CN112539044A - Blowout device and gas production equipment - Google Patents

Abstract

The invention provides a blowout device and gas production equipment, and relates to the field of oil and gas exploitation. Wherein, the blowout device includes: a blow-off pipe and a pipe expanding; the expanding pipe is sleeved on the outer side of the tail end of the blow-off pipe and is fixed with the blow-off pipe, and a channel for fluid to flow is formed between the expanding pipe and the blow-off pipe; the front end of the expanding pipe is provided with at least one through hole, and the through hole is used for being matched with oil gas sprayed out from the tail end of the blow-off pipe so as to form negative pressure in the channel and suck air near the through hole into the channel; an ignition mechanism is arranged near the through hole and used for igniting the mixed gas of the oil gas and the air. According to the blowout device and the gas production equipment, when oil gas is ejected from the tail end of the blowout pipe, negative pressure can be formed in the channel, so that air near the through hole is sucked into the channel, and the mixed gas of the oil gas and the air is ignited through the ignition mechanism, so that the ignition efficiency and the safety of personnel operation are improved.

Description

Blowout device and gas production equipment

Technical Field

The invention relates to the field of oil and gas exploitation, in particular to a blowout device and gas production equipment.

Background

In the exploration and development of oil gas, before the well is opened, oil gas in the well needs to be sprayed to the outside under the manual control so as to remove residual impurities at the bottom of the well, improve the oil gas extraction temperature and avoid the blockage of a shaft caused by the generation of hydrates, and the technological process is namely the open flow in the oil gas extraction. Because there is a large amount of oil gas to spout from the blowout pipeline in the blowout process, in order to guarantee that these oil gas do not pollute external environment, can adopt the mode of burning will follow the interior spun oil gas burning of blowout pipeline usually.

In field operation, the oil gas sprayed from the blowout pipeline is generally ignited by manual ignition. For example, an ignited primer is hung on a blowout nozzle head at the tail end of the blowout pipeline, so that when a valve on the blowout pipeline is opened to enable oil gas to be sprayed out of the blowout nozzle head at the tail end of the blowout pipeline, the sprayed oil gas can be ignited by a fire source hung on the blowout nozzle head.

However, because the existing nozzle placing head is generally arranged above the nozzle placing pool and is higher from the pool bottom, a worker can not easily hang a fire source on the nozzle placing head, and the problem that the fire source falls off to burn or burns the worker often occurs.

Disclosure of Invention

The invention aims to provide a blowout device and gas production equipment, which are used for solving the defects in the prior art and improving the safety of blowout operation in the gas production process.

One aspect of the present invention provides a blowout device, comprising: a blow-off pipe and a pipe expanding;

the expanding pipe is sleeved on the outer side of the tail end of the blow-off pipe and is fixed with the blow-off pipe, and a channel for fluid flowing is formed between the expanding pipe and the blow-off pipe;

the front end of the expanding pipe is provided with at least one through hole, and the through hole is used for being matched with oil gas sprayed out from the tail end of the blow-off pipe so as to form negative pressure in the channel and suck air near the through hole into the channel;

an ignition mechanism is arranged near the through hole and used for igniting the mixed gas of the oil gas and the air.

Optionally, the pipe expander includes a pipe wall and a front end surface inclined to the blow-off pipe, and the through hole is disposed on the front end surface or on the pipe wall.

Optionally, the through-holes are multiple, and the through-holes are uniformly formed in the periphery of the blow-off pipe.

Optionally, at least two rings of through holes are provided around the blow-off pipe.

Optionally, the front end face of the expander is threadedly connected with the blow-off pipe.

Optionally, the length of the blowout pipe extending into the expanded pipe is greater than the distance from the through hole to the front end of the expanded pipe.

Optionally, the device further comprises a support, the support is arranged in the expanding pipe, one end of the support is fixed to the inner wall of the expanding pipe, and the other end of the support is fixed to the outer wall of the blowing pipe.

Optionally, the ignition mechanism is an ignition basin, and the ignition basin is hung on the expansion pipe.

Optionally, the ignition mechanism is a pulse igniter comprising an ignition switch, a high voltage assembly and an ignition needle;

the ignition needle penetrates through the through hole, extends into the expansion pipe and extends towards the tail end of the blowout pipe;

the high-voltage assembly is electrically connected with the ignition needle;

the ignition switch is electrically connected with the high-voltage component and used for controlling the high-voltage component to generate electric arc on the ignition needle so as to ignite the mixed gas of the oil gas and the air.

In another aspect, the present invention provides a gas production apparatus comprising: the gas production tree and the open flow device are characterized in that the open flow port of the gas production tree is communicated with the open flow pipe of the open flow device.

The invention provides a blowout device and gas production equipment, wherein the blowout device comprises a blowout pipe and an expansion pipe, the front end of the expansion pipe is sleeved and fixed at the tail end of the blowout pipe, and a channel for fluid to flow is formed between the blowout pipe and the expansion pipe; further, a through hole is provided at the tip of the expanding tube. Therefore, after the blowout is started, the tail end of the blowout pipe ejects oil gas flowing at a high speed, the oil gas is matched with the through hole to form negative pressure in a channel between the blowout pipe and the expansion pipe, air near the through hole can be sucked into the channel by the negative pressure, mixed gas of the oil gas and the air at the tail end of the blowout pipe is ignited by the ignition mechanism arranged near the through hole, the oil gas is ignited, and the ignited mixed gas is ejected from the tail end of the expansion pipe, so that the phenomenon that the ignition device is hung at the tail end of the blowout pipe to realize the blowout ignition is avoided, and the safety of ignition operation in the gas production process is improved.

Drawings

The above advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a front view of a first blowout device according to a first embodiment;

FIG. 2 is a left side view of a first blowout device according to a first embodiment;

FIG. 3 is a left side view of a second blowout device according to the first embodiment;

FIG. 4 is a front view of a third blowout device according to the first embodiment;

FIG. 5 is a front view of a fourth blowout device according to the second embodiment;

FIG. 6 is a front view of a fifth blowout device according to the second embodiment;

FIG. 7 is a right side view of a fifth blowout device according to the second embodiment;

FIG. 8 is a schematic view of the structure of the bracket provided in the second embodiment;

FIG. 9 is a front view of a sixth blowout device according to the second embodiment.

Reference numerals:

10: discharging the spray pipe; 101: a blow-off valve; 20: expanding the pipe;

201: a front end face; 202: a through hole; 203: a channel;

30: a support; 301: an outer ring; 302: an inner ring;

40: gas production trees; 401: placing a nozzle; 50: an ignition basin;

601: an ignition switch; 602: a high voltage component; 603: an ignition needle.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The following describes the technical solutions of the present invention and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

It should be noted that the terms "first", "second", "third", "upper", "lower", "front", "rear", "left", "right", etc. in the description and claims of the present invention and the accompanying drawings indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example one

Fig. 1 is a front view of a first blowout device provided in this embodiment. Fig. 2 is a left side view of the first blowout device provided in this embodiment. Fig. 3 is a left side view of the second blowout device provided in this embodiment. Fig. 4 is a front view of a third blowout device provided in this embodiment.

Referring to fig. 1 to 4, the blowout device provided in this embodiment includes: a blow-off pipe 10 and an expander 20; the expanding pipe 20 is sleeved on the outer side of the tail end of the blowout pipe 10 and fixed with the blowout pipe 10, and a channel 203 for fluid flowing is formed between the expanding pipe 20 and the blowout pipe 10. At the front end of the expansion pipe 20, at least one through hole 202 is provided, and the through hole 202 is used for cooperating with oil gas ejected from the tail end of the blowout pipe 10 to form negative pressure in the passage 203 so as to suck air near the through hole 202 into the passage 203.

An ignition mechanism is arranged near the through hole 202 and is used for igniting the mixed gas of oil gas and air at the tail end of the blowout pipe.

Specifically, in this embodiment, the blowout pipe 10 can be a circular steel pipe having a smooth inner wall, so as to prevent solid foreign particles mixed in oil gas from attaching to the inner wall of the blowout pipe 10 during the blowout process. It will be readily appreciated that, since the expander 20 is required to be fitted over the outside of the lance 10, a portion of the inner surface of the expander 20 matches the shape of a portion of the outer surface of the lance 10. For example, assuming that the blow-off pipe 10 is a circular steel pipe, the expander 20 may be a circular steel pipe having a larger radius than the blow-off pipe 10 to ensure an unobstructed flow of fluid in the passage formed between the expander 20 and the blow-off pipe 10. Here, the present embodiment is only an exemplary embodiment showing an alternative form of the expanding pipe 20 and the blow-off pipe 10, and of course, the blow-off pipe 10 and the expanding pipe 20 may also be a square pipe or any other suitable form, and the present embodiment does not specifically limit the same.

In order to prevent relative movement of the lance 10 and the expander 20, the outside of the trailing end of the lance 10 is fixedly connected to the expander 20. For example, the front end of the expanded pipe 20 is provided with a front end face 201, the front end face 201 is provided with a mounting hole for the tail end of the blowout preventer 10 to pass through, and the expanded pipe 20 and the blowout preventer 10 are fixedly connected through the front end face 201. In this embodiment, the trailing end of the blow-off pipe 10 may be fixed to the expander 20 through a through-hole of the leading end surface of the expander 20. For example, the wall of the rear end of the blow-off pipe 10 and the wall of the mounting hole on the front end surface 201 can be welded to achieve reliable connection between the expanded pipe 20 and the blow-off pipe 10. Of course, the expander 20 is detachably connected to the blow-off pipe 10, for example, by a screw connection. Thus, the front end surface 201 of the expanded pipe 20 is detachably fixed with the tail end of the blow-off pipe 10 through a thread structure, so that the installation and operation are simple and reliable, and the replacement and maintenance of the expanded pipe 20 are facilitated. In an alternative specific example, the front end surface 201 of the expanded pipe 20 and the tail end of the blowout pipe 10 may be in snap-fit connection, that is, a protrusion is provided on a hole wall of an installation hole on the front end surface 201 of the expanded pipe 20 for the tail end of the blowout pipe 10 to pass through, a groove corresponding to the protrusion is provided on an outer wall of the tail end of the blowout pipe 10, and the blowout pipe 10 and the expanded pipe 20 are fixed by the installation and cooperation of the groove and the protrusion. Of course, there are many other alternative fixing methods, and this embodiment is only shown by way of example and not to limit the connection manner between the expander 20 and the blow-off pipe 10.

Referring to fig. 1, in the present embodiment, a front end surface 201 of the expanded pipe 20 is disposed perpendicular to a pipe wall of the expanded pipe 20; of course, in some embodiments, the front end surface 201 of the expander 20 may also be disposed obliquely toward the blow-off pipe 10; for example, in other embodiments, the front end surface 201 of the expander 20 may be provided with an arc-shaped surface structure. It should be understood that the front end surface 201 may have any suitable shape under the condition that the front end of the expanded pipe 20 and the blowout pipe 10 are formed with negative pressure during the blowout process, and the form of the front end surface 201 is not particularly limited herein.

Specifically, the front end surface 201 and the side wall of the expanded pipe 20 may be integrally formed or detachably connected. For example, in some examples, the front end face 201 and the side wall of the expander 20 may be joined together by welding. For another example, in other embodiments, the front end surface 201 and the side wall of the expanding tube 20 may be detachably connected by a connector, for example, the connector may be in the form of a bolt, a screw, or the like. If necessary, a sealing ring can be laid at the joint of the front end face 201 and the side wall of the expanded pipe 20 to realize the connection sealing performance of the front end face 201 and the side wall of the expanded pipe 20, so as to ensure that a negative pressure is formed between the front end of the expanded pipe 20 and the blowout pipe 10 in the blowout process. For example, in the present embodiment, the front end surface 201 and the side wall of the expanded pipe 20 may be an integrally formed structure, for example, the front end surface 201 and the side wall of the expanded pipe 20 are integrally formed by stamping, so as to simplify the process and save the cost.

Specifically, in this embodiment, referring to fig. 1-2, the expanded pipe 20 and the blowout pipe 10 may be concentrically sleeved together, that is, the central line of the expanded pipe 20 coincides with the central line of the blowout pipe 10, so that a uniform channel 203 for fluid to flow is formed between the blowout pipe 10 and the expanded pipe 20, so that air sucked through the through hole 202 can be uniformly mixed with oil gas ejected from the tail end of the blowout pipe 10, and the mixed gas of the oil gas and the air is ignited by the ignition mechanism, so that the oil gas ejected from the blowout pipe 10 is sufficiently combusted. Of course, the expanding pipe 20 and the blow-off pipe 10 can be sleeved together eccentrically, and this embodiment is not limited thereto.

In the present embodiment, the shape and number of the through holes 202 provided at the front end of the expander 20 are not particularly limited, and those skilled in the art can provide them according to actual needs. For example, in some examples, the through-hole 202 may be designed as a circular hole, an elliptical hole, or a closed or non-closed annular hole. For example, in some examples, an annular slit may be formed by the front end surface of the expander 20 and the outer wall of the blow-off pipe 10 so as to serve as an annular through hole.

Referring to fig. 2, in other examples, an arc-shaped hole may be formed on a front end surface 201 of the expanded pipe 20 as a through hole 202, during the blowout process, the blowout pipe 10 ejects oil gas flowing at a high speed, the oil gas flowing at a high speed rubs in a channel 203 between an inner wall of the expanded pipe 20 and an outer wall of the blowout pipe 10 to form a negative pressure at the front end of the expanded pipe 20, air near the arc-shaped hole is sucked into the expanded pipe 20 and flows along the fluid channel 203 formed by the expanded pipe 20 and the blowout pipe 10 to be mixed with the oil gas ejected from the tail end of the blowout pipe 10 to form a mixed gas, and the mixed gas is ignited to realize the blowout ignition under the action of the ignition mechanism.

In other examples, referring to fig. 3, when the blowout amount is not large, and the pipe diameter of the blowout pipe 10 is small, in order to ensure that a negative pressure is formed between the front end of the expander 20 and the blowout pipe 10 during the blowout process, a plurality of circular holes with small hole diameters may be arranged on the front end surface 201 at intervals instead of the arc-shaped holes as the through holes 202. For example, 5 circular holes may be provided as through holes in the lower portion of the front end surface 201, air near the 5 circular holes is sucked into the expansion pipe 20 and then mixed with the oil gas sprayed from the tail end of the blowout pipe 10, and the mixed gas is ignited by the ignition mechanism to achieve blowout ignition. Here, it should be understood by those skilled in the art that the shape, size and number of the through holes 202 may be selected in any suitable form according to the actual discharge amount to achieve the best discharge effect, and the embodiment is not limited thereto.

Further, with continued reference to fig. 2 and fig. 3, in the present embodiment, the through holes 202 are all disposed on the front end surface 201 of the expanded pipe 20, and during the blow-off process, the outside air is sucked into the expanded pipe 20 through the through holes 202 on the front end surface 201. In other alternative examples, the through holes 202 are all disposed on the wall of the expander 20. In other alternative examples, the through holes 202 may be simultaneously formed on the front end surface 201 of the expanded pipe 20 and the side wall of the expanded pipe 20, so that the number of the through holes 202 on the expanded pipe 20 is increased, more air enters the expanded pipe 20 through the through holes 202, the combustion of the oil gas sprayed through the blowout nozzle 10 is more sufficient, and the phenomenon that the combustion of the blowout material is insufficient to pollute the atmosphere is avoided.

Further, put the spray tube 10 and stretch into the length of expander 20 is greater than the through-hole 202 arrives the distance of expander 20's front end, also the pipeline length that the tail end of putting the spray tube 10 stretches into in the expander 20 will guarantee that all through-holes 202 on the expander 20 all are located the front end of putting the oil gas export of spray tube 10 tail end, so, avoid putting spray tube 10 tail end spun oil gas and flow out expander 20 through-hole 202 and discharge in the air, cause the pollution to the atmosphere, also avoided oil gas to have the operating personnel that probably spout the blowout device rear simultaneously on one's body, cause the potential safety hazard.

Further, as shown in fig. 1, an ignition mechanism is further arranged below the through hole 202, and the ignition mechanism is used for forming flame near the through hole 202, so that mixed gas of air and oil gas in the expansion pipe can be ignited, and open-flow ignition of a gas well in the oil extraction process is realized. For example, in some examples, the ignition mechanism may take the form of an ignition pot 50 for holding an ignition charge, such as a tarp or the like. Specifically, when the ignition pot 50 is installed, the ignition pot 50 is hung on the extension pipe 20, that is, the ignition pot 50 may be hung below the through hole 202 by a structure such as a wire rope. Taking a steel wire rope as an example, when assembling, one end of the steel wire rope is sleeved on the ignition basin 50, and the other end of the steel wire rope is hung on the through hole 202 through a hook, so that the ignition basin 50 is hung below the through hole 202, and meanwhile, the length of the steel wire rope can be adjusted to ensure that flame in the ignition basin 50 is gathered near the through hole 202, so that the flame near the through hole 202 is sufficient, and the steel wire rope is prepared for ignition of open-flow operation.

It should be noted that the number and the position of the ignition mechanisms may be determined according to the requirement of the on-site blowout, and this is merely an exemplary embodiment, for example, when the on-site blowout amount is large, the pipe diameters of the blowout pipe 10 and the expansion pipe 20 are correspondingly large, and sufficient flame required near all the through holes 202 can be satisfied by providing the corresponding ignition mechanism below each through hole 202; correspondingly, when the field blowout amount is small, the pipe diameters of the blowout pipe 10 and the expanded pipe 20 are small, so that the aperture of the through hole 202 corresponding to the expanded pipe 20 is small, and the requirement of flame near the through hole 202 can be met by arranging an ignition mechanism below the through hole 202; therefore, the number of the ignition mechanisms can be adaptively adjusted according to the specific blowing amount and the pipe diameter ratio of the blowout pipe 10 and the expanded pipe 20, for example, by adjusting the number of the ignition mechanisms or adjusting the pipe diameter ratio of the blowout pipe 10 and the expanded pipe 20, the mixing ratio of the mixed oil gas formed between the blowout pipe 10 and the expanded pipe 20 is prevented from being within the explosion limit of the oil gas, if the explosion is likely to occur within the explosion limit, the flame is ejected back from the through hole 202, so a person skilled in the art can set the ignition mechanisms according to the use requirement, and is not limited specifically herein. In addition, it should be understood that the flame requirement near the through hole 202 means that the flame formed near the through hole 202 is sufficient to ignite the gas-oil mixture in the extension tube.

Further, the ignition mechanism may also employ a pulse igniter. As shown in fig. 4, the pulse igniter may include an ignition switch 601, a high voltage assembly 602, and an ignition needle 603; an ignition needle 603 extends into the flared tube 20 through the through hole 202 and extends toward the end of the blowout tube 10, and a high-pressure assembly 602 and the ignition needle 603 are electrically connected; the ignition switch 601 is electrically connected to the high voltage assembly 602 for controlling the high voltage assembly 602 to generate an arc on the ignition needle 603 to ignite the mixture of the oil, gas and air in the extension tube 20.

For example, in the present embodiment, please refer to fig. 4, a touch switch is used as the ignition switch 601, the touch switch may be fixed on the wall of the blowout pipe 10 (for example, fig. 4 is fixed on the blowout pipe), and the touch switch is electrically connected to the high voltage component 602 through a cable. Here, it should be noted that the ignition switch 601 may be a hand-held remote switch, and this embodiment is not particularly limited thereto.

As shown in fig. 4, the high voltage assembly 602 is attached to one end of the firing pin 603 and the other end of the firing pin 603 extends toward the trailing end of the blow-off tube, e.g., the length of the firing pin 603 extends flush with the trailing end of the blow-off tube 10. Of course, in other examples, the ignition needle 603 may extend any length as long as it is sufficient to ignite the oil and gas ejected from the tail end of the blowout pipe 10.

When the blowout pipe is opened for blowout, oil gas jetted from the tail end of the blowout pipe 10 is mixed with air in the expansion pipe 20, and at this time, the ignition switch 601 is clicked to control the high-voltage component 602 to generate electric arc on the ignition needle 603 so as to ignite the mixed gas of the oil gas and the air in the expansion pipe 20, thereby realizing blowout ignition.

The blowout device provided by the embodiment comprises a blowout pipe 10 and an expansion pipe 20, wherein the front end of the expansion pipe 20 is sleeved at the tail end of the blowout pipe 10, meanwhile, the front end of the expansion pipe 20 is provided with a through hole 202, so that a channel 203 for fluid flowing is formed between the blowout pipe 10 and the expansion pipe 20, after blowout is started, oil gas flowing at a high speed is ejected from the tail end of the blowout pipe 10 and rubs against the inner wall of the rear end of the expansion pipe 20, so that negative pressure is formed at the front end in the expansion pipe 20, air near the through hole 202 is sucked into the expansion pipe 20 and flows along the channel 203 formed by the expansion pipe 20 and the blowout pipe 10 to be mixed with the oil gas ejected from the tail end of the blowout pipe to form mixed gas, and the mixed gas is ignited under the action of an ignition mechanism to realize blowout ignition. Therefore, the phenomenon that the ignition device is hung at the tail end of the blowout pipe 10 directly to realize blowout ignition is avoided, and the safety of blowout ignition operation in the gas production process is improved.

Example two

Fig. 5 is a front view of a fourth blowout device provided in this embodiment. Fig. 6 is a front view of a fifth blowout device provided in this embodiment. Fig. 7 is a right side view of a fifth blowout device provided in the present embodiment. Fig. 8 is a schematic view of the structure of the bracket provided in this embodiment. Fig. 9 is a front view of a sixth blowout device provided in this embodiment. Referring to fig. 5 to 9, on the basis of the above embodiments, the present embodiment provides an improved blowout device.

In the present embodiment, the front end surface 201 of the expanded pipe 20 is disposed obliquely to the blow-off pipe 10, that is, as shown in fig. 5, the front end surface 201 is disposed obliquely from top to bottom toward the left side in fig. 5.

Referring to fig. 6 to 9, in the present embodiment, a support 30 is disposed in an expanded pipe 20 to fix the expanded pipe 20 and a blowout pipe 10, the support 30 is disposed in the expanded pipe 20, one end of the support 30 is fixed to an inner wall of the expanded pipe 20, and the other end of the support 30 is fixed to an outer wall of the blowout pipe 10.

Referring to fig. 7, in the present embodiment, the support 30 may be 4 support columns uniformly arranged along the circumference of the blowout preventer 10, and two ends of each support column may be fixed to the inner wall of the expanded pipe 20 and the outer wall of the blowout preventer 10 by welding to fix the blowout preventer 10 and the expanded pipe 20; of course, the support 30 may take the form of any suitable number and configuration of support columns. As shown in fig. 8, the bracket 30 may also adopt a disc-shaped structure with a through hole, an outer ring 301 of the disc bracket may be welded on the inner wall of the expanded pipe 20, and an inner ring 302 of the disc bracket and the outer side of the tail end of the blowout pipe 10 may be in threaded connection, so as to fixedly connect the expanded pipe 20 and the blowout pipe 10. Of course, the inner ring 302 of the disc support can also be directly sleeved outside the tail end of the blowout pipe 10, that is, the pipe expanding pipe and the blowout pipe are of an integral structure, so that when ignition combustion is carried out during blowout, the two materials can generate thermal deformation with the same degree along with the rise of temperature, and the device damage caused by uneven thermal deformation is avoided. The setting mode is not limited, and the setting mode can be set reasonably according to a specific use scene. Here, it should be noted that the support 30 is provided in a form that ensures that a passage 203 for fluid to flow through is formed at the support of the expander 20 and the blowout pipe 10 to provide a passage for air and flame during the blowout process.

Further, the front end face 201 of the expanded pipe 20 and the pipe wall of the blowout pipe 10 can also adopt the structure as shown in fig. 9, in the blowout process, high-speed oil gas is jetted from the tail end of the blowout pipe 10, the high-speed oil gas jetted from the front end of the expanded pipe 20 and the tail end of the blowout pipe 10 are matched to form relative negative pressure, air is sucked into the expanded pipe 20 from the front end of the expanded pipe 20 and mixed with the oil gas jetted from the blowout pipe, and mixed gas is ignited through the ignition mechanism to realize blowout ignition. The size of the gap between the front end surface 201 of the expanded pipe 20 and the pipe wall of the blowout pipe 10 can be determined according to the specific blowout amount to achieve the corresponding blowout ignition effect.

Further, there may be a plurality of through holes 202, and a plurality of through holes 202 are uniformly disposed on the outer circumference of the blow-off pipe 10. For example, in some examples, a circle of through holes 202 may be uniformly disposed on the front end surface 201 along the circumferential direction of the blowout preventer 10, that is, the through holes 202 are uniformly disposed on the front end surface 201, so that the fluid flow channel 203 formed between the expansion pipe 20 and the blowout preventer 10 has corresponding through holes 202 along the circumferential direction of the pipeline, and during the blowout process, a circle of through holes 202 uniformly disposed on the front end surface 201 sucks the external air into the channel 203 between the expansion pipe 20 and the blowout preventer 10, so as to ensure the uniformity of the ignition of the blowout, and also facilitate the sufficient combustion of the oil gas ejected through the blowout preventer 10. It should be understood that, when the pipe diameter of the expanded pipe 20 is larger than that of the blowout pipe 10, two, three or even more turns of the through holes 202 may be uniformly arranged on the front end surface 201 along the circumferential direction of the blowout pipe 10, and by increasing the number of the through holes 202, more air enters into the expanded pipe 20 during the blowout process, which is beneficial to the sufficient combustion of the blown oil gas.

For another example, in other examples, a circle of through holes 202 may be uniformly arranged on the wall of the expanded pipe 20 along the circumferential direction of the blowout pipe 10, and similarly, according to the requirement of the actual blowout amount, a plurality of circles of through holes 202 may also be uniformly arranged on the wall of the expanded pipe 20 along the circumferential direction of the blowout pipe 10. For example, in the present embodiment, the through holes 202 may be arranged in the manner shown in fig. 5, and a circle of through holes 202 are uniformly arranged on the front end surface 201 along the circumferential direction of the blow-off pipe 10, while a circle of through holes 202 are uniformly arranged on the pipe wall of the expanded pipe 20 along the circumferential direction of the blow-off pipe 10; it should be noted here that when the blowout amount is large, the number of turns of the through holes 202 on the front end surface 201 or the pipe wall of the expanded pipe 20 can be increased, that is, at least two turns of the through holes 202 are arranged on the blowout pipe 10 around the blowout pipe 10, so as to ensure that enough air enters the expanded pipe 20 during the blowout process and is sufficiently mixed with the oil gas ejected from the tail end of the blowout pipe 10, so that the combustion of the oil gas is sufficient.

Further, a plurality of ignition mechanisms are arranged in the vicinity of the through hole 202 in the circumferential direction of the expanded pipe 20. Specifically, when the blowout amount is large, the number of the through holes 202 is increased to ensure the flame required for ignition, for example, an ignition basin 50 may be hung below each through hole 202, so as to ensure the required amount of flame near each through hole 202, and achieve a good blowout ignition effect. The ignition basin 50 may be hung on the blowout preventer 10 or the expander 20 through a rope, and the position of the ignition basin 50 may be set according to the specific size of the specific blowout pipeline on the site, which is not particularly limited in this embodiment.

Further, referring to fig. 9, the blowout pipe 10 may further be provided with a blowout valve 101 for controlling on/off of the blowout pipe 10 to start or stop the blowout operation. The blow-off valve 101 may be any valve suitable for controlling the on-off or flow rate of the blow-off pipe 10, and is not limited herein.

As shown in fig. 9, the present embodiment provides a gas production apparatus, including: the lower end of the gas production tree 40 is communicated with a gas well, two gas outlet branches are arranged at the upper end of the gas production tree 40, one gas outlet branch serves as a blowout branch, the other gas outlet branch serves as a gas production branch, a blowout port 401 of the blowout branch on the gas production tree 40 is communicated with a blowout pipe 10 of the blowout device, an ignition mechanism is ignited before blowout operation of the gas well is conducted, after flame in the ignition mechanism burns uniformly, a blowout valve 101 on a blowout pipeline is opened to start blowout operation, and blowout is stopped by closing the blowout valve 101 when blowout is finished.

The gas production equipment that this embodiment provided is owing to adopted foretell blowout device, and gas production equipment is including the gas production tree 40 that is used for exploiting oil gas, opens earlier before the gas production blowout branch road and ignites impurity and toxic gas in the gas well through the blowout device, treats that the impurity in the gas well discharges and opens the gas production branch road after finishing and carry out oil gas exploitation production, so increased gas production purity, improved gas production efficiency, and then promoted gas production quality.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An open flow device, comprising: a blow-off pipe and a pipe expanding;

the expanding pipe is sleeved on the outer side of the tail end of the blow-off pipe and is fixed with the blow-off pipe, and a channel for fluid flowing is formed between the expanding pipe and the blow-off pipe;

the front end of the expanding pipe is provided with at least one through hole, and the through hole is used for being matched with oil gas sprayed out from the tail end of the blow-off pipe so as to form negative pressure in the channel and suck air near the through hole into the channel;

an ignition mechanism is arranged near the through hole and used for igniting the mixed gas of the oil gas and the air.

2. The blowout apparatus according to claim 1, wherein the expanded pipe comprises a pipe wall and a front end surface inclined to the blowout pipe, and the through hole is provided in the front end surface or on the pipe wall.

3. The blowout apparatus according to claim 2, wherein the through-hole is plural, and the plural through-holes are uniformly provided on the outer periphery of the blowout pipe.

4. The blowout apparatus according to claim 3, wherein at least two through holes are provided around the blowout pipe.

5. The blowout apparatus according to claim 2, wherein the front end surface of the expanded pipe and the blowout pipe are threadedly connected.

6. The blowout apparatus according to claim 1, wherein the length of the blowout pipe extending into the expanded pipe is longer than the distance from the through hole to the front end of the expanded pipe.

7. The blowout apparatus according to any one of claims 1 to 6, further comprising a bracket, wherein the bracket is disposed in the expanded pipe, one end of the bracket is fixed to an inner wall of the expanded pipe, and the other end of the bracket is fixed to an outer wall of the blowout pipe.

8. The blowout device according to any one of claims 1 to 6, wherein the ignition mechanism is an ignition basin, and the ignition basin is hung on the expansion pipe.

9. The blowout apparatus according to any one of claims 1 to 6, wherein the ignition mechanism is a pulse igniter including an ignition switch, a high voltage assembly and an ignition needle;

the ignition needle penetrates through the through hole, extends into the expansion pipe and extends towards the tail end of the blowout pipe;

the high-voltage assembly is electrically connected with the ignition needle;

the ignition switch is electrically connected with the high-voltage component and used for controlling the high-voltage component to generate electric arc on the ignition needle so as to ignite the mixed gas of the oil gas and the air.

10. A gas production apparatus, comprising: a gas production tree and the blowout apparatus of any one of claims 1 to 9, the blowout opening of the gas production tree communicating with the blowout pipe of the blowout apparatus.

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