SU1481377A1 - Cementing head - Google Patents

Abstract

The invention relates to the mining industry. The goal is to increase the efficiency of the device. It contains / K / casing 1, bottom 2 and top 3 side taps, mounted in K 1, the plug 4 is fixed with the help of a locking screw 5. To the bottom of the plug 4 the rod 6 is rigidly connected with thickening 7 at the lower end. In the upper part of the rod 6 there is a cylinder 8 consisting of the upper 9 and lower 10 parts, and between their ends against the outlets 2 a toroidal vortex chamber 11 is formed. The upper part 9 is rigidly connected to the rod, and the lower 10 is mounted for movement along the rod 6. In the lower part of the rod 6 there are magnetic disks 12 facing each other with like poles moving between thickening 7 and part 10 of cylinder 8. Connecting K 1 with a casing installed in a well. The cement slurry is pumped through the taps 2. This causes the part 10 of the cylinder to oscillate about part 9. The disks 12 form an elastic suspension and the oscillations go into self-oscillations. Pumped cement mortar, which is treated with an alternating magnetic field and actively mix. During the movement of the separation plug on the casing string, the latter is magnetised, which leads to an increase in the quality of adhesion of the cement stone to the casing. 1 il.

Description

one

The invention relates to the mining industry, and more specifically to the oil and gas extracting industry, and can be used in casing cementing with the treatment of cement slurry.

The purpose of the invention is to increase the efficiency of cementing

HEADS

The drawing shows a cementing head, a slit.

The cementing head includes a hollow cylindrical body 1, lower 2 and upper 3 lateral taps, a separating plug 4 installed inside the housing 1 on the locking wedge 5 between lower 2 and upper 3 lateral taps, rod 6 placed coaxially with housing 1 and rigidly connected with its the upper end with a separating plug 4. At the lower end, the rod 6 is made with a thickening 7, At the upper end of the rod there is a cylinder 8, made against the lower side branches 2 of the upper 9 and lower 10 parts to form between their end A toroidal vortex chamber 11, the upper part 9 of the cylinder is rigidly connected to the rod 6, and the lower 10 is mounted for movement along the latter. Magnetic rings 12 are installed in the lower part of the rod 6 with the possibility of movement between the thickening 7 of the rod and the lower part 10 of the cylinder, and their poles of the same name are facing towards each other

The cementing head works as follows.

Q 5 Q

five

Before cementing the well, the cementing head is installed on the casing string. Using locking screws 5, the separation plug is installed in housing 1 so that the toroidal vortex chamber 11 is placed against the lower side branches 2. During the process of pumping cement mortar into the pipe string through the lower side branch 2, the flow hits the toroidal vortex chamber 11 and vibrates the motion of the lower part 10 of the cylinder 8; Oscillatory motion occurs due to the collision of the counter flows of the cement slurry. The self-oscillation of the lower part of the cylinder 8 is facilitated by the oscillation of the magnetic rings 12 on the rod 6, since their like poles face each other, which creates an elastic suspension for the lower part 10 of the cylinder 8. Thus, the flow of cement slurry is actively mixed and de-magnetized in alternating field of magnetic rings 12.

After the cement mortar injection process is completed, the passage of the lower side branches 2 is closed, the locking screws 5 are turned out, the separator plug 4 is forced into the well by pumping fluid through the upper side branch 3, and the cement slurry is forced out into the annulus. In the process of moving the separation plug 4 along the casing string, the magnetic rings 12, interacting with the latter, magnetize its body. In the process of hardening the cement mortar, the quality of adhesion of the cement stone to the casing string is improved, and the strength properties of the cement stone increase.

Claims (1)

Invention Formula A cementing head, which includes a hollow cylindrical body, lower and upper lateral branches, a separating plug installed inside the housing on the locking screw between the lower and upper lateral branches, characterized in that it is equipped with a rod located inside the housing to increase its efficiency. coaxially last and rigidly connected with their top0 five 0 The end with a separating plug, a cylinder mounted at the top of the rod concentric with the latter, and a package of magnetic rings placed at the lower end of the rod, while the rod at its lower end is made with thickening, the cylinder is composed of upper and lower parts to form between them the ends of the toroidal vortex chamber located against the lower side branches, the upper part of the cylinder is rigidly connected to the rod, and the lower part is mounted for movement along the latter, the magnetic rings are installed are movable between the thickening of the rod and the lower part of the cylinder, and their single, nominal poles are facing towards each other. Editor N. Tupitsa Order 2647/30 VNISTI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab. Production and publishing plant. Patent. Uzhgorod, st. Gagarin, 101 Compiled by N. Chenig Tehred A. Kravchuk Proofreader S. Cherni Circulation 515 Subscription