Bidirectional torque guiding shoe and using method

Abstract

The invention belongs to the technical field of oil field machining, and particularly provides a two-way torque guiding shoe and a using method, the two-way torque guiding shoe comprises a sleeve connecting part, a counter-acting force circulating sleeve, a center shaft and a counter-acting force circulating sleeve head, and the sleeve connecting part, the counter-acting force circulating sleeve and the counter-acting force circulating sleeve head are sequentially connected to the outer side of the center shaft in a sleeving mode from left to right. The problem that a casing pipe is difficult to run due to borehole sand setting and diameter shrinkage is solved, bidirectional rotation of the guiding shoe is achieved, sticking and clamping friction caused by sand setting in the spiral track direction of a drill bit in the casing pipe running process is reduced, sand clamping caused by low circulation efficiency in the casing pipe running process is reduced, the flushing efficiency of sand setting in a well cementation annulus is improved, and the well cementation annulus running efficiency is improved. The filling efficiency of a cement slurry system in a spiral channel is improved, and the cementing quality of a well cementation second interface is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oil field mechanical processing, and in particular relates to a bidirectional torque guide shoe and a use method thereof. Background Art

[0002] During cementing of horizontal wells in Changqing Oilfield, it is difficult to run casing due to the narrow wellbore gap, irregular wellbore trajectory, and a lot of sand at the bottom. During cementing, the casing sinks to the bottom close to the edge, the cementing displacement efficiency is low, and turbulence cannot be formed, resulting in poor filling effect of cement slurry on the annulus. The existing common hydraulic rotary guide shoes are all unidirectional rotation. Due to the presence of wellbore sand in the direction of the spiral trajectory of the drill bit, it is impossible to effectively perform cement slurry displacement operations through the turbulence effect. Sand spiral channels are formed in some parts of the wellbore. The casing is stuck during the casing running process. During the cementing process, the cement slurry cannot replace the virtual mud cake in the spiral channel, resulting in poor bonding quality of the second interface of cementing.

[0003] A Chinese patent document with publication number CN218439261U and publication date of February 3, 2023 discloses a guide shoe with a rotating self-guiding function, including a guide shoe body and a sealing ring, a rotating sleeve is provided at the right end of the guide shoe body, a rack is provided inside the rotating sleeve, a gear is meshed and connected at the right end of the rack, a side flow hole is meshed and connected at the right end of the gear, a rotating shaft is provided at the right end of the side flow hole, an impeller is rotatably connected at the right end of the rotating shaft, mounting blocks are fixedly connected at the right sides of the upper and lower ends of the rotating sleeve, a slide groove is provided inside the mounting block, a slider is provided inside the slide groove, a baffle is fixedly connected at one end of the slider, a deflection head is fixedly connected at the right end of the rotating sleeve, and a side flow hole is provided outside the rotating sleeve. The guide shoe is stably rotated, but the document is still unidirectionally rotating, and it is not possible to effectively replace cement slurry through the turbulence effect. Summary of the invention

[0004] The purpose of the bidirectional torque guide shoe and the use method provided by the present invention is to overcome the problem that the hydraulic rotary guide shoe in the prior art all rotates in one direction. Due to the existence of wellbore sand in the direction of the spiral trajectory of the drill bit, it is impossible to effectively perform cement slurry displacement operations through the turbulence effect. A sand sedimentation spiral channel is formed in some parts of the wellbore, and the casing is stuck during the casing lowering process. During the cementing process, the cement slurry cannot replace the virtual mud cake in the spiral channel, resulting in poor bonding quality of the second interface of the cementing.

[0005] To this end, the present invention provides a bidirectional torque guide shoe, including a sleeve connecting portion, a reaction force circulation sleeve, a central shaft and a reaction force circulation sleeve head, wherein the sleeve connecting portion, the reaction force circulation sleeve and the reaction force circulation sleeve head are sequentially sleeved on the outer side of the central shaft from left to right.

[0006] Preferably, it also includes a plane bearing, and the plane bearings are sleeved between the reaction force circulation sleeve and the central shaft, and between the reaction force circulation sleeve head and the central shaft.

[0007] Preferably, the plane bearing is a double annular plane bearing.

[0008] Preferably, the reaction force circulation sleeve is provided with a plurality of reaction circulation holes 1, and the reaction force circulation sleeve head is provided with a plurality of reaction circulation holes 2.

[0009] Preferably, the liquid outlet directions of the reaction circulation hole 1 and the reaction circulation hole 2 are opposite.

[0010] Preferably, the reaction circulation hole 1 is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve, and the reaction circulation hole 2 is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve head.

[0011] Preferably, a plurality of convex columns 1 are connected at equal intervals on the outer side of the reaction force circulation sleeve; a plurality of convex columns 2 are connected at equal intervals on the outer side of the reaction force circulation sleeve head.

[0012] Preferably, the reaction force circulation sleeve is cylindrical in shape, the left part of the reaction force circulation sleeve head is cylindrical, the right end part of the reaction force circulation sleeve head is a spherical crown, the length of the convex column one is the same as the length of the reaction force circulation sleeve, and the cylindrical length of the reaction force circulation sleeve head is < the length of the convex column two < the total length of the reaction force circulation sleeve head.

[0013] Preferably, the directions of the convex convex column 1 and the convex convex column 2 are opposite, and the angles between the convex convex column 1 and the convex convex column 2 and the central axis are acute angles.

[0014] A method for using the bidirectional torque guide shoe comprises the following steps: connecting the casing to the casing connecting part; lowering the bidirectional torque guide shoe with the casing into the wellbore, and when encountering resistance when entering the wellbore, circulating drilling fluid from the inside of the casing to the outside of the casing, the drilling fluid flows out from the reaction circulation hole 1 to drive the reaction force circulation sleeve to rotate, and the drilling fluid flows out from the reaction circulation hole 2 to drive the reaction force circulation sleeve head to rotate, and during rotation, the convex ridge column 1 and the convex ridge column 2 scrape the obstacles of the casing lowering.

[0015] Beneficial effects of the present invention:

[0016] 1. The bidirectional torque guide shoe and use method provided by the present invention include a casing connection part, a reaction force circulation sleeve, a central axis and a reaction force circulation sleeve head. The casing connection part is convenient for connecting the casing, and when in use, the bidirectional torque guide shoe is convenient for driving the casing to be lowered; the bidirectional torque guide shoe with the casing is lowered into the wellbore, and when encountering resistance when entering the wellbore, the drilling fluid is circulated from the inside of the casing to the outside of the casing, and the drilling fluid flows out from the reaction force circulation sleeve and the reaction force circulation sleeve head, driving the reaction force circulation sleeve and the reaction force circulation sleeve head to rotate on the central axis, and the reaction force circulation sleeve and the reaction force circulation sleeve head rotate in different directions, so as to realize the bidirectional rotation of the guide shoe, reduce the sticking friction resistance caused by sand settling in the spiral trajectory direction of the drill bit during the casing lowering process, reduce the sand stuck caused by low circulation efficiency during the casing lowering process, improve the flushing efficiency of the sand settling in the cementing annulus, improve the filling efficiency of the cement slurry system in the spiral channel, and improve the bonding quality of the second interface of the cementing.

[0017] 2. The bidirectional torque guide shoe and use method provided by the present invention are characterized in that the reaction circulation hole 1 is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve, and the reaction circulation hole 2 is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve head; as a result, after the liquid flows through, a reaction force acts on the tangent direction of the cylinder, causing the reaction force circulation sleeve and the reaction force circulation sleeve head to rotate.

[0018] 3. The bidirectional torque guide shoe and use method provided by the present invention have the reaction circulation hole 1 and the reaction circulation hole 2 having opposite liquid outlet directions, resulting in a reaction force acting on the tangential direction of the cylinder after the liquid flows through, and the reaction force circulation sleeve and the reaction force circulation sleeve head rotate in opposite directions, namely, clockwise and counterclockwise respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the structure of the two-way torque guide shoe detaching the plane bearing;

[0021] Figure 2 It is a structural diagram of the central axis;

[0022] Figure 3 It is a schematic diagram of the structure of a plane bearing;

[0023] Figure 4 It is a structural schematic diagram of the reaction force circulation sleeve;

[0024] Figure 5 It is a structural schematic diagram of a reaction force circulation sleeve.

[0025] Explanation of the accompanying drawings: 1. sleeve connection; 2. plane bearing; 3. reaction force circulation sleeve; 4. center axis; 5. reaction force circulation sleeve head; 3-1. reaction circulation hole one; 3-2. convex column one; 5-1. reaction circulation hole two; 5-2. convex column two. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] like Figure 1 and Figure 2 As shown, a bidirectional torque guide shoe includes a sleeve connecting part 1, a reaction force circulation sleeve 3, a central shaft 4 and a reaction force circulation sleeve head 5. The sleeve connecting part 1, the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5 are sequentially sleeved on the outer side of the central shaft 4 from left to right.

[0029] The casing connection part 1 is convenient for connecting the casing, and when in use, it is convenient for the two-way torque guide shoe to drive the casing to be lowered; the two-way torque guide shoe with the casing is lowered into the wellbore, and when encountering resistance when entering the wellbore, the drilling fluid is circulated from the inside of the casing to the outside of the casing, and the drilling fluid flows out from the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5, driving the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5 to rotate on the central axis 4, and the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5 have different rotation directions, so as to realize the two-way rotation of the guide shoe, reduce the sticking friction resistance caused by sand settling in the spiral trajectory direction of the drill bit during the casing lowering process, reduce the sand stuck due to low circulation efficiency during the casing lowering process, improve the flushing efficiency of the sand settling in the cementing annulus, improve the filling efficiency of the cement slurry system in the spiral channel, and improve the bonding quality of the second interface of the cementing.

[0030] Embodiment 2:

[0031] On the basis of embodiment 1, it further includes a plane bearing 2 , and the plane bearings 2 are sleeved between the reaction force circulation sleeve 3 and the central shaft 4 , and between the reaction force circulation sleeve head 5 and the central shaft 4 .

[0032] The plane bearing 2 is embedded between the reaction force circulation sleeve 3 and the central axis 4, which can ensure that when liquid is ejected from the reaction circulation hole 1 3-1, the reaction force circulation sleeve 3 can rotate around the central axis 4; the plane bearing 2 is embedded between the reaction force circulation sleeve head 5 and the central axis 4, which can ensure that when liquid is ejected from the reaction circulation hole 2 5-1, the reaction force circulation sleeve head 5 can rotate around the central axis 4.

[0033] Preferably, Figure 3 As shown, the plane bearing 2 is a double annular plane bearing.

[0034] This allows the bearing to achieve high load capacity and high rigidity in a very small space.

[0035] Preferably, Figure 4 and Figure 5 As shown, the reaction force circulation sleeve 3 is provided with a plurality of reaction circulation holes 1 3 - 1 , and the reaction force circulation sleeve head 5 is provided with a plurality of reaction circulation holes 2 5 - 1 .

[0036] The reaction circulation hole 1 3 - 1 and the reaction circulation hole 2 5 - 1 facilitate the outflow of liquid. Specifically, a plurality of reaction circulation holes 1 3 - 1 are evenly distributed on the reaction force circulation sleeve 3 , and a plurality of reaction circulation holes 2 5 - 1 are evenly distributed on the reaction force circulation sleeve head 5 .

[0037] Preferably, the liquid outlet directions of the reaction circulation hole 1 3 - 1 and the reaction circulation hole 2 5 - 1 are opposite.

[0038] This arrangement causes a reaction force to act on the tangential direction of the cylinder after the liquid flows through, and the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5 rotate in opposite directions, that is, respectively clockwise and counterclockwise, or respectively counterclockwise and clockwise.

[0039] Preferably, the reaction circulation hole 1 3 - 1 is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve 3 , and the reaction circulation hole 2 5 - 1 is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve head 5 .

[0040] This arrangement causes a reaction force to act on the tangential direction of the cylinder after the liquid flows through, causing the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5 to rotate.

[0041] Preferably, the outer side of the reaction force circulation sleeve 3 is connected with a plurality of convex columns 3-2 at equal intervals in the circumferential direction; the outer side of the reaction force circulation sleeve head 5 is connected with a plurality of convex columns 5-2 at equal intervals in the circumferential direction.

[0042] During the rotation process, the convex column 1 3-2 and the convex column 2 5-2 scrape the wellbore sand, wellbore shrinkage and other obstacles that hinder the casing from being lowered, and at the same time, the mud annulus returns upward to carry away the scraped sand and rock cuttings.

[0043] Preferably, the reaction force circulation sleeve 3 is cylindrical in shape, the left part of the reaction force circulation sleeve head 5 is cylindrical, the right end part of the reaction force circulation sleeve head 5 is a spherical crown, the length of the convex column 1 3-2 is the same as the length of the reaction force circulation sleeve 3, and the cylindrical length of the reaction force circulation sleeve head 5 is < the length of the convex column 2 5-2 < the total length of the reaction force circulation sleeve head 5.

[0044] During rotation, this setting can increase the scraping area, fully scrape away obstacles and improve work efficiency.

[0045] Specifically, a plurality of reaction circulation holes 1 3 - 1 are distributed between two adjacent convex columns 1 3 - 2 , and a plurality of reaction circulation holes 2 5 - 1 are distributed between two adjacent convex columns 2 5 - 2 .

[0046] The liquid coming out of the reaction circulation hole 1 3-1 can hit the convex column 1 3-2, thereby increasing the rotation speed of the reaction force circulation sleeve 3, and the liquid coming out of the reaction circulation hole 2 5-1 can hit the convex column 2 5-2, thereby increasing the rotation speed of the reaction force circulation sleeve head 5.

[0047] Preferably, the directions of the convex column 1 3 - 2 and the convex column 2 5 - 2 are opposite, and the angles between the convex column 1 3 - 2 and the convex column 2 5 - 2 and the central axis 4 are both acute angles.

[0048] When the casing is lowered to the predetermined position and the wellbore is circulated and cleaned before cementing, since the convex column 1 3-2 and the convex column 2 5-2 are not parallel to the central axis 4, the convex column 1 3-2 and the convex column 2 5-2 are not parallel and in different directions, the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5 rotate in different directions, resulting in turbulence when the liquid flows through the structure. The turbulence effect has a higher efficiency in flushing the outer annulus of the casing, which can reduce the mud residue on the well wall and improve the cleanliness of the wellbore before cementing; it can achieve a more comprehensive flushing of the irregular well wall and improve the fullness of the cement slurry in the outer annulus of the casing. Preferably, the convex column 1 3-2 and the convex column 2 5-2 have the same angle with the central axis 4.

[0049] Preferably, the outer surfaces of the convex column 1 3-2 and the convex column 2 5-2 are smooth. The smooth surface is conducive to scraping and is not easy to accumulate sand.

[0050] Preferably, the central shaft 4 is a hollow central shaft, that is, the central shaft is hollow in the axial direction, and this structure is convenient for connecting the sleeve connecting part 1, the reaction force circulation sleeve 3 and the reaction force circulation sleeve head 5, and is convenient for the liquid to flow out from the reaction circulation hole 1 3-1 and the reaction circulation hole 2 5-1 through the hollow.

[0051] Preferably, the sleeve connecting portion 1 is cylindrical, and a connecting hole is provided in the central axis of the cylinder. When in use, the sleeve is connected in the connecting hole.

[0052] Preferably, the sleeve connection part 1 is threadedly connected to the sleeve, and the sleeve connection part 1 is threadedly connected to the central axis 4. The threaded connection structure is simple and easy to install and disassemble.

[0053] Embodiment 3:

[0054] A method for using the bidirectional torque guide shoe comprises the following steps: connecting the casing to the casing connecting part 1; lowering the bidirectional torque guide shoe with the casing into the wellbore, and when encountering resistance when entering the wellbore, circulating the drilling fluid from the inside of the casing to the outside of the casing, the drilling fluid flows out from the reaction circulation hole 1 3-1 to drive the reaction force circulation sleeve 3 to rotate, and the drilling fluid flows out from the reaction circulation hole 2 5-1 to drive the reaction force circulation sleeve head 5 to rotate, and during rotation, the convex column 1 3-2 and the convex column 2 5-2 scrape the obstacles of the casing.

[0055] Specifically, the bidirectional torque guide shoe is connected to the front end of the casing male buckle through the casing connection part 1. The casing with the bidirectional torque guide shoe is lowered into the wellbore. When encountering resistance when entering the open hole wellbore, the drilling fluid is circulated from the inside of the casing to the outside of the casing. The drilling fluid flows out from the reaction circulation hole 1 3-1 to drive the reaction force circulation sleeve 3 to rotate clockwise or counterclockwise. The drilling fluid flows out from the reaction circulation hole 2 5-1 to drive the reaction force circulation sleeve head 5 to rotate counterclockwise or clockwise. During the rotation, the convex column 1 3-2 and the convex column 2 5-2 scrape the obstacles such as the wellbore sand and the wellbore shrinkage that hinder the casing from being lowered. At the same time, the mud annulus returns to the upper part to carry away the scraped sand and rock debris.

[0056] When the casing is lowered to the predetermined position and the wellbore is circulated and cleaned before cementing, the bidirectionally rotating rotating cylinder (reaction force circulation sleeve 3 and reaction force circulation sleeve head 5) rotates in different directions, causing turbulence when the liquid flows through the structure. The turbulent effect has a higher efficiency in flushing the annulus outside the casing, which can reduce the mud residue on the well wall and improve the cleanliness of the wellbore before cementing.

[0057] During the cementing process, the cement slurry flows through the bidirectional rotating drum, forming a turbulent state, which can more comprehensively flush the irregular well wall and improve the filling degree of the cement slurry in the annulus.

[0058] The present invention can improve the passing efficiency of the casing in the open hole formation by using the bidirectional torque guide shoe, effectively solve the difficulty of casing lowering caused by the shrinkage of the wellbore due to sand deposition, improve the turbulence effect during cementing, and improve the cementing quality.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front", "inside", "right", etc. is based on the orientation or positional relationship shown in the drawings, 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. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention.

[0060] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A bidirectional torque guide shoe, characterized in that: The invention comprises a sleeve connecting portion (1), a reaction force circulation sleeve (3), a central shaft (4) and a reaction force circulation sleeve head (5), wherein the sleeve connecting portion (1), the reaction force circulation sleeve (3) and the reaction force circulation sleeve head (5) are sleeved on the outer side of the central shaft (4) in sequence from left to right.

2. The bidirectional torque guide shoe according to claim 1, characterized in that: It also includes a plane bearing (2), and the plane bearing (2) is sleeved between the reaction force circulation sleeve (3) and the central shaft (4), and between the reaction force circulation sleeve head (5) and the central shaft (4).

3. The bidirectional torque guide shoe according to claim 2, characterized in that: The plane bearing (2) is a double annular plane bearing.

4. The bidirectional torque guide shoe according to claim 1, characterized in that: The reaction force circulation sleeve (3) is provided with a plurality of reaction circulation holes one (3-1), and the reaction force circulation sleeve head (5) is provided with a plurality of reaction circulation holes two (5-1).

5. The bidirectional torque guide shoe according to claim 4, characterized in that: The liquid outlet directions of the reaction circulation hole 1 (3-1) and the reaction circulation hole 2 (5-1) are opposite.

6. The bidirectional torque guide shoe according to claim 4, characterized in that: The reaction circulation hole 1 (3-1) is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve (3), and the reaction circulation hole 2 (5-1) is opened along the tangent direction of the outer diameter of the reaction force circulation sleeve head (5).

7. The bidirectional torque guide shoe according to claim 5, characterized in that: The reaction force circulation sleeve (3) has multiple convex columns (3-2) connected at equal intervals in the circumferential direction on the outer side thereof; and the reaction force circulation sleeve head (5) has multiple convex columns (5-2) connected at equal intervals in the circumferential direction on the outer side thereof.

8. The bidirectional torque guide shoe according to claim 7, characterized in that: The reaction force circulation sleeve (3) is cylindrical in shape, the left part of the reaction force circulation sleeve head (5) is cylindrical, the right end of the reaction force circulation sleeve head (5) is a spherical crown, the length of the convex rib column 1 (3-2) is the same as the length of the reaction force circulation sleeve (3), and the length of the cylinder in the reaction force circulation sleeve head (5) is less than the length of the convex rib column 2 (5-2) and the total length of the reaction force circulation sleeve head (5).

9. The bidirectional torque guide shoe according to claim 8, characterized in that: The directions of the convex convex column 1 (3-2) and the convex convex column 2 (5-2) are opposite, and the angles between the convex convex column 1 (3-2) and the convex convex column 2 (5-2) and the central axis (4) are both acute angles.

10. A method for using the bidirectional torque guide shoe according to any one of claims 1 to 9, characterized in that: The invention comprises the following steps: connecting a casing to a casing connecting part (1); lowering a bidirectional torque guide shoe with a casing into a wellbore, and when encountering resistance when entering the wellbore, circulating drilling fluid from the inside of the casing to the outside of the casing, the drilling fluid flows out from a reaction circulation hole 1 (3-1) to drive a reaction force circulation sleeve (3) to rotate, and the drilling fluid flows out from a reaction circulation hole 2 (5-1) to drive a reaction force circulation sleeve head (5) to rotate, and during the rotation, the convex column 1 (3-2) and the convex column 2 (5-2) scrape the obstacles encountered by the casing.

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