SU744226A1 - Method of orienting fan of wells - Google Patents

Description

(54) METHOD OF ORIENTING WELLS OF WELLS The invention relates to the technology of drilling wells mainly in the mining industry in underground conditions. It is well known that the well weights are orientated with the help of survey tools il. However, this method has significant drawbacks: the complexity and laboriousness of field and office work, the lack of instrumental communication of the instrument sighting axis with the axis of the orientable object, a large amount of linear and angular measurements with a small base on the orientated object. Due to the noted deficiencies, the indicated method does not provide the required accuracy and the necessary labor intensity. Orientation of well fans can be carried out by eye using plumb line 2. However, this method does not ensure the accuracy of well placement in the fan and does not allow determining and eliminating the angular deviations arising in drilling. The purpose of the invention is to pursue the accuracy of borehole placement in a rock massif by determining the borehole direction before and after zaburkiv. For this, the actual position of the vertical plane and the plane of rotation of the drill bit, the Xyx passage through its geometrical axis, then in the vertical plane under one and the bodies: same angle to the axis of the drilling axis (ar and pa opposite sides of the mine A point coordinated to the rig is installed, and the correctional deviations are performed by moving the drill string to the pole, parallel to the set point before drilling. Novka to Zab r.ivann, top view, in Fig. 2 - section A-A, in Fig. 1, in Fig. 3 - section BB in Fig. 2, in Fig. 4 - drilling installation of the grill, Figure 5 shows a section B-B, Fig. 4. The drawings show the main elements. A drilling rig for underground drilling includes a stand / distance column, a drilling machine (unit) 2, a console 3 distance column , drill bit d /, mechanism 5 of rotation of the idol with a drilling machine around the spacer column. Mechanism 6 changes the angle of installation of the axis of the spacer KOLO.NKI relative to the zenith, Solution 7, which allows to fix: a vertical plane passing through the geometric axis of the drill string and having an oriented element, allowing to mark its direction on the machine tools (O-Oj - points of the design azimuth applied to the working surface ).

On the drilling joint, 4, prior to drilling the wells, install device 7, by means of which the position of the vertical plane passing through the geometrical axis of the drilling rig is found. At points O0i (eat. Fig. 1) on the walls of the drilling workout mark its real direction (position I). Then, with known operations and operations, the drilling rig is rotated into a position parallel to the design of the mine (state, I). Then, if necessary, moving from the drilling rig along the console 3 up to the joint, not a vertical plane, Rokhe1, it, through the geometric axis of the drill, to it, with dot 1n OOi (position III).

After the orientation plane of the Bcejia plane, in azimuth, the position of the device 7 is not changed, the drilling machine 2 is rotated around the console so that the buoyant projectile is directed to the part of the drilling wall (see Fig. 3, position IV ). From one installation of the device 7, turning the oriented element by the angle p ,, mark the position of the vertical blade passing through the geometric axis of the drill bit in the upper part of the working place at point Og (see Fig. 2) and at the lower point Oa at the level of the lower part of the spacer column, as a result of this, the zenith direction of this plane is observed on the wall of the mine line. The angular 1 and linear measurements mark the design direction of the fan flatness relative to the zenith of the OO at an angle of c. Esl: this is vertical, then the line coincides with the line. After the lower fixation, the vertical position of the rock plane, the drill bit, and the device and the device are rotated around the console .J up lia is the angle φn so that the rotary plane of the drill rim rotation is noted on the working wall at a point approximately at the point ( position V).

In order to prevent angular deviations relative to the zenith by the mechanism 6 by adjusting operations, the point is aligned with the point, as a result, the angular deviation D0 and the plane of rotation of the drill string are adjusted to the design position.

After ZHtanovki known methods of angle of inclination of the drill in the plane of the fan before drilling a well on the drilling screen distance from the machine (see. Fig. 4) install the device 7,

which fix the vertical plane, the passage of the schuro through its geo-metric axis (position VI in Fig. 4). An ornate element is placed at an angle tp to the axis of the drill bit and on the walls of the mine at the points OzOz mark its direction. The device is removed. The well is drilled at point N (not shown in the drawing).

After drilling the well, the device 7 is mounted on a drill projectile at a distance a from the drilling machine. A vertical plane is recorded that passes through the geometric axis of the drill shell.

The oriented element has an iodine angle to the axis of the drill bit (position VII) and marks its direction along the walls of the mine at the points 0., 0. If the points do not coincide with the points Oz and Oz, then

when drilling a drill, the installation changed position (the chisel shifted along the wall of the rig, 6ypOBoii snaps deformed, the drill station turned and moved to etc.).

After measuring the distances between the points of the triangle and O-jO.Q, A, and / 2, the angular deviation D {(} and machine variable gene-D / g are determined by calculation, which for the particular case where the line is 0- O;;; Perpendicular to the walls of the excavation, can be determined by the formulas:

, Oh, 0,. / 0 /

io -arclg -i1,

, 0; ATO, 0 / + a, 2

To eliminate the linear variation and deviation angle 10, the machine and the drill string can be moved along the distance column D / i and rotated to match the direction of the orient

element with points Op ,, Oz, i.e. install the drilling rig -in the original position VI. However, to drill a well from position VI without deviating, it is necessary to salt its mouth at point L, which will use additional technical means (d.and re-drilling the bit in the resulting mouth) and the cost of additional working time. Under ground conditions, these olerations are not always possible and hardly advisable.

Any deviations arising during the drilling process are eliminated by moving the drill bit to the position VIII parallel to the one set before the drilling. To do this, adjust the adjusting molds and move and turn the drilling machine so that the control of the orkite element located in

vertical plane passing through

the geometrical axis of the bOOOOgs c :: ar da, reached the opposite walls of the excavation at the OsOo points, and the exit of the curtains -: and equal to the distance from the OzOo points. as in vertical (see fig. 4). and s horizontal (see Fig. 5) planes x.

The method of oriented fans can be widely used in underground mining of mineral deposits when building various types of purposes: for ore blasting, excavation, detailed exploration of ore deposits, ventilation} ;. drainage and so on. Using it, for example, at Ornentprov. Nnn explosive boreholes can significantly reduce} 5X deviation, which makes it possible to improve the quality of mineral resource crushing, as a result of which the productivity of work on the ore production is improved and the working conditions are improved. Precise orientation reduces rejects when drilling wells for special purposes. The application of the method allows to obtain a significant national effect.

Formula and 3 optics

The way of orienting the fan of wells, which is defined in), is:

on the walls of the level of production of the project azimuth, the definition of zenith n combined the plane of rotation of the drilling rig with the design azimuth and zenith, they differ by the fact that, in order to increase the location of the junction in jMacHBe rocks, by defining the direction of JI and preventing deviation of direction boreholes after the seizure, on the walls of the drilling development, they additionally contain the real position of the vertical plane and the plane of rotation of the drill string, the passage of the sch through its geometrical axis, then in the vertical plane under one and te.m same angle to the axis of the projectile burovoto on opposite sides generation fikS1 ruyut point coordinatively pref zannuyu the drill ycTaiiOBKe, and for relieving Operads deviations m -proizvod drilling movement of the projectile in a position parallel to the predetermined Zabur wa, no.

Sources of information taken into account in the examination:

1. Technical instructions for mine surveying. L. “Nedra, 1973, p. 95

2. Handbook of mountains, but-ores; .L, “Subsurface Resources, 1960, vol. 2, p.

E-gr -: 42r 4. - -.1. i. J. -JCr -ri- rii ..,

Claims (1)

Claim The method of orienting a fan of wells, which consists in determining and applying 30 to the walls of the drilling to develop the projected azimuth, to determine the zenith and to combine the plane of rotation of the drill with the projected azimuth and zenith, in order to increase the accuracy of placement wells in the rock mass by determining and preventing deviation of the direction of the wells before and after drilling, on the walls of the drilling additionally fix the actual position of the vertical plane and the plane of rotation of the drill about the projectile passing through its geometric axis, then in the vertical plane at the same angle to the axis of the drill on the opposite sides of the excavation fix a point coordinated to the rig, and operations to correct deviations are carried out by moving the drill to a position parallel to the specified before drilling.