CN219910741U - Gravity induction regulating valve for well deviation measurement - Google Patents

Abstract

The utility model discloses a gravity induction regulating valve for well inclination measurement, which relates to the technical field of well logging devices and includes a valve body with a valve body fluid inlet and a valve body fluid outlet. The valve body is provided with a connecting valve body fluid inlet and valve body. In the flow channel of the fluid outlet, the valve body is fixedly provided with a valve seat and a valve core that can rotate relative to the valve seat; the valve body is also provided with a biasing block accommodation chamber, which is sealed and has a biasing block inside, which can rotate relative to the valve. The body rotates, and the rotation center of the biased weight block is coaxial with the rotation center of the valve core, and the biased weight block is fixedly connected to the valve core; when the valve body tilts: the biased weight block can drive the valve core to rotate relative to the valve seat. Different from the existing technology, this regulating valve contains a closed off-weight block accommodation cavity. When the off-weight block rotates, it will not be impacted by the drilling fluid. It only swings freely under the action of gravity, making the induction of well deviation more stable.

Description

A gravity sensing regulating valve for well inclination measurement

Technical field

The utility model belongs to the technical field of well logging devices, and further relates to a gravity induction regulating valve for well inclination measurement.

Background technique

Inclinometer is an indispensable tool in drilling engineering, mainly divided into two types: electronic and mechanical inclinometer. Due to the complex and changeable underground conditions, mechanical inclinometers have the advantage of higher working reliability when facing harsh working conditions such as high temperature and high pressure.

Mechanical inclinometers have various structures. Representative inclinometer solutions include a mechanical wireless inclinometer disclosed in the Chinese invention patent application number CN200510042035.2, and China's application number CN202210516750.9 The invention patent discloses a mud pulse signal generating device and an inclinometer. The above-mentioned inclinometers use a purely mechanical structure to sense the well inclination angle by gravity, and use mud as a signal transmission medium to communicate with the ground. Among the two solutions disclosed in the two patents mentioned above, the latter solution has the advantages of a large inclination measurement range and no need to stop the pump during the inclination measurement operation.

In the inclinometer disclosed in the above application number CN202210516750.9, the specific device for sensing the well inclination angle is a flow control valve containing a biased weight block. The biased weight block is fixedly connected to the flow distribution valve core contained in the flow control valve, driving The flow distribution valve core rotates relative to the flow distribution valve seat to realize the regulation and control of the flow rate by the flow control valve. The flow rate output by the flow control valve is related to the sensed well inclination. The real-time well inclination angle can be determined and identified based on the drilling fluid flow rate output by the valve.

Utility model content

However, in the existing technology represented by the inclinometer disclosed in CN202210516750.9, the biased weight block used to sense the well inclination angle is directly exposed in the flow channel. In addition to being affected by gravity, the biased weight block is also directly affected by the drilling fluid. The impact and stress are complex, and it is difficult for the weighted block to remain stable during inclinometer measurement. To this end, the utility model provides a gravity induction regulating valve for well inclination measurement, which has the advantage of stabilizing the well inclination measurement process. This solution uses the following technical points to solve the problem:

A gravity induction regulating valve for well inclination measurement, including a valve body having a valve body fluid inlet and a valve body fluid outlet. The valve body is provided with a flow channel connecting the valve body fluid inlet and the valve body fluid outlet. The valve body A valve seat and a valve core that can rotate relative to the valve seat are fixedly provided; the valve body is also provided with a biased weight receiving cavity, which is sealed and has a biased weight block inside, and the biased weight block can rotate relative to the valve body. , the rotation center of the biased weight block is coaxial with the rotation center of the valve core, and the biased weight block is fixedly connected to the valve core; when the valve body is tilted: the biased weight block can drive the valve core to rotate relative to the valve seat.

As mentioned above, this application provides a gravity sensing regulating valve for well inclination measurement. Generally speaking, the valve body of this regulating valve has or is equipped with a valve body fluid inlet, a flow channel, a valve seat, a valve core and a valve body fluid outlet. , the valve core rotates relative to the valve seat to adjust the opening of the regulating valve. At the same time, the rotary valve core is fixedly connected to the eccentric weight block. Under the action of the eccentric moment of the eccentric weight block, the eccentric weight block drives the valve core to always point in the direction of gravity. After the gravity induction regulating valve is installed on the drilling tool, the valve body will work with the drilling tool. Common tilt. When the valve body, that is, the drilling tool, tilts, the valve core, which always points in the direction of gravity, will rotate relative to the valve body, thereby adjusting the flow rate. The flow rate output by the fluid outlet of the valve body is controlled by the valve core, and the rotation of the valve core is controlled by the weighted block. In this way, the real-time well inclination angle is reflected by the flow rate controlled by the device, thereby achieving the effect of measuring well inclination. , the valve core should be a rotary valve, such as a ball valve or butterfly valve. Different from the existing technology, the valve body is also provided with a closed off-weight block accommodation cavity, and the off-weight block is arranged in the accommodation cavity and deflected in the accommodation cavity. Since the accommodation cavity of the biased weight block is sealed, the biased weight block will not be impacted by the drilling fluid when rotating. It only swings freely under the action of gravity, making the induction of well deviation more stable. The gravity sensing regulating valve for well inclination measurement provided by this application has the advantage of stable inclination measurement process. The mechanical inclinometer installed and using this regulating valve can output a better inclination measurement signal than the existing technology.

Further technical solutions are:

The valve body includes an upper valve body and a lower valve body. An upper valve seat is provided on the inside of the upper valve body. A lower valve seat is provided on the inside of the lower valve body. The upper valve seat and the lower valve seat are enclosed to form a column. A surface-shaped valve seat, the upper valve body is provided with the valve body fluid inlet penetrating the inner and outer sides of the upper valve body, and the lower valve seat is provided with the valve body fluid outlet penetrating the inner and outer sides of the lower valve body; The valve core includes a sealing cylinder surface and a sealing end surface. The two sealing end surfaces are spaced apart to form the flow channel. A valve core fluid inlet and a valve core fluid outlet are provided on the sealing cylinder surface at intervals along the circumferential direction. When the valve core When rotating relative to the valve seat: the overlapping area of the valve core fluid inlet and the valve body fluid inlet changes. This feature provides a specific implementation of the regulating valve, that is, the valve body includes an upper and a lower valve body. The two valve bodies are enclosed to form a cylindrical valve seat and clamp the cylindrical valve seat. core. The upper valve body and the lower valve body can be connected by bolts to facilitate the assembly and disassembly of the valve core in the valve body. The valve core rotates in the valve seat to adjust the overlap area between the valve core fluid inlet and the valve body fluid inlet, thereby changing the size of the fluid flow area to achieve the effect of flow regulation. The fluid medium with a specific flow rate flowing in from the overlapping portion of the valve core fluid inlet and the valve body fluid inlet then enters the flow channel formed by the interval between the two sealing end faces, and flows out from the valve core fluid outlet and the valve body fluid outlet. The sealing end face and sealing cylinder face determine the flow direction of the mud, preventing the mud from flowing to other areas in the valve body and preventing the mud from interfering with the work of the partial weight block.

The sealing end surface and the inner surface of the valve body are enclosed to form the weight receiving cavity. This technical feature provides a specific implementation method of the biased weight receiving cavity. In addition to serving as the boundary of the flow channel, the sealing end face also becomes a component of the weight block accommodation cavity, making the structure of this solution more compact. One side of the sealing end face is the flow channel of the mud, and the other side is the accommodation cavity of the biased weight block. The sealing end face separates the flow area of the mud from the rotation area of the biased weight block, reducing the impact of the hydraulic impact of the mud on the biased weight block.

The biased weight block is fixedly arranged on the sealing end face and extends to the side away from the flow channel. The center of mass of the biased weight block is offset from the rotation axis of the valve core. This feature provides a specific implementation mode of the biased weight block. The biased weight block is fixed to the sealing end face, and its center of mass deviates from the rotation axis of the valve core to generate a deflection moment. The biased weighting block directly drives the sealing end face, sealing cylinder surface and valve core fluid inlet to rotate to achieve the functional effect of flow regulation.

In order to make the biased weight block have a larger volume and have a larger mass to bring about a more abundant deflection moment, it is set as follows: taking the normal plane of the rotation axis of the valve core as the cross section: the cross section of the biased weight block is a semicircle, with The center of the circle falls on the rotation axis of the valve core; the outer diameter of the biased weight block is the same as the outer diameter of the sealing cylinder. The normal plane of the valve core rotation axis refers to the plane perpendicular to the valve core rotation axis. In some embodiments, the regulating valve may also be provided with a rotating shaft and a bearing so that the valve core rotates relative to the valve seat more sensitively.

Taking the rotation axis of the valve core as the center: the circumferential angle between the valve body fluid inlet and the valve body fluid outlet is 180°. The circumferential angle mentioned in this feature refers to, on the normal plane of the valve core rotation axis, taking the projection of the valve core rotation axis on the normal plane as the center point, the line connecting the valve body fluid inlet and the center point and the valve body fluid outlet The angle between the line connecting the center point and the center point. This feature makes the flow inlet of the valve body and the flow outlet of the valve body face each other, and the flow flows from the inlet into the flow channel and directly flows out from the outlet without changing the flow direction. The specific position setting between the inlet and the outlet gives this regulating valve the advantage of small flow resistance.

The valve core fluid inlet includes: a first valve port, a second valve port, a third valve port and a fourth valve port opened sequentially along the circumferential direction of the sealing cylinder, and the four valve ports are arranged in a stepped manner; In the axial direction of the sealing cylinder: the widths of the four valve ports are different. This feature provides an implementation method of the valve core fluid inlet. The four valve ports are arranged in a stepped manner, which means that the four valve ports are connected end to end. No matter how many angles the valve core rotates within the adjustment range, the valve core fluid There is an overlap between the inlet and the valve body fluid inlet, so the measurement process is not interrupted. The stepped arrangement also means that the four valve ports are misaligned with each other in the axial direction of the sealing cylinder. At different rotation angles, different valve ports will overlap with the fluid inlet of the valve body, and the four valve ports are If the widths are different, the overlapping area of the valve core fluid inlet and the valve body fluid inlet will also be different under different rotation angles, thereby achieving the effect of flow control.

In order to enable the device to perform measurement work within the well inclination range of 0-90°, it is set as follows: with the rotation axis of the valve core as the center: between the top edge of the first valve port and the bottom edge of the fourth valve port. The circumferential angle between them is 90°.

The valve core fluid outlet completely covers the valve body fluid outlet, with the rotation axis of the valve core as the center: the circumferential angle between the top edge and the bottom edge of the valve core fluid outlet is 90°. This feature allows the overlapping area of the valve core fluid outlet and the valve body fluid outlet to remain unchanged during the inclination measurement process. The flow outlet part does not regulate the flow rate. This regulating valve only bears the flow rate from the valve core fluid inlet and the valve body fluid inlet. regulating effect. This regulating valve is simple and easy to control for flow adjustment.

In order to make the valve core more solid, a reinforced connecting rod is provided between the two sealing end surfaces.

The beneficial effects of this utility model are:

This application provides a gravity sensing regulating valve for well inclination measurement. What is different from the prior art is that the valve body of this regulating valve is provided with a closed eccentric weight block accommodation cavity, and the eccentric weight block is arranged in the accommodation cavity and deflected in the accommodation cavity. Since the accommodation cavity of the biased weight block is sealed, the biased weight block will not be impacted by the drilling fluid when rotating. It only swings freely under the action of gravity, making the induction of well deviation more stable. The gravity sensing regulating valve for well inclination measurement provided by this application has the advantage of stable inclination measurement process. The mechanical inclinometer installed and using this regulating valve can output a better inclination measurement signal than the existing technology.

Description of the drawings

The accompanying drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used to explain the present utility model together with the embodiments of the present utility model, and do not constitute a limitation of the present utility model.

Figure 1 is a schematic diagram of the overall three-dimensional explosion assembly of the utility model;

Figure 2 is an overall three-dimensional schematic diagram of the utility model;

Figure 3 is a schematic diagram of the overall two-dimensional cross-section of the utility model, and the cross-section coincides with the rotation axis of the valve core;

Figure 4 is a schematic diagram of the overall two-dimensional cross-section of the utility model. The cross-section is perpendicular to the rotation axis of the valve core to show the state of the device in a well deviation environment;

Figure 5 is a three-dimensional schematic diagram of the valve core of the present utility model;

Figure 6 is a three-dimensional cross-sectional view of the valve core of the present utility model;

In the figure: 1. Valve body; 101. Upper valve body; 102. Lower valve body; 103. Valve body fluid inlet; 104. Valve body fluid outlet; 2. Valve seat; 3. Valve core; 301. Sealing cylinder; 302. Sealing end face; 303. Valve core fluid inlet; 3031. First valve port; 3032. Second valve port; 3033. Third valve port; 3034. Fourth valve port; 304. Valve core fluid outlet; 305. Strengthening Connecting rod; 4. Flow channel; 5. Balancing cavity; 6. Balancing block; 7. Bolts; 8. Rotating shaft; 9. Bearing.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. For example, based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Example

As shown in Figure 1-6, a gravity induction regulating valve for well inclination measurement includes a valve body 1 having a valve body fluid inlet 103 and a valve body fluid outlet 104. The valve body 1 is provided with a connecting valve body fluid inlet 103 and a valve body fluid outlet 104. The flow channel 4 of the valve body fluid outlet 104, the valve body 1 is fixedly provided with a valve seat 2 and a valve core 3 that can rotate relative to the valve seat 2; the valve body 1 is also provided with an offset weight accommodation cavity 5, so The biased weight receiving cavity 5 is sealed and has a biased weight 6 inside. The biased weight 6 can rotate relative to the valve body 1. The rotation center of the biased weight 6 is coaxial with the rotation center of the valve core 3. The biased weight 6 Fixedly connected to the valve core 3; when the valve body 1 tilts: the biased weight 6 can drive the valve core 3 to rotate relative to the valve seat 2.

As mentioned above, this application provides a gravity induction regulating valve for well inclination measurement. Generally speaking, the valve body 1 of this regulating valve has or is installed with a valve body fluid inlet 103, a flow channel 4, a valve seat 2, and a valve core 3. And the valve body fluid outlet 104, the valve core 3 rotates relative to the valve seat 2 to adjust the opening of the regulating valve. At the same time, the rotary valve core 3 is fixedly connected to the biased weight block 6. Under the action of the eccentric moment of the biased weight block 6, the biased weight block 6 drives the valve core 3 to always point in the direction of gravity. After the gravity sensing regulating valve is installed on the drilling tool, The valve body 1 will tilt together with the drilling tool. When the valve body 1, that is, the drilling tool, tilts, the valve core 3, which always points in the direction of gravity, will rotate relative to the valve body 1, thereby adjusting the flow rate. The flow rate output by the fluid outlet 104 of the valve body is controlled by the valve core 3, and the rotation of the valve core 3 is controlled by the weight block 6. In this way, the real-time well inclination angle is reflected by the flow rate controlled by the device, thereby achieving measurement. For the effect of well deviation, the valve core 3 should be a rotary valve, such as a ball valve or butterfly valve. Different from the prior art, the valve body 1 is also provided with a closed eccentric weight receiving cavity 5, and the eccentric weight 6 is arranged in the accommodating cavity and deflected in the accommodating cavity. Since the biased weight block accommodation cavity 5 is sealed, the biased weight block 6 will not be impacted by the drilling fluid when rotating. It only swings freely under the action of gravity, and the induction of well deviation is more stable. The gravity sensing regulating valve for well inclination measurement provided by this application has the advantage of stable inclination measurement process. The mechanical inclinometer installed and using this regulating valve can output a better inclination measurement signal than the existing technology.

Further technical solutions are:

The valve body 1 includes an upper valve body 101 and a lower valve body 102. An upper valve seat is provided inside the upper valve body 101, and a lower valve seat is provided inside the lower valve body 102. The upper valve seat and the lower valve seat The seat encloses a cylindrical valve seat 2. The upper valve body 101 has a fluid inlet 103 penetrating the inside and outside of the upper valve body 101. The lower valve seat has a fluid inlet 103 penetrating the inside of the lower valve body 102. and the valve body fluid outlet 104 on the outside; the valve core 3 includes a sealing cylinder 301 and a sealing end surface 302. The two sealing end surfaces 302 are spaced apart to form the flow channel 4. The upper edge of the sealing cylinder 301 is along the circumference. A valve core fluid inlet 303 and a valve core fluid outlet 304 are provided at directional intervals. When the valve core 3 rotates relative to the valve seat 2: the overlapping area of the valve core fluid inlet 303 and the valve body fluid inlet 103 changes. This feature provides a specific implementation mode of the regulating valve, that is, the valve body 1 includes an upper and a lower valve body, and the two valve bodies are enclosed to form a cylindrical valve seat 2, and clamp the cylindrical valve seat 2. The spool 3. The upper valve body 101 and the lower valve body 102 can be connected by bolts 7 to facilitate the assembly and disassembly of the valve core 3 in the valve body 1 . The valve core 3 rotates in the valve seat 2 to adjust the overlapping area between the valve core fluid inlet 303 and the valve body fluid inlet 103, thereby changing the size of the fluid flow area to achieve the effect of flow adjustment. The fluid medium with a specific flow rate flowing in from the overlapping portion of the valve core fluid inlet 303 and the valve body fluid inlet 103 then enters the flow channel 4 formed between the two sealing end faces 302, and passes through the valve core fluid outlet 304 and the valve body fluid. Outflow from outlet 104. The sealing end face 302 and the sealing cylinder face 301 define the flow direction of the mud, preventing the mud from flowing to other areas in the valve body 1 and preventing the mud from interfering with the work of the weight block 6 .

The sealing end surface 302 and the inner surface of the valve body 1 are enclosed to form the weight receiving cavity 5 . This technical feature provides a specific implementation of the weight receiving cavity 5 . In addition to serving as the boundary of the flow channel 4, the sealing end face 302 also becomes an integral part of the weight receiving cavity 5, making the structure of this solution more compact. One side of the sealing end face 302 is the flow channel 4 of the mud, and the other side is the accommodation cavity 5 of the biased weight block. The sealing end face 302 separates the flow area of the mud from the rotation area of the biased weight block 6, thereby reducing the impact of the hydraulic impact of the mud on the biased weight block 6. Impact.

The weighted block 6 is fixedly disposed on the sealing end face 302 and extends to a side away from the flow channel 4 . The center of mass of the weighted block 6 is offset from the rotation axis of the valve core 3 . This feature provides a specific implementation of the weighted block 6 . The biased weight block 6 is fixed to the sealing end face 302, and its center of mass deviates from the rotation axis of the valve core 3 to generate a deflection moment. The biasing weight block 6 directly drives the sealing end face 302, the sealing cylinder 301 and the valve core fluid inlet 303 to rotate to achieve the functional effect of flow regulation.

In order to make the biased weight block 6 have a larger volume and have a larger mass to bring about a more abundant deflection moment, it is set as follows: taking the normal plane of the rotation axis of the valve core 3 as the cross section: the cross section of the biased weight block 6 is a semicircle shape, the center of which falls on the rotation axis of the valve core 3; the outer diameter of the weighted block 6 is the same as the outer diameter of the sealing cylinder 301. The normal plane of the rotation axis of the valve core 3 refers to the plane perpendicular to the rotation axis of the valve core 3. In some embodiments, the regulating valve can also be provided with a rotating shaft 8 and a bearing 9 so that the valve core 3 can rotate relative to the valve seat 2 more sensitively.

Taking the rotation axis of the valve core 3 as the center: the circumferential angle between the valve body fluid inlet 103 and the valve body fluid outlet 104 is 180°. The circumferential angle mentioned in this feature refers to, on the normal plane of the rotation axis of the valve core 3, taking the projection of the rotation axis of the valve core 3 on the normal plane as the center point, the line connecting the valve body fluid inlet 103 and the center point and the valve body The angle between the body fluid outlet 104 and the line connecting the center point. This feature makes the flow inlet of the valve body 1 and the flow outlet of the valve body 1 face each other, and the flow flows from the inlet into the flow channel 4 and directly flows out from the outlet without changing the flow direction. The specific position setting between the inlet and the outlet gives this regulating valve the advantage of small flow resistance.

The valve core fluid inlet 303 includes: a first valve port 3031, a second valve port 3032, a third valve port 3033 and a fourth valve port 3034 opened sequentially along the circumferential direction of the sealing cylinder 301. The four valve ports are It is arranged in a stepped manner; in the axial direction of the sealing cylinder 301: the widths of the four valve ports are different. This feature provides an implementation of the valve core fluid inlet 303. The four valve ports are arranged in a stepped manner, which means that the four valve ports are connected end to end. No matter how many angles the valve core 3 rotates within the adjustment range, the valve Both the core fluid inlet 303 and the valve body fluid inlet 103 have overlapping portions, so the measurement process will not be interrupted. The stepped arrangement also means that the four valve ports are misaligned with each other in the axial direction of the sealing cylinder 301. At different rotation angles, different valve ports will overlap with the valve body fluid inlet 103, and the four valve ports The widths of the ports are different, so the overlapping areas of the valve core fluid inlet 303 and the valve body fluid inlet 103 are also different at different rotation angles, thereby achieving the effect of flow control.

In order to enable the device to perform measurement work within the well inclination range of 0-90°, it is set as follows: with the rotation axis of the valve core 3 as the center: the top edge of the first valve port 3031 and the top edge of the fourth valve port 3034 The circumferential angle between the bases is 90°.

The valve core fluid outlet 304 completely covers the valve body fluid outlet 104, with the rotation axis of the valve core 3 as the center: the circumferential angle between the top edge and the bottom edge of the valve core fluid outlet 304 is 90°. This feature allows the overlapping area of the valve core fluid outlet 304 and the valve body fluid outlet 104 to remain unchanged during the inclination measurement process. The flow outlet part does not regulate the flow rate. This regulating valve only consists of the valve core fluid inlet 303 and the valve body fluid. The inlet 103 is responsible for flow regulation. This regulating valve is simple and easy to control for flow adjustment.

In order to make the valve core 3 stronger, a reinforcing connecting rod 305 is provided between the two sealing end surfaces 302 .

The above are the preferred embodiments of the present invention. Those skilled in the field of the present utility model can also make changes and modifications to the above-mentioned embodiments. Therefore, the present utility model is not limited to the above-mentioned specific embodiments. Anyone skilled in the art can Any obvious improvements, replacements or deformations made on the basis of the present utility model belong to the protection scope of the present utility model.

Claims (10)

1. A gravity induction regulating valve for well inclination measurement, characterized in that it includes a valve body (1) having a valve body fluid inlet (103) and a valve body fluid outlet (104), and the valve body (1) has an internal There is a flow channel (4) connecting the valve body fluid inlet (103) and the valve body fluid outlet (104). The valve body (1) is fixedly provided with a valve seat (2) and a rotatable valve seat (2). Valve core (3); the valve body (1) is also provided with a biased weight receiving cavity (5). The biased weight containing cavity (5) is sealed and has a biased weight block (6) inside. The biased weight block (5) is 6) It can rotate relative to the valve body (1), the rotation center of the biased weight block (6) is coaxial with the rotation center of the valve core (3), and the biased weight block (6) is fixedly connected to the valve core (3); when When the valve body (1) is tilted: the biased weight block (6) can drive the valve core (3) to rotate relative to the valve seat (2). 2. A gravity sensing regulating valve for well inclination measurement according to claim 1, characterized in that the valve body (1) includes an upper valve body (101) and a lower valve body (102), and the upper valve body There is an upper valve seat on the inside of the body (101), and a lower valve seat on the inside of the lower valve body (102). The upper valve seat and the lower valve seat enclose to form a cylindrical valve seat (2). The upper valve body (101) has the valve body fluid inlet (103) penetrating the inside and outside of the upper valve body (101), and the lower valve seat has the valve body penetrating the inside and outside of the lower valve body (102). body fluid outlet (104); the valve core (3) includes a sealing cylinder (301) and a sealing end face (302), and the two sealing end faces (302) are spaced apart to form the flow channel (4). The cylindrical surface (301) is provided with a valve core fluid inlet (303) and a valve core fluid outlet (304) spaced apart along the circumferential direction. When the valve core (3) rotates relative to the valve seat (2): the valve core fluid inlet (303) The overlapping area with the valve body fluid inlet (103) changes. 3. A gravity induction regulating valve for well inclination measurement according to claim 2, characterized in that the sealing end face (302) and the inner surface of the valve body (1) are enclosed to form the biased weight receiving cavity ( 5). 4. A gravity induction regulating valve for well deviation measurement according to claim 3, characterized in that the biased weight block (6) is fixedly arranged on the sealing end face (302) and faces away from the flow channel (4). Extending sideways, the center of mass of the biased weight block (6) is offset from the rotation axis of the valve core (3). 5. A gravity induction regulating valve for well deviation measurement according to claim 4, characterized in that, taking the normal plane of the rotation axis of the valve core (3) as the cross section: the cross section of the biased weight block (6) is half It is circular, with its center falling on the rotation axis of the valve core (3); the outer diameter of the biased weight block (6) is the same as the outer diameter of the sealing cylinder (301). 6. A gravity induction regulating valve for well deviation measurement according to claim 2, characterized in that, with the rotation axis of the valve core (3) as the center: the valve body fluid inlet (103) and the valve body fluid outlet The circumferential angle between (104) is 180°. 7. A gravity sensing regulating valve for well inclination measurement according to claim 6, characterized in that the valve core fluid inlet (303) includes: openings sequentially along the circumferential direction of the sealing cylinder (301). The first valve port (3031), the second valve port (3032), the third valve port (3033) and the fourth valve port (3034) are arranged in a stepped manner; on the axis of the sealing cylinder (301) In the direction: the widths of the four valve ports are different. 8. A gravity induction regulating valve for well deviation measurement according to claim 7, characterized in that, with the rotation axis of the valve core (3) as the center: the top edge of the first valve port (3031) and the third The circumferential angle between the bottom edges of the four valve ports (3034) is 90°. 9. A gravity induction regulating valve for well deviation measurement according to claim 8, characterized in that the valve core fluid outlet (304) completely covers the valve body fluid outlet (104), with the valve core (3 ) is the center of rotation: the circumferential angle between the top edge and the bottom edge of the valve core fluid outlet (304) is 90°. 10. A gravity induction regulating valve for well inclination measurement according to claim 2, characterized in that a reinforced connecting rod (305) is provided between the two sealing end surfaces (302).