CN201460878U

CN201460878U - Pressure measuring device for oil-water well pipe column

Info

Publication number: CN201460878U
Application number: CN2009201102882U
Authority: CN
Inventors: 李红; 于淑华; 张孟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-30
Filing date: 2009-07-30
Publication date: 2010-05-12
Anticipated expiration: 2019-07-30

Abstract

The utility model relates to a pressure measuring device for an oil-water well pipe column. A pressure gauge and a pressure relief valve are respectively communicated with two joints of a four-way valve, and a one-way valve is communicated with one joint of the four-way valve. Because the pressure measuring device for the oil-water well pipe column of the utility model is provided with the pressure gauge, the observation of the pressure is accurate and convenient in the measuring process. Because the pressure measuring device for the oil-water well pipe column of the utility model is provided with the one-way valve communicated with one joint of the four-way valve, liquid is filled into a pipe column to be measured through the one-way valve, the liquid flows in one direction, and the liquid in the pipe column can be prevented from flowing back, thus the phenomenon of blowout can not occur, the leakage at a connecting part of ground pipelines does not affect measurement, and the pressure can be stabilized easily.

Description

Oil-water well tubing string device for pressure measurement

Technical field

The utility model relates to a kind of device for pressure measurement, particularly a kind of oil-water well tubing string device for pressure measurement.

Background technology

Workover treatment is in order to separate oil removing, well fault, recovers or improves its production capacity and the work measure implemented.In the well workover process, often need suppress leakage detection during the leakage of check oil pipe, what is called is suppressed exactly an end of oil pipe is blocked, and the other end is according to the size of required pressure, in oil pipe, apply liquid with pump truck and produce high pressure, thereby judge by the pressure meter of observing on the pump truck whether oil pipe has leakage.In suppressing process, exist following shortcoming:

1, pump truck is distant apart from well head, and it is inaccurate to observe pressure, inconvenience.

In case blowout raise to take place in 2 borehole pressures, cause ground to suppress equipment and tied down and unload, there is hidden danger.

3, because the leakage of surface line junction can't judge accurately whether down-hole string misses, and especially the well of the little leakage of down-hole string more can't accurately be judged.

4, suppress in the envelope process that rises at a minute survey, channeling test of cement sheath and water blockoff, do not reach 3 minutes technical requirements of voltage stabilizing, can't judge the packer envelope situation that rises accurately.

The utility model content

For addressing the above problem, the utility model provides a kind of pressure of observing in measuring process accurately to make things convenient for, and blowout can not take place, and the leakage of surface line junction does not influence measurement, easily the oil-water well tubing string device for pressure measurement of voltage stabilizing.

The utility model oil-water well tubing string device for pressure measurement, wherein: pressure meter, pressure-relief valve are communicated with respectively on two joints of a four-way, and an one way valve is communicated with on a joint of described four-way.

The utility model oil-water well tubing string device for pressure measurement, wherein: described one way valve comprises following structure: compress box cupling and pass through the upper end of the external thread bolt connection of its lower end in check valve body, described check valve body is passed through the external thread bolt connection of its lower end on box cupling, and box cupling is screwed onto on the joint of described four-way by the internal thread of its lower end; The lower end that compresses box cupling is pressed on a valve seat on the ring-type platform of check valve body inside middle, cone valve upwards is pressed in the lower end of valve seat, the cone valve lower end is connected with valve rod, the spacing hole at check valve body downside center is passed in the lower end of valve rod, be provided with some fluid holes around the spacing hole, the outside of valve rod is with stage clip, and the stage clip upside is positioned at the cone valve downside, and downside is positioned at the upside of spacing hole periphery.

The utility model oil-water well tubing string device for pressure measurement is owing to be provided with pressure meter, therefore it is accurately convenient to observe pressure in the measuring process, the utility model oil-water well tubing string device for pressure measurement is owing to there is an one way valve to be communicated with on a joint of described four-way, in tubing string to be measured, inject liquid by one way valve, the liquid folk prescription prevents that to flowing the tubing string inner fluid from flowing backwards, and therefore blowout can not take place, the leakage of surface line junction does not influence measurement, voltage stabilizing easily.

Description of drawings

Fig. 1 is that the master of the utility model oil-water well tubing string device for pressure measurement looks partial sectional view.

The specific embodiment

Below in conjunction with Figure of description the utility model oil-water well tubing string device for pressure measurement is described further.

Referring to Fig. 1, pressure meter 2, pressure-relief valve 3 are communicated with respectively on two joints of a four-way 4, and an one way valve 5 is communicated with on a joint of four-way 4.The joint of four-way 4 lower ends is used to be communicated to the inlet of oil-water well tubing string to be measured.

The structure of one way valve 5 is: compress box cupling 51 external thread bolt connection by its lower end in the upper end of check valve body 52, the external thread bolt connection of check valve body 52 by its lower end is on box cupling 53, and box cupling 53 is screwed onto on the joint of four-way 4 by the internal thread of its lower end; The lower end that compresses box cupling 51 is pressed on a valve seat 55 on the ring-type platform 56 of check valve body 52 inside middle, cone valve 57 upwards is pressed in the lower end of valve seat 55, cone valve 57 lower ends are connected with valve rod 58, the spacing hole at check valve body 52 downside centers is passed in the lower end of valve rod 58, be provided with some fluid holes 522 around the spacing hole, the outside of valve rod 58 is with stage clip 59, stage clip 59 upsides are positioned at cone valve 57 downsides, downside is positioned at the upside of spacing hole periphery, and stage clip 59 can keep the position of cone valve 57 and valve rod 58.

The course of work of the utility model oil-water well tubing string device for pressure measurement is as follows: the delivery outlet of pump truck compresses box cupling 51 upper ends by what water pipe was connected to one way valve 5, and the interface mouth of four-way 4 lower ends is communicated to the inlet of oil-water well tubing string to be measured.After pump truck begins water delivery, cone valve 57 moves down under hydraulic pressure, current are in fluid hole 522 enters the oil-water well tubing string, the liquid folk prescription raises the tubing string internal pressure to flowing gradually, after reaching required pressure, stop water filling, change by the pressure of observing pressure meter 2 and judge whether tubing string has leakage.Because one way valve 5 makes the liquid folk prescription to flowing, prevent that the tubing string inner fluid from flowing backwards, and also just prevented blowout.The gate of opening pressure-relief valve 3 during pressure release just can pressure release.

Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.

Claims

1. oil-water well tubing string device for pressure measurement, it is characterized in that: pressure meter (2), pressure-relief valve (3) are communicated with respectively on two joints of a four-way (4), and an one way valve (5) is communicated with on a joint of described four-way (4).

2. oil-water well tubing string device for pressure measurement according to claim 1, it is characterized in that: described one way valve (5) comprises following structure: compress box cupling (51) and pass through the upper end of the external thread bolt connection of its lower end in check valve body (52), described check valve body (52) is passed through the external thread bolt connection of its lower end on box cupling (53), and box cupling (53) is screwed onto on the joint of described four-way (4) by the internal thread of its lower end; The lower end that compresses box cupling (51) is pressed on a valve seat (55) on the ring-type platform (56) of check valve body (52) inside middle, cone valve (57) upwards is pressed in the lower end of valve seat (55), cone valve (57) lower end is connected with valve rod (58), the spacing hole at check valve body (52) downside center is passed in the lower end of valve rod (58), be provided with some fluid holes (522) around the spacing hole, the outside of valve rod (58) is with stage clip (59), stage clip (59) upside is positioned at cone valve (57) downside, and downside is positioned at the upside of spacing hole periphery.