| | | In June 2006, CNPC signed an oil and gas exploration agreement with Uzbekneftegaz, which came into effect on August 30.
This project includes five onshore exploration blocks, covering a total area of 34,000 square kilometers. These blocks are located in three large petroliferous basins: Ustyurt, Amu Darya and Fergana. 7,000 kilometers of 2D seismic data and 1,320 square kilometers of 3D seismic data will be acquired and 27 various exploration wells will be drilled in the following five years.
In 2008, CNPC and Uzbekneftegaz signed a letter of intent to jointly boost the output of mature oilfields in Fergana Basin.
Aral Sea project
Located in Ustyurt Basin, the Aral Sea project has an exploration area of 12,000 square kilometers. In August 2006, a consortium comprising of CNPC, Uzbekistan's Uzbekneftegaz, Russia's Lukoil, Malaysia's Petronas and South Korea's KNOC signed a production sharing contract with the government of the Republic of Uzbekistan on the exploration and development of oil and gas deposits in the Aral Sea.
In 2010, high-yield gas flow was obtained from a test at well WAEX-1, the first exploration well, in our joint Aral Sea project.
Mingbulak Oilfield Project
Mingbulak Oilfield is situated on the northern edge of Fergana Basin. Discovered in 1992, the oilfield contains more than 30 million tons of recoverable reserves buried at a depth of more than 5,000 meters underground. In October 2008, CNPC and Uzbekneftegaz signed a cooperation agreement to create a JV to develop Mingbulak Oilfield.
In 2009, we completed ultra-deep well Dzhida-3 and Dzhida-4, and now the wells have entered the production testing stage in Kara-Dzhida region. The designed depth of well Dzhida-4 is 6,350 meters, and the actual drilling depth has reached 6,596 meters, a record depth in CNPC’s overseas drilling and formation pressure. It also created a record drilling depth in Uzbekistan. |
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| | | | CNPC provides geophysical prospecting, well drilling and logging services in Uzbekistan. In 2008, we made smooth progress in 3D prospecting in the Amu-Darya Basin of Uzbekistan. In 2010, well Nangong-1 drilled by Western Drilling Engineering Company, a wholly owned subsidiary of CNPC, in Uzbekistan was completed at a depth of 5,717 meters, 21 days ahead of schedule. This well registered a record in terms of drilling depth, as well as the one-pass success of electrical logging, casing, and cementing, along a 311mm wellbore using a 70 Rig.
In addition, CNPC is a major petroleum equipment supplier to Uzbekistan. In 2003, CNPC exported 10 ZJ50DB electric drill rigs to Uzbekistan for the first time and set up a drill rig service center and a spare parts warehouse in this country.
Construction of Central Asia-China Gas Pipeline
The Central Asia-China Gas Pipeline is the first long-distance gas pipeline that we built and operate that traverses several foreign countries. This 3,666km-long pipeline consists of Line A and B installed in parallel to each other, starting at Turkmen-Uzbek border city Gedaim, running through Uzbekistan and Kazakhstan, and reaching Horgos in China's Xinjiang Uygur Autonomous region.
In June 2008, 490km-long Uzbek segment of the Central Asia-China Gas Pipeline formally commenced construction. On December 14, 2009, Central Asia-China Gas Pipeline became operational. JV ASIA TRANSGAS Company is in charge of the construction and operation of Uzbek section of Central Asia-China Gas Pipeline. On October 26, 2010, natural gas was input into Line B of the Central Asia-China Gas Pipeline, marking the operation of the dual line.
Drilling in High-pressure Salt Water Layers
In Uzbekistan, CNPC tackled one of the world's most difficult drilling problems. The drilling challenge in the country's high-pressure salt water layers of Kokedumalak oilfield had troubled Uzbekistan's petroleum community for 16 years. More than 100 wells had been discarded because of encountering high-pressure salt water layers. In 2006, this problem was able to be solved by our technologies and experience, and we successfully completed six wells in the high-pressure salt water layers. One example was well No. 352, a horizontal well with the longest horizontal interval in the oilfield. After the directional thrust through the high-pressure salt water layer, we completed this well, 4,114 meters in designed depth and 870 meters in horizontal section length. |
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| | | | Jun. 9, 2010 CNPC signed a framework agreement on purchase and sale of natural gas with Uzbekneftegaz, whereby Uzbekistan will supply 10 billion cubic meters of natural gas to China annually.
Dec. 14, 2009 Central Asia-China Gas Pipeline became operational.
June 27, 2009 CNPC and NHC Uzbekneftegaz sign agreements on oil and gas cooperation. These include an agreement on reinforcing oil and gas cooperation, a supplementary agreement on cooperation principles for the joint exploration and development of Mingbulak Oilfield, and an agreement on principles for the establishment of a joint venture.
Oct. 15, 2008 An agreement is signed with Uzbekneftegaz on the joint venture development of the Mingbulak Oilfield, which is located at the northern edge of the Fergana Basin, Uzbekistan, and contains more than 30 million tons of recoverable reserves.
Jun. 30, 2008 Construction of the Uzbek section of the Central Asia-China Gas Pipeline began in Bukhara, a city in southern Uzbekistan. ATG, a natural gas pipeline joint venture between CNPC and Uzbekneftegaz, will be in charge of the construction and operation of the Central Asia-China Gas Pipeline on Uzbek territory.
Aug. 2006 The Aral Sea Oil and Gas Development Consortium of Investors, which composed of CNPC, Uzbekneftegaz, Lukoil, Petronas and Korea National Oil Corporation, signed a production sharing agreement with the Government of the Republic of Uzbekistan in Tashkent, for the activities involving exploration and development projects in the Uzbek section of the Aral Sea.
Jun. 2006 CNPC signed an oil and gas exploration agreement with Uzbekneftegaz.
Jun. 2004 CNPC and Uzbekneftegaz signed an agreement on cooperation in oil and gas sector. |
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