my country's largest carbonate gas field has a cumulative gas production of 72.6 billion cubic meters

According to news from PetroChina Southwest Oil and Gas Field on the 3rd: As of June 30, China’s largest carbonate monolithic gas field, PetroChina Anyue Gas Field, has produced 7.
4 billion cubic meters of natural gas this year, a year-on-year increase of about 5%.
The cumulative production has been since the start of production.
Gas 72.
6 billion cubic meters
.

From major discoveries to continued stable production, CNPC's major scientific and technological projects have helped the efficient development of "super gas fields"

The Anyue Gas Field is located in the Suining and Ziyang cities of Sichuan and Tongnan District of Chongqing, with proven reserves exceeding one trillion cubic meters
.

Gas field reservoirs have low porosity and are prone to water invasion, and high-efficiency development faces huge challenges

During the "Thirteenth Five-Year Plan" period, PetroChina Southwest Oil and Gas Field organized a special research project on "High-efficiency Development Technology for Large Carbonate Gas Reservoirs".

Through core technologies such as fine gas reservoir description, high-yield well cultivation, and overall water control, it fully supported the high efficiency of "super gas fields".
Development

According to reports, the Southwest Oil and Gas Field has innovated the fine gas reservoir description technology for fracture-cavity carbonate gas reservoirs, and used the "multiple compound geological model + scattered wave numerical simulation" high-yield target identification technology to accurately construct high-yield geological models, "transparent gas reservoirs" "Yueran in front of him
.

The Southwest Oil and Gas Field has selected favorable development areas of more than 1,000 square kilometers, achieving a 100% success rate of development wells, and the proportion of high-yield gas wells per million cubic meters accounted for 79%, which has rewritten the traditional perception that “low-porosity gas reservoirs are difficult to produce high”

For the Anyue gas field, especially the Longwangmiao Formation gas reservoir, the number one problem of "water invasion" must be solved
.

In response to this, the Southwest Oil and Gas Field has established low-amplitude and high-pressure water-filled carbonate gas reservoirs with integrated water control technology for low-porosity and strong water-intrusion carbonate gas reservoirs with high requirements for optimal development and difficulty in stabilizing gas reservoirs.
The full life cycle progressive water control development model is "water control intrusion, mid-term flooding prevention and control, and late water seal prevention and control"

Southwest Oil and Gas Field also innovated a series of key technologies for real-time intelligent active water control for the development of strong water intrusion gas reservoirs, creating a domestic record for efficient numerical calculation of an 80 million grid model, which is far more refined than the second 20 million grid model in the country
.

Restore the true underground form as much as possible, greatly improve the development dynamic forecasting level, realize the accurate prediction of water intrusion conditions 3 months in advance, and reduce the time for formulating the production allocation optimization plan from 1 week to 20 minutes, realizing accurate fitting and matching of complex water invasion Simulation forecast

In terms of drilling technology, the Southwest Oil and Gas Field has solved the problems of low ROP and frequent formation leakage in complex lithological formations by forming large-scale deep sulphur-bearing carbonate gas reservoirs with highly deviated wells and horizontal well drilling and production technologies.

The technical problems of the difficult differential transformation of low-porosity heterogeneous reservoirs have been solved, the effective control of well control risks in the whole drilling cycle has been realized, and an effective guarantee for the safe and efficient development of the Anyue gas field has been provided

It is reported that the annual gas production of Anyue Gas Field in 2020 will account for about 7% of the domestic annual gas production
.

Since the development of the gas field, the GDP of Sichuan and Chongqing has increased by 640 billion yuan.
The natural gas produced can replace 87 million tons of standard coal, reduce carbon dioxide emissions by 35 million tons, and reduce sulfur dioxide by 1.
7 million tons.
This has helped build an important ecological barrier in the upper reaches of the Yangtze River.
The construction of the two-city economic circle in the Chengdu-Chongqing region has played an important role

Transfer from: China News Network