Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-precision CO2 flooding foam crude oil metering device and metering method under high gas-liquid ratio

A metering device and gas-liquid ratio technology, which is applied in the direction of measurement, earthwork drilling, mining fluid, etc., can solve the problems of large error, low measurement accuracy, inaccurate measurement, etc., achieve reasonable structure, high measurement accuracy, and improve the measurement level Effect

Pending Publication Date: 2018-09-18
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a high-precision CO 2 The high gas-liquid ratio foam crude oil metering device and metering method overcome the above-mentioned deficiencies in the prior art, and can effectively solve the current CO 2 The foam flooding crude oil metering device has the problems of inaccurate measurement, large error and low measurement accuracy under the condition of high gas-liquid ratio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-precision CO2 flooding foam crude oil metering device and metering method under high gas-liquid ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, as attached figure 1 As shown, the high precision CO 2 The high gas-liquid ratio foam crude oil metering device includes a vertical metering separator 1, a gas phase metering pipeline 2, a liquid phase metering pipeline 3, an oil outlet pipeline 4 and a PLC, and the liquid inlet of the vertical metering separator 1 is connected with a liquid inlet Pipeline 5, the gas outlet of vertical metering separator 1 is connected with one end of gas phase metering pipeline 2, the liquid outlet of vertical metering separator 1 is connected with one end of liquid phase metering pipeline 3, and the other end of gas phase metering pipeline 2 The other end of the liquid phase metering pipeline 3 is respectively connected with the oil outlet pipeline 4, and the gas phase electric valve 6 and the gas phase flowmeter 7 are connected in series on the gas phase metering pipeline 2, and the mass flowmeter is connected in series on the liquid phase metering pipeline 3 Flow mete...

Embodiment 2

[0032] Embodiment 2, as the optimization of above-mentioned embodiment, as attached figure 1 As shown, the top of the vertical metering separator 1 is communicated with a vent line 11, and a vent safety valve 12 is connected in series on the vent line 11. Setting the venting pipeline and venting safety valve can prevent safety accidents such as explosion of the tank caused by too high pressure in the vertical metering separator 1. When the pressure in the vertical metering separator 1 is too high, the venting safety valve will jump to discharge excess gas in the tank , reduce the pressure inside the tank and ensure the safe operation of production.

Embodiment 3

[0033] Embodiment 3, as the optimization of above-mentioned embodiment, as attached figure 1 As shown, there is a bypass line 13 connected between the liquid phase metering line 3 after the liquid phase electric valve and the liquid phase metering line 3 after the pipeline centrifugal pump 10, and a bypass line check valve 14 is connected in series on the bypass line . When the pipeline centrifugal pump 10 breaks down, the liquid in the vertical metering separator 1 can be directly discharged from the bypass line 13 to ensure the safe operation of production; the bypass line check valve 14 can prevent the liquid from flowing back and ensure the measurement accuracy precision.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of foam crude oil measuring, in particular to a high-precision CO2 flooding foam crude oil measuring device and measuring method under a high gas-liquid ratio. The metering device comprises a vertical measuring separator, a gas phase metering pipe, a liquid phase metering pipe and an oil outlet pipe. A liquid inlet of the vertical measuring separator communicateswith a liquid inlet pipe, and an air outlet of the vertical measuring separator communicates with one end of the gas phase metering pipe. According to the high-precision CO2 flooding high gas-liquidratio foam crude oil measuring device and measuring method, the measuring working conditions of sudden increase of associated gas in a single well after breakthrough in the early and late stage are met, the influence of crude oil foaming on the liquid level in a separation device is avoided effectively, the measuring accuracy and measuring effect of a single well measuring device are improved, continuous metering ensures high metering accuracy, the free conversion between intermittent metering and continuous metering also enables the high-precision CO2 flooding foam crude oil measuring deviceand measuring method under the high gas-liquid ratio to be more widely applicable, the oilfield metering level is improved, the requirement of production process is met, and the measuring device has higher adaptability and high degree of integration and automation.

Description

technical field [0001] The invention relates to a foam crude oil metering device, which is a high-precision CO 2 A metering device and a metering method for high gas-liquid ratio foam crude oil. Background technique [0002] Domestic oilfields are using CO2 for low permeability reservoirs 2 In the production capacity construction in related fields of flooding development, the selection of single well production fluid measurement technology and measurement method plays an important role in the surface gathering and transportation treatment process, and is very important for the evaluation of CO in reservoir blocks. 2 It provides an important basis for the effect of drive development. Given CO 2 The produced fluid of a single flooding well presents obvious characteristics of foaming crude oil, and the foam is small and large, which requires high technical requirements for metering technology. CO 2 The high content of associated gas in a single flooding well and the high g...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B43/16
CPCE21B43/164E21B47/00Y02P90/70
Inventor 赵虎戚亚明胡筱波张侃毅夏新宇王立龙贾庆鹏李阳苏艳丽顾凯王婉璐孙洁朱步范张洁
Owner BC P INC CHINA NAT PETROLEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com