SU610973A1

SU610973A1 - Controllable valve for drilling pipes

Info

Publication number: SU610973A1
Application number: SU752161936A
Authority: SU
Inventors: Нурулла Нафтуллаевич Ядуллаев; Юрий Николаевич Виницкий
Original assignee: Азербайджанский государственный научно-исследовательский и проектный институт нефтяной промышленности
Priority date: 1975-08-11
Filing date: 1975-08-11
Publication date: 1978-06-15

Description

1one

Изобретение относитс к области техники нефт ных, и газовых скважин.The invention relates to the field of oil and gas wells.

Известен управл емый клапан дл перерыти фильтровой скважины.A control valve is known to interrupt the filter well.

Недостаток этого клапана закшочаетс в низкой надежности его работы.The disadvantage of this valve is the low reliability of its operation.

Известен также управл емый обратный клапан дл бурильнь1Х труб, имеющий корпус , седло, клапанную тарелку, подпружиненный шток (иди золотник), лабиринтовый стабилизатор, пружину 2.Also known is a controlled check valve for drill pipes, having a body, a seat, a valve plate, a spring-loaded stem (go spool), a labyrinth stabilizer, a spring 2.

Недостатком указанного клапана вл етс наличие цилиндрического подпружиненного штока (золотника), который из-за реактивного момента пfyжины стремитс зан ть свое прежнее положение, т, е. его положение не переводитс в новое в лабиринтовой дорожке. В этом случае клапан не срабатывает. The disadvantage of this valve is the presence of a cylindrical spring-loaded stem (spool), which, due to the reactive moment of the spring, tends to occupy its previous position, i.e. its position is not transferred to a new one in a labyrinth path. In this case, the valve does not work.

Цель изобретени - повышение надежности фиксации за счет исключени действи реактивного момента пружины,The purpose of the invention is to increase the reliability of fixation by eliminating the effect of the reactive torque of the spring,

Цепь достигаетс тем, что шток и втулка фиксирующегоустройства выполненыThe chain is achieved by the fact that the stem and the hub of the fixing device are made

некруглого сечени и подвижно соединены штифтом.non-circular cross section and movably connected by a pin.

На фиг. 1 показан предлагаемый управл емый клапан; на фиг. 2 - положение шт(фта штока, когда клапан закрыт на фиг. 3 положение штифта штока при циркул ции промывочной жидкости; на фиг. 4 - положение штифта, когда клапан открыт;на фиг, 5 положение штифта штока при циркул ции промывочной жидкости.FIG. 1 shows a controllable valve being proposed; in fig. 2 shows the position of the pcs (ft of the rod when the valve is closed in Fig. 3 the position of the rod pin when circulating the flushing fluid; Fig. 4 the position of the pin when the valve is open; Fig. 5 the position of the rod pin when circulating the flushing fluid.

Claims

The controllable valve comprises a housing 1, in which the sleeve 3 is assembled and tucked by a nut 2, a flat fixing device consisting of the sleeve 4 with walls 5 with labyrinth tracks executed on them is installed in the slots of the sleeve 3. Between the latter, the rod 6 has a non-circular cross-section, for example, flat with a pin 7 in the transverse slot, both ends of which protrude above the surface of the stem and are located in labyrinth tracks. Two grams of the side walls prevent the flushing fluid from entering the mechanism. The valve has a saddle 8, a plate 9 and a spring 1O. The gap between the housing and the seat is sealed by sealing rings 11. The valve is controlled by the fluid flow created by the mud pumps and the spring force 10. The order of operation of the valve is desired. FIG. Figure 2 shows the position when the pin 7 placed in the slot of the rod 6 is at the extreme upper point of the labyrinth path. In this position, the valve is closed. When the circulation of flushing fluid is restored, the valve plate 9 together with the stem 6 moves downwards. At this time, the pin 7 moves simultaneously along the right side of the labyrinth path and through the slit of the rod. As long as there is fluid circulation, the stem is in the lower position, and the DIPTT is placed in the lower right corner of the labyrinth path (see Fig. 3). After cessation of circulation, the rod 6 is pressed upward by spring force. Moreover, since the rod has a non-circular cross-section, the reactive moment does not affect the displacement of the rod pin, which, on a raid, on the inner surface of the laimer track, moves in the slot and is fixed with sufficient accuracy at the lower extreme point of the labyrinth track ( see fig. 4). In this position, the valve is open. Further, when circulating restores, the stem, U, together with it, and the pin move downwards, the pin is retracted by the gentle bevels of the outer surface of the red track, and while the airbag is drying, the pin will open in the right lower groove (see FIG. ). When the zirpus is pre-graded, the stem rises, at the same time the pin moves along the left side of the labyrinth path and along the stem slot and is fixed at the extreme upper point (see Fig. 2). The valve is closed. In the next cycle is repeated. Claims of the Invention A control valve for drill pipes comprising a housing, a seat, a plate with a rod, a spring and a fixing device made in the form of an interconnected rod, sleeves with a labyrinth track and a ball that differs in order to increase the reliability of fixing due to the exclusion of the action of the reactive moment, the springs, the rod and the sleeve of the fixing device are made of a non-circular cross section and are movably connected by a pin. Sources of information taken into account in the examination: 1.Certificate of certificate number 287864, cl. Е 21 В 43 / ОО, 1965.

2. Information beestock No. 5404 T 07590, VNIIENG, 1973.