CN200958389Y

CN200958389Y - Manograph of throttle pipe

Info

Publication number: CN200958389Y
Application number: CNU2006200359405U
Authority: CN
Inventors: 蒋光强; 艾海提江; 郭雨庭; 凌代元
Original assignee: SICHUAN NEIJIANG HONGSHENG PETROLEUM MACHINERY CO Ltd
Current assignee: SICHUAN NEIJIANG HONGSHENG PETROLEUM MACHINERY CO Ltd
Priority date: 2006-10-18
Filing date: 2006-10-18
Publication date: 2007-10-10
Anticipated expiration: 2016-10-18

Abstract

The utility model discloses a pressure measuring unit of the a choke manifold, which is composed of a cylinder body with a flange on a coupling end; wherein, the top of the cylinder body is provided with a filler hole an internal chamber of the cylinder body is provided with a piston and the internal chamber above the piston is filled with liquid. The filler hole is sealed by a pipe plug. The cylinder body is provided with one or more stop valves, which are communicated with the cavity above the piston, and each stop valve is provided with the pressure measuring unit; as the further improvement of the utility model, the side wall of the internal chamber below the piston is provided with a cleaning ring, and the side wall of the internal chamber, which is lower than the cleaning ring, is provided with a circular groove. The groove is provided with a steel wire retaining ring, and the side wall of the internal chamber, which is lower than the steel wire retaining ring, is provided with a pressure relief hole, and the pressure relief hole is sealed by the pipe plug. The utility model can prevent failure of instrument caused by the impurity blockage, and has the advantages of long service life and convenient in maintenance.

Description

The pressure tester of choke manifold

Technical field

The utility model relates to a kind of pressure tester that is used on the choke manifold, belongs to the well-control equipment field.

Background technology

In oil exploration drilling, when having oil gas to enter pit shaft in the well, the operator can close the preventer on it rapidly, drilling fluid and borehole fluid are excessive by choke manifold, pressure tester on the choke manifold is measured tube fluid pressure, the operator will determine the proportion of the drilling fluid that processing folding overflow will increase by this pressure, make its oil gas of pushing down the stratum no longer enter pit shaft, simultaneously, all the time the shown force value of pressure tester changes on the close observation choke manifold, the valve of constantly splitting on the choke manifold is regulated, and makes the oil gas that enters pit shaft successfully be circulated to ground and enters in the atmosphere and separate, and handles overflow safely.

From above narration as can be seen, can the pressure tester on the choke manifold operate as normal just seem very important, and the present pressure tester that uses on choke manifold, as shown in Figure 1, the flange 22 that is provided with runner 20 in comprising and links with choke manifold 21, be used to detect the pressure meter 23 of runner internal pressure and the plug 25 of pressure transmitter 24 and flow field end, because for guaranteeing wall thickness, the aperture of runner 20 can not be too big, and drilling fluid and borehole fluid contain more impurity, they enter in the runner 20 and very easily result in blockage, thereby make instrument malfunction, can't accurately measure the pipe internal pressure, bring difficulty for the processing overflow; Pressure meter 23 and pressure transmitter 24 are directly to contact with drilling fluid and borehole fluid simultaneously, and first hydrogen sulfide, Barbiturates material that they contain have corrosiveness to instrument, cause instrument malfunction or damage, have shortened application life

The utility model content

The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of pressure tester that can effectively prevent to stop up because of impurity the choke manifold that causes instrument malfunction is provided, and has the advantage of long service life simultaneously.

For achieving the above object, the pressure tester of choke manifold of the present utility model, comprise that connecting end is provided with the cylinder body of flange, connect by flange and choke manifold, it is characterized in that being provided with tank filler sleeve, be provided with piston at inner chamber of cylinder block at the cylinder body top, the inner chamber of piston top is full of liquid is arranged, tank filler sleeve is sealed by plug, be equipped with on the cylinder body one or more, the stop valve that communicates with cavity above the piston, be equipped with pressure-detecting device on each stop valve;

Above-mentioned pressure-detecting device can be high-pressure manometer or low pressure gauge, is applicable to the operating mode that pressure is different respectively; Above-mentioned pressure-detecting device also can be the electronic pressure sensor, and it links to each other with the remote pressure display instrument, can carry out remote reading, realizes monitoring;

Operating principle of the present utility model is: when closing preventer, contain the drilling fluid of impurity, first hydrogen sulfide and Barbiturates material and borehole fluid by choke manifold when excessive, also some enters in the cylinder body, by the liquid in piston, the cylinder body fluid pressure in the choke manifold is passed to pressure-detecting device, because impurity and corrosive first hydrogen sulfide and Barbiturates material are intercepted by piston, can not enter in the cylinder body of piston top, thereby avoided impurity to stop up and cause and the corrosion of instrument malfunction and instrument prolonged application life;

As further improvement of the utility model, the intracavity sidewall below the piston is provided with mud-scraping ring, after using over a long time, when needing to add liquid because of the intracavity liquid leakage, piston moves down, and mud-scraping ring can be removed the residual impurity on the cavity wall, prolongs piston application life;

As further improvement of the utility model, be provided with annular recess being lower than on the intracavity sidewall of mud-scraping ring, be provided with elastic spring in the groove, be convenient to when maintenance, piston and mud-scraping ring be positioned;

As further improvement of the utility model, be provided with relief hole being lower than on the intracavity sidewall of elastic spring, relief hole is sealed by plug; Unclamp plug, be convenient to pressure-detecting device is changed;

In sum, the utility model can effectively prevent to cause instrument malfunction because of impurity stops up, have long service life simultaneously, overhauls advantage easily.

Description of drawings

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

Fig. 1 is the front view of the pressure tester user mode of existing choke manifold.

Fig. 2 is the front view of the utility model embodiment user mode.

Fig. 3 is that the A of Fig. 2 is to view.

The specific embodiment

By Fig. 2 and shown in Figure 3, the pressure tester of the choke manifold of the utility model embodiment, comprise that connecting end is provided with the cylinder body 2 of flange 1, connect by flange 1 and choke manifold 3, be provided with tank filler sleeve 4 at cylinder body 1 top, inner chamber at cylinder body 1 is provided with piston 5, the inner chamber of piston 5 tops is full of liquid, tank filler sleeve 4 is by plug 6 sealings, be equipped with on the cylinder body 1 three with piston 5 above the stop valve 7 that communicates of cavity, 8,9, the different respectively high-pressure manometers 10 that are provided with on it, low pressure gauge 11, electronic pressure sensor 12, on the intracavity sidewall below the piston 5, be provided with mud-scraping ring 13, on the intracavity sidewall that is lower than mud-scraping ring 13, be provided with annular recess, be provided with elastic spring 14 in the groove by interference fits, be provided with relief hole 15 on the intracavity sidewall that is lower than elastic spring 14, relief hole is by plug 16 sealings;

During use, should open stop valve 7 earlier, the numerical value that shows as high-pressure manometer 10 is bigger, and should not use stop valve 8 this moment, makes it be in closed condition, with protection low pressure gauge 11; Less as the numerical value that high-pressure manometer 10 shows, open stop valve 8, more can read force value exactly by low pressure gauge 11.

Claims

1. the pressure tester of a choke manifold, comprise that connecting end is provided with the cylinder body of flange, it is characterized in that being provided with tank filler sleeve at the cylinder body top, be provided with piston at inner chamber of cylinder block, the inner chamber of piston top is full of liquid, tank filler sleeve is sealed by plug, be equipped with on the cylinder body one or more, the stop valve that communicates with cavity above the piston, be equipped with pressure-detecting device on each stop valve.

2. the pressure tester of choke manifold according to claim 1 is characterized in that described pressure-detecting device is high-pressure manometer or low pressure gauge.

3. the pressure tester of choke manifold according to claim 1 is characterized in that described pressure-detecting device is the electronic pressure sensor, and it links to each other with the remote pressure display instrument.

4. according to the pressure tester of the arbitrary described choke manifold of claim 1 to 3, it is characterized in that the intracavity sidewall below the piston is provided with mud-scraping ring.

5. the pressure tester of choke manifold according to claim 4 is characterized in that being provided with annular recess being lower than on the intracavity sidewall of mud-scraping ring, is provided with elastic spring in the groove.

6. the pressure tester of choke manifold according to claim 5 is characterized in that being provided with relief hole being lower than on the intracavity sidewall of elastic spring, and relief hole is sealed by plug.