Anti-deformation elastic casing centralizer

Abstract

The invention relates to the technical field of oil exploitation, and discloses an anti-deformation elastic casing centralizer which comprises a folding type centralizing mechanism and an elastic hydraulic force dispersing mechanism. According to the anti-deformation elastic casing centralizer, the anti-deformation capacity of the arc-shaped rib plates and the anti-deformation capacity of the spiral springs are jointly combined, the effect of resisting extrusion force is achieved, and therefore the resistance capacity of equipment is improved, and in addition, when the single spiral spring in the horizontal state deforms, under the action of buffer liquid, the deformation of the single spiral spring in the horizontal state can be effectively reduced. And the extrusion force is transmitted to all the arc-shaped rib plates and the spiral springs, so that the common resisting effect is achieved, and the resisting capacity of the equipment is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil production, in particular to an anti-deformation elastic casing centralizer. Background Art

[0002] The casing centralizer is a device installed on the casing string to center the casing string in the wellbore. It has the characteristics of simple structure, easy use, long service life and relatively low cost. In addition to ensuring that the cement ring outside the casing string has a certain thickness, the casing centralizer can also reduce the resistance when lowering the casing to avoid sticking the casing, which is beneficial to improving the cementing quality. Casing centralizers are generally divided into two types: elastic centralizers and rigid centralizers. A small number of them are semi-rigid. Most of the rigid centralizers have an inner diameter slightly larger than the casing. They are inserted from the male buckle and then tightened. The materials include cast steel, aluminum alloy and high-performance polymers. Elastic centralizers are braided and welded. Generally, for the convenience of fixing, they are all hinged. However, when the existing elastic casing centralizer is in use, the ribs on the centralizer are often deformed due to extrusion, resulting in insufficient reset force of the elastic casing centralizer and poor centralizing effect.

[0003] To this end, the Chinese patent with the publication number "CN112012671A" announced "an anti-deformation elastic casing straightener", whose main structure includes a casing frame and a clamp, a casing opening is provided in the casing frame, a plurality of arc grooves are provided on the outer wall of the casing frame, a rib plate is provided in the arc groove, one end of the rib plate is fixedly connected to a first bracket, a second bracket is hinged on the rib plate, a second slide groove and a first slide hole are provided on the inner wall of the bottom of the arc groove, and a sliding frame is slidably connected in the second slide groove. The anti-deformation elastic casing straightener is provided with a first bracket, a second bracket, a first slider and a second slider. During use, the first bracket and the second bracket support the rib plate. When the rib plate is squeezed, the first spring and the second spring contract at the same time, the first slider slides, the second slider drives the second bracket to move, and the first bracket slides, so that the rib plate contracts into the arc groove, avoiding deformation of the rib plate, greatly increasing the reset force of the anti-deformation elastic casing straightener, and the straightening effect is better.

[0004] By carefully understanding the above-mentioned anti-deformation elastic casing straightener, it can be learned that: the way it resists deformation is the elastic force generated by the elastic compression of the coil spring, and each rib plate is subjected to a separate extrusion force when it moves or is under pressure, resulting in the following defects: First, it only utilizes a single coil spring to resist deformation. Therefore, the force to resist extrusion comes from the coil spring, resulting in its resistance force being too single and the resistance capacity formed being weak; second, each rib plate moves independently when being squeezed, and during the movement, it does not produce a decomposition effect on the overall force, resulting in its resistance capacity being further reduced. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an anti-deformation elastic casing straightener, which utilizes the anti-deformation ability of the arc rib plate itself and the anti-deformation ability of the coil spring to resist the extrusion force, thereby improving the resistance of the equipment. In addition, when a single horizontal coil spring is deformed, the extrusion force can be transmitted to all the arc rib plates and coil springs under the action of the buffer, thereby achieving a joint resistance effect, further improving the resistance of the equipment, and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-deformation elastic casing straightener, comprising a closing straightening mechanism, an upper ring and a lower ring that can be placed on the outside of the sleeve, and a plurality of arc-shaped ribs installed between the upper ring and the lower ring and bent outward at the center; and an elastic hydraulic force dispersion mechanism, a middle ring that can be placed on the outside of the sleeve, located between the upper ring and the lower ring and filled with a buffer solution, a plurality of No. 1 piston bodies that are placed in the horizontal position of the middle ring and can produce a driving effect on the liquid located inside the middle ring when subjected to the squeezing force from the arc-shaped ribs, a No. 1 coil spring that can produce an elastic force on the movement of the No. 1 piston body, a plurality of No. 2 piston bodies that are placed in the longitudinal position of the middle ring and produce a longitudinal movement effect when subjected to the liquid pressure from the buffer solution, and a No. 2 coil spring that produces an elastic force on the No. 2 piston body.

[0007] Preferably, the folding straightening mechanism also includes multiple groups of fixed vertical plate bases, each group of the multiple groups of fixed vertical plate bases includes two vertical plate bodies fixedly installed on the bottom surface of the upper ring and the upper surface of the lower ring in an opposing manner, and a horizontal connecting shaft fixedly installed between the two vertical plate bodies, the centers of the upper ring and the lower ring are provided with a No. 1 hole that is sleeved on the outside of the sleeve, the upper annular surface of the upper ring and the lower annular surface of the lower ring are respectively provided with a plurality of symmetrical longitudinal shaft fixing grooves, the arc-shaped rib plate is provided with a shaft sleeve hole that can be sleeved on the shaft of the horizontal connecting shaft in the plate body near its end, the central part of the inner concave surface of the arc-shaped rib plate is provided with a horizontal raised platform with an integral structure therewith, and the end of the horizontal raised platform is provided with a horizontal shaft fixing groove with an inner concave structure.

[0008] Preferably, the structural radius of the No. 1 sleeve hole matches the structural radius of the outer circumferential surface of the sleeve.

[0009] Preferably, the upper surface of the upper ring and the lower surface of the lower ring are provided with a conical inclined surface structure a for facilitating the movement of the upper ring and the lower ring inside the hole.

[0010] Preferably, the structural radius of the shaft body sleeve hole matches the structural radius of the horizontal shaft connection, and the rotation direction of the shaft body sleeve hole points to the axial center line of the upper sleeve ring and the lower sleeve ring.

[0011] Preferably, the elastic hydraulic force dispersion mechanism also includes a horizontal telescopic rod and a longitudinal telescopic rod, the center of the middle ring is provided with a No. 2 sleeve hole which is sleeved on the outside of the sleeve, the middle ring is provided with an annular liquid flow chamber inside the ring body, the outer circumferential surface of the middle ring is provided with a plurality of horizontal hollow shells which are integrally structured with it and are in a horizontal state, the upper annular end portion and the lower annular end portion of the middle ring are respectively provided with a longitudinal hollow shell which is integrally structured with the middle ring directly above and directly below each of the horizontal hollow shells, each of the horizontal hollow shells is provided with a horizontal component active chamber inside, the middle ring is provided with a No. 1 liquid flow hole which connects the annular liquid flow chamber and one end of each horizontal component active chamber inside, the end of the horizontal hollow shell is provided with a No. 1 rod body through-hole which connects the external space and the other end of the horizontal component active chamber, the horizontal hollow shell is provided with a No. 1 piston body which can move axially along the horizontal component active chamber inside the horizontal component active chamber, the No. 1 piston body is arranged on the surface facing the No. 1 rod body through-hole A horizontal telescopic rod penetrating the No. 1 rod body perforation is fixedly installed at one end of the longitudinal hollow shell, a longitudinal component active chamber is arranged inside each of the longitudinal hollow shells, a No. 2 liquid flow hole connecting the annular liquid flow chamber and one end of each longitudinal component active chamber is arranged inside the middle ring, a No. 2 rod body perforation connecting the external space and the other end of the longitudinal component active chamber is arranged at the end of the longitudinal hollow shell, a No. 2 piston body capable of axial movement along the longitudinal component active chamber is arranged inside the longitudinal hollow shell located in the longitudinal component active chamber, a longitudinal telescopic rod penetrating the No. 2 rod body perforation is fixedly installed at one end of the No. 2 piston body facing the No. 2 rod body perforation, the horizontal telescopic rod is fixedly installed inside the horizontal shaft body fixing groove at one end located outside, the longitudinal telescopic rod is fixedly installed inside the longitudinal shaft body fixing groove at one end located outside, a No. 1 coil spring generating elastic pressure on the No. 1 piston body is arranged inside the horizontal component active chamber, and a No. 2 coil spring generating elastic pressure on the No. 2 piston body is arranged inside the longitudinal component active chamber.

[0012] Preferably, the closed area formed by the No. 1 piston body, the horizontal component active cavity, the No. 1 liquid flow hole, the annular liquid flow hole, the No. 2 liquid flow hole, the longitudinal component active cavity and the No. 2 piston body is filled with a buffer solution.

[0013] Preferably, the structural radius of the No. 2 sleeve hole matches the structural radius of the outer circumferential surface of the sleeve.

[0014] Preferably, the elastic pressure exerted by the No. 1 coil spring on the No. 1 piston body is directed toward the horizontal telescopic rod.

[0015] Preferably, the elastic pressure exerted by the No. 2 coil spring on the No. 2 piston body is directed toward the No. 2 liquid flow hole.

[0016] Compared with the prior art, the present invention provides an anti-deformation elastic casing centralizer, which has the following beneficial effects: The anti-deformation ability of the arc rib plate itself and the anti-deformation ability of the coil spring are combined to resist the extrusion force, thereby improving the resistance of the equipment. In addition, when a single horizontal coil spring is deformed, the extrusion force can be transmitted to all the arc rib plates and coil springs under the action of the buffer, thereby achieving a joint resistance effect, thereby further improving the resistance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a three-dimensional cross-sectional view of the present invention at a first viewing angle; Figure 3 is a three-dimensional cross-sectional view of the present invention at a second viewing angle; Figure 4 It is a three-dimensional diagram of the folding type righting mechanism in the present invention; Figure 5 It is a three-dimensional cross-sectional view of the folding type righting mechanism in the present invention; Figure 6 A three-dimensional diagram of the elastic hydraulic force dispersing mechanism of the present invention; Figure 7 It is a three-dimensional cross-sectional view of the elastic hydraulic force dispersing mechanism of the present invention at a first viewing angle; Figure 8 It is a three-dimensional cross-sectional view of the elastic hydraulic force dispersing mechanism of the present invention at a second viewing angle.

[0018] Among them: 1. Closing type straightening mechanism; 11. Upper sleeve ring; 12. Lower sleeve ring; 13. No. 1 sleeve hole; 14. Fixed vertical plate base; 15. Horizontal connecting shaft; 16. Shaft sleeve hole; 17. Arc rib plate; 18. Longitudinal shaft fixing groove; 19. Horizontal raised platform; 110. Horizontal shaft fixing groove; 2. Elastic hydraulic force dispersing mechanism; 21. Middle sleeve ring; 22. No. 2 sleeve hole; 23. Annular liquid flow chamber; 2 4. Horizontal hollow shell; 25. Longitudinal hollow shell; 26. Horizontal component movable cavity; 27. Longitudinal component movable cavity; 28. No. 1 liquid flow hole; 29. ​​No. 1 rod body perforation; 210. No. 2 liquid flow hole; 211. No. 2 rod body perforation; 212. No. 1 piston body; 213. Horizontal telescopic rod; 214. No. 1 coil spring; 215. No. 2 piston body; 216. Longitudinal telescopic rod; 217. No. 2 coil spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 , Figure 2 and Figure 3 , an anti-deformation elastic casing centralizer, firstly, the upper ring 11, the lower ring 12 and the middle ring 21 of the device are placed on the outside of the oil pipe sleeve according to the predetermined position.

[0021] In order to utilize the rigidity of the arc-shaped rib plate 17 to achieve elastic resistance, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , it is necessary to set up a closing type straightening mechanism 1, which is provided with an upper ring 11 and a lower ring 12 that can be placed on the outside of the sleeve, and a plurality of arc-shaped ribs 17 installed between the upper ring 11 and the lower ring 12 and bent outward at the center. In the process of the oil sleeve moving in the hole, once the arc-shaped ribs 17 are squeezed by the hole, the arc-shaped ribs 17 at the squeezed part will produce plastic deformation concave inward. At the same time, the rigidity of the arc-shaped ribs 17 itself will exert a corresponding force on the oil pipe sleeve, so that the oil pipe is kept centered in the hole, and then the rigidity of the arc-shaped ribs 17 itself is used to achieve the purpose of elastic resistance.

[0022] For the specific structure of the folding type righting mechanism 1, please refer to Figure 4 , Figure 5 and Figure 6 , and also includes multiple groups of fixed vertical plate bases 14, each group of the multiple groups of fixed vertical plate bases 14 includes two vertical plate bodies fixedly installed in an opposing form on the bottom surface of the upper collar 11 and the upper surface of the lower collar 12, and a horizontal connecting shaft 15 fixedly installed between the two vertical plate bodies, the centers of the upper collar 11 and the lower collar 12 are provided with a No. 1 sleeve hole 13 sleeved on the outside of the sleeve, the upper annular surface of the upper collar 11 and the lower annular surface of the lower collar 12 are respectively provided with multiple symmetrical longitudinal shaft fixing grooves 18, and the arc-shaped rib plate 17 is provided with a shaft sleeve hole 16 that can be sleeved on the shaft body of the horizontal connecting shaft 15 in the plate body near its end, A horizontal raised platform 19 of an integral structure is provided at the center of the inner concave surface of the arc-shaped rib plate 17, and a horizontal shaft fixing groove 110 of an inner concave structure is provided at the end of the horizontal raised platform 19. The structural radius of the No. 1 sleeve hole 13 matches the structural radius of the outer circumferential surface of the sleeve, and the upper surface of the upper sleeve ring 11 and the lower surface of the lower sleeve ring 12 are provided with a conical inclined surface structure a for facilitating the movement of the upper sleeve ring 11 and the lower sleeve ring 12 inside the hole. The structural radius of the shaft sleeve hole 16 matches the structural radius of the horizontal connecting shaft 15, and the rotation direction of the shaft sleeve hole 16 points to the axial centerline of the upper sleeve ring 11 and the lower sleeve ring 12.

[0023] To achieve a co-resistance effect to further increase the resistance of the device, see Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8, it is necessary to set up an elastic hydraulic force dispersing mechanism 2, which is provided with a middle ring 21 that can be placed outside the sleeve, located between the upper ring 11 and the lower ring 12 and filled with a buffer solution, a plurality of No. 1 piston bodies 212 placed in the horizontal position of the middle ring 21 and capable of driving the liquid inside the middle ring 21 when subjected to the extrusion force from the arc rib plate 17, a No. 1 coil spring 214 capable of generating an elastic force on the movement of the No. 1 piston body 212, a plurality of No. 2 piston bodies 215 placed in the longitudinal position of the middle ring 21 and capable of generating a longitudinal movement effect when subjected to the liquid pressure from the buffer solution, and a No. 2 coil spring 217 generating an elastic force on the No. 2 piston body 215, when a single arc rib plate 17 is squeezed by the hole, the arc rib plate at the squeezed part 17 will produce inward concave plastic deformation. At the same time, the arc rib plate 17 will produce a force on the corresponding horizontal telescopic rod 213, so that the horizontal telescopic rod 213 drives the corresponding No. 1 piston body 212 to move, and then the buffer located at one end of the No. 1 piston body 212 produces liquid pressure. Due to the fluidity of the liquid, the force will be transmitted to each No. 2 piston body 215, and the No. 2 piston body 215 will produce a longitudinal movement effect. The longitudinal movement effect will be transmitted to each arc rib plate 17 through the upper ring 11 and the lower ring 12, so that all the arc rib plates 17, No. 1 coil spring 214 and No. 2 coil spring 217 are subjected to the force generated by extrusion, and then share the pressure on the arc rib plate 17 at the extrusion position, to achieve a common resistance effect, so as to further improve the resistance capacity of the equipment.

[0024] For the specific structure of the elastic hydraulic force dispersing mechanism 2, please refer to Figure 7 and Figure 8, also includes a horizontal telescopic rod 213 and a longitudinal telescopic rod 216, the center of the middle ring 21 is provided with a No. 2 sleeve hole 22 sleeved on the outside of the sleeve, the ring body of the middle ring 21 is provided with an annular liquid flow chamber 23, the outer circumferential surface of the middle ring 21 is provided with a plurality of horizontal hollow shells 24 which are integrally structured with it and are in a horizontal state, the upper annular end and the lower annular end of the middle ring 21 are respectively provided with a longitudinal hollow shell 25 which is an integral structure with the middle ring 21 directly above and directly below each of the horizontal hollow shells 24, each of the horizontal hollow shells 24 is provided with a horizontal component activity chamber 26, and the interior of the middle ring 21 is provided with a connecting annular liquid flow chamber 23. The horizontal hollow shell 24 has a first rod body through hole 29 which is connected to the outside space and the other end of the horizontal component movable cavity 26. The horizontal hollow shell 24 has a first piston body 212 which can move axially along the horizontal component movable cavity 26. The first piston body 212 is fixedly installed with a horizontal telescopic rod 213 which passes through the first rod body through hole 29 at one end facing the first rod body through hole 29. Each of the longitudinal hollow shells 25 has a longitudinal component movable cavity 27. The middle ring 21 has a through hole 29 which connects the annular liquid flow cavity 23 and each longitudinal component movable cavity 26. The second liquid flow hole 210 is formed at one end of the cavity 27, and the end of the longitudinal hollow shell 25 is provided with a second rod body through hole 211 connecting the external space and the other end of the longitudinal component active cavity 27. The longitudinal hollow shell 25 is provided with a second piston body 215 capable of axial movement along the longitudinal component active cavity 27 inside the longitudinal component active cavity 27. The second piston body 215 is fixedly installed with a longitudinal telescopic rod 216 passing through the second rod body through hole 211 at one end facing the second rod body through hole 211. The horizontal telescopic rod 213 is fixedly installed at the end located outside the horizontal shaft body fixing groove 110, and the longitudinal telescopic rod 216 is fixedly installed at the end located outside the longitudinal shaft body fixing groove 1 8, a No. 1 coil spring 214 for generating elastic pressure on the No. 1 piston body 212 is placed inside the horizontal component movable chamber 26, a No. 2 coil spring 217 for generating elastic pressure on the No. 2 piston body 215 is placed inside the longitudinal component movable chamber 27, the No. 1 piston body 212, the horizontal component movable chamber 26, the No. 1 liquid flow hole 28, the annular liquid flow chamber 23, the No. 2 liquid flow hole 210, the longitudinal component movable chamber 27 and the No. 2 piston body 215 The closed area is filled with a buffer solution, the structural radius of the No. 2 sleeve hole 22 matches the structural radius of the outer circumferential surface of the sleeve, and the elastic pressure generated by the No. 1 coil spring 214 on the No. 1 piston body 212 is directed toward the horizontal telescopic rod 213,The elastic pressure generated by the No. 2 coil spring 217 on the No. 2 piston body 215 is directed toward the No. 2 liquid flow hole 210.

[0025] When in use, the upper sleeve ring 11, the lower sleeve ring 12 and the middle sleeve ring 21 in the device are placed on the outside of the oil pipe sleeve according to the predetermined position. When the oil sleeve moves in the hole, once the arc rib plate 17 is squeezed by the hole, the arc rib plate 17 at the squeezed part will produce plastic deformation inward, and the rigidity of the arc rib plate 17 itself will exert a corresponding force on the oil pipe sleeve. At the same time, the arc rib plate 17 will exert a force on the corresponding horizontal telescopic rod 213, so that the horizontal telescopic rod 213 drives the corresponding No. 1 piston body 212 to move, thereby causing the No. 1 piston body 212 to move. The buffer at one end of the piston body 212 generates liquid pressure. Due to the fluidity of the liquid, the force is transmitted to each No. 2 piston body 215, causing the No. 2 piston body 215 to produce a longitudinal movement effect. The longitudinal movement effect is then transmitted to each arc rib plate 17 through the upper ring 11 and the lower ring 12, so that all the arc rib plates 17, the No. 1 coil spring 214 and the No. 2 coil spring 217 are subjected to the force generated by the extrusion, and then the pressure on the arc rib plate 17 at the extrusion position is shared, achieving a common resistance effect, thereby keeping the oil pipe centered in the hole.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-deformation elastic casing centralizer, characterized in that: include, A folding type straightening mechanism (1) is provided with an upper sleeve ring (11) and a lower sleeve ring (12) which can be sleeved on the outside of a sleeve, and a plurality of arc-shaped rib plates (17) which are installed between the upper sleeve ring (11) and the lower sleeve ring (12) and whose central parts are bent outwards; and an elastic hydraulic force dispersing mechanism (2), wherein a middle sleeve (21) is provided inside the middle sleeve (21) which can be placed outside the sleeve, is located between the upper sleeve (11) and the lower sleeve (12) and is filled with a buffer solution, a plurality of No. 1 piston bodies (212) are placed in a horizontal position of the middle sleeve (21) and can produce a driving effect on the liquid inside the middle sleeve (21) when subjected to a squeezing force from an arc-shaped rib plate (17), a No. 1 coil spring (214) can produce an elastic force on the movement of the No. 1 piston body (212), a plurality of No. 2 piston bodies (215) are placed in a longitudinal position of the middle sleeve (21) and produce a longitudinal movement effect when subjected to liquid pressure from the buffer solution, and a No. 2 coil spring (217) produces an elastic force on the No. 2 piston body (215).

2. The anti-deformation elastic casing centralizer according to claim 1, characterized in that: The foldable straightening mechanism (1) further comprises a plurality of sets of fixed vertical plate bases (14), each set of the plurality of fixed vertical plate bases (14) comprising two vertical plate bodies fixedly mounted in an opposing manner on the bottom surface of the upper sleeve (11) and the upper surface of the lower sleeve (12), and a horizontal connecting shaft (15) fixedly mounted between the two vertical plate bodies, the centers of the upper sleeve (11) and the lower sleeve (12) being provided with a first sleeve hole (13) sleeved on the outside of the sleeve, the upper ring of the upper sleeve (11) The arc-shaped surface and the lower annular surface of the lower sleeve ring (12) are respectively provided with a plurality of symmetrical longitudinal shaft body fixing grooves (18); the arc-shaped rib plate (17) is provided with a shaft body sleeve hole (16) capable of being sleeved on the shaft body of the horizontal connecting shaft (15) in the plate body near its end; a horizontal protruding platform (19) of an integral structure is provided at the center of the inner concave surface of the arc-shaped rib plate (17); and a horizontal shaft body fixing groove (110) of an inner concave structure is provided at the end of the horizontal protruding platform (19).

3. The anti-deformation elastic casing centralizer according to claim 2, characterized in that: The structural radius of the No. 1 sleeve hole (13) matches the structural radius of the outer circumferential surface of the sleeve.

4. The anti-deformation elastic casing centralizer according to claim 3, characterized in that: The upper surface of the upper collar (11) and the lower surface of the lower collar (12) are provided with a conical inclined surface structure a which facilitates the upper collar (11) and the lower collar (12) to move inside the hole.

5. The anti-deformation elastic casing centralizer according to claim 4, characterized in that: The structural radius of the shaft body sleeve hole (16) matches the structural radius of the horizontal connecting shaft (15), and the rotation direction of the shaft body sleeve hole (16) points to the axis center line of the upper sleeve ring (11) and the lower sleeve ring (12).

6. The anti-deformation elastic casing centralizer according to claim 5, characterized in that: The elastic hydraulic force dispersing mechanism (2) further comprises a horizontal telescopic rod (213) and a longitudinal telescopic rod (216); a second sleeve hole (22) sleeved on the outside of the sleeve is arranged at the center of the middle sleeve ring (21); an annular liquid flow chamber (23) is arranged inside the ring body of the middle sleeve ring (21); a plurality of horizontal hollow shells (24) which are integrally formed with the middle sleeve ring and are in a horizontal state are arranged on the outer circumferential surface of the middle sleeve ring (21); an upper annular end portion and a lower annular end portion of the middle sleeve ring (21) are respectively arranged with a longitudinal hollow shell (25) which is integrally formed with the middle sleeve ring (21) and located directly above and directly below each of the horizontal hollow shells (24); each of the horizontal hollow shells (24) is provided with a plurality of horizontal hollow shells (24) which are integrally formed with the middle sleeve ring (21); The core shell (24) is provided with a horizontal component movable cavity (26) inside, the middle collar (21) is provided with a No. 1 liquid flow hole (28) connecting the annular liquid flow cavity (23) and one end of each horizontal component movable cavity (26), the end of the horizontal hollow shell (24) is provided with a No. 1 rod body through hole (29) connecting the external space and the other end of the horizontal component movable cavity (26), the horizontal hollow shell (24) is provided with a No. 1 piston body (212) that can move axially along the horizontal component movable cavity (26) inside the horizontal component movable cavity (26), and the No. 1 piston body (212) is fixedly installed with a through hole at one end facing the No. 1 rod body through hole (29). A horizontal telescopic rod (213) having a No. 1 rod body through hole (29), each of the longitudinal hollow shells (25) being provided with a longitudinal component active cavity (27) inside, a No. 2 liquid flow hole (210) being provided inside the middle collar (21) for connecting the annular liquid flow cavity (23) and one end of each longitudinal component active cavity (27), a No. 2 rod body through hole (211) being provided at the end of the longitudinal hollow shell (25) for connecting the external space and the other end of the longitudinal component active cavity (27), a No. 2 piston body (215) being arranged inside the longitudinal component active cavity (27) and being capable of axial movement along the longitudinal component active cavity (27), the No. 2 piston body (215) being arranged inside the longitudinal component active cavity (27), the No. 2 piston body (215) being capable of axial movement along the longitudinal component active cavity (27), A longitudinal telescopic rod (216) penetrating the No. 2 rod body through-hole (211) is fixedly mounted on the end of the body (215) facing the No. 2 rod body through-hole (211); the horizontal telescopic rod (213) is fixedly mounted on the inside of the horizontal shaft body fixing groove (110) at the end located outside; the longitudinal telescopic rod (216) is fixedly mounted on the inside of the longitudinal shaft body fixing groove (18) at the end located outside; a No. 1 coil spring (214) for generating elastic pressure on the No. 1 piston body (212) is placed inside the horizontal component movable cavity (26); and a No. 2 coil spring (217) for generating elastic pressure on the No. 2 piston body (215) is placed inside the longitudinal component movable cavity (27).

7. The anti-deformation elastic casing centralizer according to claim 6, characterized in that: A buffer solution is filled inside the closed area formed by the No. 1 piston body (212), the horizontal component active cavity (26), the No. 1 liquid flow hole (28), the annular liquid flow cavity (23), the No. 2 liquid flow hole (210), the longitudinal component active cavity (27) and the No. 2 piston body (215).

8. The anti-deformation elastic casing centralizer according to claim 7, characterized in that: The structural radius of the second sleeve hole (22) matches the structural radius of the outer circumferential surface of the sleeve.

9. The anti-deformation elastic casing centralizer according to claim 8, characterized in that: The elastic pressure generated by the No. 1 coil spring (214) on the No. 1 piston body (212) is directed toward the horizontal telescopic rod (213).

10. The anti-deformation elastic casing centralizer according to claim 9, characterized in that: The elastic pressure generated by the No. 2 coil spring (217) on the No. 2 piston body (215) is directed toward the No. 2 liquid flow hole (210).

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