CN203334954U

CN203334954U - Drilling device with laser drill bit

Info

Publication number: CN203334954U
Application number: CN2013204306746U
Authority: CN
Inventors: 李思琪; 闫铁; 李玮; 徐艳坤; 霍明宇; 杨斌
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2013-12-11
Anticipated expiration: 2023-07-19

Abstract

The utility model relates to a drilling device with a laser drill. The drilling device with a laser drill includes a laser driver, a laser generator, and a laser drill. The laser driver and the laser generator are all located in the drill pipe. The laser driver and the laser The generator is connected by a cable, and the laser generator and the laser drill are connected by a fiber optic cable; the laser drill is composed of a laser head, a tricone drill or a PDC drill, and a shutter, and the laser head is embedded in the inner axis of the tricone or PDC drill. , the shutter is set at the bottom of the tricone bit, and the shutter is perpendicular to the laser head. The utility model can greatly reduce the wear of the drill bit and prolong the life of the drill tool.

Description

A kind of drilling rig with laser drill head

Technical field:

The utility model relates to the drilling rig in the petroleum gas engineering field, what be specifically related to is a kind of drilling rig with laser drill head.

Background technology:

Along with the raising of drilling depth requirement and the increase of drilling strata complexity, existing catalase technology more and more can not meet the drilling well demand.The catalase technology refers to that the motion modes such as rotation by rock crushing tool, impact, shearing realize catalase.These rock breaking methods are at the broken formation rock and in obtaining the process of certain rate of penetration, and self wearing and tearing of meeting generating tool, cause a large amount of instrument consumption.Deep formation below 1000m, especially run into special height grinding, high drillability stratum, and the consumption of instrument is very huge.The instrument cost tends to account for more than 10% of drilling cost.

Before the present invention makes, rock bit commonly used, drag bit and PDC drill bit be as rock crushing tool, but every kind of drill bit has the restriction of its scope of application: rock bit can be used for soft to hardpan, but efficiency of breaking rock is not high; Drag bit is applicable to soft-medium hard formation, bores while meeting than hard formation or the staggered interlayer of soft or hard, and drill bit wedging difficulty, drilling efficiency is low; The PDC drill bit creeps into that hardness is large, there will be cutting teeth to come off during the high stratum of abrasiveness, delamination, broken teeth, the problem such as cracked.Drill tool life has been shortened in wearing and tearing and inefficacy that common drill bit occurs, has increased greatly drilling cost, has extended drilling period.

Summary of the invention:

The purpose of this utility model is to provide a kind of drilling rig with laser drill head, and it is for solving the problem that the conventional drilling cost is high, drill tool life is short.

The utility model solves the technical scheme that its technical problem adopts: this drilling rig with laser drill head comprises laser driver, laser generator, laser drill head, laser driver, laser generator all are positioned at drilling rod, laser driver is connected by cable with laser generator, and laser generator is connected by fibre-optic cable with laser drill head; Laser drill head is comprised of laser head, tricone bit or PDC drill bit, shutter, and laser head is embedded in vacancy in the internal axis of tricone bit or PDC drill bit, and shutter is arranged at the tricone bit bottom, and shutter is perpendicular to laser head.

In such scheme, laser driver is down-hole motor, for the driving laser generator, works.

In such scheme, laser generator is laser generating tube, for generation of the broken required laser beam of rock, needs to use the high power laser light generator tube.

The utlity model has following beneficial effect:

1, the utility model can greatly reduce bit wear, extends drill tool life.

The working forms that the utility model makes the original simple mechanical of drill bit break rock is transformed into take laser high temperature melting rock as main, and the drill bit mechanical rock breaking is auxiliary.Regardless of the drilling strata lithology, all can reach the purpose of light fragmentation, eliminated the problem that rock bit and PDC bit wear lost efficacy, and same generating device of laser can reuse, extended the application life of drilling tool.

2, the utility model can reduce the number of times made a trip, and significantly improves rate of penetration, reduces drilling cost.

The utility model has extended the application life of drill bit, under the condition occurred without special circumstances, can be applied to the operation of whole mouthful of well, has greatly reduced the number of times made a trip.Simultaneously, laser drill head high temperature melting rock is higher than the conventional bit crushing grinding, and plasticity is strong, and the high stratum of hardness efficiency obviously improves, and significantly improves rate of penetration, thereby reduces drilling cost.

3, the utility model can be adapted to various lithologic character stratums, and various well types, be widely used.

The utility model mainly be take the high temperature melting rock as main, and conventional bit mainly helps out, therefore all applicable to various lithologic character stratums, without because of lithology, drill bit being had higher requirements.Simultaneously, the utility model is simple in structure, applicable to creeping into of the various well types such as level, peupendicular hole, directional well.

The accompanying drawing explanation

Fig. 1 is the structural representation of laser drill head in the utility model;

Fig. 2 is the configuration diagram of the drilling rig supporting with laser drill head.

1 laser driver 2 cable 3 laser generator 4 fibre-optic cable 5 drilling rod 6 laser drill head 7 laser head 8 tricone bit 9 shutter 10 hydrophthalmia 11 rocks.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further:

As shown in Figure 1, this drilling rig with laser drill head comprises 6 of laser drivers 1, laser generator 3, laser drilling, laser driver 1, laser generator 3 all are positioned at drilling rod 5, laser driver 1 is connected by cable 2 with laser generator 3, and cable 2 is for transmitting the signal of telecommunication to laser generator 3; Laser generator 3 is connected by fibre-optic cable 4 with laser drill head 6, and fibre-optic cable 4, for the transfer laser light beam, is controlled energy, transmission information; Laser driver 1 is down-hole motor, and laser generator 3 is laser generating tube.Consult Fig. 2, laser drill head 6 is comprised of laser head 7, tricone bit 8 or PDC drill bit, shutter 9, and laser head 7 is embedded in vacancy in the internal axis of tricone bit 8 or PDC drill bit, and shutter 9 is arranged at tricone bit 8 bottoms, and shutter 9 is perpendicular to laser head 7.Shutter 9, for protection laser head 7 designs, places it in laser drill head 6 bottoms, and material is identical with laser drill head 6 to be got final product.

The utility model workflow is specially:

Connect down-hole motor by externally fed equipment, down-hole motor is by downhole cable 2 for laser generating tube provides the signal of telecommunication, and driving laser generator tube radiation photon, produce laser beam.Down-hole motor adopts and to be widely used in now the type in geosteering or vertical drilling, requires more than power output can reach 1000W, to meet laser generating tube normal operation requirement.Laser generating tube is diode laser, enough small and exquisite, whole laser engine can be put into to downhole tool.Laser beam passes on the laser head 7 in laser drill head 6 by fibre-optic cable 4.

Laser head 7 is that laser beam acts on the delivery outlet on rock 11.Laser head 7 is adjusted lase by the photon scioptics group received, and by the shutter 9 be positioned on laser drill head 6, directly acts on bottom rock 11.When not using laser head 7, as, in the process that makes a trip, shutter 9 is closed, and it can stop the landwaste fluid to enter laser head 7, also can prevent that back pressure or overflow from destroying laser head 7.During drilling well, shutter 9 is opened, and the light beam of exporting by laser head 7 acts on bottom rock 11 by shutter 9 again, realizes the broken rock effect of laser drill head 6.Finally, the suction pipe on laser drill head 6 is bit port 10 by the cleaning of the particle of drilled area, by circulation of drilling fluid to well.

Claims

1. A drilling device with a laser drill, characterized in that: this drilling device with a laser drill includes a laser driver (1), a laser generator (3), a laser drill (6), a laser driver (1), a laser The generators (3) are all located inside the drill pipe (5), the laser driver (1) is connected to the laser generator (3) through a cable (2), and the laser generator (3) and the laser drill bit (6) are connected through a fiber optic cable (4 ) connection; the laser drill (6) consists of a laser head (7), a tricone drill (8) or a PDC drill, and a shutter (9), and the laser head (7) is embedded in the tricone drill (8) or PDC drill In the hollow of the inner axis, the shutter (9) is set at the bottom of the tricone bit (8), and the shutter (9) is perpendicular to the laser head (7).

2. The drilling device with a laser drill bit according to claim 2, characterized in that: the laser driver (1) is a downhole motor.

3. The drilling device with a laser drill according to claim 1 or 2, characterized in that: the laser generator (3) is a laser generator tube.