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A kind of combined pdc drill bit for drilling and using method thereof

A combined drill bit technology, applied in the direction of drill bits, earthwork drilling, drilling equipment, etc., can solve the problems of inconvenient installation and transportation of drill bits, inconvenient removal of rock and soil cores, weak drill bit assembly ability, etc., to achieve convenient transportation and reduce Occupies space and increases airtightness

Active Publication Date: 2021-01-26
胜利油田固邦石油装备有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned existing drill bit, after sampling, the rock soil core inside it is inconvenient to take out, resulting in slower working efficiency, and at the same time, the assembly ability of the drill bit is relatively weak, resulting in the technical problem that the drill bit is inconvenient to install and transport, the purpose of the present invention To provide a combined PDC drill bit for drilling

Method used

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  • A kind of combined pdc drill bit for drilling and using method thereof
  • A kind of combined pdc drill bit for drilling and using method thereof
  • A kind of combined pdc drill bit for drilling and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Set the core pipe 5 on the upper side of the drill steel body 1. When setting, insert the raised block 18 of the drill steel body 1 into the embedding groove 21 of the core pipe 5, and then use the connecting bolt 22 to thread The hole 20 fixes the drill bit steel body 1 and the core tube 5. After the fixation is completed, the side of the connecting tube 19 will fit on the inner wall of the reducing groove 25 inside the core tube 5. At the same time, the reducing tube 24 will Embedded in the running water tank 12, and the variable-diameter spacer 24 seals the connection between the first spacer 17 and the second spacer 23, and the connector is threaded on the top of the core pipe 5, and the connector and the driving device are connected. The output end is assembled. Compared with the existing connecting member, the connector in the present invention adds a threaded connection groove at the bottom for connecting with the core tube 5;

[0042] When drilling, the broken r...

Embodiment 2

[0045] Set the core pipe 5 on the upper side of the drill steel body 1. When setting, insert the raised block 18 of the drill steel body 1 into the embedding groove 21 of the core pipe 5, and then use the connecting bolt 22 to thread The hole 20 fixes the drill bit steel body 1 and the core tube 5. After the fixation is completed, the side of the connecting tube 19 will fit on the inner wall of the reducing groove 25 inside the core tube 5. At the same time, the reducing tube 24 will Embedded in the running water tank 12, and the variable-diameter spacer 24 seals the connection between the first spacer 17 and the second spacer 23, and the connector is threaded on the top of the core pipe 5, and the connector and the driving device are connected. The output terminal is assembled;

[0046] When drilling, the broken rock and soil enter the inside of the drill bit from the feeding trough 14, and the rock and soil are further broken when passing through the bent part of the feeding...

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Abstract

The invention discloses a combined PDC drill bit for drilling and its use method, and relates to the technical field of oil exploitation equipment, comprising a drill bit steel body, the bottom end of the side of the drill bit steel body is fixedly connected with several fins, the drill bit The top of the steel body is equipped with a coring tube, the top of the side of the core tube is fixedly connected with a side ring, and the top of the core tube is threaded with a threaded sleeve, and the side of the core tube is close to the lower side of the side ring. Several slag outlets communicate with the inner cavity, and the bottom end of the threaded sleeve is close to the upper side of the side ring. In this device, the connecting part of the steel body of the drill bit and the core pipe is provided with a raised block and an embedded groove, so as to prevent the misalignment or slippage between the two groups of components during drilling. The core pipe and the steel body of the drill bit The interior of the drill bit is separated by a spacer, which divides the inner area into a coring area and a water flow area. A variable-diameter spacer is provided at the connection between the core pipe and the steel body of the drill bit, which can increase the sealing of the water flow area.

Description

technical field [0001] The invention relates to the technical field of oil exploitation equipment, in particular to a combined PDC drill bit for drilling and a use method thereof. Background technique [0002] Core drilling is an exploration method often used in geological exploration of solid minerals. The cylindrical drill bit and the drilling tool break the rock in a circular ring at the bottom of the hole, and a columnar core is kept in the center of the hole bottom, and the core is taken out from the hole to study the geological and mineral conditions. In oil drilling, it is used for drilling Core drills are commonly called core drills. There are many types of core drills, and the structure is also very different. Generally, there are roller core drills, scraper core drills and cylindrical core drills, which directly affect the core recovery rate. Diamond drill bits have a wide range of applications, and can drill into various strata with rock and soil drillability ran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/42E21B10/54E21B10/02E21B10/60E21B25/10
CPCE21B10/02E21B10/42E21B10/54E21B10/602E21B25/10
Inventor 郭伊楠黄金刚刘书林刘国富宋文杰李海泉
Owner 胜利油田固邦石油装备有限责任公司