Air drilling downhole logging sample gas purification device and purification method

Abstract

The invention discloses an air drilling downhole logging sample gas purification device and method, the device comprises a main body, the main body is internally provided with a purification cavity, the purification cavity comprises a first purification cavity and a second purification cavity, the first purification cavity and the second purification cavity are communicated, and the first purification cavity and the second purification cavity are internally provided with a first purification assembly and a second purification assembly respectively; wherein after the logging sample gas enters the first purification cavity, the first purification assembly enables the logging sample gas to form a local vortex in the first purification cavity and performs primary purification on impurities in the logging sample gas, and the second purification assembly performs secondary purification on the logging sample gas subjected to primary purification in a hammering mode. According to the device, logging sample gas is purified in multiple modes, and the purification effect is ensured while the purification purity of the logging sample gas is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mud logging sample gas purification, and in particular relates to a mud logging sample gas purification device and a purification method for air drilling. Background Art

[0002] Mud logging is an important part of drilling engineering. With the rapid improvement of air drilling technology, gas drilling has become an important means of energy conservation and efficiency improvement in the oil industry. Since gas is used as a fluid in the air drilling process, the previously commonly used drilling fluid logging method is no longer suitable.

[0003] At present, the vast majority of logging sample gas purification is carried out using filter cartridges. The process flow is roughly as follows: dust enters the dust collector through a strong negative pressure generated by an induced draft fan. Most of the dust-containing gas is directly separated into the ash hopper under the action of gravity inertia, and the remaining dust is blocked by the filter cartridge and deposited on the surface of the filter cartridge. The filtered clean gas is sent to the logging gas detection mechanism by the induced draft fan for component detection. The dust blocked by the filter cartridge and accumulated on the surface of the filter cartridge is back-blown by compressed air at a fixed time controlled by a set pulse solenoid valve to blow off the dust on the outer surface of the filter cartridge, so as to facilitate subsequent filtration work.

[0004] The sample gas purification methods used above, due to the use of backblowing or induced draft, artificially add foreign gas, resulting in dilution and reduction of sample gas concentration or purity, affecting the detection quality (not cleanly filtered); and air compressors, induced draft fans, etc. cause a large number of on-site equipment and a large size, and the logging operation requires repeated site movement, which increases labor costs and labor intensity, increases on-site unsafe factors, and has low detection efficiency.

[0005] In order to solve the above technical problems, the prior art publication number CN116059751A discloses a logging sample gas purification device and method, which uses a vibrating brush to reciprocate up and down in a filter cartridge to remove dust from the outer and inner walls of the filter cartridge, thereby purifying the logging sample gas without introducing foreign gas. However, although this technical solution solves the problem of dust accumulation on the surface of the filter cartridge, it also causes the filter pore diameter of the filter cartridge to change. While removing dust, dust will also be collected along with the logging sample gas, affecting the purification effect. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to provide an air drilling logging sample gas purification device and a purification method.

[0007] According to a first aspect of the present invention, there is provided an air drilling logging sample gas purification device, comprising: a main body, having a purification chamber inside, the purification chamber comprising a first purification chamber and a second purification chamber, the first purification chamber and the second purification chamber are connected, and a first purification component and a second purification component are respectively arranged inside;

[0008] Among them, after the logging sample gas enters the first purification chamber, the first purification component causes the logging sample gas to form a local vortex in the first purification chamber and performs primary purification of impurities in the logging sample gas, and the second purification component uses a hammering method to perform secondary purification on the logging sample gas after the primary purification.

[0009] Furthermore, the first purification chamber and the second purification chamber are connected via a first purification component, which includes a partition having a flow hole formed thereon, wherein an inlet size of the flow hole near the first purification chamber is smaller than an outlet size of the flow hole near the second purification chamber.

[0010] Furthermore, the first purification component also includes an air inlet pipe and a first dust box, which are respectively arranged at two ends of the first purification chamber, a filter is installed in the air inlet pipe, and a rotating handle is installed on the side of the filter.

[0011] Further, the second purification assembly includes a driving member, which is installed on the top of the second purification chamber, and the driving end of the driving member extends into the second purification chamber and is provided with a screw rod, and the outer side of the screw rod is transmission-connected with a hammer member;

[0012] A filter is provided at one end of the second purification chamber away from the hammer, and the hammer and the filter cooperate to perform secondary purification of the logging sample gas.

[0013] Further, the hammering member includes a hammering box, the hammering box is threadedly connected to the screw rod, and a driving block is rotatably connected inside the hammering box;

[0014] A push plate is provided on one side of the driving block, a push rod is fixedly connected to the push plate, an elastic piece is sleeved on the push rod between the push plate and the hammer box, a rubber ball is fixedly connected to the end of the push rod, and the rubber ball cooperates with the filter.

[0015] Furthermore, one end of the filter element close to the hammer element is tilted.

[0016] Furthermore, an air outlet pipe is provided at one end of the filter element away from the hammer element.

[0017] Furthermore, the filter element is a filter cartridge.

[0018] Furthermore, a second dust box is provided in the second purification chamber.

[0019] According to a second aspect of the present invention, there is provided a purification method, which is carried out using the purification device as described above, comprising:

[0020] Introduce the logging sample gas into the purification device;

[0021] The introduced logging sample gas is caused to generate vortex and is initially purified;

[0022] The logging sample gas after the vortex is generated is purified for the second time.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The first purification chamber and the second purification chamber are connected through the flow hole on the partition. When the logging sample gas enters the first purification chamber, due to the design of the flow hole size, the logging sample gas in the first purification chamber will be temporarily retained, and a local vortex will be formed under the push of the subsequent air intake, forcing some impurities in the logging sample gas to be retained in the first dust box, thereby initially purifying the logging sample gas; after the initial purification, the logging sample gas enters the second purification chamber through the flow hole, and is secondarily purified through the coordinated operation of the hammer and the filter. No foreign gas is introduced during the entire purification process, and the structure of the filter is not changed, thereby ensuring the reliability and purity of the logging sample gas purification.

[0025] 2. The hammer and filter work together. On the one hand, they can remove dust on the filter in real time to ensure the filtering effect of the filter. On the other hand, they can reduce the operating pressure of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A cross-sectional view of the overall structure of the air drilling logging sample gas purification device provided by the present invention;

[0028] Figure 2 A schematic diagram of the structure of a hammer component in the air drilling logging sample gas purification device provided by the present invention;

[0029] Figure 3 A schematic diagram of the operation of a driving block in the air drilling logging sample gas purification device provided by the present invention;

[0030] Figure 4 Schematic diagram of filter installation in the air drilling logging sample gas purification device provided by the present invention:

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the air drilling logging sample gas purification device provided by the present invention.

[0032] Among them: 1. Main body; 2. Support legs; 3. Air cylinder; 4. Air inlet pipe; 5. Filter screen; 6. Rotating handle; 7. First dust box; 8. Flow hole; 9. Screw rod; 10. Motor; 11. Hammer box; 12. Drive block; 13. Push plate; 14. Push rod; 15. Rubber ball; 16. Spring; 17. Second dust box; 18. Filter cartridge; 19. Air outlet pipe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0040] The embodiment of the present invention provides a device and method for purifying a logging sample gas in an air drilling well. According to the first aspect of the present invention, a device is provided for purifying a logging sample gas in an air drilling well, comprising a main body 1, wherein the main body 1 has a purification chamber inside, wherein the purification chamber comprises a first purification chamber and a second purification chamber, wherein the first purification chamber and the second purification chamber are connected, and wherein a first purification component and a second purification component are respectively arranged inside; wherein, after the logging sample gas enters the first purification chamber, the first purification component causes the logging sample gas to form a local vortex in the first purification chamber and performs a primary purification on the impurities in the logging sample gas, and the second purification component performs a secondary purification on the logging sample gas after the primary purification by a hammering method. Without introducing foreign gas as an auxiliary purification, the retest purification is adopted, which improves the reliability of the logging sample gas purification to a certain extent and ensures the purification quality.

[0041] Furthermore, the first purification chamber and the second purification chamber are connected via a first purification component, such as Figure 1 As shown, the first purification chamber is a gas cylinder 3, the cross section of the gas cylinder 3 is L-shaped, the first purification component includes a partition, a flow hole 8 is opened on the partition, the inlet size of the flow hole 8 close to the first purification chamber is smaller than the outlet size of the flow hole 8 close to the second purification chamber, after the logging sample gas enters the first purification chamber, since the inlet size of the flow hole 8 close to the first purification chamber is smaller; therefore, in the process of the logging sample gas flowing through the flow hole 8 to the second purification chamber, the logging sample gas will be affected by the resistance and will be temporarily retained at the flow hole 8 in the first purification chamber. During the process, driven by the subsequent intake air entering the first purification chamber, a local vortex will be formed in the first purification chamber, forcing some impurities or dust to be retained; the first purification component also includes an intake pipe 4 and a first dust box 7, which are respectively arranged at the two ends of the first purification chamber, and the first dust box 7 is located below the flow hole 8. The retained impurities or dust just fall into the first dust box 7 and are collected. A filter screen 5 is installed in the intake pipe 4, and a rotating handle 6 is installed on the side of the filter screen 5. The filter screen 5 can isolate some particles with larger diameters from the first purification chamber, such as Figure 4As shown, the setting of the rotating handle 6 can realize regular replacement of the filter 5.

[0042] In this embodiment, the second purification component includes a driving member, which is installed on the top of the second purification chamber. The driving end of the driving member extends into the second purification chamber and is provided with a screw 9. The outer side of the screw 9 is connected to a hammer member. A filter is provided at one end of the second purification chamber away from the hammer member. The hammer member and the filter cooperate to purify the logging sample gas for the second time. Specifically, the logging sample gas after the initial purification enters the second purification chamber through the flow hole 8. The filter member is used to filter the logging sample gas in the second purification chamber. During the filtering process, in order to ensure the filtering effect, a driving member is installed on the top of the second purification chamber. The driving end of the driving member extends into the second purification chamber and is fixedly connected to the screw 9. The hammer member is screwed on the outer side of the screw 9. The driving force of the driving member drives the hammer member to hammer and remove impurities or dust on the filter member, and realizes the secondary purification of the logging sample gas.

[0043] Furthermore, the hammering member includes a hammering box 11, which is screwed to the screw rod 9, and a driving block 12 is rotatably connected in the hammering box 11; a push plate 13 is provided on one side of the driving block 12, and a push rod 14 is fixedly connected to the push plate 13. The push rod 14 is located between the push plate 13 and the hammering box 11 and is partially sleeved with an elastic member, and a rubber ball 15 is fixedly connected to the end of the push rod 14, and the rubber ball 15 cooperates with the filter. Specifically, before the hammering operation is performed, the driving block 12 is rotatably connected in the hammering box 11, such as Figure 2 and Figure 3 As shown, the driving block 12 adopts a diamond structure design, and the elastic member is preferably a spring 16. The long and short axes of the driving block 12 push the push plate 13 and cooperate with the spring 16 to realize the rubber ball 15 hammering the filter element. In this embodiment, the driving member and the filter element preferably adopt a motor 10 and a filter cartridge 18.

[0044] In this embodiment, the filter element is inclined at one end close to the hammer element, an air outlet pipe 19 is provided at the end of the filter element away from the hammer element, the filter element is a filter cartridge 18, and a second dust box 17 is also provided in the second purification chamber below the filter element; specifically, the inclined setting can enable the impurities and dust on the filter element to fall smoothly into the second dust box 17 during the process of the filter element being struck by the hammer element, and finally the first dust box 7 and the second dust box 17 can be manually taken out to clean up the impurities and dust.

[0045] In this embodiment, two legs 2 are symmetrically provided at the bottom of the main body 1 , and the two legs 2 are used to support and stabilize the main body 1 .

[0046] According to a second aspect of the present invention, there is provided a purification method, wherein the purification is performed using the purification device as described above, comprising:

[0047] Step 1: Introduce the logging sample gas into the purification device; introduce the logging sample gas to be processed into the air inlet pipe 4, and the logging sample gas enters the first purification chamber after being filtered by the filter 5, and forms a local vortex at the bottom of the first purification chamber, in which some impurities are forced to remain in the first dust box 7.

[0048] Step 2: The logging sample gas enters the second purification chamber through the flow hole 8 and passes through the filter cartridge 18 and is discharged from the gas outlet pipe 19 . During the discharge process, impurities adhere to the filter cartridge 18 .

[0049] Step 3: Start the motor 10 to drive the screw rod 9 to drive the driving block 12 to move the rubber ball 15 up and down to continuously hammer the filter cylinder 18, and the impurities on the filter cylinder 18 fall into the second dust box 17.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air drilling logging sample gas purification device, characterized in that: It comprises a main body (1) having a purification chamber inside, the purification chamber comprising a first purification chamber and a second purification chamber, the first purification chamber and the second purification chamber are connected, and a first purification component and a second purification component are respectively arranged inside the first purification chamber and the second purification component; Among them, after the logging sample gas enters the first purification chamber, the first purification component causes the logging sample gas to form a local vortex in the first purification chamber and performs primary purification of impurities in the logging sample gas, and the second purification component uses a hammering method to perform secondary purification on the logging sample gas after the primary purification.

2. The purification device according to claim 1, characterized in that: The first purification chamber and the second purification chamber are connected via a first purification component, the first purification component comprising a partition, a flow hole (8) is provided on the partition, and the inlet size of the flow hole (8) close to the first purification chamber is smaller than the outlet size of the flow hole (8) close to the second purification chamber.

3. The purification device according to claim 1 or 2, characterized in that: The first purification component further comprises an air intake pipe (4) and a first dust box (7), wherein the air intake pipe (4) and the first dust box (7) are respectively arranged at two ends of the first purification chamber, a filter screen (5) is installed in the air intake pipe (4), and a rotating handle (6) is installed on the side of the filter screen (5).

4. The purification device according to claim 1, characterized in that: The second purification component comprises a driving member, the driving member is installed on the top of the second purification chamber, the driving end of the driving member extends into the second purification chamber and is provided with a screw rod (9), and the outer side of the screw rod (9) is transmission-connected with a hammer member; A filter is provided at one end of the second purification chamber away from the hammer, and the hammer and the filter cooperate to perform secondary purification of the logging sample gas.

5. The purification device according to claim 4, characterized in that: The hammering member comprises a hammering box (11), the hammering box (11) is threadedly connected to the screw rod (9), and a driving block (12) is rotatably connected inside the hammering box (11); A push plate (13) is provided on one side of the driving block (12), a push rod (14) is fixedly connected to the push plate (13), an elastic member is partially sleeved on the push rod (14) located between the push plate (13) and the hammer box (11), a rubber ball (15) is fixedly connected to the end of the push rod (14), and the rubber ball (15) cooperates with the filter element.

6. The purification device according to claim 4 or 5, characterized in that: The filter element is arranged obliquely at one end close to the hammer element.

7. The purification device according to claim 6, characterized in that: An air outlet pipe (19) is provided at one end of the filter element away from the hammer element.

8. The purification device according to claim 7, characterized in that: The filter element is a filter cartridge (18).

9. The purification device according to claim 1, characterized in that: A second dust box (17) is also provided in the second purification chamber.

10. A purification method, characterized in that: The method is carried out using the purification device according to any one of claims 1 to 9, comprising: Introduce the logging sample gas into the purification device; The introduced logging sample gas is caused to generate vortex and is initially purified; The logging sample gas after the vortex is generated is purified for the second time.

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