An engineering geological drilling automation while-drilling measurement device

Abstract

The present application relates to the field of geological drilling, and more particularly to an engineering geological drilling automation while-drilling measurement device, comprising a columnar shell; a pressure sensor, a limiting ring and a valve stem are sequentially arranged in the length direction inside the columnar shell; a plurality of arc-shaped slots are circumferentially arranged on one end of the columnar shell away from the limiting ring; further comprising a through-hole mechanism and an adjusting mechanism; a plurality of communication holes are circumferentially arranged on the outer walls on both sides of the limiting ring; the through-hole mechanism has two groups, and both groups of the through-hole mechanism are arranged inside the columnar shell and on both sides of the limiting ring, and the through-hole mechanism is used for dredging the communication holes; each group of the through-hole mechanism comprises a plurality of sliding discs slidingly arranged in the corresponding communication holes; the adjusting mechanism is arranged inside the columnar shell and is used for enabling the corresponding plurality of moving bars to move back and forth along the positioning groove. The present application realizes the cleaning of the communication holes and the circulation of the auxiliary liquid at the same time through the movement of the plurality of sliding discs, and ensures the measurement effect.

Description

Technical Field

[0001] This invention relates to the field of geological drilling, and more specifically, to an automated measurement-while-drilling device for engineering geological drilling. Background Technology

[0002] Measurement While Drilling (MWD) is an advanced technology in directional drilling that allows for the continuous directional drilling process to measure certain information near the bottom of the borehole and immediately transmit that information to the surface.

[0003] Chinese patent CN119466761A discloses a measurement while drilling (MWD) device, including a main body. A pressure sensor is fixedly connected to the inner wall of the left side of the main body. Several circular through holes are opened on the outer surface of the main body. The several circular through holes are arranged in a circumferential array of five groups of five with the pressure sensor as the center. The two groups of circular through holes are distributed at equal distances. Several rectangular through holes are opened on the outer surface of the main body.

[0004] In this patent, the squeezed mud enters the scraper ring through the connecting hose, thereby impacting the circular and rectangular through holes. However, solid particles mixed in the mud may accumulate in the connecting hose and inside the scraper ring, which may cause the scraper ring to jam or the connecting hose to become clogged, thus affecting the measurement data. Summary of the Invention

[0005] The main objective of this invention is to provide an automated measurement-while-drilling device for engineering geological drilling, which, through the movement of multiple sliding discs, enables the cleaning of interconnected holes while simultaneously facilitating the flow of fluid.

[0006] To achieve the above objectives, the present invention provides an automated measurement-while-drilling device for engineering geological drilling, comprising a cylindrical shell; a pressure sensor, a limiting ring, and a valve stem are sequentially arranged along the length of the cylindrical shell; multiple arc-shaped slots are circumferentially arranged at the end of the cylindrical shell away from the limiting ring on the valve stem; it also includes a through-hole mechanism and an adjustment mechanism; multiple connecting holes are circumferentially arranged on the outer walls of the cylindrical shell on both sides of the limiting ring; there are two sets of through-hole mechanisms, both sets of which are arranged inside the cylindrical shell and on both sides of the limiting ring, and the through-hole mechanisms are used to clear the connecting holes; each set of through-hole mechanisms includes multiple sliding discs slidably arranged in the corresponding connecting holes; each sliding disc is provided with a positioning strip at the end near the corresponding interior of the cylindrical shell; multiple L-shaped mounting plates are circumferentially arranged on the inner walls of the cylindrical shell on both sides of the limiting ring, and positioning grooves are provided on the L-shaped mounting plates, with the positioning strips slidably arranged in the corresponding positioning grooves; the adjustment mechanism is arranged inside the cylindrical shell and is used to enable the corresponding multiple moving strips to move back and forth along the positioning grooves.

[0007] Preferably, the adjustment mechanism includes a connecting shaft and a guide plate; the connecting shaft is coaxially and rotatably disposed at the center inside the limiting ring, and guide plates are provided at both ends of the connecting shaft. Each positioning bar has a contact rod extending toward the corresponding guide plate at the end away from the sliding plate. Each guide plate has multiple arc-shaped guide surfaces circumferentially disposed to cooperate with the contact rods. Each positioning bar is also fitted with a return spring, which is located between the corresponding L-shaped mounting plate and the corresponding sliding plate.

[0008] Preferably, each guide plate is also provided with multiple radial drop surfaces that circumferentially cooperate with the arc-shaped guide surface.

[0009] Preferably, the number of arc-shaped guide surfaces on the guide plate is less than the number of corresponding sliding plates.

[0010] Preferably, the connecting shaft is provided with multiple starting blades circumferentially on the outer wall of the limiting ring.

[0011] Preferably, the connecting shaft is also provided with a plurality of inclined upper guide plates in a circumferential manner.

[0012] The advantages of this application compared to the prior art are:

[0013] 1. This application uses a sliding disk that can move back and forth to thoroughly clean the connecting hole, avoiding blockage inside the connecting hole and preventing measurement from being impossible.

[0014] 2. By rotating the guide plate, when the contact rod moves to the radial drop surface, the sliding plate can be accelerated to move towards the corresponding connecting hole under the elastic force of the return spring, thereby improving the cleaning effect on the connecting hole.

[0015] 3. This application guides the liquid by moving the sliding disk back and forth, thereby accelerating the liquid flow and enabling rapid measurement. Since the number of arc-shaped guiding surfaces on the guiding disk is less than the number of corresponding sliding disks, there are always connecting holes open at any time. This ensures that the liquid can enter the cylindrical shell during the cleaning of the connecting holes, thus avoiding any impact on the measurement. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention, making other features, objects, and advantages of the invention more apparent. The illustrative embodiments of the invention illustrated in the drawings and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a front view of the present invention;

[0019] Figure 3 yes Figure 2 A three-dimensional sectional view along the AA direction;

[0020] Figure 4 yes Figure 3 Enlarged view of a section at point B in the middle;

[0021] Figure 5 This is a partial exploded perspective view of the present invention.

[0022] The numbers in the above figure are:

[0023] 1-Columnar housing; 11-Pressure sensor; 12-Limit ring; 13-Valve stem; 14-Arc-shaped slot; 15-Connecting hole; 16-L-shaped mounting plate; 161-Positioning groove;

[0024] 2-Through hole mechanism; 21-Sliding disk; 22-Positioning bar; 23-Abutting rod; 24-Return spring;

[0025] 3-Adjustment mechanism; 31-Connecting shaft; 311-Starting blade; 312-Upper guide plate; 32-Guide disc; 321-Arc-shaped guide surface; 322-Radial drop surface. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] See Figures 1 to 5As shown, an automated measurement-while-drilling device for engineering geological drilling includes a cylindrical housing 1; a pressure sensor 11, a limiting ring 12, and a valve stem 13 are sequentially arranged along the length of the cylindrical housing 1; multiple arc-shaped slots 14 are circumferentially arranged at the end of the cylindrical housing 1 away from the limiting ring 12; it also includes a through-hole mechanism 2 and an adjustment mechanism 3; multiple connecting holes 15 are circumferentially arranged on the outer walls of the cylindrical housing 1 on both sides of the limiting ring 12; there are two sets of through-hole mechanisms 2, both sets of which are arranged inside the cylindrical housing 1 and on both sides of the limiting ring 12. 2 is used to clear the connecting hole 15; each set of connecting hole mechanism 2 includes multiple sliding disks 21 that are slidably disposed in the corresponding connecting hole 15; each sliding disk 21 is provided with a positioning strip 22 at one end near the interior of the corresponding columnar housing 1, and multiple L-shaped mounting plates 16 are circumferentially disposed on the inner walls on both sides of the columnar housing 1 located at the limiting ring 12, and positioning grooves 161 are provided on the L-shaped mounting plates 16, and the positioning strips 22 are slidably disposed in the corresponding positioning grooves 161; the adjustment mechanism 3 is disposed inside the columnar housing 1 and is used to enable the corresponding multiple moving strips to move back and forth along the positioning grooves 161.

[0028] To ensure that the liquid in the hole can smoothly enter the cylindrical housing 1 during the measurement process and avoid blockage of the connecting hole 15, a sliding disk 21 is slidably installed in each connecting hole 15. Each sliding disk 21 is connected to the L-shaped mounting plate 16 inside the cylindrical housing 1 via a positioning strip 22. At this time, the adjustment mechanism 3 adjusts the position of the positioning strip 22, thereby adjusting the position of the sliding disk 21, so that the moving strip can drive the corresponding sliding disk 21 to move. When the sliding disk 21 moves from the connecting hole 15 toward the inside of the cylindrical housing 1, the liquid in the hole can enter the inside of the cylindrical housing 1 through the connecting hole 15, thereby changing the value of the pressure sensor 11. Furthermore, there is a certain gap between the sliding disk 21 and the connecting hole 15, which can prevent large impurities from entering the inside of the cylindrical housing 1 and accumulating. Similarly, when the sliding disk 21 moves toward the outside of the cylindrical housing, the sliding disk 21 can not only push the impurities in the connecting hole 15, but also prevent the connecting hole 15 from being blocked.

[0029] See Figures 3 to 5 As shown, the adjustment mechanism 3 includes a connecting shaft 31 and a guide plate 32. The connecting shaft 31 is coaxially and rotatably disposed at the center inside the limiting ring 12. Guide plates 32 are provided at both ends of the connecting shaft 31. Each positioning bar 22 is provided with an abutment rod 23 extending toward the corresponding guide plate 32 at the end away from the sliding plate 21. Each guide plate 32 is provided with multiple arc-shaped guide surfaces 321 that cooperate with the abutment rods 23 in the circumferential direction. A return spring 24 is also sleeved on each positioning bar 22. The return spring 24 is located between the corresponding L-shaped mounting plate 16 and the corresponding sliding plate 21.

[0030] The rotation of the connecting shaft 31 drives the two guide disks 32 to rotate. Each guide disk 32 has multiple arc-shaped guide surfaces 321 arranged circumferentially. When the arc-shaped guide surfaces 321 are not in contact with the abutting rods 23 on the positioning strip 22, the positioning strip 22, under the elastic force of the return spring 24, makes the sliding disk 21 face the outside of the cylindrical housing 1. As the connecting shaft 31 rotates, the abutting rods 23 come into contact with the arc-shaped guide surfaces 321, so that the abutting rods 23 can move along the arc-shaped guide surfaces 321 toward the center of the corresponding guide disk 32. At this time, the positioning strip 22 can overcome the elastic force of the corresponding return spring 24 and move toward the inside of the cylindrical housing 1. During the movement, the sliding disk 21 can completely clean the connecting hole 15, thereby avoiding blockage. When the arc-shaped guide surfaces 321 separate from the abutting rods 23, the sliding disk 21 can be reset under the elastic force of the return spring 24, thereby enabling a secondary cleaning of the connecting hole 15.

[0031] See Figures 3 to 5 As shown, each guide plate 32 is also provided with multiple radial drop surfaces 322 that cooperate with the arc-shaped guide surface 321.

[0032] The radial drop surface 322 is a vertical plane pointing towards the center of the corresponding guide plate 32. The radial drop surface 322 and the corresponding arc-shaped guide surface 321 form a shape similar to a right triangle (with the hypotenuse being arc-shaped). As the connecting shaft 31 rotates, the contact rod 23 moves along the arc-shaped guide surface 321. At this time, the return spring 24 is compressed to generate elastic force. When the contact rod 23 moves to the radial drop surface 322, under the action of the elastic force of the return spring 24, the sliding plate 21 can be accelerated to move towards the corresponding connecting hole 15, thereby improving the cleaning effect on the connecting hole 15. In addition, during the accelerated movement, it can guide the liquid located between the pressure sensor 11 and the limiting ring 12, so that the liquid can be discharged faster and ensure the measurement accuracy.

[0033] See Figure 5 As shown, the number of arc-shaped guide surfaces 321 on the guide disk 32 is less than the number of corresponding sliding disks 21.

[0034] The number of arc-shaped guide surfaces 321 is less than the number of corresponding sliding disks 21 (e.g., in this application, the number of circumferentially arranged sliding disks 21 is 8, and the number of arc-shaped guide surfaces 321 is 6). Based on this, during the rotation of the guide disk 32, as multiple sliding disks 21 move, it can be ensured that at any time, there is a connecting hole 15 in the open state, thereby ensuring that during the cleaning of the connecting hole 15, liquid can enter the interior of the cylindrical shell 1, avoiding any impact on the measurement.

[0035] See Figure 5As shown, the connecting shaft 31 has multiple starting blades 311 arranged circumferentially on the outer wall of the limiting ring 12.

[0036] By providing a starting blade 311, which is slidably connected to the limiting ring 12, the starting blade 311 can drive the connecting shaft 31 to rotate under the impact of the liquid when the liquid passes through, thereby adjusting the position of the multiple sliding discs 21.

[0037] See Figure 5 As shown, the connecting shaft 31 is also provided with a plurality of inclined upper guide plates 312 in a circumferential manner.

[0038] By setting multiple upper guide plates 312, which are located between the limiting ring 12 and the pressure sensor 11, impurities entering the cylindrical housing 1 can be guided to move towards the connecting hole 15. With the cooperation of the sliding plate 21, some impurities can be continuously pushed out of the cylindrical housing 1, thereby avoiding excessive impurities from accumulating on the surface of the limiting ring 12 and affecting subsequent measurements.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automated measurement-while-drilling device for engineering geological drilling, comprising a cylindrical shell; a pressure sensor, a limiting ring, and a valve stem are sequentially arranged along the length of the cylindrical shell; the cylindrical shell has multiple arc-shaped slots circumferentially arranged at the end of the valve stem away from the limiting ring; characterized in that, It also includes a through-hole mechanism and an adjustment mechanism; The cylindrical shell has multiple connecting holes circumferentially arranged on the outer walls on both sides of the limiting ring; there are two sets of through hole mechanisms, both of which are set inside the cylindrical shell and located on both sides of the limiting ring, and the through hole mechanisms are used to clear the connecting holes; Each through-hole mechanism includes multiple sliding discs that are slidably disposed in the corresponding through-holes; each sliding disc has a positioning strip at one end near the interior of the corresponding cylindrical shell, and the cylindrical shell has multiple L-shaped mounting plates circumferentially disposed on the inner walls on both sides of the limiting ring, and the L-shaped mounting plates are provided with positioning grooves, and the positioning strips are slidably disposed in the corresponding positioning grooves; The adjustment mechanism is located inside the cylindrical housing and is used to enable the corresponding multiple moving strips to move back and forth along the positioning groove; the adjustment mechanism includes a connecting shaft and a guide plate; The connecting shaft is rotatably mounted coaxially at the center of the limiting ring. Guide plates are provided at both ends of the connecting shaft. Each positioning bar has a contact rod extending towards the corresponding guide plate at the end away from the sliding plate. Each guide plate has multiple arc-shaped guide surfaces that cooperate with the contact rods circumferentially. Each positioning bar is also fitted with a return spring, which is located between the corresponding L-shaped mounting plate and the corresponding sliding plate.

2. The automated measurement-while-drilling device for engineering geological drilling according to claim 1, characterized in that, Each guide plate also has multiple radial drop surfaces circumferentially arranged to mate with the curved guide surface.

3. The automated measurement-while-drilling device for engineering geological drilling according to claim 2, characterized in that, The number of arc-shaped guide surfaces on the guide plate is less than the number of corresponding sliding plates.

4. The automated measurement-while-drilling device for engineering geological drilling according to claim 1, characterized in that, Multiple starting blades are arranged circumferentially on the outer wall of the connecting shaft located at the limit ring.

5. The automated measurement-while-drilling device for engineering geological drilling according to claim 1, characterized in that, The connecting shaft is also circumferentially equipped with multiple inclined upper guide plates.

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