Jinda Condensate Natural Gas Two-phase Flowmeter

In the final of the 2nd Jiangsu Science and Technology Entrepreneurship Contest, the “oil and gas well online gas-liquid two-phase metering equipment” project brought by the Tianjin University team filled the gap with low-cost and high-tech to meet the oilfield production demand. The good results of the third prize of the contest team.

In recent years, in order to protect the environment, the domestic demand for clean energy such as natural gas has been increasing year by year. During the 12th Five-Year Plan period, the share of natural gas in primary energy consumption will increase from 4% to 8%. However, the gas-liquid two-phase on-line measurement equipment without separation at the wellhead of the oil and gas field is still blank. In the final of the 2nd Jiangsu Science and Technology Entrepreneurship Contest, the “oil and gas well online gas-liquid two-phase metering equipment” project brought by the Tianjin University team filled the gap with low-cost and high-tech to meet the oilfield production demand. The good results of the third prize of the contest team.

“Don’t belittle this meter that covers an area of ​​only 1 square meter! It can replace a gas gathering metering station that is currently used in oil and gas fields.” Song Xianzhong, head of the project and angel investor, said that the gas that was just mined at the wellhead was a kind of wet. gas. In order to obtain natural gas flow data, the current gas field well group needs to set up high-pressure pipelines of several kilometers or more than ten kilometers, and build thousands of square meters of gas gathering metering stations to separate moisture into gas and liquid in order to obtain measurement results. Each metering station costs an average of ten million yuan.

The condensate gas two-phase flowmeter independently developed by Tianjin University has been applied for four years at PetroChina Southwest Oil & Gas Field Branch Co., Ltd., and its economic benefits have exceeded 90 million yuan. It has recently won the first prize of the "2013 China Association for Measurement and Testing of Science and Technology Progress Award". The technology is safe and radiation-free, has reached the international advanced level of the same kind, fills the domestic gap, and is expected to be promoted in China's natural gas exploitation field, promote the effective development and utilization of clean energy in China, and achieve sustainable development.

At present, the moisture in the oil and gas industry production process is mainly measured by gas-liquid separation. In order to obtain natural gas flow data, the gas field well group needs to set up high-pressure pipelines of several kilometers or dozen kilometers, and build thousands of square meters of gas collection and measurement stations, which cost an average of tens of millions. The metering station needs to separate moisture into gas and liquid in order to obtain measurement results.

Tianjin University's condensate gas two-phase flowmeter has realized the gas and liquid two-phase flow rate of the natural gas produced at the wellhead on-line without separation measurement, and can measure the gas and liquid flow in real time. The flow meter covers an area of ​​about 1 square meter, the price is only a fraction or even one tenth of the price of foreign similar products applied to land-based gas fields, which can replace imports, significantly reducing the cost and manpower of one-time infrastructure investment, Management costs.

This technology has timely, accurate, and long-term knowledge of the production dynamics of single wells, well areas, gas reservoirs, and gas fields, as well as the judgment of gas well and gas reservoir production changes and water intrusion conditions, the optimization of production gas recovery processes, and the prolongation of the production life of gas wells. It is of great practical significance to improve the recovery of gas fields and protect the geological environment.

According to project leader Xu Ying, Associate Professor of the Department of Automation of the School of Electrical and Automation Engineering of Tianjin University, since 2007, Tianjin University has been responsible for the research project “Research and Application of Dynamic Multi-parameter Measurement Technology for Condensed Natural Gas”, which has received the 863 project of the Ministry of Science and Technology and the State Natural Science Fund and Tianjin Science and Technology Plan Project Funding. The research results of the project have authorized 5 patents, and they have been successfully industrialized. The corresponding corporate standards have been formulated. Through the third party's formal evaluation, the People's Republic of China has obtained licenses for manufacturing measuring instruments and published more than 20 papers. In early 2010, this technology was applied to the CNPC Oil and Gas Field Standardization Design Demonstration Project, and was applied in the Sichuan-Central and Weinan Oil and Gas Mines of the Southwest Oil & Gas Field Branch. By the end of 2013, more than 1,500 logging tasks had been completed. In 2013, due to the application of new technologies, 50 wells groups have been unattended and truly achieved the single-well gas-liquid mixture transmission, saving large-scale gas-liquid separators.

In the first half of this year, the "Research and Application of Multi-parameter Dynamic Measurement Technology of Condensate Natural Gas" project won the first prize of "2013 China Measurement and Measurement Society Science and Technology Progress Award". The award is organized by the China Association for Measurement and Testing, and is registered with the National Awards Office. It is a Social Strength Award with the qualification of the Recommended National Award. The China Association for Measurement and Testing is a Level 1 Society. In 2013, more than 120 projects were declared in the country. After a scientific and rigorous evaluation of the Internet, the review of the meeting and the final evaluation of the defense, 8 first prizes were finally awarded, accounting for 6% of the declared projects.

Song Xianzhong said that since the beginning of the previous research and theoretical research since 2004, this project can be described as "a decade of grinding a sword." At present, with its unique design and core technology, the equipment has reached internationally advanced standards in terms of accuracy; there is no radiation in terms of safety; the price is only 200,000 to 800,000 yuan per set, which is one-fifth that of similar foreign equipment.

It is reported that from December 2012 to July 2014, the condensate gas two-phase flowmeter has been continuously operating normally for more than 550 days at the Yingmai 7 gas gathering station in the Yingmaili Field, Tarim. In the past four years in the application of PetroChina Southwest Oil & Gas Field Branch, the economic benefits have exceeded 90 million yuan. However, Song Xianzhong admitted that at present the project has not yet been operated and mass-produced in the form of a company. “This time participating in the 2nd Jiangsu Science and Technology Entrepreneurship Competition, the first is to use the opportunity of the competition to promote the project, and the other is to get valuable advice from the professional judging panel for the future operation and development.” Song Xianzhong said that Jiangsu’s support for science and technology projects Big, entrepreneurial environment and conditions are also better. At present, the project has already decided to settle in Suzhou and it will register and set up a company in September.