Coiled tubing equipment and injection head
By integrating fire sensors and automatic fire extinguishing devices on the injection head of the continuous oil pipe equipment, the fire problem caused by the failure of the anti-blow box seal in high-pressure well operation is solved, and the effect of automatic fire extinguishing and safety risk reduction is achieved.
Patent Information
- Application Number
- CN202420465225.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-11
AI Technical Summary
In high-pressure well operation, the failure of the anti-blown box seal causes combustible gas or liquid to leak, which may cause fire. The operators cannot detect and extinguish the fire in time, resulting in equipment burning and wellhead out of control.
Design an injection head with integrated fire sensors and fire extinguishing devices, which can automatically turn on the fire extinguishing device when a fire is detected, and automatically extinguish the fire to prevent further development of the fire.
It is realized that when a fire caused by the failure of the blowout box occurs, it can detect and automatically extinguish the fire as soon as possible, avoid the spread of the fire, and reduce economic losses and safety risks.
Smart Images
Figure CN222596010U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of oil well equipment, and in particular to a continuous oil pipe equipment and an injection head. Background Art
[0002] Coiled tubing equipment is a commonly used equipment for oil and gas well exploitation. It can be used more and more in recent years because it can be lowered into the coiled tubing for downhole operations under pressure at the wellhead.
[0003] The injection head is the core component of the coiled tubing equipment. It is usually hoisted above the wellhead by a crane, clamping the coiled tubing to achieve movement in and out of the well. The blowout preventer is installed below the injection head. The blowout preventer seals the outside of the coiled tubing to prevent the leakage of flammable or dangerous gases / liquids in the well. In recent years, more and more high-pressure wells have been developed at home and abroad, and the failure of blowout preventer seals has occurred more and more frequently. Leaked flammable gases or liquids may be ignited by static electricity or when mechanical parts are running, causing equipment to burn, which in turn leads to loss of control of the wellhead and accidents such as blowouts, which seriously endanger the lives of wellsite personnel and the surrounding environment.
[0004] Existing injection heads usually have surveillance cameras installed at the bottom to monitor whether there is any gas or liquid leakage at the location where the continuous oil pipe enters the blowout preventer box. When a leak is found, the operator stops the equipment and seals the wellhead again by closing the blowout preventer and other well control equipment. However, this method can only detect problems under continuous monitoring by personnel, and the gas in the well is generally colorless, and minor leaks cannot be observed through the camera. Since the injection head is suspended in the air above the wellhead by a crane, there is a high-pressure area near the wellhead and operators are not allowed to approach. Once a large amount of flammable gas or liquid accumulates and is ignited, the operator will not be able to extinguish the fire with portable fire-fighting equipment and can only wait for fire rescue, thereby delaying the fire-fighting time and causing greater losses. Utility Model Content
[0005] The present application provides a continuous tubing device and an injection head, which can promptly detect a fire caused by leakage of combustible gas due to failure of a blowout preventer, and can automatically extinguish the fire as soon as the fire occurs, thereby preventing the fire from developing due to the operator's inability to approach the wellhead to extinguish the fire, thereby reducing economic losses.
[0006] In the first aspect, the present application provides an injection head, which is suitable for continuous oil tubing equipment and is used to drive continuous oil tubing in and out of the well. The injection head includes an injection head body, a fire sensor and a fire extinguishing device, and the fire sensor and the fire extinguishing device are arranged on the injection head body; the fire sensor is connected to the fire extinguishing device, and when the fire sensor detects a fire at the wellhead or the injection head body, the fire extinguishing device is turned on and the fire is extinguished.
[0007] In some embodiments, the injector head body comprises:
[0008] External frame;
[0009] An inner frame, arranged on the inner periphery of the outer frame;
[0010] A clamping drive mechanism, provided on the inner frame, for clamping and driving the coiled tubing into or out of the well;
[0011] A gooseneck mechanism, connected to the top of the outer frame and used to guide the coiled tubing to be transported to the clamping drive mechanism;
[0012] The fire extinguishing device is connected to at least one of the outer frame and the inner frame.
[0013] In some embodiments, the fire sensor is disposed on the inner frame and / or the outer frame.
[0014] In some embodiments, the fire sensors are arranged in multiple groups along the bottom periphery of the inner frame.
[0015] In some embodiments, the fire extinguishing device includes a nozzle connecting pipe and a plurality of fire extinguishing nozzles, wherein the nozzle connecting pipe connects all of the fire extinguishing nozzles and transports fire extinguishing agent toward all of the fire extinguishing nozzles.
[0016] In some embodiments, all of the fire extinguishing nozzles are respectively arranged toward the inside, outside and bottom of the inner frame.
[0017] In some embodiments, the fire extinguishing device includes a fire extinguishing tank, the fire extinguishing tank is provided with a control valve, the fire sensor is connected to the control valve, and the fire extinguishing tank is connected to the sprinkler connecting pipe.
[0018] In some embodiments, the fire extinguishing nozzle is flexibly connected to the nozzle connecting pipe, and the fire extinguishing device includes a nozzle driving mechanism for driving the fire extinguishing nozzle to move relative to the nozzle connecting pipe.
[0019] In some embodiments, it also includes a monitoring module and a fire alarm module disposed on the injection head body, and the fire alarm module is connected to the fire sensor.
[0020] In a second aspect, the present application provides a continuous tubing device, using the injection head provided by any of the above items.
[0021] The above-mentioned technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art: the injection head includes an injection head body and a fire sensor and a fire extinguishing device arranged on the injection head body. When the blowout preventer fails during the continuous oil pipe operation and causes leakage at the wellhead to cause a fire, the fire sensor can detect the fire in the first time so as to control the fire extinguishing device to open and extinguish the fire in time, thereby preventing the operator from being unable to approach the wellhead for extinguishing the fire in the first time after the fire occurs, avoiding further development of the fire, and thus minimizing the economic losses. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0024] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0025] Figure 1 A schematic diagram of an injection head provided in an embodiment of the present application;
[0026] Figure 2 for Figure 1 Rear view in;
[0027] Figure 3 for Figure 1 Structural diagram of the fire extinguishing device.
[0028] Description of reference numerals:
[0029] 10-gooseneck mechanism; 20-external frame; 30-inner frame; 40-fire extinguishing device; 41-fire extinguishing tank; 42-nozzle connecting pipe; 43-fire extinguishing nozzle; 50-fire sensor. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0031] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0032] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.
[0033] In order to solve the technical problem in the prior art that the failure of the blowout preventer during the coiled tubing operation causes wellhead leakage and causes fire, and the operating personnel fail to discover it in time and cannot get close to extinguish the fire, the present application provides an injection head that can drive the coiled tubing into the well, and can detect the fire caused by the wellhead leakage in the first time and automatically extinguish the fire, thereby avoiding the further development of the fire and greatly reducing the economic losses caused by the fire.
[0034] Coiled tubing equipment is a commonly used equipment for oil and gas well exploitation. Since it can lower coiled tubing into the wellhead under pressure to carry out downhole operations, it has been increasingly used in recent years. The injection head is the core component of the coiled tubing equipment. It is usually hoisted above the wellhead by a crane and clamps the coiled tubing to achieve movement in and out of the well. The present application does not involve changes to the main structure and working principle of the injection head, but integrates a fire sensor 50 and a fire extinguishing device 40 on the injection head to realize automatic detection of fire and automatic extinguishing after fire is found, so as to avoid further development of the fire and reduce economic losses.
[0035] See also Figures 1 to 3 , an embodiment of the present application provides an injection head, including an injection head body, a fire extinguishing device 40 and a fire sensor 50. The fire sensor 50 is connected to the fire extinguishing device 40, wherein the fire sensor 50 is used to detect the fire condition and control the fire extinguishing device 40 to extinguish the fire after the fire condition is detected. It is worth mentioning that the principle of the fire sensor 50 detecting the fire condition and controlling the fire extinguishing device 40 to extinguish the fire can refer to the prior art. Its detection and fire extinguishing logic is as follows: the fire sensor 50 can be connected to the fire extinguishing device 40 through a controller, and the fire sensor 50 can feed back to the controller after detecting the fire condition, and the controller controls the fire extinguishing device 40 to start to extinguish the fire; or the fire sensor 50 is integrated with a control module, and the control module of the fire sensor 50 is connected to the fire extinguishing device 40; or the fire sensor 50 is connected to the control module of the fire extinguishing device 40, and the control module of the fire extinguishing device 40 controls the fire extinguishing device 40 to start to extinguish the fire after receiving the fire condition signal of the fire sensor 50.
[0036] The improvement of the present application is that the fire sensor 50 and the fire extinguishing device 40 are integrated into the injection head body, so that when the crane drives the injection head body to carry out the continuous tubing operation, the injection head body drives the fire extinguishing device 40 to move to the part of the wellhead where leakage and fire are prone to occur, so as to detect and discover the fire in time. Moreover, the fire extinguishing device 40 can be moved to different wellheads along with the injection head body, so there is no need to set up the fire extinguishing device 40 at each wellhead, which does not interfere with the operation of the wellhead equipment and reduces the equipment cost.
[0037] Among them, the setting of the injection head body can refer to the injection head in the prior art. Generally speaking, the injection head body includes an outer frame 20, an inner frame 30, a clamping drive mechanism and a gooseneck mechanism 10. The outer frame 20 is the supporting structure of the injection head body, which mainly plays a supporting and protective role. The outer frame 20 includes a lifting protection frame, a base and a pedal, and the pedal can be folded. The inner frame 30 is installed on the inner periphery of the outer frame 20 as a load-bearing frame. The clamping drive mechanism is installed in the inner frame 30. The clamping drive mechanism is used to clamp the continuous oil pipe, and at the same time drive the continuous oil pipe to transport into the well to realize the operation of the continuous oil pipe entering the well or drive the continuous oil pipe to transport out of the well to realize the operation of the continuous oil pipe leaving the well. The gooseneck mechanism 10 is installed on the top of the outer frame 20 to guide the continuous oil pipe to move along the gooseneck mechanism 10 toward the clamping drive mechanism. The gooseneck mechanism 10 mainly includes two functions, one is the guidance of the continuous oil pipe, and the other is to reduce the bending radius of the continuous oil pipe, thereby extending the service life of the continuous oil pipe.
[0038] By appropriately adjusting the size and spacing of the inner frame 30 and the outer frame 20, the present application can reserve installation space for the fire extinguishing device 40 between the two, so that the fire extinguishing device 40 can be installed and fixed through the inner frame 30 or the outer frame 20; or the fire extinguishing device 40 can be installed outside the outer frame 20. In addition, the injection head body also includes a tensioning mechanism, a weight mechanism, etc., which will not be elaborated one by one in this application.
[0039] Combined with reference Figures 1 to 3 In a specific embodiment provided in the present application, the fire extinguishing device 40 includes a fire extinguishing tank 41, a fire extinguishing nozzle 43 and a nozzle connecting pipe 42. The nozzle connecting pipe 42 is connected between the fire extinguishing tank 41 and the fire extinguishing nozzle 43 to deliver the fire extinguishing agent to the fire extinguishing nozzle 43. The fire extinguishing tank 41 is installed and fixed on the outer side of the inner frame 30. It can be bolted or welded to the inner frame 30 or the outer frame 20 through a fixed bracket to form a space for accommodating and fixing the fire extinguishing tank 41, and then the fire extinguishing tank 41 is installed in the space to achieve fixation. The fire extinguishing tank 41 can also be fixed by installing fixing parts such as a clamp. The present application does not limit the fixing method of the fire extinguishing tank 41, as long as it can be fixed to the injection head body and moved to the wellhead together with the injection head body. The fire extinguishing tank 41 is provided with a control valve, and the fire sensor 50 is connected to the control valve of the fire extinguishing tank 41. When a fire is detected, the control valve of the fire extinguishing tank 41 is controlled to open and release the fire extinguishing agent. The fire extinguishing agent is transported to each fire extinguishing nozzle 43 along the nozzle connecting pipe 42 and sprayed out through the fire extinguishing nozzle 43 to extinguish the fire.
[0040] The fire sensor 50 may be arranged on the inner frame 30 or the outer frame 20. In particular, the fire sensor 50 may be arranged in one group or in multiple groups. When multiple groups of the fire sensor 50 are arranged, the multiple groups of the fire sensor 50 may be arranged at the bottom periphery of the inner frame 30 and at the bottom of the side surface, so as to perform all-round fire monitoring, detect the fire immediately and control the fire extinguishing device 40 to start and extinguish the fire. In addition, the fire sensor 50 may also be installed at appropriate positions of the inner frame 30 and the outer frame 20, such as the upper part, the middle part or the lower part, as required.
[0041] In this embodiment, the nozzle connection pipe 42 can be set as a concave curved structure, extending at least to the bottom and both sides of the inner frame 30, and the fire sensor 50 can be set at the lower position on both sides of the inner frame 30. Multiple groups of fire extinguishing nozzles 43 are correspondingly set, and the multiple groups of fire extinguishing nozzles 43 can be evenly arranged along the extension direction of the nozzle connection pipe 42, and the fire extinguishing nozzles 43 are respectively arranged toward the inside, outside and bottom of the inner frame 30, so that the fire extinguishing device 40 can not only spray the fire extinguishing agent toward the bottom of the injection head body, that is, the wellhead, but also spray the fire extinguishing agent toward the outside of the inner frame 30, the clamping drive mechanism inside the inner frame 30, etc., effectively preventing the injection head body from being damaged in the fire and causing the fire to develop further.
[0042] In some other embodiments, only the nozzle connecting pipe 42 and the fire extinguishing nozzle 43 may be fixed on the injection head body. The nozzle connecting pipe 42 extends to a position away from the wellhead and is connected to a fire extinguishing tank 41 or other device that can store and output the fire extinguishing agent. That is, by separating the fire extinguishing tank 41 or other device that can store and output the fire extinguishing agent from the injection head body, the installation space of the injection head body can be saved and the load of the crane can be reduced at the same time.
[0043] In a preferred embodiment provided in the present application, the fire extinguishing nozzle 43 adopts a flexible connection structure relative to the nozzle connecting pipe 42. The so-called flexible connection specifically means that the fire extinguishing nozzle 43 can swing or rotate to a certain extent in the axial or circumferential direction relative to the nozzle connecting pipe 42. The fire extinguishing device 40 also includes a nozzle driving mechanism, which is used to drive the fire extinguishing nozzle 43 to move relative to the nozzle connecting pipe 42, thereby adjusting the spraying direction of the fire extinguishing agent and improving the fire extinguishing effect. The flexible connection structure between the fire extinguishing nozzle 43 and the nozzle connecting pipe 42 and the structure of the nozzle driving mechanism driving the fire extinguishing nozzle 43 to move can refer to the prior art, and this application will not elaborate on it.
[0044] Furthermore, the injection head provided in the embodiment of the present application also includes a monitoring module and a fire alarm module, and both the monitoring module and the fire alarm module can be installed on the injection head body, or installed in other suitable locations. Among them, the monitoring module is connected to the control room, which is convenient for the operator to remotely monitor the leakage and fire conditions at the wellhead during the process of the continuous oil pipe entering or leaving the well. When the operator finds a leak but does not cause a fire, the injection head body is controlled to stop working to avoid causing a fire; when the operator finds a fire, the fire extinguishing device 40 can also be remotely controlled to extinguish the fire. The fire alarm module is connected to the fire sensor 50. After the fire sensor 50 detects the fire signal, it is fed back to the fire alarm module. The fire alarm module sends an alarm signal and promptly transmits the fire information to the monitoring room and the fire alarm center.
[0045] The embodiment of the present application further provides a coiled tubing device, which uses the injection head provided in the above embodiment, and other parts of the coiled tubing device can refer to the prior art.
[0046] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0047] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0048] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. An injection head, suitable for coiled tubing equipment, used to drive the coiled tubing into the well, characterized in that: The invention comprises an injection head body, a fire sensor and a fire extinguishing device, wherein the fire sensor and the fire extinguishing device are arranged on the injection head body; the fire sensor is connected to the fire extinguishing device, and the injection head body comprises: External frame; An inner frame, arranged on the inner periphery of the outer frame; A clamping drive mechanism, provided on the inner frame, for clamping and driving the coiled tubing into or out of the well; A gooseneck mechanism, connected to the top of the outer frame and used to guide the coiled tubing to be transported to the clamping drive mechanism; The fire extinguishing device is connected to at least one of the outer frame and the inner frame.
2. The injection head according to claim 1, characterized in that: The fire sensor is arranged on the inner frame and / or the outer frame.
3. The injection head according to claim 1, characterized in that: The fire sensors are arranged in multiple groups along the bottom periphery of the inner frame.
4. The injection head according to any one of claims 1 to 3, characterized in that: The fire extinguishing device comprises a nozzle connecting pipe and a plurality of fire extinguishing nozzles. The nozzle connecting pipe connects all the fire extinguishing nozzles and transports fire extinguishing agent toward all the fire extinguishing nozzles.
5. The injection head according to claim 4, characterized in that: All the fire extinguishing nozzles are respectively arranged toward the inside, outside and bottom of the inner frame.
6. The injection head according to claim 4, characterized in that: The fire extinguishing device comprises a fire extinguishing tank, the fire extinguishing tank is provided with a control valve, the fire sensor is connected to the control valve, and the fire extinguishing tank is connected to the sprinkler connecting pipe.
7. The injection head according to claim 4, characterized in that: The fire extinguishing nozzle is flexibly connected to the nozzle connecting pipe, and the fire extinguishing device includes a nozzle driving mechanism for driving the fire extinguishing nozzle to move relative to the nozzle connecting pipe.
8. The injection head according to claim 1, characterized in that: It also includes a monitoring module and a fire alarm module which are arranged on the injection head body, and the fire alarm module is connected to the fire sensor.
9. A coiled tubing device, characterized in that: The injection head according to any one of claims 1 to 8 is used.