Integrated intelligent bubble extraction and gas recovery technology helps stabilize production and increase efficiency in the northern gas field

As of August 31st, the North China Oil & Gas Branch has successfully applied the integrated intelligent bubble drainage technology of “On-line Diagnosis of Fluid Accumulation + Automatic Quantitative Injection” in the Beibei Gas Field, and completed the diagnosis of 393 gas wells.
, Intelligent injection bubble drainage 284 wells, a total of 119,000 wells were implemented, the overall bubble drainage success rate increased to 90.
5%, the annual decline rate of gas production dropped to 10.
5%, the natural gas production increased by 182.
54 million cubic meters, and the cumulative effect was 60.
66 million.
Yuan
.

The Daniudi gas field and Dongsheng gas field in the northern part of the Ordos Basin are important natural gas development positions for Sinopec.
There are 2,288 natural gas wells with an annual output of 4.
84 billion cubic meters of natural gas
.

Because the pressure coefficient of the northern Hubei tight low-permeability gas reservoir is less than 1, supporting drainage gas recovery technology is needed to assist the stable production of the gas well.
The foam drainage gas recovery technology has become the main drainage production of the northern Hubei gas field due to its low construction cost and good drainage effect.
Process: There are 1458 gas wells with bubble drainage technology, with a daily output of 10.
58 million cubic meters of natural gas, accounting for 74% of the total output of the northern Hubei gas field
.

　　However, as the energy of gas wells continues to decay, the difficulty of drainage and gas recovery has gradually increased, and the number of bubble drainage wells has also increased year by year.
The drainage technology gradually does not meet the current production needs, and there are problems such as unclear gas well liquid accumulation and bubble drainage timing, high labor intensity, low filling efficiency and accuracy
.

　　To this end, the company has innovated the technology optimization method of economic drainage and gas recovery technology for the whole life cycle of gas wells and the online quantitative diagnosis method of complex wellbore fluid accumulation.
Based on the remote control automatic foam drainage gas recovery and dosing device system, the two innovations have been formed.
The optimized diagnosis method is modularized and software-based, and is embedded in the back-end server of the remote control automatic foam drainage gas recovery and dosing device system, and integrated to form an integrated intelligent bubble drainage technology of "on-line diagnosis of effusion + automatic quantitative filling"
.

　　At present, the diagnostic accuracy rate of this technology is 94.
3%, the efficiency and accuracy of bubble drainage is 98.
5%, and the labor intensity is reduced by 96.
4%.
The goal of refined management of the bubble drainage technology and stable production and efficiency increase in the northern gas field has been initially realized.

.