Single-cylinder multi-well occupied drilling tool inclination measuring device and inclination measuring method thereof

Abstract

The invention relates to the technical field of offshore oil drilling engineering, and provides a single-barrel multi-well occupied drilling tool inclination measuring device and an inclination measuring method.The single-barrel multi-well occupied drilling tool inclination measuring device comprises an occupied drilling tool plug internally provided with a cavity; the inclinometry plumb bob structure comprises an inclinometry plumb bob, a switching steel wire and a position control block, and the inclinometry plumb bob is installed at one end of the switching steel wire and located in the cavity; the other end of the switching steel wire is positioned in the drill rod drift diameter; the position control block is arranged on the side, close to the drill rod, of the cavity and internally provided with a center through hole. The inclination measuring pricking needle is arranged on the side, away from the drill rod, of the cavity and right faces the drift diameter center of the drill rod of the occupied drilling tool; the transfer steel wire penetrates through the center through hole and can move in the center through hole in a reciprocating mode, and transverse shaking of the transfer steel wire is limited through the center through hole. The inclinometry plumb bob can be driven by the transfer steel wire to reciprocate between the position control block and the inclinometry pricking needle, so that the inclinometry plumb bob collides with the inclinometry pricking needle, a collision mark is formed at the bottom of the inclinometry plumb bob, and whether the occupied drilling tool deflects or not is judged through the collision mark.

Description

Technical Field

[0001] The invention relates to the technical field of offshore oil drilling engineering, and in particular to a single-tube multi-well occupancy drilling tool inclination measuring device and an inclination measuring method thereof. Background Art

[0002] The well slot resources in offshore oil field exploration and development are particularly precious. With the continuous acceleration of the process of rolling development, the slots are in short supply and the pressure is increasing year by year. The single-barrel multi-well technology can double the number of well slots through technical means. It has been gradually promoted and widely used in recent years. The single-barrel multi-well surface drilling technology with the occupier drilling tool method is the mainstream method. The key point of the technology is that when the first well is implemented in the water-proof casing, other wells are occupied by lowering the occupier drilling tool. At present, the conventional occupier drilling tool consists of a plug, an occupier string, and a hanger. After the occupier drilling tool is lowered, it is impossible to measure and monitor whether it is effectively occupied. For example, whether the occupier drilling tool is displaced during the drilling, casing, and cementing of the first well. If the cementing operation of the surface casing of the first well is completed when the occupier drilling tool is displaced, the space of the adjacent well is occupied, and the remaining wellbore operations cannot be carried out normally. Therefore, how to monitor the deflection and displacement of the occupier drilling tool during its occupation has become an urgent problem to be solved. Summary of the invention

[0003] The purpose of the present invention is to solve at least one technical problem in the background technology and to provide a single-tube multi-well occupation drilling tool inclination measuring device.

[0004] To achieve the above object, the present invention provides a single-tube multi-well occupation drilling tool inclination measuring device, comprising:

[0005] The space-occupying drilling tool plug is coaxially installed at the end of the drilling rod of the space-occupying drilling tool, and a cavity communicating with the bore of the drilling rod is provided inside the plug;

[0006] The inclinometer plumb bob structure comprises an inclinometer plumb bob, a transfer wire and a position control block, wherein the inclinometer plumb bob is installed at one end of the transfer wire and is located in the cavity; the other end of the transfer wire is located in the bore of the drill pipe;

[0007] The position control block is arranged on one side of the cavity close to the drill rod, and a vertical central through hole is arranged inside the position control block;

[0008] The inclination measuring needle is arranged on a side of the cavity away from the drill rod and facing the center of the drill rod diameter of the placeholder drilling tool;

[0009] The transfer steel wire passes through the central through hole and can move back and forth in the central through hole, and the central through hole limits the lateral shaking of the transfer steel wire; the inclinometer plumb bob can move back and forth between the control block and the inclinometer needle driven by the transfer steel wire, thereby achieving collision with the inclinometer needle, forming an impact mark at the bottom of the inclinometer plumb bob, and judging whether the occupier drilling tool is deflected by the impact mark.

[0010] According to one aspect of the present invention, the placeholder drilling tool plug comprises: a plug body and a transition part;

[0011] The adapter is screwed to the end of the drill rod of the placeholder drilling tool;

[0012] The plug body is connected to the adapter, and its outer diameter is larger than the outer diameter of the adapter;

[0013] The plug body is provided with a plurality of flushing channels which are connected to the cavity and penetrate through the wall thickness thereof.

[0014] According to one aspect of the present invention, the inclinometer plumb bob structure further includes: a limit block, which is arranged on the adapter wire and located on the side of the control block away from the inclinometer plumb bob, for limiting the distance between the control block and the inclinometer plumb bob.

[0015] According to one aspect of the present invention, the inclinometer plumb bob structure further includes: a connection lock, which is a threaded lock, and is arranged at the other end of the transition wire for connecting the feed wire.

[0016] According to one aspect of the present invention, the position control block overlaps the cavity inside the adapter, a limiting step is provided on the inner wall of the adapter, and a limiting boss overlapping the limiting step is provided on the outer wall of the position control block.

[0017] According to one aspect of the present invention, a needle mounting screw hole is provided at the bottom center of the placeholder drill plug, the needle mounting screw hole is connected to the cavity, and the inclination measuring needle is screwed at the needle mounting screw hole.

[0018] According to one aspect of the present invention, the inclination measuring needle comprises: a mounting screw and a needle body;

[0019] The lancet body is mounted at the center of one side of the mounting screw facing the cavity;

[0020] The mounting screw rod is screwed to the puncture needle mounting screw hole.

[0021] According to one aspect of the present invention, the inclinometer plumb bob comprises: a counterweight steel body and a lead body;

[0022] The counterweight steel body is installed at the bottom end of the transition steel wire;

[0023] The lead body is arranged at the bottom end of the counterweight steel body.

[0024] To achieve the above object, the present invention further provides a method for measuring inclination of a staking drilling tool according to the above-mentioned single-tube multi-well staking drilling tool inclination measuring device, comprising:

[0025] Install the occupier drilling tool plug at the bottom end of the occupier drilling tool drill pipe, and lower the occupier drilling tool plug into the well along with the occupier drilling tool drill pipe;

[0026] Connect the inclinometer plumb structure with the delivery wire, and lower the inclinometer plumb structure through the delivery wire from the top of the wellhead occupies drilling tool;

[0027] When the inclinometer plumb structure is lowered to a first preset distance from the inclinometer needle, the inclinometer plumb structure is lifted up by the first preset distance, and then the inclinometer plumb structure is quickly lowered by a second preset distance, so that the inclinometer plumb structure is quickly and fully lowered to the bottom and fully collides with the inclinometer needle;

[0028] Lift out the incline plumb bob structure by feeding in steel wire;

[0029] Measure the center offset distance between the impact mark at the bottom of the inclinometer plumb bob structure and the center of the bottom end face of the inclinometer plumb bob structure;

[0030] The following formula is used to calculate the deflection angle α of the occupied drilling tool:

[0031]

[0032] Where:

[0033] L is the center offset distance between the impact mark at the bottom of the inclinometer plumb structure and the center of the bottom end face of the inclinometer plumb structure;

[0034] H is the distance between the bottom of the control block and the impact mark;

[0035] α is the deflection angle of the drilling tool.

[0036] According to one scheme of the present invention, a single-barrel multi-well occupier drilling tool inclinometer comprises: an occupier drilling tool plug, which is coaxially installed at the end of the occupier drilling tool drill pipe, and is provided with a cavity connected to the drill pipe diameter; an inclinometer plumb structure, which comprises an inclinometer plumb, a switching wire and a position control block, the inclinometer plumb is installed at one end of the switching wire and is located in the cavity; the other end of the switching wire is located in the drill pipe diameter; the position control block is arranged on a side of the cavity close to the drill pipe, and is provided with a vertical center through hole; an inclinometer needle is arranged on a side of the cavity away from the drill pipe and is directly opposite to the center of the drill pipe diameter of the occupier drilling tool; the switching wire passes through the center through hole and can move back and forth in the center through hole, and the switching wire is restricted from shaking horizontally by the center through hole; the inclinometer plumb can move back and forth between the position control block and the inclinometer needle driven by the switching wire, thereby realizing collision with the inclinometer needle, forming an impact mark at the bottom of the inclinometer plumb, and judging whether the occupier drilling tool is deflected by the impact mark. With such an arrangement, the inclinometer plumb bob can be accommodated in the cavity in the placeholder drill plug, and the control block can be used to ensure that the inclinometer plumb bob does not shake laterally, thereby ensuring its lateral position accuracy. The inclinometer plumb bob can be moved back and forth in the vertical direction by controlling the feeding wire and the switching wire. The movement of the inclinometer plumb bob can be controlled to achieve the collision between the inclinometer plumb bob and the inclinometer needle, so that the inclinometer needle can form an impact mark on the bottom of the inclinometer plumb bob. The impact mark can be used to determine whether the placeholder drill is deflected, and the specific angle of the deflection can be determined by calculation.

[0037] According to one solution of the present invention, the inclinometer plumb structure further includes: a limit block, which is arranged on the transfer wire and located on the side of the position control block away from the inclinometer plumb, and is used to limit the distance between the position control block and the inclinometer plumb. In this way, the distance between the position control block and the inclinometer plumb can be limited by the limit block, ensuring that the distance between the position control block and the inclinometer plumb is within a reasonable controlled range, and effectively avoiding the problem of reduced inclinometer accuracy caused by the excessive distance between the position control block and the inclinometer plumb.

[0038] According to one solution of the present invention, the inclinometer plumb structure further includes: a connection lock, which is a threaded lock, and is arranged at the other end of the transfer wire, and is used to connect the feed wire. Such arrangement can facilitate connection with the external feed wire through the connection lock, so that the inclinometer plumb structure can be sent into the underground occupant drilling tool as a whole through the feed wire to perform inclinometer work, making installation quick and convenient, and effectively improving operation efficiency.

[0039] According to one solution of the present invention, the position control block overlaps the corresponding part of the cavity inside the adapter, the inner wall of the adapter is provided with a position limiting step, and the outer wall of the position control block is provided with a position limiting boss overlapped with the position limiting step. In this way, the position control block can be clamped with the position limiting step on the inner wall of the adapter through the position limiting boss provided thereon, so that when the inclination plumb structure is lowered, the position control block can be smoothly clamped at the position limiting step, thereby ensuring that the position control block is concentric with the placeholder drill plug and the placeholder drill rod, and then the transfer wire and the inclination plumb at the end of the transfer wire are limited by the position control block to ensure its plumb state and inclination accuracy.

[0040] According to one solution of the present invention, a needle mounting screw hole is provided at the bottom center of the placeholder drill plug, the needle mounting screw hole is connected to the cavity, and the inclination needle is screwed at the needle mounting screw hole. With such a configuration, the inclination needle can be stably and securely mounted through the needle mounting screw hole, ensuring the stability and centering of the inclination needle, ensuring that the inclination needle will not deviate in attitude during the collision with the inclination plumb bob, and ensuring the inclination measurement accuracy.

[0041] According to one solution of the present invention, the inclinometer plumb bob includes: a weighted steel body and a lead body; the weighted steel body is installed at the bottom end of the transfer wire; the lead body is arranged at the bottom end of the weighted steel body. In this way, gravity drooping can be formed by the weighted steel body and the lead body to ensure a vertical state and inclinometer accuracy. Moreover, the lead body has strong plasticity, so when the needle body and the lead body collide with each other, the needle body can penetrate into the lead body, forming a clear and definite impact mark that can accurately obtain the size parameters, thereby ensuring the inclinometer accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A diagram schematically showing a use state of a single-barrel multi-well occupation drilling tool inclination measuring device according to an embodiment of the present invention;

[0043] Figure 2 A schematic diagram showing the structural arrangement of an occupier drilling tool plug of a single-tube multi-well occupier drilling tool inclination measurement device according to an embodiment of the present invention;

[0044] Figure 3 A schematic diagram showing the structural arrangement of an inclinometer plumb structure of a single-barrel multi-well occupation drilling tool inclinometer according to an embodiment of the present invention;

[0045] Figure 4 A diagram schematically showing a collision state between an inclinometer plumb bob and an inclinometer needle according to an embodiment of the present invention;

[0046] Figure 5 A schematic diagram showing an impact mark formed at the bottom of an inclinometer plumb bob according to an embodiment of the present invention;

[0047] Figure 6The structural arrangement diagram of the inclination measuring needle according to one embodiment of the present invention is schematically shown. DETAILED DESCRIPTION

[0048] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the present invention, rather than implying any limitation on the scope of the present invention.

[0049] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0050] Figure 1 A diagram schematically showing a use state of a single-barrel multi-well occupation drilling tool inclination measuring device according to an embodiment of the present invention; Figure 2 A schematic diagram showing the structural arrangement of an occupier drilling tool plug of a single-tube multi-well occupier drilling tool inclination measurement device according to an embodiment of the present invention; Figure 3 The structural arrangement diagram of the inclinometer plumb structure of the single-tube multi-well occupancy drilling tool inclinometer according to one embodiment of the present invention is schematically shown. Figure 1-Figure 3 As shown, in this embodiment, the single-tube multi-well occupation drilling tool inclinometer device includes:

[0051] The placeholder drilling tool plug 1 is coaxially mounted on the end of the placeholder drilling tool drill rod 21, and has a cavity 2 in the interior thereof that communicates with the bore of the drill rod;

[0052] The inclinometer plumb bob structure 3 comprises an inclinometer plumb bob 4, a transfer wire 5 and a position control block 6. The inclinometer plumb bob 4 is installed at one end of the transfer wire 5 and is located in the cavity 2. The other end of the transfer wire 5 is located in the bore of the drill pipe.

[0053] The position control block 6 is arranged on one side of the cavity 2 close to the drill rod, and a vertical central through hole 7 is arranged inside the position control block 6;

[0054] The inclination measuring needle 8 is arranged on the side of the cavity 2 away from the drill rod and facing the center of the drill rod diameter of the placeholder drilling tool;

[0055] The transfer wire 5 passes through the central through hole 7 and can move back and forth in the central through hole 7, and the central through hole 7 limits the lateral shaking of the transfer wire 5; the inclinometer plumb bob 4 can move back and forth between the position control block 6 and the inclinometer needle 8 driven by the transfer wire 5, thereby realizing the collision with the inclinometer needle 8, forming an impact mark at the bottom of the inclinometer plumb bob 4, and judging whether the occupant drilling tool is deflected by the impact mark. In this embodiment, the collision between the inclinometer plumb bob 4 and the inclinometer needle 8 is as follows: Figure 4 As shown, the impact mark 20 is as shown in Figure 5 shown.

[0056] As arranged above, the cavity 2 in the placeholder drill plug 1 can accommodate the inclinometer plumb bob 4, and the control block 6 can be used to ensure that the inclinometer plumb bob 4 does not shake laterally, thereby ensuring its lateral position accuracy. By controlling the feeding wire 22 and the switching wire 5, the inclinometer plumb bob 4 can be reciprocated in the vertical direction. By controlling the movement of the inclinometer plumb bob 4, the collision between the inclinometer plumb bob 4 and the inclinometer needle 8 can be achieved, so that the inclinometer needle 8 can form an impact mark on the bottom of the inclinometer plumb bob 4. By using the impact mark, it can be determined whether the placeholder drill is deflected, and the specific angle of the deflection can be known by calculation.

[0057] Furthermore, if Figure 1 and Figure 2 As shown, in this embodiment, the placeholder drilling tool plug 1 includes: a plug body 9 and a connecting portion 10;

[0058] The adapter 10 is screwed to the end of the drill rod 21 of the occupier drilling tool;

[0059] The plug body 9 is connected to the adapter part 10, and its outer diameter is larger than the outer diameter of the adapter part 10;

[0060] The plug body 9 is provided with a plurality of flushing channels 23 that are connected to the cavity 2 and penetrate the wall thickness thereof. Figure 1 and Figure 2 As shown, four flushing channels 23 with a diameter of 25 mm are evenly distributed on the upper and lower parts of the plug body 9. This arrangement allows the drilling fluid injected through the placeholder drill rod 21 to be ejected through the multiple flushing channels provided on the plug body 9, thereby flushing the area around the placeholder drill.

[0061] Furthermore, if Figure 1 and Figure 3 As shown, in this embodiment, the inclinometer plumb structure 3 further includes: a limit block 11, which is arranged on the adapter wire 5 and located on the side of the position control block 6 away from the inclinometer plumb 4, and is used to limit the distance between the position control block 6 and the inclinometer plumb 4. In this way, the distance between the position control block 6 and the inclinometer plumb 4 can be limited by the limit block 11, ensuring that the distance between the position control block 6 and the inclinometer plumb 4 is within a reasonable controlled range, and effectively avoiding the problem of reduced inclinometer accuracy due to the excessive distance between the position control block 6 and the inclinometer plumb 4.

[0062] Furthermore, if Figure 1 and Figure 3As shown, in this embodiment, the inclinometer plumb structure 3 further includes: a connection lock 12, which is a threaded lock, and is arranged at the other end of the transfer wire 5, and is used to connect the feed wire. In this way, the connection lock 12 can be conveniently connected to the external feed wire, so that the inclinometer plumb structure 3 can be sent into the underground occupant drilling tool as a whole through the feed wire to perform inclinometer work, making the installation quick and convenient, and effectively improving the operation efficiency.

[0063] Furthermore, if Figure 1-Figure 3 As shown, in this embodiment, the position control block 6 overlaps the corresponding part of the cavity 2 inside the adapter 10, and a limiting step 13 is provided on the inner wall of the adapter 10, and a limiting boss 14 overlapping the limiting step 13 is provided on the outer wall of the position control block 6. In this way, the position control block 6 can be clamped with the limiting step 13 on the inner wall of the adapter 10 through the limiting boss 14 provided thereon, so that when the inclination plumb structure is lowered, the position control block 6 can be smoothly clamped at the limiting step 13, thereby ensuring that the position control block 6 is concentric with the occupier drilling tool plug 1 and the occupier drilling tool drill rod, and then the transfer wire 5 and the inclination plumb 4 at the end of the transfer wire 5 are limited by the position control block 6 to ensure its plumb state and inclination measurement accuracy.

[0064] Furthermore, if Figure 1 and Figure 2 As shown, in this embodiment, a needle mounting screw hole 15 is provided at the bottom center of the placeholder drill plug 1, the needle mounting screw hole 15 is connected to the cavity 2, and the inclination needle 8 is screwed at the needle mounting screw hole 15. In this way, the inclination needle 8 can be stably and securely mounted through the needle mounting screw hole 15, ensuring the stability and centering of the inclination needle 8, ensuring that the inclination needle 8 will not deviate in posture during the collision with the inclination plumb bob 4, and ensuring the inclination measurement accuracy.

[0065] Further, Figure 6 The structural arrangement diagram of the inclination needle according to one embodiment of the present invention is schematically shown. Figure 6 As shown, in this embodiment, the inclination needle 8 includes: a mounting screw 16 and a needle body 17;

[0066] The needle body 17 is mounted at the center of the side of the mounting screw 16 facing the cavity 2;

[0067] The mounting screw rod 16 is screwed with the thorn mounting screw hole 15. In this way, the mounting screw rod 16 can be stably mounted on the thorn mounting screw hole 15, and the thorn body 17 can be stably supported.

[0068] Furthermore, if Figure 3 As shown, in this embodiment, the inclinometer plumb bob 4 includes: a counterweight steel body 18 and a plumb body 19;

[0069] The counterweight steel body 18 is installed at the bottom end of the transfer wire 5;

[0070] The lead body 19 is arranged at the bottom of the weighted steel body 18. In this way, the weighted steel body 18 and the lead body 19 can form a gravity droop, thereby ensuring a vertical state and ensuring the inclination measurement accuracy. Moreover, the lead body 19 has strong plasticity, so when the needle body 17 and the lead body 19 collide with each other, the needle body 17 can penetrate into the lead body 19, forming a clear and definite impact mark that can accurately obtain the size parameters, thereby ensuring the inclination measurement accuracy.

[0071] Furthermore, in order to achieve the above-mentioned purpose, the present invention also provides a method for measuring inclination of an occupied drilling tool according to the above-mentioned single-tube multi-well occupied drilling tool inclination measuring device, comprising:

[0072] Install the occupier drilling tool plug 1 at the bottom end of the occupier drilling tool drill pipe, and lower the occupier drilling tool plug 1 into the well along with the occupier drilling tool drill pipe;

[0073] Connect the inclinometer plumb structure 3 to the delivery wire, and lower the inclinometer plumb structure 3 through the delivery wire from the top of the wellhead position drilling tool;

[0074] The inclinometer plumb bob structure 3 is quickly lowered to 2 meters before the designed depth, and then the inclinometer plumb bob structure 3 is lowered at a uniform speed until the distance between the inclinometer plumb bob structure 3 and the inclinometer needle 8 is a first preset distance (e.g., 0.5 meters), and then the inclinometer plumb bob structure 3 is lifted up by the first preset distance (e.g., 0.5 meters), and then the inclinometer plumb bob structure 3 is quickly lowered to the bottom quickly and fully collided with the inclinometer needle 8;

[0075] Lift out the incline plumb bob structure 3 by feeding in the steel wire 22;

[0076] like Figure 5 As shown, the center offset distance L between the impact mark 20 at the bottom of the inclinometer plumb structure 3 and the center of the bottom end surface of the inclinometer plumb structure 3 is measured;

[0077] The following formula is used to calculate the deflection angle α of the occupied drilling tool:

[0078]

[0079] Where:

[0080] L is the center offset distance between the impact mark 20 at the bottom of the inclinometer plumb structure 3 and the center of the bottom end surface of the inclinometer plumb structure 3;

[0081] H is the distance between the bottom of the control block and the impact mark, such as Figure 4 As shown;

[0082] α is the deflection angle of the drilling tool.

[0083] According to the above solution of the present invention, the present invention can obtain the following beneficial effects:

[0084] (1) The principle is simple, the processing is convenient, and the investment cost is low.

[0085] (2) The use process is simple and practical, avoiding the risks of conventional placeholder drilling tools being unable to monitor deflection, the displacement of placeholder drilling tools resulting in the occupation of well space, and the scrapping of slots.

[0086] (4) The bevel needle is made of high-strength steel, which can effectively leave marks on the highly plastic lead material.

[0087] (5) The upper part of the inclinometer plumb bob is designed with a counterweight steel body to provide sufficient gravity hammer impact force. The lower part is designed to be made of lead material with strong plasticity. Lead printing is widely used in drilling tool salvage operations and is technically reliable.

[0088] (6) The internal design of the space-occupying drill plug has a large free chamber, which can allow the inclinometer plumb bob to freely drop the hammer at different deflection angles without being disturbed by the inner wall.

[0089] (7) Inclination measurement is simple to operate. It only requires lowering a plumb bob using a steel wire at the wellhead. It is highly efficient and flexible.

[0090] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. Single-tube multi-well occupation drilling tool inclination measuring device, characterized in that: include: A placeholder drilling tool plug (1) is coaxially mounted on the end of a drill rod of the placeholder drilling tool, and is provided with a cavity (2) in the interior thereof that communicates with the bore of the drill rod; The inclinometer plumb bob structure (3) comprises an inclinometer plumb bob (4), a transfer wire (5) and a position control block (6); the inclinometer plumb bob (4) is installed at one end of the transfer wire (5) and is located in the cavity (2); the other end of the transfer wire (5) is located in the bore of the drill pipe; The position control block (6) is arranged on a side of the cavity (2) close to the drill rod, and a vertical central through hole (7) is provided inside the position control block; The inclination measuring needle (8) is arranged on a side of the cavity (2) away from the drill rod and facing the center of the drill rod diameter of the placeholder drilling tool; The transfer steel wire (5) passes through the central through hole (7) and can move back and forth in the central through hole (7), and the central through hole (7) limits the lateral shaking of the transfer steel wire (5); the inclinometer plumb bob (4) can move back and forth between the position control block (6) and the inclinometer needle (8) driven by the transfer steel wire (5), thereby achieving collision with the inclinometer needle (8), forming an impact mark at the bottom of the inclinometer plumb bob (4), and judging whether the occupant drilling tool is deflected by the impact mark.

2. The single-tube multi-well occupation drilling tool inclinometer according to claim 1, characterized in that: The place-occupying drilling tool plug (1) comprises: a plug body (9) and a connecting portion (10); The adapter (10) is threadedly connected to the end of the drill rod of the space-occupying drilling tool; The plug body (9) is connected to the adapter (10), and its outer diameter is larger than the outer diameter of the adapter (10); The plug body (9) is provided with a plurality of flushing channels (23) which are connected to the cavity (2) and penetrate the wall thickness thereof.

3. The single-tube multi-well occupation drilling tool inclinometer according to claim 1, characterized in that: The inclinometer plumb bob structure (3) further comprises: a limit block (11), wherein the limit block (11) is arranged on the transfer wire (5) and is located on a side of the position control block (6) away from the inclinometer plumb bob (4), and is used to limit the distance between the position control block (6) and the inclinometer plumb bob (4).

4. The single-tube multi-well occupation drilling tool inclinometer according to claim 1, characterized in that: The inclinometer plumb bob structure (3) further comprises: a connection lock (12), wherein the connection lock (12) is a thread lock, and the connection lock (12) is arranged at the other end of the transfer wire (5) and is used for connecting the feeding wire.

5. The single-tube multi-well occupation drilling tool inclinometer device according to claim 2, characterized in that: The position control block (6) is overlapped at the cavity (2) inside the transition part (10), a position limiting step (13) is provided on the inner wall of the transition part (10), and a position limiting boss (14) overlapped with the position limiting step (13) is provided on the outer wall of the position control block (6).

6. The single-tube multi-well occupation drilling tool inclinometer device according to claim 1, characterized in that: A needle mounting screw hole (15) is provided at the bottom center of the placeholder drill plug (1), the needle mounting screw hole (15) is connected to the cavity (2), and the inclination measuring needle (8) is screwed to the needle mounting screw hole (15).

7. The single-tube multi-well occupation drilling tool inclinometer device according to claim 6, characterized in that: The inclination measuring needle (8) comprises: a mounting screw (16) and a needle body (17); The puncture needle body (17) is installed at the center of one side of the installation screw (16) facing the cavity (2); The mounting screw rod (16) is threadedly connected to the puncture needle mounting screw hole (15).

8. The single-tube multi-well occupation drilling tool inclinometer according to any one of claims 1 to 7, characterized in that: The inclinometer plumb bob (4) comprises: a counterweight steel body (18) and a lead body (19); The counterweight steel body (18) is installed at the bottom end of the transition steel wire (5); The lead body (19) is arranged at the bottom end of the counterweight steel body (18).

9. The method for measuring inclination of a single-tube multi-well occupier drilling tool according to any one of claims 1 to 8, characterized in that: include: Installing the occupier drilling tool plug (1) at the bottom end of the occupier drilling tool drill pipe, and lowering the occupier drilling tool plug (1) into the well site along with the occupier drilling tool drill pipe; Connecting the inclinometer plumb bob structure (3) to the delivery wire, and lowering the inclinometer plumb bob structure (3) through the delivery wire from the top of the wellhead occupies drilling tool; When the inclinometer plumb structure (3) is lowered to a first preset distance from the inclinometer needle (8), the inclinometer plumb structure (3) is lifted up by the first preset distance, and then the inclinometer plumb structure (3) is quickly lowered by a second preset distance, so that the inclinometer plumb structure (3) is quickly and fully lowered to the bottom and fully collides with the inclinometer needle (8); The incline plumb bob structure (3) is pulled out by feeding a steel wire; Measuring the center offset distance between the impact mark at the bottom of the inclinometer plumb bob structure (3) and the center of the bottom end face of the inclinometer plumb bob structure (3); The following formula is used to calculate the deflection angle α of the occupied drilling tool: Where: L is the center offset distance between the impact mark at the bottom of the inclinometer plumb bob structure (3) and the center of the bottom end face of the inclinometer plumb bob structure (3); H is the distance between the bottom of the control block and the impact mark; α is the deflection angle of the drilling tool.

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