CN210977404U - Foam flushing and blowout reducing device for oil and gas well - Google Patents

Abstract

The utility model relates to an oil gas well foam well-flushing subtracts and spouts device, including linking gradually the foam and carrying outer tube straight tube, foam transport inner tube, the foam is carried outer tube straight tube one end and is irritated with the blowout and be connected, and foam transport inner tube one end and well head blowout exit linkage, the foam is carried the outer tube straight tube and is carried the inner tube with the foam and pass through the connecting piece and be connected, the utility model discloses beneficial effect: the blowout reducing device is connected with the blowout reducing outlet at the wellhead, and after the returned liquid enters the blowout reducing device, the returned liquid is shunted to the large outer diameter pipe through the small inner diameter pipe, and the impact force of the returned liquid is rapidly reduced through the buffering of the bent pipe, so that the existing problem is effectively solved.

Description

Foam flushing and blowout reducing device for oil and gas well

Technical Field

The utility model relates to a the utility model relates to an oil gas well-flushing subtracts and spouts operation equipment technical field, in particular to oil gas well foam well-flushing subtracts and spouts device.

Background

Well washing is a conventional means in daily management of a water injection well, aggregates in a shaft can be effectively removed, and pollution of an oil layer near a perforation blasthole is reduced. Compared with other well washing media, the foam well washing medium has the characteristics of low density, good portability and low damage, and has a certain stripping and removing effect on well wall attachments. Conventional foam well flushing employs injecting air to mix with water for well flushing. Because the injected air contains oxygen, the light hydrocarbon component and the oxygen in the stratum form mixed gas, and when the concentration of the oil gas is within the range of 5-15%, explosion can occur when the oil gas meets open fire, so that great potential safety hazard exists. And because the nitrogen is wide in source and stable in property, the nitrogen is used as a gas source to be mixed with water for low-density foam well flushing, so that the well flushing efficiency is high, and the construction is safe. In the process of nitrogen foam well washing operation of an oil-water well, a blowout outlet is very large in spraying potential due to the fact that nitrogen foam is contained, impact on blowout irrigation is large, the existing technical problem is that the blowout device is directly connected with a wellhead blowout outlet and the blowout irrigation through a single straight pipe pipeline, return liquid is easy to splash into a construction site, and environmental pollution is caused. Even leading to the loosening of the blowout outlet, which can threaten the personal safety.

Disclosure of Invention

The utility model aims at solving the above problems, and the utility model provides an oil gas well foam well-flushing blowout reduction device.

The utility model discloses a realize through following technological means: the utility model provides an oil gas well foam well-flushing subtracts spouts device, carries the inner tube including the foam that connects gradually outer tube straight tube, foam, and outer tube straight tube one end is carried with the blowout and is irritated and be connected, and inner tube one end is carried with well head blowout exit linkage to the foam, and the outer tube straight tube is carried to the foam passes through the connecting piece with the foam inner tube is carried to the foam and is connected. According to the further technical scheme, the foam conveying outer pipe straight pipe is connected with the open flow irrigation through the buffering bent pipe.

According to the technical scheme, the connecting piece is a flange reducer pipe, and flanges are arranged at two ends of the flange reducer pipe.

Further technical scheme, be provided with flange on the foam transport inner tube, flange falls into the foam transport inner tube and cup joints inner tube and external inner tube two parts, cup joints the inside of inner tube setting at the foam transport outer tube straight tube, cup joints and is provided with the outage on the inner tube wall, cup joints the inner tube port and is provided with the casing cap, is provided with flange on the foam transport outer tube straight tube, flange reducer pipe passes through the flange dish at both ends and connects flange that sets up on the foam transport outer tube straight tube respectively and the flange that sets up on the foam transport inner tube.

The size of further technical scheme foam transport inner tube is 3 cun pipelines, and the foam transport outer tube straight tube is 6 cun pipelines, and the buffering return bend is 6 cun 90 degrees return bend, and the flange reducing pipe is 6 cun flange reducing pipe that becomes 3 cun.

The utility model discloses beneficial effect: the blowout reducing device is connected with the blowout reducing outlet at the wellhead, and after the returned liquid enters the blowout reducing device, the returned liquid is shunted to the large outer diameter pipe through the small inner diameter pipe, and the impact force of the returned liquid is rapidly reduced through the buffering of the bent pipe, so that the existing problem is effectively solved.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention; fig. 2 is a schematic structural view of embodiment 2 of the present invention; fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.

Wherein, open flow irritates 1, buffering return bend 2, foam transport outer tube straight tube 3, flange reducing pipe 4, foam transport inner tube 5, well head open flow export 6, outage 7, inner tube flange 8, outer tube flange 9, pipe plug 10.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Wherein figure 2 embodiment 2 an oil gas well foam well-flushing subtracts and spouts device, including linking gradually foam transport outer tube straight tube 3, foam transport inner tube 5, foam transport outer tube straight tube 3 one end with put sprinkling irrigation 1 and be connected, foam transport inner tube one end and well head blowout outlet 6 are connected, foam transport outer tube straight tube 3 and foam transport inner tube 5 pass through the connecting piece and are connected. Figure 3 embodiment 3 a gas well foam well-flushing subtracts that spouts device connects gradually cushion return bend 2, foam transport outer tube straight tube 3, flange reducing pipe 4, foam transport inner tube 5, 2 one end of cushion return bend and open flow irritate 1 and be connected foam transport inner tube one end and well head open flow export 6 and be connected, and foam transport outer tube straight tube 3 passes through the connecting piece with foam transport inner tube 5 and is connected. According to the oil and gas well foam flushing blowout reducing device in the embodiment 1 shown in the figure, a buffer bent pipe 2, a foam conveying outer pipe straight pipe 3, a flange reducer pipe 4 and a foam conveying inner pipe 5 are sequentially connected, one end of the buffer bent pipe 2 is connected with a blowout irrigation tank 1, one end of the foam conveying inner pipe 5 is connected with a wellhead blowout outlet 6, a connecting flange 8 is arranged on the foam conveying inner pipe, the foam conveying inner pipe is divided into a sleeve inner pipe and an external inner pipe by the connecting flange, the sleeve inner pipe is arranged inside the foam conveying outer pipe straight pipe, a liquid discharge hole 7 is formed in the wall of the sleeve inner pipe, a pipe plug 10 is arranged at an end opening of the sleeve inner pipe, a connecting flange 9 is arranged on the foam conveying outer pipe straight pipe, and the flange reducer pipe 4 is respectively connected with the connecting flange 9 arranged on the foam conveying outer pipe straight pipe and the connecting flange 8. Connect at well head blowout outlet 6 and subtract the device of spouting, after returning the liquid and getting into to subtract the device of spouting, carry 5 little inside diameter pipes of inner tube to the 3 big external diameter pipes of foam delivery outer tube straight tubes reposition of redundant personnel through the foam, reduce rapidly and return the liquid impact force degree, the buffering of buffering return bend 2, it is big to the impact of putting the sprinkling irrigation because of the blowout outlet contains nitrogen gas foam effectively to solve in the oil-water well nitrogen gas foam well-flushing operation process, it is easy to spatter the construction site to return the liquid, cause environmental pollution, lead to the not hard up technical problem of blowout outlet even. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an oil gas well foam well-flushing subtracts spouts device, characterized by, carries outer tube straight tube, foam including the foam that connects gradually and carries the inner tube, and outer tube straight tube one end is carried with the blowout and is irritated and be connected to the foam, and inner tube one end is carried with well head blowout exit linkage to the foam, and the outer tube straight tube is carried to the foam passes through the connecting piece with the foam inner tube is carried to the foam and is connected.

2. The foam well-flushing blowout-reducing device for the oil-gas well as claimed in claim 1, wherein the foam delivery outer pipe straight pipe is connected with the blowout-irrigation tank through a buffer bent pipe.

3. The foam well-flushing blowout-reducing device for the oil and gas well as claimed in claim 1, wherein the connecting member is a flange reducer, and flanges are arranged at two ends of the flange reducer.

4. The foam well-flushing blowout-reducing device for the oil-gas well as claimed in claim 1, wherein the foam conveying inner pipe is provided with a connecting flange, and the foam conveying outer pipe straight pipe is provided with a connecting flange.

5. The oil and gas well foam well-flushing blowout-reducing device according to claim 4, wherein the foam conveying inner pipe is divided into a sleeved inner pipe and an external inner pipe by a connecting flange arranged on the foam conveying inner pipe, the sleeved inner pipe is arranged inside a straight pipe of the foam conveying outer pipe, a drain hole is arranged on the wall of the sleeved inner pipe, and a pipe plug is arranged at a port of the sleeved inner pipe.

6. The foam well-flushing blowout-reducing device for the oil-gas well as claimed in claim 5, wherein the flange reducer is respectively connected with a connecting flange arranged on the straight pipe of the foam conveying outer pipe and a connecting flange arranged on the foam conveying inner pipe through flange plates at two ends.

7. The oil and gas well foam well-flushing blowout-reducing device according to claim 6, wherein the size of the foam conveying inner pipe is 3 inches of pipeline, the size of the foam conveying outer pipe is 6 inches of pipeline, the size of the buffer bent pipe is 6 inches of 90-degree bent pipe joint, and the size of the flange reducer pipe is 6 inches of 3 inches of flange reducer pipe.

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