CN206299377U - A kind of integrated bionical integral type pellicle degasser - Google Patents

Abstract

An integrated bionic integrated semi-permeable membrane degasser belongs to the technical field of oil and gas exploration. In the utility model, the inner wall of the gas-gathering section is provided with a pit-like bionic microstructure, and the rear edge of the maximum diameter of the gas-gathering section is evenly distributed with 6 carrier gas The inlet; the inner ring at the end of the gas transmission section is provided with an annular groove, and the inner wall in front of the annular groove in the gas transmission section is provided with a ring-shaped bionic microstructure; the degassing layer composed of a semi-permeable membrane and a support net is fixed at the front end of the gas gathering section; The cross-section of the bionic rectifier is radial, and it is composed of 6 units and a central cylinder. The long plates of the 6 units are correspondingly embedded in the transverse grooves of the gas collection section; the front end of the gas delivery section is screwed to the rear end of the gas collection section The rear end of the gas transmission section is threadedly connected to the inlet of the exhaust nozzle; the three sensors are evenly distributed in the annular groove of the gas transmission section; the utility model can be used for the detection and identification of gas layers in the exploration and development of oil and gas fields, and can significantly improve the The precision and accuracy of mud logging can also realize the integration of degassing, gas transmission and detection of well logging work, reduce the size of the device and reduce the cost.

Description

An integrated bionic integrated semi-permeable membrane degasser

technical field

The utility model belongs to the technical field of oil and gas exploration, in particular to an integrated bionic integrated semi-permeable membrane degasser.

Background technique

At present, the degassing work in the mud logging process mainly relies on pneumatic or electric degassers to separate oil and gas. Semi-permeable membrane degassing methods are still rare, especially for the structural design of semi-permeable membrane degassing devices. Compared with traditional electric or pneumatic degassers, this degassing method has the advantages of less influencing factors and quantitative evaluation of oil and gas content.

The existing semi-permeable membrane-based oil-gas separation device has fewer designs to change the flow field by changing the internal structure, and the gas transmission efficiency is low. The precision and accuracy of detection cannot give full play to the advantages of semi-permeable membrane degassing.

In the well logging work, the two processes of degassing and detection are usually completed in different devices, which is cumbersome and expensive.

Contents of the invention

The purpose of this utility model is to provide an integrated bionic one-piece semi-permeable membrane degasser for the deficiencies of the prior art. Through the special cavity structure of the device, the separated measured gas can pass through the cavity quickly and smoothly. Reaching the sensor, greatly reducing the retention of the measured gas in the gas collection chamber, improving the precision and accuracy of gas logging, and realizing the integration of degassing, gas transmission, and detection, reducing the size of the device and reducing costs.

Subterranean mice are a highly specialized animal. Zokors, as a kind of subterranean mice, have evolved a highly developed olfactory system in order to adapt to the dark, low-oxygen, and difficult-to-transmit environment. The turbinates can regulate the air inhaled into the nasal cavity and provide Smell, its special turbinate structure can make the air intake more uniform and the flow field more stable, providing a bionic reference for the design of the rectifier.

In recent decades, the bionic drag reduction research has made great progress. The drag reduction effect can be obtained by changing the surface shape. Inspired by its travel resistance in the soil, the bionic microstructure is applied to the design of the semi-permeable membrane degasser, which can reduce the airflow resistance and ultimately improve the detection accuracy.

The utility model is composed of a degassing layer A, a gas collecting section B, a bionic rectifying plate C, a gas conveying section D, a sensor array E, an exhaust nozzle 1 and a wire 2, wherein the degassing layer A is fixedly connected to the gas collecting section B The front end; the six long plates 14 of the bionic rectifying plate C are embedded in the six transverse grooves 8 of the gas gathering section B, and the rear end of the bionic rectifying plate C is limited by the gas delivery section D; the front end of the gas delivery section D is connected to the gas gathering section B The rear end is threaded; the rear end of the gas transmission section D is threaded with the inlet of the exhaust nozzle 1.

The sensor array E is composed of sensor I19, sensor II20 and sensor III21. Sensor I19, sensor II20 and sensor III21 are evenly distributed in the annular groove 18 of the gas transmission section D, and the wire 2 is connected to the sensor I19, sensor II20 and sensor III21 through the through hole 17. connect.

The degassing layer A is composed of a semi-permeable membrane 6 and a supporting net 5, and the semi-permeable membrane 6 is attached to the supporting net 5.

The gas-gathering section B is a rotating body, and the outer contour of the axial section of the gas-gathering section B is sequentially connected by a straight line ab, a straight line bc, a straight line cd, an arc line de, and a straight line ef, wherein the gap between the straight line ab and the straight line bc Angle ₁ is 75°, the length of straight line bc is 20mm, the length of straight line cd is 15mm, the length of straight line ef is 10mm, the angle ₂ between straight line cd and straight line bc is 90 _; The central angle α ₁ is a circular arc formed by 85°; the inner contour of the axial section of the gas-gathering section B is formed by connecting the circular arc line ij and the straight line jk, wherein the circular arc line ij is defined by the radius r ₂ =75-80mm, the central angle α ₂ is an arc formed by 65°, and the length of straight line jk is 10mm; the wall thickness of ab section and cd section in gas-gathering section B is the same as the wall thickness t ₁ of bc section, and t ₁ is 3mm.

The maximum diameter d ₁ of the front end of the gas-gathering section B is 185-195mm, the diameter d ₂ of the degassing port of the gas-gathering section is 150-160mm, and the outer diameter d ₃ of the rear end of the gas-gathering section B is 36mm.

The inner ring of the straight line jk section at the rear end of the gas-gathering section B is provided with an internal thread, and a groove G is provided in front of the straight line jk section. The axial length _l1 of the groove is 20-25mm. Groove 8, the width _t2 of the transverse groove is 2mm, the maximum diameter _d7 corresponding to the transverse groove 8 in the cross section of the rear end of the gas collecting section B is 32mm, and the minimum diameter _d5 is 24mm.

The inner wall of the gas-gathering section B is provided with a pit-shaped biomimetic microstructure 10. The pits of the pit-shaped biomimetic microstructure 10 are shallow spherical with a surface diameter d' of 0.9-1.8 mm and a depth h of 0.3-0.6 mm. The center distance t between adjacent pits is 2-2.5mm.

The six carrier gas inlets 7 are evenly distributed on the rear edge of the largest diameter of the gas-gathering section B, and are evenly arranged along a circle with a diameter d6 of _166-176 mm. The outer diameter _d4 of the carrier gas inlet 7 is 10-12 mm, and the wall thickness is 3mm.

The gas transmission section D is round tubular, the length L of the gas transmission section is _80-85mm , the inner diameter d13 of the gas transmission section is 26mm, and the wall thickness t4 of the gas transmission section is 5mm _. The length l ₂ is 10mm, the end of the gas transmission section D is provided with an internal thread, and the length l ₄ of the internal thread is 10mm.

The inner ring before the internal thread at the end of the gas transmission section D is provided with an annular groove ₁₈ , the width l3 _of the annular groove is 20-25mm, the diameter d14 of the annular groove is 32mm, and the annular groove 18 is provided with a through hole 17.

The inner wall in front of the annular groove 18 in the gas transmission section D is provided with an annular bionic microstructure 16. The cross section of the annular bionic microstructure 16 is a semicircle with a radius r3 _of 0.4-0.6mm, and the semicircles are closely arranged along the axial direction of the inner wall.

The bionic rectifying plate C has a radial cross-section and is composed of six unit bodies F and a central cylinder 11, wherein the unit body F is composed of a short plate I12, an arc plate 13, a long plate 14 and a short plate II15. The plate I12 and the short plate II15 are symmetrically fixed on both sides of the long plate 14 via the arc plate 13, the angle α3 between the short plate I12 and the long plate 14 and the angle α4 between the short plate _II15 and the long plate ₁₄ are equal, both are 20 °; the inner end of the long plate 14 is affixed to the outer circle of the central cylinder 11 .

The 6 units F are evenly distributed in a circle with a diameter d11 of 32mm, the arc plate ₁₃ is located on a circle with a diameter _d8 of 16mm, and the short plate I12 and short plate _II15 are located between the circles with a diameter _d10 and a diameter d12 , where the diameter d ₁₀ is 20mm and the diameter d ₁₂ is 12mm.

The extension lines of the longitudinal axes of the short plate I12, the short plate II15 and the long plate 14 all intersect at the center of the central cylinder 11, and the outer diameter d9 of the central cylinder ₁₁ is 6 mm.

The wall thickness _t3 of the long plate 14 is 2 mm, and the wall thickness of the central cylinder 11, the short plate I12, the arc plate 13 and the short plate II15 are all 1 mm.

The axial length of the bionic rectifying plate C is equal to the axial length _l1 of the groove of the gas collecting section B, which is 20-25mm.

The working process of the utility model is as follows: when the whole device is in operation, due to the negative pressure caused by the air pump, the carrier gas enters the gas-collecting chamber 4 evenly along the edge of the gas-collecting section B, and has a certain effect on the semi-permeable membrane 6 of the degassing layer A. At the same time, due to the existence of negative pressure at the exhaust port, the air flow is funnel-shaped in the gas-collecting chamber 4, so that the measured gas separated by the semi-permeable membrane 6 can be taken away through the gas-collecting chamber 4 in time. When the bionic rectifying plate C is installed at the throat of the shell, the measured gas and the carrier gas can be more fully mixed, so that the gas concentration distribution is more uniform. At the same time, the bionic rectifying plate C plays a rectifying role, making the flow field entering the gas delivery chamber 3 more uniform Stable, the bionic microstructure of the inner wall of the gas collection section B and the gas transmission section D can reduce the gas flow resistance, and further enable the measured gas to reach the detection device quickly and smoothly. .

The beneficial effects of the utility model are:

1. The carrier gas enters from around the semi-permeable membrane, which can fully mix the separated measured gas and make the gas pass through the cavity to reach the sensor quickly and smoothly, greatly reducing the retention of the measured gas in the gas collection chamber.

2. The bionic microstructure on the inner wall of the shell can reduce the gas flow resistance and make the flow field more stable.

3. The bionic rectifier plays the role of rectification and mixing, which makes the measured gas and carrier gas fully mixed to make the gas concentration distribution more uniform, and at the same time, it can improve the instability of the upstream flow and make the air intake more uniform.

In a word, the utility model can be used for the detection and identification of gas layers in the process of oil and gas field exploration and development, and can significantly improve the precision and accuracy of gas logging, and at the same time, it can realize the integration of degassing, gas transmission and detection in well logging work , reducing device size and cost.

Description of drawings

Figure 1 is a perspective view of the integrated bionic integrated semi-permeable membrane degasser

Figure 2 is the front view of the integrated bionic integrated semi-permeable membrane degasser

Figure 3 is a schematic diagram of the structure of the gas-gathering section

Figure 4 is the right view of the gas gathering section

Figure 5 is a top view of the pit-like biomimetic microstructure

Figure 6 is a schematic diagram of the structure of the bionic rectifier

Figure 7 is a schematic diagram of the structure of the gas transmission section

Figure 8 is a schematic structural diagram of the sensor array

Among them: A. Degassing layer B. Gathering section C. Bionic rectifying plate D. Gas transmission section E. Sensor array F. Unit body G. Groove 1. Exhaust nozzle 2. Wire 3. Gas transmission chamber 4. Collection Air cavity 5. Support net 6. Semi-permeable membrane 7. Carrier gas inlet 8. Transverse groove 9. Gathering section shell 10. Dimple-like bionic microstructure 11. Central cylinder 12. Short plate Ⅰ 13. Arc plate 14. Long plate 15. Short plate II 16. Annular biomimetic microstructure 17. Through hole 18. Annular groove 19. Sensor Ⅰ 20. Sensor Ⅱ 21. Sensor Ⅲ

detailed description

Below in conjunction with accompanying drawing, the utility model is further analyzed.

As shown in Fig. 1, Fig. 2 and Fig. 8, the utility model is composed of a degassing layer A, a gas collecting section B, a bionic rectifying plate C, a gas conveying section D, a sensor array E, an exhaust nozzle 1 and a wire 2, wherein : The degassing layer A is fixedly connected to the front end of the gas-collecting section B; the 6 long plates 14 of the bionic rectifying plate C are embedded in the 6 transverse grooves 8 of the gas-collecting section B, and the rear end of the bionic rectifying plate C is formed by the air-transmitting section D Position limit; the front end of gas transmission section D is threadedly connected to the rear end of gas gathering section B; the rear end of gas transmission section D is threadedly connected to the inlet of exhaust nozzle 1. The sensor array E is composed of sensor I19, sensor II20 and sensor III21. Sensor I19, sensor II20 and sensor III21 are evenly distributed in the annular groove 18 of the gas transmission section D, and the wire 2 is connected to the sensor I19, sensor II20 and sensor III21 through the through hole 17. connect.

As shown in Figure 2, the degassing layer A is composed of a semipermeable membrane 6 and a support net 5, the material of the semipermeable membrane 6 is polydimethylsiloxane (PDMS), and the semipermeable membrane 6 is attached to the support net 5.

As shown in Figure 3, the gas-gathering section B is a rotating body, and the outer contour of the axial section of the gas-gathering section B is sequentially connected by straight line ab, straight line bc, straight line cd, circular arc line de, and straight line ef, in which the straight line ab and the straight line The included angle θ ₁ of bc is 75°, the length of the straight line bc is 20mm, the length of the straight line cd is 15mm, the length of the straight line ef is 10mm, the included angle θ ₂ between the straight line cd and the straight line bc is 90; the arc line de is based on the radius r ₁ = 60-65mm, the circular arc formed by the central angle α ₁ being 85°; the inner contour of the axial section of the gas-gathering section B is formed by connecting the circular arc line ij and the straight line jk, wherein the circular arc line ij is formed by the radius r ₂ =75 The arc formed by -80mm, the central angle _α2 is 65°, the length of the straight line jk is 10mm; the wall thickness of ab section and cd section in gas gathering section B is the same as the wall thickness _t1 of bc section, and _t1 is 3mm. The maximum diameter d ₁ of the front end of the gas-gathering section B is 185-195mm, the diameter d ₂ of the degassing port of the gas-gathering section is 150-160mm, and the outer diameter d ₃ of the rear end of the gas-gathering section B is 36mm.

As shown in Figure 3 and Figure 4, the inner ring of the straight line jk section at the rear end of the gas-gathering section B is provided with an internal thread, and a groove G is provided in front of the straight line jk section, the axial length _l1 of the groove is 20-25mm, and the groove G There are 6 horizontal grooves 8 evenly distributed in the circumferential direction, the width _t2 of the horizontal grooves is 2mm, the maximum diameter _d7 of the corresponding horizontal grooves 8 in the cross section of the rear end of the gas collecting section B is 32mm, and the minimum diameter _d5 is 24mm;

As shown in Figure 3 and Figure 5, the inner wall of the gas-gathering section B is provided with a pit-like biomimetic microstructure 10, and the pit-like biomimetic microstructure 10 has a surface diameter d' of 0.9-1.8 mm and a depth h of 0.3 mm. -0.6mm shallow spherical shape, the distance t between the centers of two adjacent pits is 2-2.5mm.

As shown in Figure 4, the six carrier gas inlets 7 are evenly distributed on the rear edge of the maximum diameter of the gas-gathering section B, and are evenly arranged along a circle with a diameter d6 of _166-176 mm, and the outer diameter _d4 of the carrier gas inlet 7 is 10 mm. -12mm with a wall thickness of 3mm.

As shown in Figure 7, the gas transmission section D is a circular tube, the length L of the gas transmission section is _80-85mm , the inner diameter d13 of the gas transmission section is 26mm, the wall thickness _t4 of the gas transmission section is 5mm, and the front end of the gas transmission section D is provided with external threads. _The length _l2 of the external thread is 10mm, the end of the gas transmission section D is provided with an internal thread, the length l4 of the internal thread is 10mm, the inner ring before the internal thread at the end of the gas transmission section D is provided with an annular groove 18, and the width l3 _of the annular groove is 20 -25mm, the annular groove diameter d ₁₄ is 32mm, and the annular groove 18 is provided with a through hole 17; the inner wall before the annular groove 18 in the gas transmission section D is provided with an annular bionic microstructure 16, and the section of the annular bionic microstructure 16 is The radius r ₃ is a semicircle of 0.4-0.6mm, and the semicircles are closely arranged along the axial direction of the inner wall.

As shown in Figure 6, the cross-section of the bionic rectifier C is radial, consisting of six unit bodies F and a central cylinder 11, in which the unit body F consists of a short plate I12, an arc plate 13, a long plate 14 and a short plate II15 The short plate I12 and the short plate II15 are symmetrically fixed on both sides of the long plate 14 via the arc plate 13, the angle α3 between the short plate I12 and the long plate ₁₄ is equal to the angle α4 between the short plate _II15 and the long plate 14, Both are 20°; the inner end of the long plate 14 is affixed to the outer circle of the central cylinder 11, the 6 units F are evenly distributed in a circle with a diameter d ₁₁ of 32 mm, and the arc plate 13 is located at a circle with a diameter d ₈ of 16 mm Above, short plate I12 and short plate _II15 are located between circles with diameters _d10 and d12, where diameter _d10 is 20mm and diameter _d12 is 12mm;

The extension lines of the longitudinal axes of the short plate I12, the short plate II15 and the long plate 14 all intersect at the center of the central cylinder 11; the outer diameter d9 of the central cylinder ₁₁ is 6mm; the wall thickness _t3 of the long plate 14 is 2mm, The wall thickness of the central cylinder 11, the short plate I12, the arc plate 13 and the short plate II15 are all 1 mm; the axial length of the bionic rectifying plate C is equal to the axial length _l1 of the groove of the gas-collecting section B, which is 20- 25mm.

Claims (5)

1. An integrated bionic integrated semi-permeable membrane degasser, characterized in that: it consists of a degassing layer (A), a gas collecting section (B), a bionic rectifying plate (C), a gas delivery section (D), and a sensor array (E), exhaust nozzle (1) and wire (2), wherein the degassing layer (A) is fixed on the front end of the gas collection section (B); 6 long plates (14) of the bionic rectifying plate (C) Embedded in 6 horizontal grooves (8) of the gas collection section (B), the rear end of the bionic rectifying plate (C) is limited by the gas transmission section (D); the front end of the gas transmission section (D) is connected to the gas collection section (B) The rear end is threaded; the rear end of the gas transmission section (D) is threaded with the inlet of the exhaust nozzle (1); the sensor array (E) is composed of sensor I (19), sensor II (20) and sensor III (21). I (19), sensor II (20) and sensor III (21) are evenly distributed in the annular groove (18) of the gas transmission section (D), and the wire (2) is connected to the sensor I (19), Sensor II (20) is connected to sensor III (21). 2. The integrated bionic integrated semi-permeable membrane degasser according to claim 1, characterized in that: the degassing layer (A) is composed of a semi-permeable membrane (6) and a support net (5), and the semi-permeable The membrane (6) is attached to the support net (5). 3. The integrated bionic integrated semi-permeable membrane degasser according to claim 1, characterized in that: the gas-collecting section (B) is a rotating body, and the axial section outer contour of the gas-collecting section (B) is formed by a straight line ab, straight line bc, straight line cd, arc line de and straight line ef are sequentially connected, wherein the angle θ ₁ between straight line ab and straight line bc is 75°, the length of straight line bc is 20mm, the length of straight line cd is 15mm, and the length of straight line ef is 10mm, the angle θ ₂ between the straight line cd and the straight line bc is 90; the arc line de is a circular arc formed by the radius r ₁ =60-65mm, and the central angle α ₁ is 85°; the gas-gathering section (B) axial The inner profile of the section is formed by connecting arc line ij and straight line jk, wherein arc line ij is a circular arc formed by radius r ₂ =75-80mm, central angle α ₂ is 65°, and the length of straight line jk is 10mm; The wall thickness of section ab and section cd in section (B) is the same as the wall thickness _t1 of section bc, and _t1 is 3mm; the maximum diameter d1 _of the front end of the gas collection section (B) is 185-195mm, and the diameter _d2 of the degassing port of the gas collection section is 150-160mm , the outer diameter d ₃ of the rear end of the gas-gathering section (B) is 36mm; the inner ring of the straight line jk section at the rear end of the gas-gathering section (B) is provided with an internal thread, and a groove (G) is provided in front of the straight line jk section, and the groove is axially The length _l1 is 20-25mm, the groove (G) is provided with 6 horizontal grooves (8) evenly distributed in the circumferential direction, the width _t2 of the horizontal groove is 2mm, and the corresponding horizontal groove ( ₈ ) The maximum diameter _d7 is 32mm, and the minimum diameter d5 is 24mm; the inner wall of the gas-gathering section (B) is provided with a pit-shaped bionic microstructure (10), and the pit-shaped bionic microstructure (10) is The surface diameter d' is 0.9-1.8mm, the depth h is shallow spherical shape of 0.3-0.6mm, the distance t between the centers of two adjacent pits is 2-2.5mm; 6 carrier gas inlets (7) are evenly distributed in the gas-gathering section The trailing edge of the maximum diameter of (B) is evenly arranged along a circle whose diameter d6 is _166-176mm , the outer diameter _d4 of the carrier gas inlet (7) is 10-12mm, and the wall thickness is 3mm. 4. The integrated bionic integrated semi-permeable membrane degasser according to claim 1, characterized in that: the gas delivery section (D) is a circular tube, the length L of the gas delivery section is 80-85mm, and the gas delivery section The inner diameter d ₁₃ is 26mm, the wall thickness t ₄ of the gas transmission section is 5mm, the front end of the gas transmission section (D) is provided with an external thread, the length l ₂ of the external thread is 10mm, and the end of the gas transmission section (D) is provided with an internal thread, the length of the internal thread is l ₄ is 10mm, the inner ring before the internal thread at the end of the gas transmission section (D) is provided with an annular groove ( ₁₈ ), the width _of the annular groove l3 is 20-25mm, the diameter of the annular groove d14 is 32mm, and the annular groove (18) is provided with There is a through hole (17); the inner wall before the annular groove (18) in the gas transmission section (D) is provided with an annular bionic microstructure (16), and the section of the annular bionic microstructure ( ₁₆ ) is that the radius r is 0.4- 0.6mm semicircle, and the semicircle is closely arranged along the axial direction of the inner wall. 5. The integrated bionic integrated semi-permeable membrane degasser according to claim 1, characterized in that: the cross-section of the bionic rectifying plate (C) is radial, consisting of 6 unit bodies (F) and a central circle tube (11), in which the unit body (F) is composed of short plate I (12), arc plate (13), long plate (14) and short plate II (15), short plate I (12) and short plate II (15) is symmetrically affixed to both sides of the long plate (14) via the arc plate (13), and the included angle α between the short plate I (12) and the long plate ( ₁₄ ) and the short plate II (15) and the long plate ( 14) the included angle α ₄ is equal, both are 20 ⁰ ; the inner end of the long plate (14) is affixed to the outer circle of the central cylinder ( ₁₁ ); Inside the circle, the arc plate (13) is located on a circle with a diameter _d8 of 16mm, and the short plate I ( ₁₂ ) and short plate II (15) are located between the circles with a diameter _d10 and a diameter d12, where the diameter _d10 is 20mm, diameter d ₁₂ is 12mm; the extension lines of the longitudinal axes of the short plate I (12), short plate II (15) and long plate (14) all intersect at the center of the central cylinder (11); the central cylinder (11 )’s outer diameter d ₉ is 6mm; the wall thickness t ₃ of the long plate (14) is 2mm, the central cylinder (11), the short plate I (12), the arc plate (13) and the short plate II (15) The wall thicknesses are all 1mm; the axial length of the bionic rectifying plate (C) is equal to the axial length _l1 of the groove of the gas collecting section (B), which is 20-25mm.