CN-122014139-A - Drill bit salvaging device applied to drilling construction

CN122014139ACN 122014139 ACN122014139 ACN 122014139ACN-122014139-A

Abstract

The invention discloses a drill bit salvaging device applied to drilling construction, which relates to the technical field of drilling construction and comprises a drill bit main body, a salvaging mechanism and a salvaging mechanism, wherein the drill bit main body comprises a threaded end fixedly connected to the upper end of the drill bit main body, the surface of the drill bit main body is provided with a salvaging groove, the salvaging mechanism is arranged on the drill bit main body and comprises a column body positioned at the upper end of the threaded end, the upper end of the column body is fixedly provided with a connecting end, a centralizing positioning piece, a driving piece and a linkage piece are respectively arranged on the column body, and the driving piece is respectively matched with the centralizing positioning piece and the linkage piece. According to the invention, through a double centralizing mechanism, the primary centralizing is realized by means of the centralizing hook inclined plane, and then the secondary accurate centralizing is completed by synchronously closing multiple hooks, so that the problem that the inclined and adherent drill bit is difficult to position is effectively solved.

Inventors

ZHAO YICHAO
WANG QIANG
SONG CHAOYANG
LIU QUANHUI
DU SHANGYU
CAO YU
Lv Zhenghui
ZHANG GUANGYU

Assignees

陕西延长石油矿业有限责任公司
天地科技股份有限公司
北京中煤矿山工程有限公司

Dates

Publication Date: 20260512
Application Date: 20251216

Claims (10)

1. A drill bit salvaging device applied to drilling construction is characterized by comprising, The drill bit body (1) comprises a threaded end (11) fixedly connected to the upper end of the drill bit body, and a salvage groove (12) is formed in the surface of the drill bit body (1); Salvaging mechanism (2), set up on bit body (1), including cylinder (21) that is located screw thread end (11) upper end, cylinder (21) upper end is fixed with link (22), install righting setting element (23), driving piece (24) and interlock piece (25) on cylinder (21) respectively, driving piece (24) cooperate with righting setting element (23) and interlock piece (25) respectively, install centering mounting (26) on interlock piece (25), and centering mounting (26) cooperate with screw thread end (11), install spacing piece (27) on cylinder (21), and spacing piece (27) cooperate with driving piece (24), install link (28) between centering mounting (26) and righting setting element (23), and And the drill rod (3) is connected to the connecting end (22) in a threaded manner.
2. The device for fishing the drill bit for well drilling construction according to claim 1, wherein the righting positioning member (23) comprises a supporting frame (231) fixed on the surface of the column body (21), an I-shaped block (232) is slid on the supporting frame (231), a short column (2328) is fixed at the top of the I-shaped block (232), the short column (2328) is matched with the driving member (24), a righting hook (233) is fixed at the bottom of the I-shaped block (232), the righting hook (233) is matched with the drill bit main body (1) and the fishing groove (12), a clamping block (234) is slid on the lower end surface of the righting hook (233), a groove body I (235) is formed on the lower end surface of the righting hook (233), a square column (236) is slid in the groove body I (235), one end of the square column (236) is fixed on one side of the clamping block (234), and a spring piece I (237) is fixed between the surface of the clamping block (234) and the surface of the righting hook (233).
3. The device for fishing the drill bit for well drilling construction of claim 2, wherein the second slot body (238) and the third slot body (2312) are respectively arranged in the righting hook (233), the round hole (239) is formed in the lower end surface of the righting hook (233), the second slot body (238) is respectively communicated with the round hole (239) and the third slot body (2312), the pressing block (2310) is arranged in the second slot body (238) in a sliding mode, the moving plate (2311) is arranged in the third slot body (2312) in a sliding mode, the triggering post (2318) is arranged on the clamping block (234) in a sliding mode, the pressing block (2310) is respectively matched with the triggering post (2318) and the moving plate (2311), the groove (2313) is formed in the upper end surface of the I-shaped block (232) and the righting hook (233), the L-shaped block (2314) is fixed on the upper end surface of the moving plate (2311), the pressing block (2315) is fixed on the other end surface of the L-shaped block (2314), and the rubber pad (2316) is arranged on the bottom of the pressing block (2316) in a sliding mode.
4. The device for fishing the drill bit for well drilling construction according to claim 2, wherein the driving piece (24) comprises a rotary table (241) which rotates in a column body (21), an arc-shaped frame (242) is arranged on the column body (21) in a sliding mode, one end of the arc-shaped frame (242) is fixed on the surface of the rotary table (241), the arc-shaped frame (242) is sleeved on the surface of a short column (2328) and matched with the short column, driving columns (243) are arranged on the column body (21) and the rotary table (241) in a sliding mode, driving grooves (244) and limiting grooves (245) are respectively formed in the surface of the driving columns (243), balls (246) are embedded in the inner surface of the rotary table (241), conical blocks (247) are fixed at the upper end of the driving columns (243), the limiting pieces (27) are matched with the conical blocks (247), limiting blocks (248) are fixed on the inner wall of the column body (21), the limiting blocks (248) are sliding in the limiting grooves (245), the lower ends of the driving columns (243) are provided with pressing blocks (249), and the pressing blocks (249) are matched with the threaded ends (11).
5. The device for fishing the drill bit applied to well drilling construction according to claim 4, wherein the linkage part (25) comprises a fixed block (251) fixed at the bottom of the column body (21), a rotary column (252) is rotated on the fixed block (251), a connecting plate (253) is sleeved on the surface of the rotary column (252), a centering fixed part (26) is fixed at one end of the connecting plate (253), a round block (254) is sleeved on the surface of the upper end of the driving column (243), a connecting block (255) is slidingly arranged on the inner wall of the column body (21), one end of the connecting block (255) is fixed on the surface of the round block (254), a steel rope (256) is fixed at the bottom of the connecting block (255), the lower end of the steel rope (256) penetrates through the rotary disc (241) and the column body (21) and is fixed on the surface of the centering fixed part (26), a pulley (257) is rotated at the bottom of the column body (21), and the pulley (257) is matched with the steel rope (256).
6. The device for fishing the drill bit applied to drilling construction of claim 5, wherein the centering fixing piece (26) comprises an arc plate (261) fixed at one end of the connecting plate (253), the lower end of the steel rope (256) is fixed on the surface of the arc plate (261), the surface of the arc plate (261) is provided with a toothed plate (262) in a sliding mode, the toothed plate (262) is matched with the threaded end (11), a T-shaped groove (263) is formed in the arc plate (261), a T-shaped block (264) is fixed on one side of the toothed plate (262), the T-shaped block (264) is slid in the T-shaped groove (263), a circular groove (265) is formed in the inner wall of the T-shaped groove (263), a second spring (267) is fixed between the surface of the T-shaped block (264) and the inner wall of the circular groove (265), an arc groove I (268) and an arc groove II (269) are formed in the arc plate (261), an arc block 2610) is slid in the arc groove I (268), and an arc-shaped block 2610) is matched with the arc surface of the arc block 2611.
7. The device for fishing a drill bit for well drilling construction according to claim 6, wherein an anti-falling groove (2612) is formed in the inner wall of the first arc-shaped groove (268), an anti-falling block (2613) is fixed on the surface of the first arc-shaped block (2610), the anti-falling block (2613) slides in the anti-falling groove (2612), a fixing bolt (2614) is connected to the arc-shaped plate (261) in a threaded mode, the fixing bolt (2614) is matched with the first arc-shaped block (2610), and a handle (266) is fixed on the surface of the first arc-shaped block (2610).
8. The device for salvaging drill bits for well drilling construction of claim 4, wherein the limiting piece (27) comprises a square groove (271) formed in the inner wall of the column body (21), a clamping plate (272) slides in the square groove (271) and is matched with the conical block (247), a spring three (273) is fixed between the surface of the clamping plate (272) and the inner wall of the square groove (271), a through groove (274) is formed in the clamping plate (272), square rods (275) slide on the column body (21) and the clamping plate (272), a pull block (276) is fixed at one end of the square rods (275) in the through groove (274), the pull block (276) is matched with the clamping plate (272), a rotating frame (277) rotates on the surface of the column body (21), a guide groove (278) is formed in the inner wall of the rotating frame (277), a guide pillar (279) is fixed at one end of the rotating frame (277), and the guide pillar (279) slides in the guide groove (278).
9. The device for salvaging drill bits for well drilling construction of claim 8, wherein the handle groove (2710) is formed in the surface of the rotary frame (277), the positioning groove (2711) is formed in the inner wall of the square groove (271), the positioning block (2712) is fixed on the surface of the clamping plate (272), and the positioning block (2712) slides in the positioning groove (2711).
10. The device for fishing a drill bit for well drilling construction according to claim 6, wherein the linkage member (28) comprises a reinforcing plate (281) fixed on the surface of the centralizing hook (233), a sliding hole (282) is formed in the surface of the reinforcing plate (281), a linkage plate (283) is fixed on the surface of the arc-shaped plate (261), a sliding column (284) is fixed at one end of the linkage plate (283), and the sliding column (284) slides in the sliding hole (282).

Description

Drill bit salvaging device applied to drilling construction Technical Field The invention relates to the technical field of drilling construction, in particular to a drill bit salvaging device applied to drilling construction. Background In drilling construction, the drill bit is easy to fall off, incline and other faults due to complex geology, ageing equipment or improper operation, and needs to be recovered through a salvaging device to avoid the scrapping of the well. However, in practical application, some problems still remain which are not solved, namely the common problems of the bit salvaging device applied to drilling construction are that firstly, the righting capability of an inclined bit is weak, most devices can only salvage the bit in a vertical state, the inclined bit is easy to salvage failure or secondarily damage a well wall due to uneven stress, secondly, the fixing stability is poor, the conventional device depends on single hook claw or clamp for fixing, the bit is easy to fall off in the salvaging process, particularly the risk is higher in a deep well or high-pressure environment, thirdly, the operation is complex, the position and the fixing structure of the device are required to be manually and repeatedly adjusted, and the efficiency is low when the bit with different postures is adapted. Disclosure of Invention This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application. The present invention has been made in view of the above and/or existing problems in the fishing devices for drill bits used in drilling construction. Therefore, the invention aims to solve the problems of difficult centralizing of the inclined drill bit, insufficient stability of fixing the drill bit, complex operation and poor suitability. The invention provides a drill bit salvaging device for drilling construction, which comprises a drill bit main body, a salvaging mechanism and a drill rod, wherein the drill bit main body comprises a threaded end fixedly connected to the upper end of the drill bit main body, a salvaging groove is formed in the surface of the drill bit main body, the salvaging mechanism is arranged on the drill bit main body and comprises a cylinder positioned at the upper end of the threaded end, a connecting end is fixedly arranged at the upper end of the cylinder, a centralizing locating piece, a driving piece and a linkage piece are respectively arranged on the cylinder, the driving piece is respectively matched with the centralizing locating piece and the linkage piece, a centering fixing piece is arranged on the linkage piece and matched with the threaded end, a limiting piece is arranged on the cylinder, and the linkage rod is connected to the connecting end in a threaded mode. The invention relates to a drill bit salvaging device applied to drilling construction, which is characterized in that a centralizing positioning piece comprises a supporting frame fixed on the surface of a column body, an I-shaped block is fixed on the supporting frame in a sliding mode, a short column is fixed at the top of the I-shaped block and matched with a driving piece, a centralizing hook is fixed at the bottom of the I-shaped block and matched with a drill bit main body and a salvaging groove, a clamping block is arranged on the surface of the lower end of the centralizing hook in a sliding mode, a groove body I is arranged on the surface of the lower end of the centralizing hook, a square column is arranged in the groove body I in a sliding mode, one end of the square column is fixed on one side of the clamping block, and a spring piece I is fixed between the surface of the clamping block and the surface of the centralizing hook. The invention relates to a drill bit salvaging device applied to drilling construction, which is characterized in that a second groove body and a third groove body are respectively arranged in a righting hook, a round hole is formed in the lower end surface of the righting hook, the second groove body is respectively communicated with the round hole and the third groove body, an extrusion block slides in the second groove body, a moving plate slides in the third groove body, a trigger post slides on a clamping block, the extrusion block is respectively matched with the trigger post and the moving plate, a groove is formed in the I-shaped block, an L-shaped block slides on the I-shaped block and the righting hook, one end of the L-shaped block is fixed on the upper end surface of the moving plate, a retaining plate is fixed at the other end of the retaining plate, a tooth slot is formed in the bottom of the supporting frame, and the rubber pad is matched with the tooth slot. The invention relates t