Drill guide drilling tool plunger thrust measuring device

Abstract

The invention relates to a drill guide drilling tool plunger thrust measuring device which comprises a cylinder and three plunger thrust measuring mechanisms, and three through measuring holes are evenly formed in the cylinder in the circumferential direction of the cylinder at intervals. And the three plunger thrust measuring mechanisms are respectively arranged at the three measuring holes. The device has the beneficial effects that the thrust of a plunger of a drill bit guiding tool can be transmitted to the thrust sensor, and meanwhile, high-speed drilling fluid overflowing from the plunger is isolated; the impact force borne by the plunger and the sensor is buffered through the spring, the plunger and the sensor are protected against damage in the testing process, the situation that the plunger and the sensor are usually used for transmitting measurement signals of the rotary motion sensor is omitted, cost is reduced, and the reliability of signal transmission is improved; meanwhile, an accurate and reliable plunger thrust measuring scheme can be provided for a drill bit guiding tool, and a necessary testing device is provided for research, development, production and maintenance of a drill bit guiding system.

Description

Technical Field

[0001] The invention relates to the field of wellbore trajectory measurement and control for oil and natural gas exploitation, and relates to a plunger thrust measurement device for a drill bit guide drilling tool. Background Art

[0002] The drill bit guidance system is a high-end rotary guidance system launched in 2019. It has been widely used at home and abroad due to its excellent performance. The system uses a plunger integrated on the drill bit or close to the drill bit to support the well wall to produce a deflection effect. The size and accuracy of the plunger force are one of the key factors to achieve the expected deflection rate. Therefore, in the process of research and development, production and maintenance of drill bit guidance tools, it is urgent to accurately measure the plunger thrust during the whole machine function test.

[0003] Since the plunger and the drill bit guide tool housing rotate simultaneously during the whole machine test, and high-speed drilling fluid overflows from the gaps around the plunger, it is difficult to accurately measure the plunger thrust. The drill bit guide system currently does not have a device to accurately measure the thrust of the rotating piston. The thrust is indirectly obtained by multiplying the drill bit water hole pressure drop and the plunger area. Since the friction between the plunger and the plunger cylinder and the dynamic process of the plunger from the gradual increase of the control valve opening pressure to the beginning of movement and then contact with the sensor are ignored, only the theoretical maximum thrust value can be obtained. Summary of the invention

[0004] The invention provides a plunger thrust measuring device for a drill bit guide drilling tool, aiming to solve the problems in the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A plunger thrust measuring device for a drill bit guide drilling tool comprises a cylinder and three plunger thrust measuring mechanisms. The cylinder is provided with three penetrating measuring holes evenly spaced along its circumference; the three plunger thrust measuring mechanisms are respectively installed at the three measuring holes.

[0007] The beneficial effects of the present invention are as follows: during the measurement process, the cylinder is fixedly sleeved on the position of the drill bit guide drilling tool guide body corresponding to the plunger, so that the three plunger thrust measuring mechanisms are just located on the outside of the three plungers; when the three plungers are extended, the three plunger thrust measuring mechanisms are respectively squeezed, and at this time, the three plunger thrust measuring mechanisms can be used to measure the thrust of the three plungers, which is convenient for measurement.

[0008] The present invention can provide an accurate and reliable plunger thrust measurement solution for a drill guide tool, and provide necessary testing devices for the research and development, production and maintenance of a drill guide system, thereby eliminating the need for a rotary motion sensor measurement signal commonly used to transmit the rotary motion sensor, reducing costs and improving the reliability of signal transmission.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the three plunger thrust measuring mechanisms respectively include thrust sensors and force transmission blocking plungers, and the three force transmission blocking pistons are respectively installed in the three measuring holes, and can respectively move along the radial direction of the cylinder; the three thrust sensors are respectively mounted on the cylinder, and are respectively located on the outsides of the three force transmission blocking pistons, and the three force transmission blocking pistons can respectively squeeze the three thrust sensors during the movement.

[0011] The beneficial effect of adopting the above further scheme is that during the measurement process, the three plungers extend and respectively push the three force transmission barrier pistons to move in the three measuring holes. The three force transmission barrier pistons squeeze the three thrust sensors during the movement. At this time, the three thrust sensors respectively measure the thrust of the three plungers, which facilitates the measurement.

[0012] Furthermore, sealing rings are respectively installed between the three force transmission blocking pistons and the hole walls of the three measuring holes.

[0013] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the three sealing rings can be used to isolate the drilling fluid respectively.

[0014] Furthermore, the three thrust sensors are respectively fixed on the cylinder through brackets.

[0015] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The three thrust sensors are respectively fixed on the cylinder by brackets, which is convenient for assembly.

[0016] Furthermore, the three thrust sensors are respectively connected with buffer assemblies, and the three buffer assemblies are respectively located between the three thrust sensors and the three force transmission blocking pistons.

[0017] The beneficial effects of adopting the above-mentioned further scheme are simple structure and reasonable design. The buffer assembly is used to buffer the impact force on the plunger and thrust sensor, thereby protecting the plunger and thrust sensor from damage during testing. The sensor commonly used to transmit the measurement signal of the rotational motion sensor is eliminated, thereby reducing costs and improving the reliability of signal transmission.

[0018] Furthermore, the three buffer assemblies respectively include a buffer screw and a spring, and one end of the three buffer screws is respectively connected to the three thrust sensors; the three springs are respectively located between the three thrust sensors and the three force transmission blocking pistons, and both ends thereof are respectively abutted against the other ends of the three force transmission blocking pistons and the three buffer screws.

[0019] The beneficial effects of adopting the above-mentioned further scheme are simple structure and reasonable design. The impact force exerted on the plunger and thrust sensor is buffered by the spring, and the plunger and thrust sensor are protected from damage during the test. The measurement signal of the rotational motion sensor is eliminated, thereby reducing costs and improving the reliability of signal transmission.

[0020] Furthermore, the other ends of the three buffer screws are respectively provided with annular grooves, and one ends of the three springs extend into the three annular grooves respectively and abut against the bottoms of the three annular grooves respectively.

[0021] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The design of the annular groove is used to ensure stable assembly of the spring, thereby ensuring the buffering effect of the spring.

[0022] Furthermore, one end of the three thrust sensors is respectively provided with a screw hole, and the other ends of the three buffer screws are respectively threadedly connected to the three screw holes.

[0023] The beneficial effects of adopting the above further solution are simple structure, reasonable design, threaded connection between the buffer screw and the three thrust sensors, convenient disassembly and assembly, saving time and effort.

[0024] Furthermore, a radial limiting assembly is installed on the cylinder.

[0025] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The radial limit assembly can be used to prevent the plunger thrust measuring device body from rotating along the circumferential direction of the drilling tool guide body.

[0026] Furthermore, an axial limiting assembly is also installed on the cylinder.

[0027] The beneficial effects of adopting the above further solution are simple structure and reasonable design, and the axial limit assembly can be used to prevent the plunger thrust measuring device body from moving axially along the drilling tool guide body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an axial cross-sectional view of the present invention;

[0029] Figure 2 is a circumferential cross-sectional view of the present invention;

[0030] Figure 3 It is an assembly diagram of the thrust sensor, buffer screw, spring and force transmission barrier piston in the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Drill bit guide drilling tool guide body; 2. Axial limit screw; 3. Bracket; 4. Thrust sensor; 5. Buffer screw; 6. Spring; 7. Force transmission blocking piston; 8. Sealing ring; 9. Plunger; 10. Plunger sleeve; 11. Circumferential limit screw; 12. Cylinder; 13. Annular groove. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] Example 1

[0038] like Figures 1 to 3 As shown, this embodiment provides a plunger thrust measuring device for a drill bit guide drilling tool, including a cylinder 12 and three plunger thrust measuring mechanisms, wherein the cylinder 12 is provided with three penetrating measuring holes evenly spaced along its circumference; the three plunger thrust measuring mechanisms are respectively installed at the three measuring holes.

[0039] During the measurement process, the cylinder 12 is fixedly sleeved on the position of the drill bit guide drilling tool guide body 1 corresponding to the plunger 9, so that the three plunger thrust measuring mechanisms are just located on the outside of the three plungers 9; when the three plungers 9 are extended, the three plunger thrust measuring mechanisms are squeezed respectively. At this time, the three plunger thrust measuring mechanisms can be used to measure the thrust of the three plungers 9, which is convenient for measurement.

[0040] Based on the above solution, the cylinder 12 is coaxially sleeved on the drill bit guiding drilling tool guiding body 1 , and the inner wall of the cylinder 12 is in contact with the outer wall of the drill bit guiding drilling tool guiding body 1 .

[0041] This embodiment can provide an accurate and reliable plunger thrust measurement solution for the drill guide tool, and provide necessary testing equipment for the research and development, production and maintenance of the drill guide system, eliminating the measurement signal of the rotational motion sensor commonly used to transmit, thereby reducing costs and improving the reliability of signal transmission.

[0042] Example 2

[0043] On the basis of Example 1, in this embodiment, the three plunger thrust measuring mechanisms respectively include thrust sensors 4 and force transmission blocking pistons 7, and the three force transmission blocking pistons 7 are respectively installed in the three measuring holes, and can respectively move along the radial direction of the cylinder 12; the three thrust sensors 4 are respectively mounted on the cylinder 12, and are respectively located on the outsides of the three force transmission blocking pistons 7, and the three force transmission blocking pistons 7 can respectively squeeze the three thrust sensors 4 during the movement.

[0044] During the measurement process, the three plungers 9 extend and push the three force transmission blocking pistons 7 to move in the three measuring holes respectively. The three force transmission blocking pistons 7 squeeze the three thrust sensors 4 during the movement. At this time, the three thrust sensors 4 measure the thrust of the three plungers respectively, which facilitates the measurement.

[0045] It should be noted that the three thrust sensors 4 mentioned above respectively adopt the existing technologies, and their specific structures and principles are not described in detail here.

[0046] Example 3

[0047] On the basis of Example 2, in this embodiment, sealing rings 8 are respectively installed between the three force transmission blocking pistons 7 and the hole walls of the three measuring holes.

[0048] This solution has a simple structure and a reasonable design, and the three sealing rings 8 can be used to isolate the drilling fluid respectively.

[0049] Preferably, in this embodiment, annular mounting grooves are respectively provided on the three force transmission blocking pistons 7, and three sealing rings 8 are respectively sleeved in the three annular mounting grooves, and the outer walls thereof are respectively fitted with the hole walls of the three measuring holes.

[0050] Example 4

[0051] On the basis of any one of Embodiments 2 to 3, in this embodiment, the three thrust sensors 4 are respectively fixedly mounted on the cylinder 12 through brackets 3 .

[0052] This solution has a simple structure and a reasonable design. The three thrust sensors 4 are respectively fixed on the cylinder 12 by the brackets 3, and the assembly is convenient.

[0053] Preferably, in the present embodiment, the three brackets 3 are preferably gantry frames or other suitable geometric structures. For example, when a gantry frame is used, both sides of its open end are respectively fixedly connected to the cylinder 12, and the three thrust sensors 4 are respectively fixedly installed in the three gantry frames and fixedly connected to the inner side of the closed end of the gantry frame.

[0054] Example 5

[0055] On the basis of any one of Examples 2 to 4, in this embodiment, the three thrust sensors 4 are respectively connected with buffer components, and the three buffer components are respectively located between the three thrust sensors 4 and the three force transmission blocking pistons 7 .

[0056] This solution has a simple structure and a reasonable design. It utilizes a buffer assembly to buffer the impact force exerted on the plunger 9 and the thrust sensor 4, thereby protecting the plunger 9 and the thrust sensor 4 from damage during testing. It eliminates the need for a sensor that is usually used to transmit measurement signals of a rotational motion, thereby reducing costs and improving the reliability of signal transmission.

[0057] Example 6

[0058] On the basis of Example 5, in this embodiment, the three buffer assemblies respectively include a buffer screw 5 and a spring 6, and one end of the three buffer screws 5 is respectively connected to the three thrust sensors 4; the three springs 6 are respectively located between the three thrust sensors 4 and the three force transmission blocking pistons 7, and the two ends thereof are respectively abutted against the other ends of the three force transmission blocking pistons 7 and the three buffer screws 5.

[0059] This solution has a simple structure and a reasonable design. It uses a spring to buffer the impact force on the plunger and thrust sensor 4, protecting the plunger 9 and thrust sensor 4 from damage during the test, eliminating the need for a sensor commonly used to transmit measurement signals of a rotational motion, reducing costs and improving the reliability of signal transmission.

[0060] Example 7

[0061] On the basis of Example 6, in this embodiment, the other ends of the three buffer screws 5 are respectively provided with annular grooves 13, and one ends of the three springs 6 respectively extend into the three annular grooves 13 and respectively abut against the bottoms of the three annular grooves 13.

[0062] This solution has a simple structure and a reasonable design. The design of the annular groove 13 is used to ensure stable assembly of the spring 6, thereby ensuring the buffering effect of the spring 6.

[0063] Example 8

[0064] On the basis of any one of Embodiments 6 to 7, in this embodiment, screw holes are respectively provided on one end of the three thrust sensors 4, and the other ends of the three buffer screws 5 are respectively threadedly connected to the three screw holes.

[0065] The solution has a simple structure and a reasonable design. The buffer screw 5 is threadedly connected to the three thrust sensors 4, which is convenient for disassembly and assembly, saving time and effort.

[0066] Preferably, in this embodiment, the three buffer screws 5 and the three force transmission blocking pistons 7 are respectively on the same axis.

[0067] Example 9

[0068] On the basis of the above embodiments, in this embodiment, a radial limiting assembly is further installed on the cylinder 12 .

[0069] The solution has a simple structure and a reasonable design, and the radial limit assembly can be used to prevent the plunger thrust measuring device body from rotating along the circumferential direction of the drilling tool guide body.

[0070] Preferably, in this embodiment, the above-mentioned radial limit assembly includes a plurality of circumferential limit screws 11, and the plurality of circumferential limit screws 11 are evenly distributed on the cylinder 12 at circumferential intervals, and the plurality of circumferential limit screws 11 are respectively threadedly connected to a plurality of screw holes on the cylinder 12, and are respectively used to fix the cylinder 12 on the drill bit guide drilling tool guide body 1.

[0071] Preferably, in this embodiment, the number of the circumferential limit screws 11 is preferably six.

[0072] Example 10

[0073] On the basis of the above embodiments, in this embodiment, an axial limiting assembly is further installed on the cylinder 12 .

[0074] The solution has a simple structure and a reasonable design, and the axial limit assembly can be used to prevent the plunger thrust measuring device body from moving axially along the drilling tool guide body.

[0075] Preferably, in this embodiment, the axial limit assembly includes a plurality of axial limit screws 2 , and the cylinder 12 is fixed by the plurality of axial limit screws 2 .

[0076] Preferably, in this embodiment, the number of the axial limit screws 2 is preferably two.

[0077] The working principle of the present invention is as follows:

[0078] During the ground whole machine test of the drill bit steering drilling tool, when the plunger 9 is extended, there is a gap between the plunger 9 and the plunger sleeve 10, and the pressure inside the plunger 9 is high, so high-speed drilling fluid overflows between the plunger 9 and the plunger sleeve 10. The force transmission isolation plunger 7 with the sealing ring 8 plays the role of isolating the drilling fluid;

[0079] When the plunger 9 extends, it drives the force transmission blocking piston 7 to extend synchronously, and the force transmission blocking piston 7 contacts the spring 6 on the buffer screw 5, and continues to compress the spring 6 until the spring elastic force is equal to the plunger thrust or the force transmission blocking piston 7 contacts the spring compression limit of the buffer screw 5. Due to the buffering effect of the spring 6, the impact between the plunger force transmission blocking piston 7 and the thrust sensor 4 is weakened, the upper end surface of the plunger force transmission blocking piston 7 in contact with the well wall is protected, and the thrust sensor 4 can also be prevented from being damaged. Since the plunger thrust measuring device body is fixed on the drill bit guide drilling tool guide body 1 for rotation, the three thrust sensors 4 on the plunger thrust measuring device body use thrust sensors with their own power supply and electromagnetic wave wireless communication functions to solve the rotation measurement problem.

[0080] The present invention provides a device for measuring the thrust of a drill bit guide drilling tool plunger, which aims to isolate the impact of drilling fluid overflowing from the drill bit guide tool plunger, the buffer plunger and the sensor, and realize accurate measurement of the thrust of the rotating plunger in ground testing.

[0081] The present invention can transmit the plunger thrust of the drill bit guide tool to the thrust sensor, while isolating the high-speed drilling fluid overflowing from the plunger. The spring is used to buffer the impact force on the plunger and the sensor, protecting the plunger and the sensor from damage during the test. The measurement signal of the rotary motion sensor is omitted, which reduces the cost and improves the reliability of signal transmission. The present invention can provide an accurate and reliable plunger thrust measurement solution for the drill bit guide tool, and provide necessary testing devices for the research and development, production and maintenance of the drill bit guide system.

[0082] In order to achieve accurate measurement of the thrust of the rotating plunger of the drill bit guide system, the present invention uses a sealed force transmission isolation plunger to separate the thrust plunger from the sensor, and the thrust plunger pushes the force transmission barrier piston to apply thrust to the sensor action rod; a spring is installed on the sensor action rod, and the force transmission barrier piston first compresses the spring, and as the compression amount gradually increases, it finally contacts the action rod, and the spring plays a buffering role; a sensor with a battery and electromagnetic wave wireless communication function is used to measure the thrust.

[0083] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0084] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plunger thrust measuring device for a drill bit guide drilling tool, characterized in that: It comprises a cylinder (12) and three plunger thrust measuring mechanisms. The cylinder (12) is provided with three penetrating measuring holes evenly spaced along its circumference. The three plunger thrust measuring mechanisms are respectively installed at the three measuring holes.

2. The plunger thrust measuring device for a drill bit guide drilling tool according to claim 1, characterized in that: The three plunger thrust measurement mechanisms respectively comprise thrust sensors (4) and force transmission barrier pistons (7); the three force transmission barrier pistons (7) are respectively installed in the three measuring holes and can respectively move along the radial direction of the cylinder (12); the three thrust sensors (4) are respectively mounted on the cylinder (12) and are respectively located on the outsides of the three force transmission barrier pistons (7); the three force transmission barrier pistons (7) can respectively squeeze the three thrust sensors (4) during the movement.

3. The plunger thrust measuring device for a drill bit guide drilling tool according to claim 2, characterized in that: Sealing rings (8) are respectively installed between the three force transmission blocking pistons (7) and the hole walls of the three measuring holes.

4. The plunger thrust measuring device for a drill bit guide drilling tool according to claim 2, characterized in that: The three thrust sensors (4) are respectively fixedly mounted on the cylinder (12) via brackets (3).

5. The device for measuring plunger thrust of a drill bit guide drilling tool according to claim 2, characterized in that: The three thrust sensors (4) are respectively connected to buffer components, and the three buffer components are respectively located between the three thrust sensors (4) and the three force transmission blocking pistons (7).

6. The device for measuring plunger thrust of a drill bit guide drilling tool according to claim 5, characterized in that: The three buffer assemblies respectively comprise a buffer screw (5) and a spring (6); one end of the three buffer screws (5) is respectively connected to the three thrust sensors (4); the three springs (6) are respectively located between the three thrust sensors (4) and the three force transmission blocking pistons (7), and two ends thereof are respectively abutted against the other ends of the three force transmission blocking pistons (7) and the three buffer screws (5).

7. The device for measuring plunger thrust of a drill bit guide drilling tool according to claim 6, characterized in that: The other ends of the three buffer screws (5) are respectively provided with an annular groove (13), and one ends of the three springs (6) respectively extend into the three annular grooves (13) and respectively abut against the groove bottoms of the three annular grooves (13).

8. The device for measuring plunger thrust of a drill bit guide drilling tool according to claim 6, characterized in that: One end of the three thrust sensors (4) is respectively provided with a screw hole, and the other ends of the three buffer screws (5) are respectively threadedly connected to the three screw holes.

9. The plunger thrust measuring device for a drill bit steering drilling tool according to any one of claims 1 to 8, characterized in that: A radial limiting component is also installed on the cylinder (12).

10. The plunger thrust measuring device for a drill bit steering drilling tool according to any one of claims 1 to 8, characterized in that: An axial limiting component is also installed on the cylinder (12).

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