SU1307086A1 - Deep-well sucker-rod pump installation - Google Patents

Abstract

The invention relates to the technique of oil extraction and can be used if necessary for the intradermal treatment of oil by means of metered delivery of chemicals to the intake of a sucker-rod pump. The purpose of the invention is to improve efficiency in operation. A chemical container 5 is located in the annulus of the well between the production and pumping columns of pipes 1 and 3. The plunger of the dispenser 6 is made in the form of a nozzle 10 installed at the lower end of the tubing string 3, the lower part of which is fitted with a sealing element 11. The dispenser 6 cylinder is made in the form of a casing 12 fitted with a sealing element 13 in the upper part and the cone 14, interacting with the locking device 19, which is made in the form of a landing ring with an inner conical surface. The check valves 7 and 8 are placed on the side surfaces of the casing 12 and the pipe 10. The change in the volume of the band formed by the pipe 10, the casing 12 and the elements 11, 13 during the up and down stroke of the plunger ensures that the feed and pump are fed to the sucker rod pump . 1 hp f-ly, 1 nl. i (Л С

Description

The invention relates to a technique for oil production, in particular, to well pumping sump units, and can be used in the oil industry with the need for downhole oil treatment by metered supply of chemicals to the sucker rod pump.

The purpose of the invention is to increase efficiency in operation. ABOUT

In the drawing, a schematic representation of a foam foam pump unit, a general view.

A well pumping unit contains a pumping unit 2 with a column of 3 pumping tubes, mounted in a castle support 4, a chemical container 5 and 5, located in a column of 5 not 1 production pipes of a well.

piping lower rod pump 2, made in the fixed form. Then a chemical agent is poured into the annular space of the well (not indicated) between the operational 1 and pumping 3 columns of pipes, forming a chemical container 5, and proceed to the operation of the well,

During the suction of the sucker-rod pump 2, the load from the weight of the liquid column in the column of pumping pipes 3 is perceived by the plunger (not indicated) of the pump, while the length of the column of pumping pipes is reduced and the nozzle 10 is moved upwards by the amount of construction of the length of the pumping pipes. When moving the pipe 10 up the volume of the cavity formed by the pipe 10, the casing 12 and seal the dispenser 6, filled in the form of a pair of 20 elements 1 and 13, reducing

cylinder-plunger with check valves 7 and 8 and fixing device 9 interacting with the column 1 of the production pipes of the well 9. Chemical container 5 is located in the annulus of the well between the production and pump 3 columns of junction 6, the plunger of the metering device 6 is made in the form of pump sets installed at the lower end of the column 3 pipes of the nozzle 10, provided in the lower part with a sealing element 11, the cylinder of the dispenser 6 is made in the form of a casing 12, provided in the upper part with a sealing element 3, and in the lower part - a landing cone 14 installed with the ability to interact with the locking device 9, made in the form of a seat ring with an inner conical surface (not marked). The check valves 7 and 8 are placed on the side surface of the nozzle 10 and the casing 12 in the cavity (not marked) between their sealing elements II and 13. The nozzle 10 is equipped with an additional check valve 15 installed below the main check valve 8. In addition, the nozzle 10 is located stop 16.

A downhole sucker-rod pumping unit for supplying and downhole oil treatment works as follows.

 After the landing cone 55 is received (not indicated), the sucker rod is 14 in the fixing device 9, made-coca, and the necessary amount of chemical in the form of the reactant's ring is determined by the inner conical surface, the selection of the diameters of the nozzle 10

in the castle support A of the column 3, the pump-and housing 12, taking into account the depth of descent

piping lower rod pump 2, made in the fixed form. Then a chemical agent is poured into the annular space of the well (not indicated) between the operational 1 and pumping 3 columns of pipes, forming a chemical container 5, and proceed to the operation of the well,

During the suction of the sucker-rod pump 2, the load from the weight of the liquid column in the column of pumping pipes 3 is perceived by the plunger (not indicated) of the pump, while the length of the column of pumping pipes is reduced and the nozzle 10 is moved upwards by the amount of construction of the length of the pumping pipes. When moving the pipe 10 upward, the volume of the cavity formed by the pipe 10, the casing 12 and is sealed, the check valve 7 closes.

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and the check valve 8 opens and the chemical in a volume equal to the decrease in the volume indicated above the cavity enters the inside of the pipe 10 and further, mixing with the formation fluid entering through the additional check valve 15, is sucked by the sucker-rod pump 2.

In the course of pumping the ttang pump 2, the load on the weight of the liquid column in the column 3 of the pump tubes is perceived by the pump tubes themselves, which, by extension, contribute to the elongation of the pipe 10,

those. moving it down, while the housing 12 remains stationary. in turn, it increases the volume of the cavity formed by the nozzle 10, the casing 1.2 and the sealing elements 11 and 13, and the check valve 9 opens, passing chemical from the container 5 into the said cavity in a volume equal to an increase in its volume from the elongation of the column 3 of the pump tubes, and 8 and an additional 15 check valves are closed.

Thus, the change in the volume of the cavity formed by the nozzle 10, the casing 12 and the sealing elements And and 13, during the stroke of the plunger rod pump 1 up and down ensures the supply of chemical at

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pump rod, its diameter and the number of swings.

The prevention of chemical agent leakage in container 5 into the well through check valves 7 and 8, when the pumping rod pump is disrupted from the castle support 4 in the plug-in pump version, is supplied by the supply pipe 10 with additional check valve 4 installed below the main check valve 8, This check valve 7 is closed, because the pressure created by the weight of the liquid column in the column 3 pumping pipes, always 307

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yes more pressure created by the top of the

catfish chemical column in the annulus. The lifting of the casing 12 when removing the column 3 of the pumping tubes from the well is ensured by the presence of a stop 16 on the nozzle 10.

Claims (2)

1. Well shtangov pump installation for production and wells-25 elements. processing of oil containing 2. Installation according to p. 1, placed in a string of production pipes of a well, a sucker-rod pump with a column of pumping pipes, a container of chemical reagent and a dispenser, made a jQ borehole when lifting a plug-in trouser in the form of a pair of cylinders - a plunger with a booster pump; pre-check valves and co-operating with the column it is clear that, in order to eliminate the flow of a chemical reagent from the annulus into a complete check valve installed on the main's niuk. Editor 1.Gorvat Order 1605/30 Compiled by E.Ginzburg Tehred V.Kadar Corrector Circulation 575 Subscription VNISHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing plant, g, Uzhgorod, st. Project, 4 864 the pipes of the fixation device borehole, which, in order to increase operational efficiency with the plug-in version of the sucker-rod pump, the chemical reagent container is located in the annular space of the borehole between the production tubing and the tubing, the dispenser plunger is designed as installed at the lower end of the column of pumping pipes of the nozzle, provided at the bottom. parts of the sealing element, the dispenser cylinder is made in the form of a sealing element, and in the lower part, a landing cone installed with the possibility of interaction with a fixing device made in the form of a nozzle ring with an internal conical surface, with check valves placed on the side surface of the nozzle and casing in the cavity between their sealing elements. 2. Installation under item 1, it is clear that, in order to eliminate the flow of a chemical reagent from the annulus into well when lifting the plug-in sucker rod pump, the nozzle is supplied with a complete check valve installed on the main's niuk. Proofreader M.Sharoshi