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CN-121993046-A - Telescopic drill rod supporting device and offshore directional drilling system

CN121993046ACN 121993046 ACN121993046 ACN 121993046ACN-121993046-A

Abstract

The invention relates to the field of ocean engineering, in particular to a telescopic drill rod supporting device and an offshore directional drilling system, and aims to solve the technical problem of low construction efficiency of the offshore directional drilling in the related technology. The telescopic drill rod supporting device comprises a supporting ship, a plurality of sections of supporting boxes, a floating box and a driving mechanism, wherein the supporting boxes are distributed in a straight line and are connected to form a supporting unit, one end of the supporting unit is hinged to a stern of the supporting ship, the floating box is arranged at one end of each section of supporting box far away from the supporting ship, and the driving mechanism is arranged between two adjacent supporting boxes and used for driving one section of supporting box far away from the supporting ship in the two adjacent supporting boxes to retract or extend out of the other section of supporting box. The offshore directional drilling system comprises a telescopic drill rod support device. The telescopic drill rod supporting device can realize quick construction and withdraw of the offshore directional drilling system, improves the efficiency of offshore directional drilling operation, and simultaneously can ensure the safety and reliability of offshore directional drilling operation.

Inventors

  • ZHU YANSHUN
  • DUAN GUOWEI
  • LI PENGFEI
  • CUI ZHIYUN
  • LI BO
  • LI XU
  • ZHU KAIYI

Assignees

  • 中国石油管道局工程有限公司
  • 中国石油天然气集团有限公司
  • 天津大港油田集团工程建设有限责任公司
  • 中国石油天然气管道工程有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (10)

  1. 1. A telescopic drill rod supporting device is characterized by comprising a supporting ship (100), a plurality of sections of supporting boxes (200), a floating box (300) and a driving mechanism (400), wherein the supporting boxes (200) are distributed in a straight line and are connected to form a supporting unit, one end of each supporting unit is hinged to a stern of the supporting ship (100), the floating box (300) is arranged at one end, far away from the supporting ship (100), of each supporting box (200), and the driving mechanism (400) is arranged between two adjacent supporting boxes (200) and is used for driving the supporting boxes (200) to move, so that one section of the supporting boxes (200) far away from the supporting ship (100) is retracted or extended out of the other supporting box (200).
  2. 2. The telescopic drill rod support apparatus of claim 1, wherein the drive mechanism (400) comprises a gear (410), a rack (420), and a rotary drive (430); In two adjacent supporting boxes (200), the gear (410) is rotatably connected with one section of the supporting boxes (200) close to the supporting ship (100), the rack (420) is meshed with the gear (410) and fixed on the other section of the supporting boxes (200), the extending direction of the rack is consistent with the length direction of the supporting boxes (200), and the rotary driver (430) is fixed on one section of the supporting boxes (200) close to the supporting ship (100) and is in transmission connection with the gear (410).
  3. 3. The telescopic drill rod supporting apparatus according to claim 1, wherein, in two adjacent supporting boxes (200), one supporting box (200) adjacent to the supporting ship (100) is provided with a set of rollers (500) on its two opposite inner walls, a gap is provided between the inner wall and the outer wall of the other supporting box (200), and the other supporting box (200) is in rolling fit with the rollers (500) under the retraction or extension working condition.
  4. 4. The telescopic drill rod support device according to claim 1, wherein a support assembly (600) is provided on the support box (200) to support a sleeve (700); -on the supporting box (200) close to the support vessel (100), a plurality of said supporting assemblies (600) are spaced apart along the length of the supporting box (200); On the remaining support tanks (200), the support assembly (600) is at an end of the support tank (200) remote from the support vessel (100).
  5. 5. The telescopic drill rod support device of claim 4, wherein the support assembly (600) comprises a support frame (610) and two carrier rollers (620); The two carrier rollers (620) are distributed at intervals to form a V shape, and are both rotationally connected with the support frame (610) so as to be rotatable around respective axes thereof.
  6. 6. The telescopic drill rod support device according to claim 5, wherein the support frame (610) is slidingly connected to the support box (200) and the sliding path coincides with the angular bisector of the V-shape; The supporting assembly (600) further comprises a linear driver (630), the linear driver (630) is fixed on the supporting box (200), and the output part of the linear driver is connected with the supporting frame (610) so as to drive the supporting frame (610) to move on the sliding path.
  7. 7. The telescopic drill rod support apparatus of claim 5, wherein the support assembly (600) further comprises a stop member (640), the stop member (640) being connected to the support frame (610) and covering an opening formed by two of the carrier rollers (620).
  8. 8. The retractable drill rod support apparatus of claim 1, wherein the buoyancy tank (300) comprises a tank body (310), a water inlet/air valve (320), a water outlet valve (330), and an air outlet valve (340); the box body (310) is fixed on the supporting box (200); the water inlet/air valve (320), the water outlet valve (330) and the air outlet valve (340) are all connected to the box body (310); the support ship (100) is provided with a pressure transfer pump (800), and the pressure transfer pump (800) is connected with the water inlet/air valve (320) through a connecting pipe (900).
  9. 9. The telescopic drill rod support device according to any one of claims 1 to 8, further comprising a stiffener (1000) and a crane (1100); one end of the reinforcing rod (1000) is hinged with the stern, and the other end of the reinforcing rod is connected with a section of the supporting box (200) close to the supporting ship (100); the crane (1100) is arranged on the supporting ship (100), and the lifting hook of the crane is connected with a section of the supporting box (200) close to the supporting ship (100) through a steel wire rope.
  10. 10. An offshore directional drilling system comprising a casing (700), a drilling rig (1200) and a telescopic drill rod support according to any of claims 1 to 9; -the sleeve (700) is placed on the support box (200); the drilling machine (1200) is arranged on the supporting ship (100), and a drill rod of the drilling machine penetrates through the sleeve (700).

Description

Telescopic drill rod supporting device and offshore directional drilling system Technical Field The invention relates to the field of ocean engineering, in particular to a telescopic drill rod supporting device and an offshore directional drilling system. Background With further development of offshore oil and gas resources, marine pipeline laying environments are more and more complex, pipeline crossing channels, built pipelines, optical cables and other sections are more and more increased, and conventional ditching subsidence can not meet construction requirements. Therefore, the sea-to-sea/land-to-sea directional drilling and crossing application technology is continuously expanded in the field of marine pipeline laying, so that the problems that marine pipelines cross seawalls, channels, optical cables, pipelines, flushing areas, barriers and the like are solved, and the influence of submarine pipeline engineering construction on marine environments is minimized. The construction mode of the offshore directional drill is mainly a barge and pile opposite drill rod supporting system, namely, a plurality of rows of supporting piles are arranged at the offshore directional drilling soil point, a cross beam and a chain block are arranged between the opposite piles to adjust the posture of the sleeve in water, and the drill rod drills a guide hole under the restraint of the inside of the sleeve. The method needs to construct and drive the limit piles in advance, seriously affects the construction time, occupies a large amount of construction resources, and cannot be quickly transferred. Disclosure of Invention The invention aims to provide a telescopic drill rod supporting device and an offshore directional drilling system, so as to solve the technical problem of low construction efficiency of the offshore directional drilling in the related art. In order to solve the technical problems, the technical scheme provided by the invention is as follows: The telescopic drill rod supporting device comprises a supporting ship, a plurality of sections of supporting boxes, a floating box and a driving mechanism, wherein the supporting boxes are linearly distributed and connected to form a supporting unit, one end of each supporting unit is hinged to a stern of the supporting ship, the floating box is arranged at one end, far away from the supporting ship, of each supporting box, and the driving mechanism is arranged between two adjacent supporting boxes and used for driving the supporting boxes to move, so that one supporting box far away from the supporting ship is retracted into or extends out of the other supporting box. Further, the driving mechanism comprises a gear, a rack and a rotary driver; in two adjacent supporting boxes, the gear is rotationally connected with one section of the supporting box close to the supporting ship, the rack is meshed with the gear and fixed on the other section of the supporting box, the extending direction of the rack is consistent with the length direction of the supporting box, and the rotary driver is fixed on one section of the supporting box close to the supporting ship and connected with the gear in a transmission mode. Further, in two adjacent supporting boxes, a group of rollers are respectively arranged on two opposite inner walls of one supporting box close to the supporting ship, a gap is reserved between the inner wall of the supporting box and the outer wall of the other supporting box, and the other supporting box is in rolling fit with the rollers under the retraction or extension working condition. Further, a supporting component is arranged on the supporting box so as to support the sleeve; On the supporting box close to the supporting ship, a plurality of supporting components are distributed at intervals along the length direction of the supporting box; on the remaining support tanks, the support assembly is at an end of the support tank remote from the holding vessel. Further, the supporting component comprises a supporting frame and two carrier rollers; The two carrier rollers are distributed at intervals to form a V shape and are both rotationally connected with the support frame so as to rotate around the respective axes. Further, the support frame is in sliding connection with the support box, and the sliding path is overlapped with the angular bisector of the V shape; The support assembly further comprises a linear driver, the linear driver is fixed to the support box, and the output portion of the linear driver is connected with the support frame so as to drive the support frame to move on the sliding path. Further, the support assembly further comprises a limiting piece, wherein the limiting piece is connected to the support frame and covers an opening formed by the two support rollers. Further, the buoyancy tank comprises a tank body, a water inlet/air valve, a water outlet valve and an air outlet valve; The box body is fixed on the supporting box; the