Sampling device

FIELD: oil field equipment, particularly for take samples from wellhead, namely for integrated sampling multi-component gas-liquid medium transported through pipelines.

SUBSTANCE: device has hollow body built in pressure pipeline and formed as a part of the pipeline located on vertical part of wellhead fittings. Multi-component gas-liquid medium flow control unit is made as a gate connected to rotary support shaft. Sampling chamber is created as annular cavity arranged on hollow body at gate level. Sampling chamber inlet is communicated with multi-component gas-liquid medium flow through intake manifolds formed on hollow body. Intake manifolds are side slots arranged symmetrically about gate axis of rotation. Sampling chamber outlet is communicated with shutoff member installed on rotary gate support shaft extension. Shutoff member includes seat, hold-down screw and ball contacting with the seat and embedded in pressure screw end.

EFFECT: simplified structure and increased sampling quality.

2 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 G1)containing installed in the system wellhead equipment of the hollow body. Inside is the body control the flow of multicomponent gas-liquid environment, equipped with sealing elements and a control handle, a sampling chamber 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. 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 of the device and improving the quality of sampling multicomponent gas-liquid environment.

Task d is highlighted by the fact that that hollow body consists of 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 with the shaft rotational 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 shut-off body is installed on the continuation of the shaft rotational support Assembly.

1 shows a section of the sampling device along the line B-B in figure 2; figure 2 is a section along the line A-a in figure 1.

The hollow body 1 (Fig 1) consists of a fragment of the discharge pipe located on vertically stretch the mouth of the valve (not shown). Inside the hollow body 1 is body control the flow of multicomponent gas-liquid medium in the form of a flap 2, which is connected with the shaft 3 of the rotary support, for example, for electric arc welding. Select the camera in the form of an annular cavity 4 is made in the boss 5, is welded to a hollow body 1. The annular cavity 4 reported on the entrance with the flow of multicomponent gas-liquid environment cher is C intake channels, performed on the hollow body 1 in the form of lateral slots 6 (figure 2), 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 rotational shaft supports, shaft 3, the valve 2.

A stop valve consists of a seat 7, with the United boss 5 on the one hand and the housing 8 of the locking device on the other. At the end of the clamping screw 9 with the control arm 10 mounted ball 11 in contact with the saddle 7. The casing 8 is provided with a guide pipe 12. On the opposite from the locking device side mounted rotary bearing damper 2, which (bearing) consists of holes in the hollow body 1 and the housing 13 of the rotational support flap 2 on the shaft 3 of the valve 2. In the housing 13 of the rotational support flap 2 are the seal 14 with Grund-panel Jack 15 and pojemnoe nut 16. At the end of the shaft 3 with the arm 17 (Fig 1), depicted in phantom line, corresponding to a non-working position 18 of the valve 2. The diameter of the valve 2 is less than the internal diameter of the hollow body 1 through which flows of multicomponent gas-liquid mixture. This allows for the selection of the sample in the closed position of the valve 2 (figure 1) to maintain some flow of multicomponent gas-liquid mixture through formed between the hollow body 1 and the flap 2 of the annular gap 19 (figure 2), almost no drug is Shay component ratio of the gas-liquid mixture. And full closure of the valve 2 would lead to the accumulation of light fractions front flap, and eventually to the violation of the proportionality of all components contained in the process stream.

For sampling of multi-component gas-liquid mixture should turn the handle 17 90° close the valve 2 (figure 1) and immediately open the shut-off body by rotation of the control arm 10. The collected sample on the lateral slots 6 gets into the ring groove 4, a locking device and through the guide tube 12 into the accumulation tank (not shown). After sampling the closure device is closed by means of the handle 10, the valve 2 is opened and placed in position 18, which corresponds to the position of the arm 17.

To ensure proportionality of all components contained in the process stream multicomponent gas-liquid mixture, it is necessary that in the process of sampling valve 2 intensively opened, then closed, thereby forcing the mixing of the sample material.

The introduction of the proposed sampling device leads to simplification of the structure and improve the quality of sampling.

Sampling device for integrated sampling multicomponent gas-liquid medium containing the plant in pressure pipeline wellhead equipment of the hollow body, inside is the body control the flow of multicomponent gas-liquid environment on the shaft rotational support Salnikov seal, selected chamber with intake channels, a stop valve with a handle and 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 executed in the form of a valve connected with the shaft rotational 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, and the output - c shut-off body is installed on the continuation of the rotational shaft bearing damper, with a stop valve consists of a seat, the clamping screw and in contact with the saddle ball, built at the end of the clamping screw.



 

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7 cl, 3 dwg

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3 cl, 6 dwg, 1 tbl

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3 dwg

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2 cl, 3 dwg

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3 dwg

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3 dwg

FIELD: oil industry.

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4 dwg

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Device for sampling // 2242607
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The invention relates to a chemical sensor for use in downhole fluid analysis

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2 dwg

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