CN86202090U - Orient & slope guiding device for prospecting & drilling - Google Patents

Abstract

The utility model discloses an orient & slope guiding device for prospecting & drilling, which comprises a whipstock and a fishing spear. The whipstock comprises an upper clamping and fastening device, a lower clamping and fastening device and a guiding incline. The upper and lower clamping and fastening devices which are stuck with the borehole wall can move up and down along the dovetail slot of the main body with the aid of clamp keys. The whipstock has the advantages of flexible operation, high reliability and reusable ability. The fishing spear is the specific tool for dredging for the whipstock. Chuck blocks are installed on the main body with pins, when fishing, the chuck blocks push the piston, after the spring is compressed onto the steps on the internal diameter of the telescopic cylinder, the chunk blocks are forced to restore position by the spring, therefore, the telescopic cylinder is stuck and hung. When the fishing is finished, pressure is supplied by the water that driven by the thrown-in steel balls. The piston compresses the spring to drive the turning of the chuck blocks, therefore, the telescopic cylinder is unhooked. The fishing spear has the advantages of reasonable structure, simple operation, free dredging and unhooking.

Description

The exploratory bore-hole orientation is led ramp

The utility model relates to the exploratory bore-hole orientation and leads ramp.

Existing extraction formula wedge deflection tool is at wedge deflection tool bottom weldering pawl or foot piece, and the following fashionable drilling tool weight paw that leans on does not have other clamping device at the bottom of the hole.This kind wedge deflection tool can not orientation, and anti-rotation is unreliable, has the caecum hole, goes into old Kong during following drilling tool easily.Salvage and use the screw tap drilling tool.The normal band that takes place is firm and come off midway and cause next step to fish for difficulty.

Existing another kind gets rid of into the formula wedge deflection tool, with drilling tool send into get rid of in the hole fall within the hole at the bottom of, grout injection.This kind wedge deflection tool can only disposablely use, and can not salvage, and the anti-rotation performance is unreliable.

The purpose of this utility model is: aforementioned wedge deflection tool is improved, make it reach the anti-rotation dependable performance, Refloatation method is simple, flexible operation, nonexpondable purpose.

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

The ramp of leading of the present utility model is made up of wedge deflection tool (Fig. 1), fishing spear (Fig. 2).Wedge deflection tool adopts the pipe of 110 millimeters of φ to do the wedge deflection tool pipe, and its structure is divided three parts: the upper end is last clamping device, and the centre is a guiding incline, and the lower end is following clamping device.The angle of inclination of guiding incline (2) can produce the different guiding incline of angle respectively according to the drilling kick-off angle, generally to be advisable about 3 degree.Increase as the need dip angle of hole, can use continuous deflecting method to realize.The upper and lower clamping device of wedge deflection tool is used for making the wedge deflection tool and the borehole wall firmly to block, and wedge deflection tool rotates when preventing to creep into inclined hole.Last clamping device is made up of main body (1-1), card key (1-2), lock nut (1-3), retracting cylinder (1-4).The main body external diameter is 110 millimeters of φ, and internal diameter is 80 millimeters of φ, and five equilibrium digs the dovetail groove that three gradients are 6 degree on main body outer wall circumference, and three card keys are housed in the groove, blocks the key upper end and is connected on the retracting cylinder with hook, and the card key is installed the back and prevented that with the lock nut pinning card key string from going out.The effect of retracting cylinder can not only affect three card keys to move up and down, and the step of eye in hanging for fishing spear is still arranged, and drops into outside fishing spear portals the wedge deflection tool salvaging so that lead oblique ends back.Article three, the card key is to move up and down along three dovetail grooves on the main body, when the card key is in point, the card key is identical with the main body external diameter, and card key evagination is 8.2 millimeters when the card key is at following, and this moment, the maximum outside diameter of wedge deflection tool was 110 millimeters of φ+8.2 millimeters * 2=126.4 millimeter.Following clamping device by main body (3-1), block key (3-2) down and form.Dig two dovetail grooves that symmetry is arranged on the main body outer wall circumference, its inclination angle is 10 degree, under block key and move to when point 8.8 millimeters of evaginations from bottom to top, this moment, the wedge deflection tool maximum outside diameter was 110 millimeters of φ+8.8 millimeters * 2=127.6 millimeter, play card key recovery is afterwards identical with the main body external diameter.

Throwing in wedge deflection tool adopts drilling tool to send into method, wedge deflection tool connects with pin with drilling tool, when the 0.8-1 rice of distance shaft bottom, reserve the orientation with the photoelectricity direction finder, pin is cut off for when delivering to the shaft bottom pressure of 500-1000 kilogram, drilling tool and wedge deflection tool are thrown off, and force upper and lower card key evagination and well wall gripping to reach and fix the anti-rotation purpose.After leading oblique end, being lowered to Special Fishing Tools with drilling tool aims at wedge deflection tool and fishing spear is stuck in the step place upwards lifts in the retracting cylinder, last card key since retracting cylinder affect the recovery original position, play card key then is subjected to the wall friction resistance and the recovery original position that glides, and makes outside the wedge deflection tool proposition hole.

Fishing spear (Fig. 2) is the instrument that is used for salvaging wedge deflection tool specially.The main body of fishing spear (1) goes up with bearing pin (6) three fixture blocks (3) is installed, and fixture block is the rotatable certain angle in center with the bearing pin.The enemy transfers drilling tool and adds light pressure and make fixture block (3) promote piston (2) compression spring (8) and after rotating retracting cylinder (1-4) internal diameter step during salvaging, spring (8) forces fixture block (3) to reset and blocks and hangs retracting cylinder, this moment, the fixture block stress point was on main body, and not on bearing pin.Upwards lift then wedge deflection tool is proposed outside the hole.

If run into salvaging energetically, can use to take off and collude device.Taking off the method for colluding is the steel ball of throwing in φ 11-25 millimeter in fishing spear, start slush pump water filling in the hole, piston this moment (2) compression spring (8) drives fixture block (3) and rotates, the restriction of the stroke limiting position cover (4) of piston motion, when pump pressure reaches the 10-15 kilogram, it is identical with the main body external diameter that fixture block forwards to, earlier drilling tool transferred a little, carries taking off on then and collude.

Wedge deflection tool of the present utility model is simple in structure, uses flexibly, and the anti-rotation dependable performance can repeatedly be used.This fishing spear is rational in infrastructure, and is simple to operate, fishes for, takes off and collude freely.

Description of drawings:

Fig. 1 is a wedge deflection tool, wherein card main body in (1-1) expression; (1-2) the card key is gone up in expression; (1-3) expression lock nut; (1-4) expression retracting cylinder; (2) expression guiding incline; (3-1) expression blocks main body down; (3-2) expression blocks key down.

Fig. 2 is a fishing spear.Wherein (1) represents main body; (2) expression piston; (3) expression fixture block; (4) expression stop collar; (5) expression steel ball; (6) expression bearing pin; (7) expression cottor pin; (8) expression spring.

Fig. 3 is the A-A sectional view of Fig. 2.

Claims (4)

1, a kind of exploratory bore-hole orientation is led ramp, and it is made up of wedge deflection tool, fishing spear, it is characterized in that wedge deflection tool is by last clamping device, guiding incline, clamping device is formed down.

2, the ramp of leading according to claim 1 is characterized in that five equilibrium digs the dovetail grooves of three band gradients on main body (1-1) the outer wall circumference of clamping device, and three card keys (1-2) are housed in the groove; Card key upper end is associated on the retracting cylinder (1-4) with hook; The card key installs the back and pins with lock nut (1-3); The step of hanging interior eye for fishing spear is arranged at the retracting cylinder top.

3, the ramp of leading according to claim 1 is characterized in that having on the fishing spear three fixture blocks (3) to be installed on the main body (1) with bearing pin (6), and when fishing for wedge deflection tool, the fixture block stress point is on main body.

4, according to claim 1, the 3 described ramps of leading, there are piston (2), spring (8), stop collar (4) in the main center that it is characterized in that fishing spear, take off the steel ball of throwing in 25 millimeters of φ 11-φ when colluding to the fishing spear center, give pressure with the slush pump water filling, force piston compression spring to drive fixture block to spacing point and rotate, fixture block shrinks and plucks and collude.

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