oil & gas exploration
we achieved 1 great breakthrough, 4 important breakthroughs, 10 new breakthroughs,
15 commercial discoveries and 5 potentials, which exceeded the annual tasks.
for oil exploration, significant breakthrough was made in shunbei block 3
area in tarim basin, which opened up the second production capacity in shunbei oil
and gas field. such breakthrough was also made in the deep exploration of jiyang
depression in bohai bay basin. important commercial discoveries were made in the
exploration of yongjin oilfield in the middle of junggar basin. new discoveries
were made in the risk exploration of liulushe area in subei basin.
for conventional gas exploration,an important breakthrough was made in the
exploration of paleozoic in fuxian county in the south of ordos basin, with a proven
reserves of exceeding 100 billion cubic meters in dongsheng gas field to the north.
the exploration results of tight gas in the deep layers of sichuan basin and songliao
basin continue to expand; new breakthroughs were also made in the exploration of
wuyuanting lithological gas reservoir in the sea area.
for shale gas, a major breakthrough was made in the deep structural exploration
in dongxi, qijiang of sichuan basin, and the exploration of atmospheric shale gas
in nanchuan realized discovery, exploration and construction in the same year.
we improved our construction scale for oil production capacity and reduced the decline
rate of existing oil fields. we produced 6,000 tonnes of crude oil more than our
for the new capacity, we added 50.51 million tonnes of reserve available
for development. the one million-tonne production and construction project (phase
i) in shunbei oil and gas field was solidly pushed ahead. the construction and production
scale of challenging reserves in jiyang continued to expand. the integration of
rolling assessment and construction in the west slope of qintong depression was
rapidly launched, and a breakthrough was made in the integrated test of geological
engineering in yongjin oilfield. the annual added production capacity reached 2.615
million tonnes, increased by 212,000 tonnes, and the new well oil production increased
by 154,000 tonnes.
for the existing capacity, we strengthened the delicate description, fine
water recovery and tapped potential meticulously, and made more efforts to stabilize
production. the annual natural decline rate was stabilized at 10.3%, the natural
decline rate of water- flooding reservoir was reduced by 0.5 percentage point, and
the thermal recovery heavy oil and gas ratio was stabilized at 0.53. the gas-flooding
method applied in tahe carbonate fractured reservoir increased its new oil production
by 800,000 tonnes, an increase of 90,000 tonnes year on year. we popularized application
of large-scale eor technology, implemented the demonstration project of heterogeneous
composite flooding eor, continued to promote the six pilot tests, focused on the
optimization of existing recovery projects, and increased oil production through
chemical flooding by 1.07 million tonnes in the whole year.
natural gas development
for conventional gas, we actively promoted the production capacity construction
in western sichuan and other places, accelerated the rolling production construction
in heba, zhongjiang, longfengshan and other places, and continued to focus on the
stable production of major gas fields such as puguang, yuanba, daniudi, etc. we
added 1.73 billion cubic meters production capacity annually, produced 21.88 billion
cubic meters of gas, increased by 1.3 billion cubic meters year on year.
for shale gas, we actively promoted the production capacity construction
of fuling and weirong shale gas fields, accelerated the rolling construction and
production of shale gas in nanchuan, and took the lead in promoting the three-dimensional
development and adjustment of the existing area of fuling shale gas field in china.
we achieved a new annual shale gas production capacity of 2.2 billion cubic meters,
produced 7.35 billion cubic meters of gas, up by 720 million cubic meters compared
with last year.
for coal-bed methane, we steadily arranged our intricate development in yanchuan
south gas field, and achieved an annual gas output of 360 million cubic meters.