Send clean shale gas out of the mountains-a record of green and safe production in the Fuling shale gas field in Jianghan Oilfield

On June 30, at the Baitao Gathering Station in the Fuling Shale Gas Field of Jianghan Oilfield, employees hand-held detectors to carefully inspect the equipment and pipelines to prevent shale gas leakage
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It is reported that more than 1,700 cubic meters of shale gas is sent out of Dashan every day

Since the beginning of this year, the Fuling Shale Gas Company has carried out measures such as green gas production, technological improvement, energy conservation and carbon reduction, to ensure shale gas production and help carbon neutrality
.

Up to now, the Fuling shale gas field has produced a total of 3.

Intensified mining boosts production growth

Intensified mining boosts production growthIntensified mining boosts production growth

Fuling shale gas contains more than 98% methane, has a high calorific value, does not contain toxic and harmful substances such as hydrogen sulfide and carbon monoxide, and is a high-quality clean natural gas
.

It is understood that burning 1 cubic meter of shale gas can reduce carbon dioxide emissions by 40%-50% and nitrogen oxides by 44%-80% compared with burning the corresponding amount of coal, without the production of sulfur dioxide and soot

Fuling Shale Gas Company takes "contributing clean energy to the country" as its mission.
Since the beginning of this year, it has continued to increase its clean energy productivity, carefully manage gas wells, speed up the commissioning of new wells, and make every effort to promote steady growth in gas field production
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The commissioning of new wells is an important means to increase gas field production
.

This year, the company strengthened production capacity construction, increased production of new wells, and completed the preparation of all new production and construction project plans ahead of schedule; refined construction arrangements, optimized the use of new technologies such as drilling, fracturing, and gas testing, to ensure that new wells were put into operation at an increased speed and continued stable production

At the same time, the gas field has continued to optimize gas well management to increase production and recovery efficiency, deepen the understanding of gas-water flow laws at different development stages, and implement "one well, one strategy" management measures to help the gas field stabilize production and increase production
.

Pressurized production is an effective means to increase production of gas wells.

　　Green drainage promotes energy saving and emission reduction

　Green drainage promotes energy conservation and emission reduction　Green drainage promotes energy conservation and emission reduction

　　Recently, due to increased fluid accumulation at the bottom of the well, the output of the Jiaoye 63-3HF well has dropped to zero.
The technicians have adopted "pressurization + bubble drainage" drainage measures.
The daily output of the well reached 33,600 cubic meters
.

　　"Since this year, we have adopted a variety of drainage gas production measures such as gas lift operations, foam drainage, plunger drainage, etc.
, to replace the previous spraying and drainage measures to promote green and low-carbon production of gas fields
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" Li Mu, engineer at the Fuling Shale Gas Company Technology Center Say

　　In order to improve the level of green production in the gas field, Fuling Shale Gas Company, based on the production principle of "clean energy and green development", tried its best to reduce the use of blow-out and drainage, draining wellbore fluids, etc.
, and actively carried out various low-carbon and environmentally-friendly drainage.
Research on measures to increase production to reduce greenhouse gas emissions
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　　“Usually, a gas well needs to burn about 2,000 cubic meters of gas for one discharge, which wastes resources and pollutes the environment, which is not conducive to the economic and environmental development of the gas field
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” Li Mu said

　　In view of the liquid accumulation in each gas well, the technicians adopted compressor gas lift, adjacent well gas lift, foam drainage, plunger drainage and other measures to strengthen the "pressurization + bubble drainage", "gas lift + bubble drainage" and other composite drainage processes Use, greatly reduce the frequency of spraying and draining operations
.

　　Since the beginning of this year, Fuling Shale Gas Company has adopted various liquid drainage and gas production technology measures for 193 well times.
The cumulative measures have produced 329 million cubic meters of gas, which can reduce the combustion of 386,000 cubic meters of shale gas
.

　　Improve technology to ensure safe production

　Improve technology to ensure safe production　Improve technology to ensure safe production

　　The Fuling shale gas field has complex stratum.
It often encounters shallow gas, fracture gas, and occasionally hydrogen sulfide during construction.
If accurate forecasting is not possible, it will become a hidden danger in production safety
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　　The company has always strictly implemented the "Natural Gas Well Engineering Safety Technical Specifications".
During the drilling process, the logging tool was used to monitor drilling production in real time to prevent shallow gas and fracture gas from overflowing, and reduce safety and environmental risks and the environment.
Pollution
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This year, the company has forecasted anomalous phenomena 49 times in total, with a forecast accuracy rate of 100%

　　By improving the gas test and production method and adding a back pressure valve to the gas test process, a single well can reduce the burning of shale gas by 300,000 cubic meters; further optimize and simplify the blowout demand production system, and single well testing reduces the blowout time In 12 hours, the cumulative annual reduction of shale gas venting and burning is more than 4 million cubic meters; gas gathering stations and dehydration stations adopt fully enclosed gathering and transportation processes, and technicians design recovery pipelines at the outlet of the flash tank of the dehydration unit of the gas gathering station, which can be recycled every year The natural gas is about 6000 cubic meters
.

　　At present, the gas field has achieved full coverage of grid electric drilling rigs and continued promotion of electric drive fracturing equipment.
Compared with traditional diesel drive equipment, electric drive equipment has reduced energy consumption by 33.
2% and noise by 46.
3% on average
.