RU2014119600A

RU2014119600A - METHOD FOR PRODUCING FLUID FROM TWO STRESSES OF ONE WELL AND PUMP-EJECTOR INSTALLATION FOR ITS IMPLEMENTATION

Info

Publication number: RU2014119600A
Application number: RU2014119600/03A
Authority: RU
Inventors: Олег Сергеевич Николаев
Original assignee: Олег Сергеевич Николаев
Priority date: 2014-05-15
Filing date: 2014-05-15
Publication date: 2014-08-10
Also published as: RU2550613C2

Abstract

1. Способ добычи флюида из двух пластов одной скважины, включающий спуск в скважину на колонне насосно-компрессорных труб, по меньшей мере, одного пакера для разобщения пластов скважины, жидкоструйного эжектора и центробежного насоса, и откачку флюида из нижнего пласта центробежным насосом с подачей под давлением в сопло жидкоструйного эжектора, последним одновременно с флюидом из нижнего пласта откачивают флюид из верхнего пласта по колонне насосно-компрессорных труб в устье скважины, отличающийся тем, что флюид нижнего пласта нагнетают в сопло жидкоструйного эжектора ламинарным течением потока, а откачку скважинного флюида в устье скважины производят центробежным насосом с напором, задаваемым из условия распределения давления на подъем масс флюида из нижнего пласта в сопло жидкоструйного эжектора и смеси флюидов обоих пластов по колонне насосно-компрессорных труб и на работу жидкоструйного эжектора, при этом проходные сечения сопла и камеры смешения жидкоструйного эжектора задают прямо пропорциональными дебиту нижнего пласта и дебиту обоих пластов скважины, соответственно.2. Насосно-эжекторная установка для осуществления способа по п.1, содержащая спускаемые в скважину на колонне насосно-компрессорных труб электроприводной центробежный насос с силовым кабелем, жидкоструйный эжектор и, по крайней мере, один пакер с кабельным вводом, разобщающий пласты, эжектор входом в сопло соединен с трубой, в которой установлен обратный клапан, отличающаяся тем, что на выходе центробежного насоса установлен ресивер, соединенный трубой с входом в сопло жидкоструйного эжектора, на выходе из ресивера установлен �1. A method of producing fluid from two reservoirs of one well, comprising lowering at least one packer into a well on a tubing string to separate the formation, a liquid ejector and a centrifugal pump, and pumping the fluid from the lower reservoir by a centrifugal pump with the pressure in the nozzle of the liquid jet ejector, the last simultaneously with the fluid from the lower reservoir pump the fluid from the upper reservoir along the string of tubing at the wellhead, characterized in that the fluid injects the lower reservoir t into the nozzle of the liquid jet ejector by a laminar flow, and pumping of the wellbore fluid at the wellhead is carried out by a centrifugal pump with a pressure set from the condition of the pressure distribution to lift the masses of fluid from the lower reservoir into the nozzle of the liquid jet ejector and a mixture of fluids of both reservoirs along the tubing string and the operation of the liquid-jet ejector, while the bore sections of the nozzle and the mixing chamber of the liquid-jet ejector are set directly proportional to the flow rate of the lower layer and the flow rate of both layers of the well, respectively Responsibly. 2. The pump-ejector installation for implementing the method according to claim 1, comprising an electric drive centrifugal pump with a power cable, a liquid-jet ejector and at least one packer with a cable entry, uncoupling the layers, an ejector by the entrance to the nozzle being lowered into the well on a tubing string connected to a pipe in which a non-return valve is installed, characterized in that a receiver is installed at the outlet of the centrifugal pump, connected by a pipe to the entrance to the nozzle of a liquid-jet ejector, � is installed at the outlet of the receiver

Claims

1. A method of producing fluid from two reservoirs of one well, comprising lowering at least one packer into a well on a tubing string to separate the formation, a liquid ejector and a centrifugal pump, and pumping the fluid from the lower reservoir by a centrifugal pump with the pressure in the nozzle of the liquid jet ejector, the last simultaneously with the fluid from the lower reservoir pump the fluid from the upper reservoir along the string of tubing at the wellhead, characterized in that the fluid injects the lower reservoir t into the nozzle of the liquid jet ejector by a laminar flow, and pumping of the wellbore fluid at the wellhead is carried out by a centrifugal pump with a pressure set from the condition of the pressure distribution to lift the masses of fluid from the lower reservoir into the nozzle of the liquid jet ejector and a mixture of fluids of both reservoirs along the tubing string and the operation of the liquid-jet ejector, while the bore sections of the nozzle and the mixing chamber of the liquid-jet ejector are set directly proportional to the flow rate of the lower layer and the flow rate of both layers of the well, respectively of course.

2. A pump-ejector installation for implementing the method according to claim 1, comprising an electric drive centrifugal pump with a power cable, a liquid-jet ejector, and at least one packer with a cable entry, uncoupled seams, an ejector input, lowered into the well on a tubing string, the nozzle is connected to a pipe in which a non-return valve is installed, characterized in that a receiver is installed at the outlet of the centrifugal pump, connected by a pipe to the entrance to the nozzle of a liquid-jet ejector, the aforementioned is installed at the outlet of the receiver a non-return valve, and a second non-return valve is installed in the channel for supplying fluid from the upper wellbore into the receiving chamber of the ejector, while the liquid-jet ejector is made with flow sections of the nozzle and mixing chamber directly proportional to the flow rate of the lower reservoir and the flow rate of both well strata, respectively.

3. The pump-ejector installation according to claim 2, characterized in that an additional packer can be installed on the tubing string with a cable entry above the channel for supplying fluid from the upper wellbore to the receiving chamber of the liquid-jet ejector.