CN203547656U

CN203547656U - Novel backflow-preventing closing-free heat preservation combined well mouth

Info

Publication number: CN203547656U
Application number: CN201320754707.2U
Authority: CN
Inventors: 何登龙; 贾广生; 张淞源; 司建丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-26
Filing date: 2013-11-26
Publication date: 2014-04-16
Anticipated expiration: 2023-11-26

Abstract

The utility model provides a novel backflow-preventing closing-free heat preservation combined well mouth. The combine well mouth comprises an oil return pipe, wherein a check valve and an oil return valve are connected between an oil pipe and the oil return pipe in series. A main water supply valve at the upper portion of a water mixing pipe is communicated with a casing pipe heat preservation sleeve, and the casing pipe heat preservation sleeve is communicated with an oil pipe heat preservation sleeve. The oil pipe heat preservation sleeve is communicated with an oil pipe layer of the oil return pipe through a connecting pipe, a water mixing valve, a communicating valve and a fixed-pressure stop valve are connected on a pipeline in series, a sleeve taking pressure valve is connected beside, the rear end of the main water supply valve is communicated with a sleeve layer of the oil return pipe through a pipeline, and a well washing valve and a fixed-pressure vent valve are connected between the pipeline at the rear end of the main water supply valve and the sleeve layer of the oil return pipe. The novel backflow-preventing closing-free heat preservation combined well mouth has the advantages of being stable in water quantity and fixed pressure control, quick in well washing plug removal, simple and convenient to install and convenient to use, is applicable, is in urgent need at present, has good economic benefit and social benefit and can be popularized and applied to a producing well.

Description

Anti counter-flowing exempts to close insulating novel combination well head

Technical field

The utility model relates to oil production equipment field, is specifically related to anti counter-flowing and exempts to close insulating novel combination well head.

Background technology

The well head of oil well combination at present type is a lot, owing to having defect in design, structure, in production application and management, can not adapt to and meet need of work; What have lacks function, some unreasonable structure, and what have can not carry out partial insulation, what have can not carry out care and maintenance, does not reach unified management and instructions for use, the problem that combinaing valve body exists at present: 1. the wellhead combination valve type that oil well is used is more, complex structure, and insufficiency; 2. when well head is discharged liquid, the liquid of oil return pipeline easily produces refluence phenomenon; 3. during oil well operation overhaul, valve body can not normally be incubated, and is often that water waters, scalds in the winter time, causes that wellhead equipment is dirty, unrest, poor, has brought very large workload to post workman; 4. admission is during well information, because sample valve, pressure measuring valve often freeze, stifled phenomenon, serious impact the timely admission and parasexuality entirely of data; 5. because the type of combination well head is more, each single valve dimensions disunity, work apparatus uses more, and can not exchange; 6. due to the variation of water mixing temperature, often freeze well, block up well phenomenon, serious affect completing smoothly of crude output; 7. production management difficulty increases, and hidden danger very easily occurs.

Summary of the invention

In order to overcome the deficiency of background technology, the utility model provides anti counter-flowing to exempt to close insulating novel combination well head and addresses the above problem.

The technical solution of the utility model is: anti counter-flowing exempts to close insulating novel combination well head, comprise oil return pipe, the cannula tip of the sleeve pipe cross connection of oil return pipe is connected with hoop, the oil pipe end that oil return pipe laterally connects is connected with hoop, is serially connected with ball-and-seat, oil return valve between oil pipe and oil return pipe, the water mixing pipe top parallel with oil return pipe connects total water-supply valve, total water-supply valve is communicated with the sleeve pipe muff that is wrapped in jacket exterior, sleeve pipe muff is communicated with the oil pipe muff that is wrapped in oil pipe outside, oil pipe muff has tube connector to be communicated with the oil pipe layer of oil return pipe, on the oil pipe connecting pipeline of tube connector and oil return pipe, be serially connected with water doping valve, communicating valve and fixed pressure stop valve, side is connected to gets cover pressure valve, total water-supply valve rear end separately has pipeline to be communicated with the casing layer of oil return pipe, between being communicated with, the casing layer of total water-supply valve rear end pipeline and oil return pipe is serially connected with flushing valve and valve discharging gas under certain pressure, on oil pipe pipeline, side is connected to sample valve and gets oil pressure valve, and on bushing pipeline, other being connected to got cover pressure valve, and another entrance point of water doping valve is connected with screws valve for preventing illagel application.

The utlity model has following beneficial effect: there is the water yield, level pressure control stable, well-flushing de-plugging is quick, and feature simple and direct, easy to use is installed, and is to be badly in need of and applicable combination well head at present, there is good economic benefit and social benefit, can on producing well, apply.

accompanying drawing explanation:

Accompanying drawing 1 is structural representation of the present utility model.

1-hoop in figure, 2-sample valve, 3-ball-and-seat, 4-gets oil pressure valve, 5-gets cover pressure valve, 6-water doping valve, 7-communicating valve, 8-flushing valve, the total water-supply valve of 9-, 10-oil return valve, 11-valve discharging gas under certain pressure, 12-fixed pressure stop valve, 13-overlaps pressure valve, 14-oil pipe muff, 15-screws valve for preventing illagel application, 16-communicating pipe, 17-oil pipe, 18-sleeve pipe, 19-oil return pipe, 20-water mixing pipe, 21-sleeve pipe muff.

the specific embodiment:

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, anti counter-flowing exempts to close insulating novel combination well head, comprise oil return pipe 19, sleeve pipe 18 ends of the sleeve pipe cross connection of oil return pipe 19 are connected with hoop 1, oil pipe 17 ends that oil return pipe 19 laterally connects are connected with hoop 1, are serially connected with ball-and-seat 3, oil return valve 10 between oil pipe 17 and oil return pipe 19;

Water mixing pipe 20 tops parallel with oil return pipe 19 connect total water-supply valve 9, total water-supply valve 9 is communicated with the sleeve pipe muff 21 that is wrapped in sleeve pipe 18 outsides, sleeve pipe muff 21 is communicated with the oil pipe muff 14 that is wrapped in oil pipe 17 outsides, oil pipe muff 14 has tube connector 16 to be communicated with the oil pipe layer of oil return pipe 19, on the oil pipe connecting pipeline of tube connector 16 and oil return pipe 19, be serially connected with water doping valve 6, communicating valve 7 and fixed pressure stop valve 12, side is connected to gets cover pressure valve 5, total water-supply valve 9 rear ends separately have pipeline to be communicated with the casing layer of oil return pipe 19, between being communicated with, the casing layer of total water-supply valve 9 rear end pipelines and oil return pipe 19 is serially connected with flushing valve 8 and valve discharging gas under certain pressure 11,

On oil pipe 17 pipelines, side is connected to sample valve 2 and gets oil pressure valve 4, the other cover pressure valve 13 that is connected on sleeve pipe 18 pipelines, and another entrance point of water doping valve 6 is connected with screws valve for preventing illagel application 15.

Increase a flap valve, can stop liquid to flow backwards, reduce liquid backflow and leak; Without watering, scalding, realization is not related to water doping valve and can carries out oil well sampling throughout the year; During the operation of winter oil well construction, the whole valve group of well head is realized to insulation, while driving a well without watering, scalding; The each valve of combination well head can reach exchange, and entirety is safeguarded, convenient management; Proof wellhead oil casing and valve body, with heat insulating ability structure, prevent that heat runs off.

Anti counter-flowing is exempted to close water mixing insulating novel combination well head and is mainly contained following functions:

1. realize anti counter-flowing: when pump condition goes wrong, water mixing has refluence phenomenon; Measure: at production fluid Increasing exports a backflow preventing check valve, object is to prevent that water mixing from flowing backwards, and has greatly improved the efficiency of oil well liquid-producing.

2. increase anti-condensation plugging function: water mixing design is in the middle of oil return valve and the pipeline that produces oil, and water mixing water → casing head is incubated → produces muff → valve body oil return pipeline → water doping valve → oil return valve, major function is that pipeline, assembly carry out the insulation circulation of summer in winter;

3. increase pressure antifreeze function: according to the difficult problem of oil field pressure in winter, at oil pipe and sleeve pipe pressure position, increased heat insulation function especially, having reached pressure in winter does not freeze, changed winter workman water, scald pressure tappings, greatly improved admission data accuracy rate problem, reduce labor strength, improved operating efficiency and production management level.

4. realize and be not related to water mixing sampling: sampling in the past need to be closed water mixing, just can get former well production fluid real data, can close water mixing and just can sample after improvement, improved authenticity and the full parasexuality of data.

5. guarantee that workover does not freeze well head: when oil well carries out operation overhaul, need to, by total water, total oil return valve closing, open profit and be communicated with assurance circulation in the past, when driving a well, need to water tubing head, casing head and assembly, scald and could produce.After this combination valve improves, without this operation, only need to open profit communicating valve, close water doping valve, oil return valve can guarantee well-head valve group and tubing head, casing head, surface line can be incubated circulation,

6. combination wellhead maintenance is more convenient: former combination valve can not reach exchange, and part screw thread, size are inconsistent; The each valve of this combination well head can reach exchange, and entirety is safeguarded, convenient management.

7. operation wellhead can reach water mixing pipeline UNICOM without the total water mixing pipeline of Guan and oil return pipeline. do not affect work operations.Thereby realize the effect of systemic circulation.

8. well head oil, casing head, with self-insurance warm nature, prevent that heat runs off.

Claims

1. an anti counter-flowing exempts to close insulating novel combination well head, comprise oil return pipe (19), it is characterized in that: sleeve pipe (18) end of the sleeve pipe cross connection of oil return pipe (19) is connected with hoop (1), oil pipe (17) end that oil return pipe (19) laterally connects is connected with hoop (1), is serially connected with ball-and-seat (3), oil return valve (10) between oil pipe (17) and oil return pipe (19), water mixing pipe (20) top parallel with oil return pipe (19) connects total water-supply valve (9), total water-supply valve (9) sleeve pipe muff (21) outside with being wrapped in sleeve pipe (18) is communicated with, sleeve pipe muff (21) the oil pipe muff (14) outside with being wrapped in oil pipe (17) is communicated with, oil pipe muff (14) has tube connector (16) to be communicated with the oil pipe layer of oil return pipe (19), on the oil pipe connecting pipeline of tube connector (16) and oil return pipe (19), be serially connected with water doping valve (6), communicating valve (7) and fixed pressure stop valve (12), side is connected to gets cover pressure valve (5), total water-supply valve (9) rear end separately has pipeline to be communicated with the casing layer of oil return pipe (19), between being communicated with, the casing layer of total water-supply valve (9) rear end pipeline and oil return pipe (19) is serially connected with flushing valve (8) and valve discharging gas under certain pressure (11), on oil pipe (17) pipeline, side is connected to sample valve (2) and gets oil pressure valve (4), the other cover pressure valve (13) that is connected on sleeve pipe (18) pipeline, and another entrance point of water doping valve (6) is connected with screws valve for preventing illagel application (15).