Heavy! PetroChina and Sinopec have made major breakthroughs in unconventional oil and gas exploration!

Recently, the first major breakthrough in shale oil exploration in Qaidam Basin, Qinghai Oilfield Chai Ping 1 well has been continuously released for 30 days, accumulating 1598.
77 cubic meters of self-injection crude oil; at the same time, a new breakthrough has been made in shale oil exploration, Fuling shale gas field Baima block shale gas proved reserves increased by 104.
883 billion cubic meters, the cumulative proven reserves of nearly 900 billion cubic meters
.

PetroChina Qinghai Oilfield Qaidam Basin shale oil

As of December 10, Qinghai Oilfield Chaiping 1 Well has been continuously released for 30 days, accumulating 1598.
77 cubic meters of self-injection crude oil, marking a major strategic breakthrough
in shale oil exploration in the Qaidam Basin.

Qaidam Basin has a late shaping period and a strong transformation in the later stage, the geological structure is extremely complex, the sediment source is broken, the maturity of oil and gas reservoirs is not high, and the reservoirs are thin, many, scattered and heterogeneous, although the exploration field is wide and the potential is large, but the difficulty is greater, which is the "hard bone"
of oil and gas exploration.

Wang Fuguo, an engineer at the Qinghai Oilfield Exploration Division, said: "Shale oil exploration started late in the Qaidam Basin, but the breakthrough of the Chaiping 1 well is due to the long-term geological theory research of Qinghai Oilfield, the leading supporting technologies at home and abroad such as the integration of complex mountain seismic collection and processing interpretation and interpretation, the evaluation of complex bedrock storage, and the breakthrough
of key core technologies such as horizontal well drilling and volume fracturing transformation.
”

Chaiping 1 well is a shale oil pre-exploration horizontal well deployed in the dry chai gou area of the Hero Ridge Structural Belt of the Qaidam Basin in Qinghai Oilfield, and on October 8, the volume fracturing 2.
0 process with the core of "dense cutting + limited flow perforation + large displacement + high-strength continuous sand addition of viscous slippery water" was adopted for fracturing construction, and a total of 124 clusters of fracturing workload in 21 sections was completed, with a total construction liquid volume of 34677 square meters and sand volume of 3301 square meters, creating a new record
for 8 fracturing construction projects in Qinghai Oilfield 。 On October 19, after the completion of fracturing construction, another 19 days of boiling wells were carried out, and on November 7, 2 mm nozzles were sprayed, and the maximum daily oil production was as high as 110 cubic meters, and the oil pressure was stable at more than
30 MPa.

Zhang Changhao, deputy chief geologist of Qinghai Oilfield Exploration Division, said: "Whether it is geological research or engineering practice, there are many innovation points in Chaiping 1 well, and the performance of continuous trial production and stable production has become the best exploration well
since the exploration of PetroChina shale oil 。 For the next step of shale oil exploration, Chaiping 1 well has accumulated accurate design experience in volume fracturing, meticulous organization ability of efficient construction, precision construction ability of high-intensity construction and production control ability of shale oil horizontal well, which is a landmark breakthrough well in the history of shale oil exploration and development in Qaidam Basin, and Hero Ridge Shale Oil has applied to become the latest demonstration area
for the efficient development of national continental shale oil.
”

Sinopec Fuling shale gas field Baima block shale gas

On December 13, the new report on the proven shale gas reserves of the Baima Block of the Fuling Shale Gas Field of Sinopec, the first large-scale shale gas field in China, passed the review of the Ministry of Natural Resources on December 9, and it was determined that the new proved reserves of the block were 104.
883 billion cubic meters
.
So far, the cumulative proven gas content of Fuling shale gas field has reached 824 square kilometers, and the cumulative proven reserves are nearly 900 billion cubic meters, accounting for 34%
of the proven reserves of shale gas in China.

Fuling shale gas field, located in Fuling District, Chongqing City, is one of the important gas sources of China's Sichuan gas transmission pipeline and an important resource base for
Sinopec's "gasification of the Yangtze River Economic Belt" action.
The Baima block of Fuling shale gas field discovered this time has the characteristics of "double complexity" of surface structure and underground structure, and belongs to a typical atmospheric pressure deep gas reservoir
.
In accordance with the idea of "zoning evaluation, test first, benefit construction and production, demonstration and leadership", Sinopec Jianghan Oilfield has accelerated scientific and technological innovation, and after six years of overcoming the technical bottleneck of deep atmospheric shale gas benefit development, the output of shale gas tested in a single well has increased from 40,000-60,000 cubic meters per day to 100,000-130,000 cubic meters
per day.
As of November, the maximum cumulative production of a single well in the Baima Block of Fuling Shale Gas Field exceeded 30 million cubic meters, which was at a high level among domestic atmospheric shale gas wells, which confirmed that the block has a good prospect of
scale increase and efficient development.

Fuling shale gas field began construction in December 2012, and entered commercial development ahead of schedule in March 2014, making it the first large-scale shale gas field
in China to enter commercial development.
In March 2017, the annual production capacity of 10 billion square meters was completed as scheduled, which can reduce carbon dioxide emissions by 12 million tons per year, which is equivalent to planting 110 million trees and parking 8 million cars
.
In 2018, 2020 and 2021, the cumulative gas production exceeded 20 billion square meters, 30 billion square meters and 40 billion square meters respectively, and took great strides across 4 tens of billions of production ladders to achieve leapfrog development
.
The successful development of Fuling shale gas field has set a new milestone in the history of China's energy development and opened a new journey
of China's energy revolution.

Up to now, Fuling Shale Gas Field has put into operation 643 wells, with a cumulative gas production of more than 41.
2 billion cubic meters and a daily gas production of more than 20 million cubic meters, providing a solid foundation
for the high-quality development of enterprises along the Yangtze River Economic Belt and ensuring national energy security.