SU667686A1

SU667686A1 - Rod-type deep-well pump

Info

Publication number: SU667686A1
Application number: SU762350732A
Authority: SU
Inventors: Ариф Муртуз Али оглы Хасаев; Адил Мамед Оглы Мамедов; Энвер Мисир Оглы Рустамов; Салех Мамедали Оглы Елчиев
Priority date: 1976-04-19
Filing date: 1976-04-19
Publication date: 1979-06-15

Description

(54) СКВАЖИННЫЙ ШТАНГОВЫЙ НАСОС(54) WELL BAR PUMP

II

Изобретение относитс к области гидромашиностроени , в частности к скважинным штанговым насосам, предназначенным дл добычи нефти, и может быть использовдно при эксплуатации обводненных скважин, а также скважин с пескопро влени мй.The invention relates to the field of hydraulic engineering, in particular to well pumping pumps designed for oil production, and can be used in the operation of water-flooded wells, as well as wells with sand deposits.

Известен скважинный,штанговый насос, содержаший цилиндр с всасываюш,им клапаном , плунжер с нагнетательным клапаном и камеру-сепаратор со смазываюшей жидкостью , расположенную внутри плунжера по всей его длине, образованную внутренней поверхностью плунжера и наружной поверхностью ввернутого в клетку плунжера патрубка , и св занную отверсти ми с зазором рабочей пары плунжер-цилиндр насоса 1.A wellbore pump, a sucker-rod pump containing a cylinder with a suction head, a valve, a plunger with a discharge valve and a separator chamber with lubricating fluid, located inside the plunger along its entire length, formed by the inner surface of the plunger and the outer surface of the plunger screwed into the cage, and the well-known holes with a gap of a working pair of plunger-cylinder pump 1.

Однако известна конструкци насоса не исключает контакта смазывающей жидкости с откачиваемой жидкостью, котора может быть как обводненной, так и с механическими примес ми, например песком, что в свою очередь снижает срок службы насоса.However, the well-known design of the pump does not exclude contact of the lubricating fluid with the pumped-out fluid, which can be either watered or mechanical impurities, such as sand, which in turn reduces the service life of the pump.

Целью изобретени вл етс повышение долговечности насоса путем создани гидрозатвора в зазоре его рабочей пары.The aim of the invention is to increase the durability of the pump by creating a hydraulic seal in the gap of its working pair.

Дл этого в предложенном насосе каме.ра-сепаратор заполнена в зкопластичнрйTo do this, in the proposed pump cam. The separator is filled into an elastic plastic.

ЖИДКОСТЬЮ, а основание наружной поверхности ее патрубка снабжено буртом с установленным на нем с возможностью осевого перемеш,ени эластичным кольцевым поршнем , причем отв е рсти выполнены в верхней части плунжера в виде по крайней мере двух р дов кольцевых канавок и соединенных с ними радиальных каналов.LIQUID, and the base of the outer surface of its branch pipe is equipped with a collar with an elastic annular piston mounted on it with the possibility of axial mixing, and the holes are made in the upper part of the plunger in the form of at least two rows of annular grooves and radial channels connected to them.

На чертеже схематично представлен общий вид скважинного штангового насоса.The drawing schematically shows a General view of the downhole sucker rod pump.

Claims

The described pump consists of a sleeve cylinder 1 with a suction valve 2, a plunger 3 with a discharge valve 4, and a separator chamber 5 filled in with a fluid that is located inside the plunger along its entire length and formed by the inner surface of the plunger and the outer surface of the plunger 6 turned into a cage nozzle 7, as well as stem B. The base of the outer surface of the nozzle is provided with a shoulder 9 with an elastic annular piston 10 mounted on it with the possibility of axial movement. The chamber 5 is connected with openings with The working cylinder of the plunger is a cylinder, and the holes are made in the upper part of the plunger in the form of at least two rows of annular grooves 11 and radial channels 12 connected to them. When the plunger moves upward under the action of a differential pressure, HaJ iiacT between the end face the plunger and the axis of the radial channels 12, extending into the upper annular groove 11, the elastic annular piston 10, moving relative to the inner surface of the plunger 3 along the outer surface of the nozzle 7 of the separator chamber 5, provides a uniform flow in koplastichnoy fluid from the chamber into the gap working pair plunger-cylinder. At the same time, in a flexible fluid, filling the annular grooves 11 on the plunger creates a hydraulic seal. Upon expiration of the fluid from chamber 5 (this is possible with a considerable pump service life), the elastic annular plesch 10 reaches the upper row of annular grooves 11 with radial holes 12. At the same time, the lower row of annular grooves 11 with radial holes 12 remain open. In the chamber, oil is separated from the pumped liquid (according to the principle of the difference in the specific gravities of oil and water). The section of oil that penetrates through the lower row of holes into the gap lubricates the surfaces of the working pair of the plunger-cylinder. The plunger travels downward as usual. Testing of pumps of this design showed an increase in their service life both in comparison with pumps of the series NGV1 type 6667686, as well as with known designs of GZ type pumps and with a separation chamber, on average, by 80%. Formula of the Invention A borehole shtangovy pump comprising a cylinder with a suction valve, a plunger with a discharge valve and a separator chamber with a lubricating fluid located inside the plunger along its entire length, formed by the inner surface of the plunger and the outer surface of the branch pipe screwed into the cage, and the connecting hole with a gap of the pump pair plunger-cylinder, characterized in that, in order to increase the durability of the pump by creating a water seal in the gap of its work pair, the separator chamber zkoplastichnoy polyene in the liquid, and the base of its outside surface is provided with a nozzle collar mounted with axial movement nems vozmzhnostyu elastic annular porschnem, wherein otyersti formed in the upper portion of the plunger in the form of at least two rows of annular grooves and associated radial passages. Sources of information received by the BHIJmania during the examination 1. Depth shtangovy pump with protection of the gap at the ends of the plunger with continuous lubrication of oil from the pumped liquid (NGV133) with a diameter of 43 mm for the operation of wells with sand production. Prospect VDNH, Baku, AzNIPIneft, 1972.