Sample-taking device

FIELD: oil industry.

SUBSTANCE: device has hollow body which is a fragment of force pipeline at vertically placed portion of mouth armature. Tool for controlling flow of multi-component gas-liquid substance is made in form of valve, connected to rotary support. Sample chamber is a ring-shaped hollow in hollow body, placed at same level with valve and connected at inlet to flow of multi-component gas-liquid substance through extracting channels, made on hollow body. Extracting channels are made in form of side slits, positioned symmetrically relatively to valve rotation axis. Ring-shaped hollow on hollow body is connected at outlet to locking tool, mounted at extension of valve shaft and made in form of sample-taking valve. Valve shaft and sample-taking valve are interconnected through hollow intermediate shaft. Sample-taking valve is placed in the body of locking tool with possible reciprocal movement. Valve shaft and hollow intermediate shaft are interconnected with possible mutual rotation for a quarter of one turn.

EFFECT: simplified construction and maintenance, higher quality.

4 dwg

 

The invention relates to oilfield equipment for sampling for analysis at the mouth of oil wells and can be used for integrated sampling multicomponent gas-liquid systems, transported through pipelines.

You know the sampling device (patent RU 2151290 C1)containing installed in the system the mouth of the hollow valve body, inside of which is the management body of the flow of multicomponent gas-liquid environment, equipped with sealing elements and a control handle, a sampling chamber in the form of sealed spherical segment with intake channels, a stop valve with a handle and guide tube.

The disadvantage of the sampling device (the device) is the design complexity, which increases its cost and operating costs, complicates maintenance. In addition, the device is mounted on a horizontally located the site of the discharge pipe wellhead equipment, where multicomponent gas-liquid mixture has time to settle (settle) in a way that negatively affects the integral sampling and leads to unreliable results of the analysis of samples.

The technical problem solved by the invention are to simplify the design and maintenance of the device and improving the quality of sampling multicomponent gas-liquid environment.

The problem is solved in that the hollow body is a fragment of the discharge pipe located on vertically stretch the mouth of the valve body of the flow control multicomponent gas-liquid medium is executed in the form of a valve connected to the rotary support, the selected camera is a ring cavity in the hollow body, located at the valve and communicated to the inlet flow of multicomponent gas-liquid medium through the intake channels made on the hollow body in the form of lateral slits arranged symmetrically to the axis of rotation of the valve, a valve body mounted on the continuation of the shaft of the damper and is designed as a valve sampling located in the valve housing body with the possibility of reciprocating movement and connected with the shaft of the valve through the hollow intermediate shaft, and the damper shaft and the intermediate shaft interconnected with the possibility of rotation relative to each other by a quarter of turn.

Figure 1. depicts a frontal projection of the incision device outside of the closed position; figure 2 - external cross-section in figure 1 in the process of “Closing”; figure 3 is a front projection of the incision device working in the open position; figure 4 - external cross-section of figure 3; figure 5 is a section along the line a-a in Fig in the process of “Discovery”.

The hollow body 1 (Fig 1) consists of a fragment of the discharge pipe located on vertically stretch the mouth of the valve, the so-called “gander” (not shown). Inside the hollow body 1 is body control the flow of multicomponent gas-liquid medium in the form of a flap 2 of two halves that are attached to the shaft 3 of the rotary support, for example by welding. The diameter of the valve 2 is smaller than the internal diameter of the hollow body 1, which forms an annular gap 4 (figure 4) for the passage of the mixed flow of multicomponent gas-liquid environment during sampling. Select the camera in the form of an annular cavity 5 is made in the boss 6, is welded to a hollow body 1. The annular cavity 5 is communicated to the inlet flow of multicomponent gas-liquid medium through the intake channels made on the hollow body 1 in the form of lateral slits 7 (figure 4), located symmetrically to the axis of rotation of the valve 2, and the output is shut-off body is installed on the continuation of the shaft 3 of the valve 2 through radial 8 and 9 Central hole of the shaft 3.

A stop valve consists of a seat 10 (Fig 1), with the guide tube 11 attached to the valve housing body 12 on the strip 13 by means of a cap nut 14. Valve sampling 15 is located in the valve housing body 12 and the plug 16 and is connected to the shaft 3 of the valve 2 through the floors of the intermediate shaft 17 by threaded connection 18, for example, with a normal (right) direction. The head of the intermediate shaft 17 is located in an annular groove (not shown) of the housing of the shut-off body 12, which prevents axial displacement of the intermediate shaft 17. The castle end of the shaft 3 of the valve 2 is made in the form of a square (figure 2, 5) with rounded opposite angles so that the locking end of the shaft 3 could be rotated a quarter turn 90° in the opposite direction of rotation relative to the intermediate shaft 17 in the groove 19 after closing the valve of the sample 15, the width of the groove 19 is equal to the side of the square at the castle end of the shaft 3. Such idle rotation shaft 3 of the valve 2 is required in cases when after closing the shut-off body of the valve 2 was, for example, across the flow of fluid in the hollow body 1 at the same time, when the door 2 after sampling should take the vertical position (figure 1), so as not to impede the flow of the produced fluid.

The boss 6 (figure 1) attached to the casing stuffing the cavity 20 within which is located a seal 21, a gland 22 and the push nut 23. At the free end of the shaft 3 with the arm 24.

For sampling of multi-component gas-liquid environment must be installed under the guide tube 11 (Fig 1) cumulative capacity (not shown), by means of a lever 24 to rotate the shaft 3 of the valve 2 in the direction of rotation of the hour the plate, i.e. to the right. The valve sampling 15 on the thread 18 moves away from the seat 10 and opens at the same time the rotation of the valve 2 selected environment is mixed and enters the holding tank. The flap 2 is left in the closed position (Fig 3, 4) and the flow of selected mixture begins to pass through the annular gap 4, the side of the slot 7 into the chamber of the sample 5, and thence through radial 8 (figure 4), Central 9 holes of the shafts 3, 17 and openings 25 in the valve head sampling 15 enters the holding tank. After typing the required volume of the sample by rotating the handle 24 to the left, close the valve of the sampling 15, automatically combining the mixing take samples through the valve, which increases the quality of the sampling. At the end of the sample it is necessary that the valve remained in a vertical position. If you want to use “idle rotation” of the shaft 3 relative to the intermediate shaft 17.

To improve the quality of integrated sampling recommended: ajar (intermediate) position valve sampling 15 arm 24 rotates to the right and left alternately, for example, for convenience ±2 turnover, which provides better mixing of the selected liquid.

The use of sampling equipment will simplify its construction and maintenance, as well as Powys the th quality sampling multicomponent gas-liquid environment.

Sampling device for integrated sampling multicomponent gas-liquid medium containing installed in the pressure pipe wellhead equipment of the hollow body inside which there is a shaft with Salnikov seal and the handle is body control the flow of multicomponent gas-liquid environment, select the camera with intake channels, the locking body with the guide tube, wherein the hollow body is a fragment of the discharge pipe located on vertically stretch the mouth of the valve body of the flow control multicomponent gas-liquid medium is made in the form of the valve of smaller diameter than the inner diameter of the hollow casing, and the selected camera is a ring cavity in the hollow body, located at the level of the valve and is communicated to inlet flow of multicomponent gas-liquid medium through the intake channels made on the hollow body in the form of lateral slits arranged symmetrically to the axis of rotation of the valve, a valve body mounted on the continuation of the shaft of the damper and is designed as a valve sampling, which is located in the valve housing body with the possibility of reciprocating movement and connected with the shaft of the valve through the hollow intermediate shaft, the shaft ASDs is once and the intermediate shaft interconnected with the possibility of rotation relative to one another quarter turn.



 

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