and preventing frostbite in winter.

Description

The well mouth of oil well constant voltage at the uniform velocity heats chemicals dosing plant

Technical field:

The utility model relates to a kind of oilfield chemical auxiliary equipment, belongs to the well mouth of oil well constant voltage and at the uniform velocity heats chemicals dosing plant.

Background technology:

Along with deepening continuously of oil field development, oil well is in oil pipe and the formed ring cavity of sleeve pipe, need to add some chemical agents to guarantee the normal production capacity of oil well, and the well head chemicals dosing plant of Oilfield using has a variety of at present: well head gravity adds cartridge bag, the measuring pump chemicals dosing plant, unpowered at the uniform velocity chemicals dosing plant or the like, all there is certain defective but it is technical, it is wayward that well head adds cartridge bag, the soup flow velocity changes with the variation of liquid level, the addition fluctuation of soup is big, can not realize adjustable, the process of continuous dosing, particularly low oil well to submergence, soup can not be brought into play the effect of drug effect continuously at short notice promptly by extraction, and the efficacy of a drug is difficult for giving full play to; And the measuring pump chemicals dosing plant though can be good at work playing a role, the price height, is subject to the purpose that oil well casing pressure influence can not reach at the uniform velocity dosing; And unpowered chemicals dosing plant can't resolve crude oil and enters chemicals dosing plant by the gas balance pipe, the problem of the complete and preventing freeze in winter of safety attachment.

The utility model content:

In order to overcome existing well head chemicals dosing plant owing to crude oil in the at the uniform velocity dosing of oil well casing pressure variable effect, the oil well casing easily enters chemicals dosing plant, chemicals dosing plant not antifreeze deficiency in winter, the utility model provides a kind of well mouth of oil well constant voltage at the uniform velocity to heat chemicals dosing plant, this well mouth of oil well constant voltage at the uniform velocity heat chemicals dosing plant have be not subjected to crude oil in the at the uniform velocity dosing of oil well casing pressure influence, oil well casing can not access to plant, the characteristics of preventing freeze in winter

The technical solution of the utility model is: a kind of well mouth of oil well constant voltage at the uniform velocity heats chemicals dosing plant, comprise casing, grug feeding jar, grug feeding jar is arranged in the casing, the constant voltage jar, and be communicated with by the constant voltage pipe between the two, the dosing atmospheric valve is arranged at grug feeding jar top, dosing valve is passed through in the bottom, the metering strainer, measuring pump, one way valve is communicated with dosing mouth, constant voltage jar top is by the air pressure balance valve, electromagnetic shut-off valve is communicated with the constant voltage mouth, the liquid level contactor is installed at the middle part, electromagnetic shut-off valve and liquid level contactor connect with the control cabinet that is connected heating facility, grug feeding jar, blowoff valve is all arranged at constant voltage jar bottom, and the insulation interlayer is arranged in the casing.

The utlity model has following beneficial effect: owing to take such scheme, this well mouth of oil well constant voltage at the uniform velocity heats chemicals dosing plant has the constant voltage jar by inside, be communicated with by the constant voltage pipe between constant voltage jar and the grug feeding jar, and can regulate flow by measuring pump, can guarantee dosing at the uniform velocity, be not subjected to oil well casing pressure influence, the work continuity is good; By casing have the insulation interlayer and in establish heating facility, guarantee that this chemicals dosing plant has antifreeze function, can normally use winter; By connecting electromagnetic shut-off valve on constant voltage jar top, when entering crude oil in the constant voltage jar and touch the liquid level contactor, electromagnetic shut-off valve is cut off, and guarantees that crude oil can not enter grug feeding jar by the constant voltage pipe.Because this well mouth of oil well constant voltage heats at the uniform velocity that chemicals dosing plant is easy to operate, fault rate is low, cost of production is low, safe, so have broad application prospects.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

1-grug feeding jar among the figure, 2-dosing atmospheric valve, 3-constant voltage pipe, 4-casing, the 5-blowoff valve, 6-dosing valve, 7-piping filter, 8-measuring pump, the chain control of 9-constant voltage, 10-one way valve, 11-in-line relief valve, 12-constant voltage jar, 13-air pressure balance valve, 14-electromagnetic shut-off valve, 15-blowoff valve, 16-safety valve, the 17-control cabinet, 18-liquid level contactor, 19-heating facility, 20-dosing mouth, 21-constant voltage mouth, 22-sewage draining exit, 23-sewage draining exit.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

By shown in Figure 1, a kind of well mouth of oil well constant voltage at the uniform velocity heats chemicals dosing plant, comprises casing 4, grug feeding jar 1, and grug feeding jar 1, constant voltage jar 12 are arranged in the casing 4, be communicated with pressure and oil well casing pressure balance when constant voltage pipe 3 guarantees ordinary production in the grug feeding jar 1 between the two by constant voltage pipe 3; Dosing atmospheric valve 2 is arranged at grug feeding jar 1 top, can get rid of the gas in the grug feeding jar, guarantees that soup enters in the grug feeding jar 1 unblockedly; Grug feeding jar 1 bottom is communicated with dosing mouth 20 by dosing valve 6, piping filter 7, measuring pump 8, one way valve 10, and pipe laying safety valve 11 on its pipeline, soup is through piping filter 7, according to the required dose accommodometer amount pump 8 control dosing flows that add, one way valve 10 prevents that soup from flowing backwards, and in-line relief valve 11 is set the use of protection pressure protect measuring pump 8; Constant voltage jar 12 tops are communicated with constant voltage mouth 21 by air pressure balance valve 13, electromagnetic shut-off valve 14, there is liquid level contactor 18 at the middle part, when entering crude oil in the constant voltage jar 12, touches liquid level contactor 18, feed back to electromagnetic shut-off valve 14 and cut off, guarantee that crude oil can not enter in the grug feeding jar 1 by constant voltage pipe 3; Be provided with control cabinet 17 in the casing 4, liquid level contactor 18 is connected with control cabinet 17, electromagnetic shut-off valve 14 also is connected with control cabinet 17 by the chain control 9 of constant voltage, also has the chain control 9 of gauge tap, constant voltage of measuring pump 8 and the gauge tap of heating facility 19 in the control cabinet 17; In the bottom of grug feeding jar 1, constant voltage jar 12 blowoff valve (5,15) is arranged respectively, be communicated with, can regularly clean discharging with sewage draining exit (23,22); The top of grug feeding jar 1, constant voltage jar 12 is communicated with back attachment security valve 16, and safety valve 16 can be set protection pressure, guarantees that grug feeding jar 1 normally uses.

In real work, at first close air pressure balance valve 13, dosing valve 6, open dosing atmospheric valve 2, from dosing atmospheric valve 2 to grug feeding jar 1 dosing, when the soup of grug feeding jar 1 reaches requirement, the dosing process of grug feeding jar 1 finishes, close dosing atmospheric valve 2 then, open dosing valve 6 and air pressure balance valve 13, start chain control 9 of constant voltage and measuring pump 8, regulate the dosing flow, guarantee that soup enters well head with the flow velocity of steady and continuous and takes over and enter in the ring cavity of oil well casing.

What this well mouth of oil well constant voltage at the uniform velocity heated the chemicals dosing plant employing is the constant voltage principle, stablize medicine system pressure reduction, add dose and reach at the uniform velocity real, solved because the variation of oil well casing pressure causes and adds dose and be affected, also prevented that burst crude oil liquid level height enters chemicals dosing plant in the oil well casing simultaneously; This device well head connects employing snap joint and connects, and can realize being connected with the quick of oil well, and easy for installation, simple to operate, safe and reliable, cost is low, is adapted to various oil well dosings.

Claims

1, a kind of well mouth of oil well constant voltage at the uniform velocity heats chemicals dosing plant, comprise casing (4), grug feeding jar (1), it is characterized in that: grug feeding jar (1) is arranged in the casing (4), constant voltage jar (12), and be communicated with by constant voltage pipe (3) between the two, dosing atmospheric valve (2) is arranged at grug feeding jar (1) top, the bottom is by dosing valve (6), piping filter (7), measuring pump (8), one way valve (10) is communicated with dosing mouth (20), constant voltage jar (12) top is by air pressure balance valve (13), electromagnetic shut-off valve (14) is communicated with constant voltage mouth (21), liquid level contactor (18) is installed at the middle part, and electromagnetic shut-off valve (14) and liquid level contactor (18) connect with the control cabinet that is connected heating facility (19) (17).