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CN-224228659-U - Multifunctional antimagnetic wellhead device

CN224228659UCN 224228659 UCN224228659 UCN 224228659UCN-224228659-U

Abstract

The utility model relates to the technical field of cable logging and discloses a multifunctional antimagnetic wellhead device which comprises a wellhead baffle, an outer circle magnetic conduction tube, an inner circle magnetic conduction tube and a fixed transverse plate, wherein the fixed transverse plate is fixedly arranged on the inner wall of the outer circle magnetic conduction tube at equal intervals in a circumferential manner, a plurality of groups of bevel gears can be driven by a conical fluted disc at the bottom, corresponding ball screws can synchronously rotate on the inner side wall of an annular plate, the movable transverse plate can slide in the fixed transverse plate and penetrate through a through groove at a joint part to extend to the outer side of the outer circle magnetic conduction tube, so that the outer circle magnetic conduction tube is in fit joint with a wellhead to be installed, and when the movable transverse plate extends from the outer side of the horn-shaped outer circle magnetic conduction tube to the wellhead to joint the antimagnetic wellhead, the movable transverse plate distributed in a plurality of groups can realize joint stability between the outer circle magnetic conduction tube and the central position of the wellhead, so that the antimagnetic wellhead is more stable when a logging cable is released.

Inventors

  • WANG LIPING

Assignees

  • 西安嘉和瑞诚实业有限公司

Dates

Publication Date
20260512
Application Date
20250527

Claims (6)

  1. 1. The utility model provides a multi-functional antimagnetic wellhead assembly, includes well head baffle (100), outer circle magnetic conduction tube barrel (200), interior circle magnetic conduction tube barrel (300), its characterized in that still includes: The fixed transverse plates (400) are fixedly arranged on the inner wall of the outer circle magnetic conduction tube barrel (200) at equal intervals in a circumference manner, a plurality of groups of annular plates (41) are welded at the adjacent ends of the fixed transverse plates (400), movable transverse plates (42) are slidably arranged in the fixed transverse plates (400), ball screws (43) are rotatably arranged on the inner wall of each annular plate (41) at equal intervals, the movable transverse plates (42) are connected with the ball screws (43) through threaded fit, and bevel gears (44) are fixedly arranged at one ends, far away from the movable transverse plates (42), of the ball screws (43); The positioning disc (500) is rotatably arranged at the center of the top of the annular plate (41), the conical tooth disc (51) is integrally formed on the bottom surface of the positioning disc (500), and the conical tooth disc (51) is meshed with the outer edges of the bevel gears (44).
  2. 2. The multifunctional antimagnetic wellhead device according to claim 1, characterized in that the outer circumference of the wellhead baffle (100) is hinged with a hinged frame (11), two sides of the outer part of the outer magnetic conduction tube (200) are respectively welded with a bracket (21), one side of the outer part of the outer magnetic conduction tube (200) is provided with a threading opening (22) in a penetrating way, and a thread groove (23) is respectively formed between the bottom tube body of the outer magnetic conduction tube (200) and the wellhead baffle (100).
  3. 3. A multi-functional antimagnetic wellhead assembly according to claim 2 wherein the fixed cross plate (400) is fixedly mounted with a connecting plate (430) on an inner wall of one end of the fixed cross plate (400) near the annular plate (41), the ball bearing (431) is rotatably mounted on one side of the connecting plate (430) near the annular plate (41), and the ball screw (43) is fixedly mounted on an inner diameter of the ball bearing (431) and extends into an inner wall of the movable cross plate (42).
  4. 4. A multi-functional antimagnetic wellhead assembly according to claim 3, wherein the ball screw (43) has a convex structure at one end far away from the annular plate (41), and a through groove is formed at the joint of the fixed transverse plate (400) and the outer circular magnetic conductive pipe barrel (200).
  5. 5. The multi-functional antimagnetic wellhead assembly of claim 4 wherein a bump (52) is fixedly installed on one side of the top of the positioning disk (500), a positioning pin (520) is movably inserted on one side of the top of the bump (52), and a shifting block (522) is fixedly installed on the outer circumference of the positioning pin (520).
  6. 6. The multi-functional antimagnetic wellhead assembly of claim 5 wherein the annular plate (41) is provided with positioning jacks (410) at equal intervals on the circumference of the top, and a compression spring (521) is fixedly installed on the top of the shifting block (522) and one end of the top of the protruding block (52).

Description

Multifunctional antimagnetic wellhead device Technical Field The utility model relates to the technical field of cable logging, in particular to a multifunctional antimagnetic wellhead device. Background In electromagnetic logging, especially in cased wells, the residual magnetism on the well casing caused by materials and drilling construction causes the logging cable to be magnetized during the back and forth movement or residence in the casing, while in operation, the magnetic markers read the magnetic markers to determine the depth of the logging instrument in the well, if the well cable is magnetized, the magnetic markers calibrated in advance are lost or weakened, causing depth errors which are not capable of determining the logging depth, and therefore, the antimagnetic operation is required to be performed on the logging cable through the antimagnetic wellhead. For example, china patent grant bulletin No. CN201013295Y, "discloses a petroleum logging device, in particular a dual-purpose antimagnetic wellhead device applied to electromagnetic logging for preventing a logging cable from being magnetized and cleaning a viscous mixture attached to the cable, at least comprises a magnetic marker fixing frame (5) positioned at a wellhead, and a magnetic marker fixed on the magnetic marker fixing frame (5), wherein the magnetic marker is opposite to the center of the cable, and is characterized in that a wellhead support (6) is arranged on an oil well sleeve (10), an outer circular magnetic conduction tube (1) is fixed on the wellhead support (6), an inner circular magnetic conduction tube (2) is arranged on the inner circumference of the oil well sleeve (10), and a metal circular tube (3) is arranged in the inner circular magnetic conduction tube (2); The cited documents are convenient to use, small in size, light in weight and complete in function, electromagnetic logging efficiency is improved, and petroleum exploration cost is reduced. However, when the anti-magnetic wellhead in the petroleum logging equipment is in actual use, gaps exist between the outer circle magnetic conduction pipe sleeve and the wellhead, and the anti-magnetic wellhead cannot be connected and positioned with the wellhead through the original welded support at the bottom, so that the anti-magnetic wellhead cannot be fixed during logging through cable threading, and the practicability of the anti-magnetic wellhead is reduced. Disclosure of utility model The utility model aims to provide a multifunctional antimagnetic wellhead device which can realize the adaptation and adjustment of an excircle magnetic conduction pipe barrel according to petroleum wellhead measurement with different sizes, so that the antimagnetic wellhead adaptation and installation range is wider. In order to achieve the purpose, the utility model provides the technical scheme that the multifunctional antimagnetic wellhead device comprises a wellhead baffle, an outer circle magnetic conduction pipe barrel, an inner circle magnetic conduction pipe barrel and further comprises: The fixed transverse plates are fixedly arranged on the inner wall of the outer circle magnetic conduction tube at equal intervals in a circumferential manner, a plurality of groups of annular plates are welded at adjacent ends of the fixed transverse plates, movable transverse plates are slidably arranged in the fixed transverse plates, ball screws are rotatably arranged on the inner wall of the annular plates at equal intervals, the movable transverse plates are connected with the ball screws through screw thread matching, and bevel gears are fixedly arranged at one ends, far away from the movable transverse plates, of the ball screws; The positioning disc is rotatably arranged at the center of the top of the annular plate, the conical tooth disc is integrally formed on the bottom surface of the positioning disc, and the conical tooth disc is meshed with the outer edges of the bevel gears. Preferably, the hinge bracket is hinged on the outer circumference of the wellhead baffle, the brackets are welded on two sides of the outer part of the outer magnetic conduction pipe barrel respectively, a threading opening is formed in one side of the outer part of the outer magnetic conduction pipe barrel in a penetrating manner, and a thread groove is formed between the bottom pipe body of the outer magnetic conduction pipe barrel and the wellhead baffle respectively. Preferably, the fixed transverse plate is fixedly provided with a connecting plate on the inner wall close to one end of the annular plate, one side of the connecting plate close to the annular plate is rotatably provided with a ball bearing, and the ball screw is fixedly provided with the inner diameter of the ball bearing and extends into the inner wall of the movable transverse plate. Preferably, one end, far away from the annular plate, of the ball screw is of a convex structure, and a through groove is formed in the joint of the f