RU2355874C1 - Gas well piping - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: invention relates to mechanics and, particularly to service pipelines and may be used in primary production namely, for connecting wellhead equipment with gas or gas condensate gathering pipeline and metered supply of methanol to wellhead valves. Gas well piping consisting of valves, manifolds, flanges, inhibitor supply system, metering device, check valves includes connection unit to common cluster lines. In addition connection unit to common cluster lines, inhibitor supply system, metering devices, pipelines and manifolds are flange connected between each other by means of pins and washers. Connection unit to common cluster lines contains frame with welded manifolds being mounted on it, valves and check valves fixed to the frame by couplers. The inhibitor supply system is implemented with a frame. All instrumentation and supply pipeline are installed on the above frame. Pipelines include shutoff lines, gas extraction lines and methanol supply lines. The construction of gas well piping as disclosed by the invention allows for sequential installing and actuating common cluster gas collecting lines, producing stalk, supplying inhibitor and operating with each piped gas well as soon as it is ready, ensuring common cluster lines integrity.

EFFECT: avoidance of welds allows for facilitating and speeding up gas well piping installation and repair.

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Description

The invention relates to the field of mechanics, namely to technical pipelines, and can be used in the mining industry, in particular for connecting wellhead equipment with a common gas and gas condensate collection line, as well as for dosed supply of methanol to wellhead valves.

Known strapping of a gas well, including a tee, transition, branch, fitting, pipe, flange and consisting of eighteen nodes strapping of a gas well (RF Patent No. 225202, publ. June 27, 2005).

Known strapping of a gas well, including a tee, transition, branch, fitting, pipe, flange and consisting of seventeen nodes strapping of a gas well (RF Patent No. 2269645, publ. 02/10/2006).

These design of gas well piping allow installation and commissioning of general bush lines for gas collection, inhibitor supply, and flare only after tying all the well wells.

The objective of the invention is to develop the design of the strapping of gas wells, which allows to sequentially install and put into operation general bush lines for collecting gas, going out to the candle, supplying an inhibitor and each strapped gas well as it is ready, while ensuring the tightness of the general bush lines. In addition, the object of the invention is the replacement of welded joints in the design of the piping of gas wells for flanged ones, which greatly simplifies its repair.

The task is achieved in that the gas well piping containing valves, manifolds, flanges, inhibitor supply unit, flow meter device, check valves, includes a unit for connecting to general bush lines. At the same time, the connection block to the general bush lines, the inhibitor supply unit, flowmeter devices, pipelines and collectors are interconnected by means of flange connections using studs and nuts. The connection block to the general bush lines contains a frame with welded collectors, valves and check valves installed on it, clamps fixed to the frame. The inhibitor supply unit is made in the form of a frame with devices installed on it and a supply manifold. Pipelines include gas lines, gas lines, methanol feed lines.

The invention gas piping is illustrated in the detailed description and drawings, in which:

Figure 1 - depicts a General view of the piping of gas wells;

Figure 2 - depicts an enlarged view And the binding of gas wells;

Figure 3 - depicts an enlarged view B of the binding of gas wells;

Figure 4 - depicts an enlarged view In the binding of gas wells;

Figure 5 - depicts an enlarged and rotated view G strapping of gas wells;

6 - depicts an enlarged and rotated view D strapping of gas wells.

The piping of gas wells consists of a block for connecting to general bush lines 1 (Fig. 1), an inhibitor 2 supply unit, flowmeter devices 3 of pipelines 4-23 and collectors 24, 25 connected to each other by flange joints using studs and nuts.

The connection block to the general bush lines contains a frame 26 (Figure 2) with nodes 27, 28 symmetrically mounted on it (Figure 1), each of which includes a collector 29 and 30, valves 31, 32 and a check valve 33 and is fixed to frame clamps. The collector 30 is equipped with two tees and a flange. Also, on the frame 26, a manifold 34 is made and secured with clamps, made in the form of a pipe segment, by welding connected to the flange, the latter connected to the valve flange 35.

The inhibitor supply unit includes a frame 36 with installed devices 37, 38 and collectors 39.

Pipelines 4-23 (Fig. 1) and collectors 24, 25 (Figs. 1, 5) are made in the form of pipe segments of the required length and bends, interconnected by welding, and flanges installed at both ends of the pipeline by welding.

Pipelines 4 and 5 are connected by one of their flanges to the flanges of the unit for connecting to general bushes lines 1, and their other flanges are connected to the flanges of flowmeter devices 3. Pipelines 7, 8 and one of their flanges are connected to the free flanges of flowmeter devices 3. Pipelines 7, 11, the collector 24a and are connected in series with each other using studs and nuts. The collector 24a is connected by its free flange to the flange of the flow line of the fountain fittings FA2 (Figure 1). Pipelines 8, 14, collector 25a are connected in series with each other using studs and nuts. The collector 25a is connected by its free flange to the flange of the flow line of the fountain fittings FA2.

Pipelines 4, 7, 11, manifold 24a and pipelines 8, 14, collector 25a form a gas collection line.

The pipeline 6 is connected by one of its flanges with studs and nuts to the flange of the gate valve of the manifold 35, and the second flange is connected to the flange of the methanol distribution unit, also by means of studs and nuts. The pipe 6 is connected by means of studs and nuts to the pipe 9 and they form a methanol supply line.

Pipelines 20-23 (Figs. 1, 4) are provided with gate valves 40.

Pipelines 20, 16, 10 and the collector 24B are connected in series with each other using studs and nuts and form a gas line for gas wells.

Pipelines 21, 17, 12 and collector 24b are connected in series with each other using studs and nuts and also form a gas line for gas wells.

Pipelines 22, 18, 13 and collector 25b are connected in series with each other using studs and nuts and form a gas line for gas wells.

Pipelines 23, 19, 15 and collector 24b are connected in series with each other using studs and nuts and also form a gas line for gas wells.

The binding of gas wells is mounted as follows.

Previously, the connection block to the general bush lines 1 is installed on the supports and tees 41, 42 of both its nodes and 43 (Figure 2) are connected by welding to the general bush lines: gas collection 44, exit to the torch 45, supply of the inhibitor 46 (Figure 1) . After that, the valves of both nodes of the block connecting to the general bush lines 31.32 and the valve 35 are closed and ensure the tightness of the general bush lines during subsequent work on the wells of the bush. In this way, the installation of well connection blocks to the general lines of all planned wells can be performed and put into operation as they are ready.

After installing the fountain fittings FA1, FA2 in the wells (Figure 1), the gas piping is directly installed, all connections in which are performed using studs and nuts.

A methanol distribution unit 2 is mounted on the supports.

Collectors 24a and 25a, 24b and 25b are attached to the flanges of the upper strings of the fountain valves (Figs. 1, 5).

The collectors 24a and 25a are connected in series with the pipelines 11, 7 and 14, 8, respectively.

The methanol distribution unit 2 (FIG. 1) is connected via collectors 39 (FIG. 3) to the gas collection lines.

The free flanges of the collector 7 and 11 are connected to the flanges of the flow meter devices 3, the free flanges of which are connected to the flanges of two nodes of the unit for connecting to general bushes 1.

The pipeline 9 with one of its flanges is connected to the flange of the methanol distribution unit 2, and the second flange with the pipe 6, the latter is connected to the flange of the valve 35 (Fig 2) of the unit for connecting to general bush lines 1 (Figure 1).

Collectors 24v and 25v are connected to the flanges of the lower strings of the fountain valves.

The collectors 24b and 25b are connected in series with pipelines 12, 17, 21 and 15, 19, 23, respectively.

The collectors 24v and 25v are connected in series with the pipelines 10, 16, 20 and 13, 18, 22, respectively.

Then, the pressure test of gas wells is tested for test pressure and launch into production.

Collectors 20-23 are connected, if necessary, to the apparatus for setting the well.

The developed design of gas well piping allows you to sequentially install and put into operation general bush lines for gas collection, exit to the candle, supply of an inhibitor and each tied gas well as soon as it is ready, while ensuring the tightness of general bush lines. The exclusion of welded joints allows to facilitate and accelerate the installation of gas well piping and its repair.

Claims (1)

A gas well bundle containing valves, manifolds, flanges, an inhibitor supply unit, a flowmeter, check valves, characterized in that it includes a connection to general scrub lines, while a connection block to general scrub lines, an inhibitor supply unit, flowmeter devices, pipelines and the collectors are interconnected by means of flange connections, using studs and nuts, while the unit for connecting to general bush lines contains a frame with welded collectors, valves installed on it and non-return valves fixed to the frame with clamps, in addition, the inhibitor supply unit is made in the form of a frame with devices installed on it and a supply manifold, while the pipelines include pressure lines, gas extraction lines, and a methanol supply line.

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