SU21078A1 - Apparatus for determining the curvature of boreholes - Google Patents

Description

Have

To determine the curvature of boreholes in a known manner, by leveling the level of liquid in a tube, the inventors propose using a device based on the law of communicating vessels, enclosed in a tubular casing, screwed to a drill string to allow fluid to pass through the valve mechanism, and consist of vertical fixed in the glands of the shaped washer tubes; the washer is equipped with chambers and channels with mercury poured into them. The distribution mechanism consists of a stem with a rod and a cup for pressing the spring and releasing the magnetic needle of the compass with the help of the guide and levers;

 the piston is lowered by a valve with a rod.

The drawing shows a vertical section of the apparatus.

In a cylindrical case with holes 1, 30, with which the case is screwed to the drill rod and to the bit, a cap 4 is inserted to protect the device from external damage and condition. - m; .from four or eight vertical tubes b, fixed in glands 19 shaped washers with chambers 21 and radial channels 22 with mercury filled in them. The shaped washer is connected to the cap 4 and the distribution mechanism consisting of a valve 26 with a rod 23, fixed in the piston 18 with radial intersecting center B channels 20 and a rod 17 screwed to it, carrying a cup 15 in the upper part, spring 16 clamping nuts 14, to which is attached a lead 13 connected with a system of levers 13a magnetic; arrows of the compass 8, resting on the table 11 with screwed into the shaped washers / legs 12.

The device is as follows. The apparatus inserted into the casing is lowered onto the drill rods with a chisel screwed to the casing into the borehole. The drilling fluid flows through the annular gap between the casing and the cap 4 and through the gaps between the protrusions 25 of the shaped washer enters the space above the valve 26, which is lowered by liquid pressure through the hole 30 into the bit and then to the bottom hole. The valve 26 is lowered, there is no rod 23 with a piston 18, the radial channels 20 of which are in contact with the radial channels 22 of the shaped lash, as a result of which the tubes 6 communicate with the chambers 21 and the channels 22 and 20 filled to the height below the surface of the building 11 with mercury and or liquid over the latter; the fluid level in the tubes 6 is usually kept at half the height of the tubes above the surface of the table P. When the well is vertical, and hence the apparatus, the liquid level in the tubes b will be horizontal. When the drill is working, a liquid is passed through the rods, giving to the valve 26 of the apparatus,

. lowers the last one. At the same time, by means of the rod 23, the piston 18 of the rod 17 and the cup 15, the valve compresses the spring 16, releasing the magnetic needle of the compass 8 by means of the valve 13 and the system of levers 13a. Thus, the azimuth of the deviation of the well is determined. When the inclined position of the well is LIQUID in tubes b, it will move and

horizontal position in pipes 3 i

 The ke, adjacent to it, to the inclined axis of the well, will be higher than in the opposite tube. By stopping the pumping of water through the drill pipes, the valve 26, under the influence of the spring 16, closes the piston 18 and rises up, the channels 20 uncouple from the channels 22 and the tubes 6 uncouple from each other. Pru: “ina 16 pot there is no leash 13, which, having pressed on the system of levers 13a cominaca 8, presses the magnetic needle to fix the position of the apparatus at a given depth of the well. To determine the deviation angle of the well from the vertical.

,: pull the drill out of the well, unscrew the drill rods and chisel, then unscrew the couplings 3 and 29, remove the nut that attaches to the rod 23, kl. (the pan 26, having in the lower part sliding in the guide 28, a quadrilateral section, p, nf, prevents |

rotation of the piston 18, and, unscrew the screws, pressing the protrusions 25 to the body of the casing, pull the device, from which the cap 4, from the casing 2, hang the device vertically. The levels of fluid in the tubes 6 will take a horizontal position. The difference between the heights of the fluid levels in the pipes determines the angle of deviation of the well from the vertical. The deviation zimuth of the well is determined by the readings of the magnetic needle of the compass. In order to prevent liquid from pouring out of the tubes 6 with their large inclination, the upper open ends of the tubes are connected by rubber tubes 5 assembled at the top into an eight-pointed cross.

Before the invention.

An apparatus for determining the curvature of boreholes, enclosed in a pipe, a chassis and attached to a drill hole, is allowed to pass through the apparatus of the flushing fluid in order to open the valve of the distribution mechanism, characterized in that it consists of vertical tubes b fixed in the glands 19 Shaped washers with chambers 21 and channels 22 with mercury poured into them, y-distributor; A tel mechanism consisting of a H37ioj rod 18 with a rod 17 and a cup 15 for pressing the spring 16 and releasing the magnetic needle of the compass 8 by means of the leash 13 and levers 13c, while lowering the valve 26 with the rod 23.

to EBTopcj OHy to the testimony of S. M. Volokh and L. M. Knu; . , ; : Нцца JNs 21078х

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