Ignition control assembly for oil and gas wells

Abstract

The utility model is applicable to the technical field of oil and gas well perforation, and provides an ignition control assembly for oil and gas wells, including an upper straight-through conductive unit, a shell, a control chip and a lower straight-through conductive unit; the upper straight-through conductive unit and the lower straight-through conductive unit are limitedly connected in the shell; the control chip is connected to the upper straight-through conductive unit and the lower straight-through conductive unit; the shell includes half shell one and half shell two, the half shell one is provided with a buckle, the half shell two is fixed with a bayonet, the half shell two and the half shell one are buckled with the bayonet and the buckle and fixed by screws; the control chip is fixed in the half shell one. The overall structure of the utility model is assembled into an integrated product, which greatly improves the aesthetics of the product. The product improves the efficiency of on-site assembly, and has the effects of stable contact, reliable connection, efficient assembly, and simplicity and practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas well perforation, and in particular relates to an ignition control component for oil and gas wells. Background Art

[0002] At present, shale oil and shale gas development at home and abroad all adopt graded perforation and segmented fracturing technology, which not only sends the gun string to the target layer, determines the perforation position and gun string position through magnetic positioning, and then controls the ignition of the corresponding gun string separately through special chips. After the ignition of each target layer is completed, the gun string is pulled out and fracturing is carried out, and the operation is repeated in sequence.

[0003] In the current staged perforating operation, the pressure switch process, the selective firing module control process and the hydraulic silt sand perforating can all realize the staged construction. Each construction technology has its own advantages and disadvantages. For China, more than 80% of the staged perforating currently adopts the selective firing module construction process, which is mainly due to its advantages such as high reliability and high safety. When using the selective firing module construction process, a specific control chip 4 is required to control the igniter to realize the bridge plug setting. The existing technology either connects the selective firing module to the end of the previous gun to realize the igniter control firing, or directly connects it to the metal bracket and then assembles it on the joint. The above two methods have various problems in the process of use, resulting in a large number of reworks on site, which seriously affects the on-site construction. For this reason, an ignition control assembly for oil and gas wells is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an ignition control assembly for oil and gas wells, aiming to solve the problems raised in the above background technology.

[0005] The utility model embodiment is implemented as follows: an ignition control assembly for oil and gas wells, comprising an upper straight-through conductive unit, a housing, a control chip and a lower straight-through conductive unit;

[0006] The upper straight-through conductive unit and the lower straight-through conductive unit are connected in a limiting manner in the housing;

[0007] The control chip is connected to the upper through-type conductive unit and the lower through-type conductive unit;

[0008] The shell includes half shell one and half shell two, half shell one is provided with a buckle, half shell two is fixed with a bayonet, half shell two and half shell one are fastened with the bayonet and the buckle and fixed with screws; the shell composed of half shell one and half shell two limits and connects the upper straight-through conductive unit and the lower straight-through conductive unit; the control chip is fixed in half shell one.

[0009] Furthermore, the upper straight-through conductive unit includes a support seat, an insulating pressure cap, an insulating tube, a contact rod, a spring and a retaining spring; the support seat is provided with a thread, and an insulating tube is provided inside the support seat; the insulating pressure cap is provided with a thread that matches the thread of the support seat; a contact rod and a spring are provided inside the insulating tube, and a milled hole is provided inside the insulating tube, and the contact rod is slidably connected to the milled hole; one end of the spring is connected to the contact rod, and the other end of the spring is connected to the support seat; the retaining spring limits the insulating pressure cap.

[0010] Furthermore, the lower straight-through conductive unit includes a support seat 2, a contact rod 2, a spring 2 and a retaining spring 2; the support seat 2 is provided with a contact rod 2 and a spring 2, the support seat 2 is provided with a milled hole, and the contact rod 2 is slidably connected to the milled hole; one end of the spring 2 is connected to the contact rod 2, and the other end of the spring 2 is connected to the support seat 2; the retaining spring 2 limits the contact rod 2.

[0011] Furthermore, the support seat 1 and the support seat 2 are both made of stainless steel, and the contact rod 1 and the contact rod 2 are both made of lead brass.

[0012] Furthermore, the half shell one and the half shell two are both made of insulating material.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The ignition control assembly for oil and gas wells can realize signal transmission by arranging contact rods 1 and 2 inside the upper and lower straight-through conductive units, and both are designed with anti-rotation structures to prevent the contact rods from rotating and driving the wires to rotate during assembly, thereby improving product reliability; the springs inside the upper and lower straight-through conductive units do not participate in the conduction, thereby improving the reliability of signal transmission; a limiting structure for the control chip is designed inside the half shell 1 to limit the control chip and prevent the control chip from being damaged during the vibration of the gun string, thereby causing product failure; the half shell 1 and the half shell 2 are fixed by screws to improve their reliability; a bayonet structure is designed between the half shell 1 and the half shell 2 to ensure the stability of the connection; the overall structure is assembled as an integrated product, greatly improving the aesthetics of the product. This product improves the efficiency of on-site assembly, and has the effects of stable contact, reliable connection, efficient assembly, and simplicity and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an ignition control assembly for oil and gas wells.

[0016] Figure 2 The schematic diagram of the top view of the structure of half shell one of the ignition control assembly for oil and gas wells is shown in FIG.

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of half shell one of an ignition control assembly for oil and gas wells.

[0018] Figure 4 The schematic diagram of the top view of the structure of half shell 2 in the ignition control assembly for oil and gas wells is shown in FIG.

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of half shell two in an ignition control assembly for oil and gas wells.

[0020] Figure 6 This is a schematic diagram of the structure of an upper straight-through conductive unit in an ignition control assembly for oil and gas wells.

[0021] Figure 7 It is a schematic diagram of the structure of a support seat 1 in an ignition control assembly for oil and gas wells; wherein (a) is a cross-sectional view of the support seat 1, and (b) is a side view of the support seat 1.

[0022] Figure 8 The diagram is a structural diagram of a lower straight-through conductive unit in an ignition control assembly for oil and gas wells.

[0023] Fig. 9 It is a schematic diagram of the structure of the support seat 2 in the ignition control assembly for oil and gas wells; (a) is a cross-sectional view of the support seat 2, and (b) is a side view of the support seat 2.

[0024] In the figure: 1-upper straight-through conductive unit, 11-support seat 1, 12-insulating pressure cap, 13-insulating tube, 14-contact rod 1, 15-spring 1, 16-circlip 1, 2-half shell 1, 3-half shell 2, 4-control chip, 5-lower straight-through conductive unit, 51-support seat 2, 52-contact rod 2, 53-spring 2, 54-circlip 2. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] like Figure 1-5 As shown, an ignition control assembly for oil and gas wells provided by an embodiment of the utility model includes an upper straight-through conductive unit 1, a shell, a control chip 4 and a lower straight-through conductive unit 5;

[0028] The control chip 4 is connected to the upper straight-through conductive unit 1 and the lower straight-through conductive unit 5, so as to control the igniter to ignite;

[0029] The shell includes a half shell 1 2 and a half shell 2 3, a bayonet structure is arranged between the half shell 1 2 and the half shell 2 3, the bayonet structure includes a bayonet and a buckle, the half shell 1 2 is provided with a buckle, the half shell 2 3 is fixed with a bayonet, the half shell 2 3 and the half shell 1 2 are fastened together through the bayonet and the buckle, and screw holes are provided on the half shell 1 2 and the half shell 2 3, which are connected and fixed by screws; the shell composed of the half shell 1 2 and the half shell 2 3 limits and connects the upper straight-through conductive unit 1 and the lower straight-through conductive unit 5; the control chip 4 is fixed in the half shell 1 2.

[0030] In the embodiment of the utility model, the connection between the upper straight-through conductive unit 1 and the lower straight-through conductive unit 5 is achieved through half shell 1 2 and half shell 2 3; the adaptable design can be carried out according to the use structure, and is suitable for the joints with outer diameters of 73mm, 89mm and 102mm of the gun string.

[0031] like Figure 1-7 As shown, as a preferred embodiment of the utility model, the upper straight-through conductive unit 1 includes a support seat 11, an insulating cap 12, an insulating tube 13, a contact rod 14, a spring 15 and a retaining spring 16; the support seat 11 is designed with an M50×3 thread, and an insulating tube 13 is arranged inside the support seat 11 for insulation; the insulating cap 12 is provided with a thread, which is adapted to the thread of the support seat 11 to limit the insulating tube 13 and the contact rod 14; the insulating tube 13 has a contact rod 14 and a spring 15 built in, the contact rod 14 is slidably connected to the insulating tube 13, the contact rod 14 can realize signal transmission, can be flexibly compressed and cannot rotate; the spring 15 does not participate in conduction, one end of the spring 15 is connected to the contact rod 14, and the other end of the spring 14 is connected to the support seat 11; the retaining spring 16 limits the insulating cap 12.

[0032] In the embodiment of the utility model, the outer end face of the support seat 11 is a hexagonal structure, and a special hexagonal tool can be designed for assembling the overall product; the support seat 11 is provided with an annular groove for limiting the half shell 2 and the half shell 3; the support seat 11 is made of stainless steel, which meets the requirements of strength and aesthetics; the insulating pressure cap 12 and the insulating tube 13 are made of PEEK material, which has better insulation performance; the insulating tube 13 is provided with a milled hole inside to adapt to the contact rod 14 to prevent the contact rod 14 from rotating due to assembly; the contact rod 14 is made of lead brass material, which has better conductivity.

[0033] like Figure 1-3As shown, as a preferred embodiment of the utility model, the half shell 2 is made of insulating material, and is internally designed with 6 inner plates with claws for limiting the control chip 4; the interior is designed with a protruding ring groove that can be matched and connected with the external ring groove of the support seat 11 of the upper straight-through conductive unit 1, and is designed with a protruding positioning key to achieve positioning and prevent the half shell 2 from rotating; the internal lower end is designed with a limiting step that is connected and limited with the lower straight-through conductive unit 5, and is designed with a protruding positioning key to prevent the lower straight-through conductive unit 5 from rotating.

[0034] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the half shell 2 3 is made of insulating material, and is designed with a protruding ring groove inside to be connected to the upper straight-through conductive unit 1, and is designed with a protruding positioning key to achieve positioning to prevent the half shell 2 3 from rotating; a limiting step is designed at the lower end of the interior to be connected and limited to the lower straight-through conductive unit 5, and is designed with a protruding positioning key to prevent the lower straight-through conductive unit 5 from rotating.

[0035] like Figure 1 As shown, as a preferred embodiment of the present utility model, the control chip 4 has a built-in specific code to realize host computer control.

[0036] like Figure 1-9 As shown, as a preferred embodiment of the utility model, the lower straight-through conductive unit 5 includes a support seat 2 51, a contact rod 2 52, a spring 2 53 and a retaining spring 2 54; the support seat 2 51 is designed with a limiting groove; the support seat 2 51 is provided with a contact rod 2 52 and a spring 2 53, and the support seat 2 51 is provided with a milled hole inside, and the contact rod 2 52 is slidably connected with the milled hole 51 to prevent the contact rod 2 52 from rotating, and the contact rod 2 52 can realize signal transmission, can be flexibly compressed and cannot rotate; the spring 2 53 does not participate in the conduction One end of the spring 53 is connected to the contact rod 52, and the other end of the spring 53 is connected to the support seat 51; the support seat 51 is made of stainless steel; a keyway is designed on the outside of the support seat 51, which cooperates with the protruding key of the half shell 3 to prevent rotation; a protruding limiting step is designed on the outside of the support seat 51, which can cooperate with the ring groove of the half shell 3 to limit the position; a retaining ring groove is designed inside the support seat 51, which can limit the retaining ring 54, and the retaining ring 54 limits the contact rod 52; the contact rod 52 is made of lead brass.

[0037] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An ignition control assembly for oil and gas wells, characterized in that: It includes an upper straight-through conductive unit, a housing, a control chip and a lower straight-through conductive unit; The upper straight-through conductive unit and the lower straight-through conductive unit are connected in a limiting manner in the housing; The control chip is connected to the upper through-type conductive unit and the lower through-type conductive unit; The shell comprises half shell one and half shell two, half shell one is provided with a buckle, half shell two is fixed with a bayonet, half shell two and half shell one are fastened together through the bayonet and the buckle and fixed by screws; the control chip is fixed in half shell one.

2. The ignition control assembly for oil and gas wells according to claim 1, characterized in that: The upper straight-through conductive unit includes a support seat, an insulating pressure cap, an insulating tube, a contact rod, a spring and a retaining spring; the support seat is provided with a thread, and an insulating tube is provided in the support seat; the insulating pressure cap is provided with a thread that matches the thread of the support seat; a contact rod and a spring are provided in the insulating tube, and a milled hole is provided in the insulating tube, and the contact rod is slidably connected to the milled hole; one end of the spring is connected to the contact rod, and the other end of the spring is connected to the support seat; the retaining spring limits the insulating pressure cap.

3. The ignition control assembly for oil and gas wells according to claim 2, characterized in that: The lower straight-through conductive unit includes a support seat 2, a contact rod 2, a spring 2 and a retaining spring 2; the support seat 2 is provided with a contact rod 2 and a spring 2, the support seat 2 is provided with a milled hole, and the contact rod 2 is slidably connected to the milled hole; one end of the spring 2 is connected to the contact rod 2, and the other end of the spring 2 is connected to the support seat 2; the retaining spring 2 limits the contact rod 2.

4. The ignition control assembly for oil and gas wells according to claim 3, characterized in that: The support seat 1 and the support seat 2 are both made of stainless steel, and the contact rod 1 and the contact rod 2 are both made of lead brass.

5. The ignition control assembly for oil and gas wells according to claim 1, characterized in that: The first half shell and the second half shell are both made of insulating material.

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