SU1492016A1 - Core-orienting device for basic rock - Google Patents

Abstract

The invention relates to mining, and more specifically to means for indicating the spatial position of the core. The goal is the orientation of unoriented sampled core from vertical and inclined wells. The device comprises a housing 1 with a horizontal limb 2, a core holder and a sight assembly. The core holder is made in the form of a vertical limb 6 and 3/4 of the ring 7 with two needle holders 8. The core holder is rigidly fixed on the inner alidade 3, which ensures its rotation relative to the horizontal limb 2. The sighting unit is made in the form of a sighting frame 9 moved with the help of sliders 10 along the posts 11. An additional limb 14 is mounted on one of the runners. The core is fixed in the core holder. The limbs 2 and 6 establish the azimuth and the angle of curvature of the wellbore, and the limb 2 and the additional limb 14 establish the azimuth and dip angle of the formation. The rotation of the core, combine its plane of the layers with the plane of the sighting frame 9. Then put a line pointing to the north. 3 il.

Description

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IzPrprtsmpk II1 ii ifi-ge to the i-iipiiof-iy case, l imrino to (i.e. to indicate ip1 stranstI InP1 about the core, selected in sedimentary rocks:.

The purpose of the inventor is the orientation of the selected vertical and oblique core samples.

FIG. 1 Prrstanstanena general scheme 71n sedimentary rocks; FIG. 2 is a section A-A in FIG. one; in fig. 3 is a section K-H in FIG. one.

The core (the prioritizer for sedimentary rocks contains the body 1 with the horizontal limb 2, the core holder and the visibility node the horizontal limb 2 is rigidly connected to the core organizer 1 case. On the body 1, the inner 3 and outer alidides are concentrically mounted. rotate in the plane of body 1 relative to the horizontal limb 2; the outer alidade A is retained on body 1 by the limiting ring 5.

The core holder is made in the form of a vertical limb 6 and 3 / A of the ring 7 with two needle holders 8 located coaxially along the diameter of the ring 7. One of the holders is designed to move along its axis (for example, a screw or a spring-loaded structure). The core holder is rigidly fixed with a vertical limb 6 on the inner alidade 3, which ensures its rotation relative to the horizontal limb 2 together with the inner alidade 3.

The sighting unit is made in the form of a sighting frame 9, which, with the help of the runners 10, moves along the racks 11 with the measuring scales. The sighting frame 9 is fixed relative to the sliders 10 with the help of the fixing screws 12, and the sliders themselves are fixed to the uprights 10 with the help of locking screws 13. The position of the sighting frame 9 relative to the uprights 11 is determined by the additional limb 1A fixed on one of the runners 9. Racks 11 The sighting unit is mounted on the radii of the outer alidade A, an angle of 165-170, which is 11 ° 1x. Vizier of external alidade A is located on the bisector of this angle.

A coring device for sedimentary rocks works as follows.

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ten

15

20

25

1b

A sample of the root is placed in the core holder, having previously made recesses for the needles in it. Then, 1H) rimbodalomu limb 2 and

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the vertical limb 6 of the core holder is stabilized corresponding to the azimuth and curvature angle of the wellbore. According to the known parameters of the formation (azimuth and the angle of its fall), using the readings of horizontal 2 and additional 1A limbs, set the sighting frame 9 to such a position that the guide plane of the sighting frame 9 passes through the point of contact of the upper needle holder 8 with the core. Then, smoothly rotate the core sample around its axis until it overlaps its plane of layering with the plane of the sighting frame 9, imitating the position of the layer from which the core was selected. In this position, a line pointing to the north is drawn on the core core. This direction is determined by the horizontal limb 2 scale. After that, the oriented core can be used for further studies.

A coreorienter allows you to orient the cores of sedimentary rocks that were previously unoriented.

thirty

J5 Formula of invention

A core core for sedimentary rocks, comprising a horizontal limb body, a core holder and a sight assembly, characterized in that, in order to orient the selected core from vertical and inclined wells, it is provided with internal and external alidides mounted concentrically on the body with the possibility of rotation in its plane and located on both sides of the horizontal limb, with the core holder attached to the inner alidade and made in the form of a vertical limb and 3 / A rings with two needle holders, can be rotated in the plane of this limb, and the sighting unit is made in the form of a sighting frame, shifting along the two racks with measured scales with the help of sliders, one of which has an additional limb, and the racks are mounted on

0

five

0

five

the radii of nyoshis I alsh1 ly, gsstapl - yuptskh angle 1 in 1-17G), and the pyeir external

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() 1 (-1fi

alidade placed on the bisector of this angle

Claims (1)

Claim A core orientator for sedimentary rocks, comprising a body with a horizontal limb, a core holder and a sighting unit, characterized in that, in order to orient the selected core from vertical and deviated wells, it is equipped with internal and external alidides mounted concentrically on the body with the possibility of rotation in it plane and located on both sides of the horizontal limb, while the core holder is mounted on the inner alidade and is made in the form of a vertical limb and 3/4 rings with two needle holders, located with. the possibility of rotation in the plane of this limb, and the sighting unit is made in the form of a sighting frame, moved along two racks with measuring scales with the help of sliders, one of which has an additional limb, and the racks are installed on the radii of the external alidade, which make an angle of 165-170 ° a the sight of the external alcove of the placed corner, on the bisector it is Fig.g-6 Fig.Z