SU977704A1

SU977704A1 - Packer

Info

Publication number: SU977704A1
Application number: SU813313746A
Authority: SU
Inventors: Рафагат Габделвалиевич Габдуллин; Талгат Габдрахманович Минкаев; Виталий Владимирович Тихонов
Original assignee: Нефтегазодобывающее Управление "Джалильнефть" Объединения "Татнефть"
Priority date: 1981-07-10
Filing date: 1981-07-10
Publication date: 1982-11-30

Description

, 1 , one

Изобретение относитс к нефте .добывающей промышленности, а именно к устройствам пакерного типа дл герметизации межтрубного пространства нагнетательных., скважин.The invention relates to the oil industry, namely, packer-type devices for sealing the annulus of injection wells.

известен пакер, содержащий полый корпус с установленным на нем уплотнитёльным элементом самоуплотн ющегос типа A packer containing a hollow body with a self-sealing type sealing element mounted thereon is known.

Недостатком пакера вл етс его ненадежность при использовании в нагнетательных скважинах, так как его уплотнительный элемент не выдерживает Перепады давлений выше 150 кгс/см.The disadvantage of the packer is its unreliability when used in injection wells, since its sealing element does not withstand pressure drops above 150 kgf / cm.

И звестен .также пакер, содержащий полый корпусf установленные-на нем уп.лотнительный элемент, упорное кольцо и муфту с противоположно направленными верхней и нижней коническими по| ерхност ми, предназначенный ;ЕУ1Я гepмeтизaци межтрубного пространства при эксплуатации скважин 12.Also known is a packer containing a hollow body mounted on it, a packing element, a retaining ring and a coupling with oppositely directed top and bottom conical | surface, designed; ECU for tube sealing during well operation 12.

Недостатком известного, пакера вл ютс сложность конструкции, в св зи р чем возникают осложнени при его установке в скважине, срыве с места и подъеме на поверхность.A disadvantage of the known packer is the complexity of the design, in connection with which complications arise when it is installed in a well, when it is broken off and raised to the surface.

Цель изобретени - упрощение конструкции и обеспечение надежностиThe purpose of the invention is to simplify the design and ensure reliability.

(54) ПАКЕР(54) PACKER

работы пакера в нагнетательных скважин х .packer operation in injection wells x.

Указанна цель достигаетс тем, что в пакере содержащем полый корпус, установленные на нем уплотнительный элемент и упорное кольцо и муфту с противоположно направленными верхней и нижней коническими поверхност ми , уплотнительный элемент и упор10 ное кольцо установлены с возможностью взаимодействи в рабочем положении наружной поверхности уплотнительного элемента с нижней поверхностью муфты, а упорного кольца - с верхней This goal is achieved by the fact that in a packer containing a hollow body, a sealing element mounted thereon and an abutment ring and a coupling with oppositely directed upper and lower conical surfaces, the sealing element and the abutment ring are mounted with the ability to interact with the the lower surface of the coupling and the stop ring from the upper

15 поверхностью муфты.15 surface coupling.

На фиг.1 представлен предлагаемый пакер в нерабочем положении; на фиг.2 - то Же, в рабочем положении.Figure 1 presents the proposed packer in the off position; figure 2 - the same, in the working position.

Пакер включает корпус 1, уПлот20 нительный Элемент.2, упорное кольцо 3 о центратором 4, муфту. 5 с коническими поверхност ми 6 и 7, устанавливаемую на заданной глубине между обсадными трубами 8 и 9 при спуске The packer includes a housing 1, an UFL 2020 Element.2, an anvil 3 about a centralizer 4, a coupling. 5 with conical surfaces 6 and 7, installed at a predetermined depth between the casing 8 and 9 during the descent

Claims

-25 casing in the well. The distance between the sealing element 2 and the retaining ring 3 is chosen such that when they are in working position, the outer surface, the sealing element 2 interacts with the bottom surface of the coupling, and the retaining ring is the 3rd upper surface of the coupling, the Packer works as follows. The packer body 1 with the sealing element 2 and the stop ring 3 with the centralizer 4 installed on it is lowered into the well on the column the pump of the compressor and compressor pipes 10. expands, striving to assume the original position. At the same time, the retaining ring 3 .. is pressed onto the upper conical surface b, so that the sealing element 2 is precisely fixed in the working position and its outer surface is firmly pressed against the conical surface 7. This also ensures reliable control of the packer installation in the borehole ( weight indicator). During operation, the sealing element 2 of the packer is pressed even more strongly against the conical surface of the top 7 to increase the reliability of sealing. mezhtrubnogoProstranstva, Technical and economic effect of the proposed use of the packer Hg i is as follows, Packer .. constructively simple implementation, it lacks for .in koriv guide assembly, pushers and other details, which are provided with known packers. As a result, the metal intensity of the packer is significantly reduced, and the work on its transportation and maintenance is also facilitated. As a sealing element in a packer, you can use, for example, a sealing element from a commercially available 5-7o packer. Using a packer eliminates the complications that arise when using known packers. Due to the self-sealing effect of the sealing element, the packer is able to withstand higher pressure drops (500 kgf / cm and more). Equipped with the fact that, in order to simplify the design and ensure reliability of operation, the sealing element and the retaining ring are mounted with the possibility of interaction in the working position of the outer surface and a sealing member from the bottom surface of the box, and the upper thrust ring coupling surface. Sources of information taken into account in the examination 1, USSR Author's Certificate No. 640018, class E 21 B 33/12, 1978, 2, Av. Copyright certificate of the USSR No. 768937, class E 21 B 33/12, 1978 . (prototype),

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