Beijing, China

China National Offshore Oil Corporation, or CNOOC Group , is a major national oil company in China. It is the third-largest national oil company in the People's Republic of China, after CNPC and China Petrochemical Corporation . The CNOOC Group focuses on the exploitation, exploration and development of crude oil and natural gas in offshore China.The company is owned by the government of the People's Republic of China, and the State-Owned Assets Supervision and Administration Commission of the State Council assumes shareholder rights and obligations on the government's behalf. One subsidiary, CNOOC Limited, is listed on the Hong Kong exchange; the other, China Oilfield Services, is listed on the Hong Kong and New York exchanges. Wikipedia.


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News Article | April 17, 2017
Site: en.prnasia.com

HONG KONG, April 14, 2017 /PRNewswire/ -- CNOOC Limited (the "Company", SEHK: 00883, NYSE: CEO, TSX: CNU) announced today that its parent company, China National Offshore Oil Corporation (CNOOC), has signed production sharing contract (PSC) with Husky Oil Operations (China) Limited (Husky) for Block 16/25 in the South China Sea. Block 16/25 is located in the Pearl River Mouth Basin. The block covers a total area of 44 square kilometers with a water depth of 100 meters. According to the terms of the PSC, Husky shall act as the operator during the exploration period and conduct exploration activities in the block mentioned above, in which all expenditures incurred will be borne by Husky. Once entering the development phase, CNOOC has the right to participate in up to 51% of the participating interest in any commercial discoveries of the block. After signing the above-mentioned PSC, except for those relating to CNOOC's administrative functions, CNOOC will assign all of its rights and obligations under PSC to CNOOC China Limited, a subsidiary of CNOOC Limited. More information about the Company is available at http://www.cnoocltd.com. This press release includes "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995, including statements regarding expected future events, business prospectus or financial results. The words "expect", "anticipate", "continue", "estimate", "objective", "ongoing", "may", "will", "project", "should", "believe", "plans", "intends" and similar expressions are intended to identify such forward-looking statements. These statements are based on assumptions and analyses made by the Company in light of its experience and its perception of historical trends, current conditions and expected future developments, as well as other factors the Company believes are appropriate under the circumstances. However, whether actual results and developments will meet the expectations and predictions of the Company depends on a number of risks and uncertainties which could cause the actual results, performance and financial condition to differ materially from the Company's expectations, including but not limited to those associated with fluctuations in crude oil and natural gas prices, the exploration or development activities, the capital expenditure requirements, the business strategy, whether the transactions entered into by the Group can complete on schedule pursuant to their terms and timetable or at all, the highly competitive nature of the oil and natural gas industries, the foreign operations, environmental liabilities and compliance requirements, and economic and political conditions in the People's Republic of China. For a description of these and other risks and uncertainties, please see the documents the Company files from time to time with the United States Securities and Exchange Commission, including the Annual Report on Form 20-F filed in April of the latest fiscal year. Consequently, all of the forward-looking statements made in this press release are qualified by these cautionary statements. The Company cannot assure that the results or developments anticipated will be realised or, even if substantially realised, that they will have the expected effect on the Company, its business or operations. For further enquiries, please contact:


Patent
China National Offshore Oil Corporation and CHINA FIELD SERVICES Ltd | Date: 2014-05-21

A system of formation sampling while drilling, comprising: a suction pup joint provided to pump out and clean the formation fluid; a sampling pup joint provided to sample and store the formation fluid; a setting pup joint provided between the suction pup joint and the sampling pup joint and provided to establish a fluid channel between the formation fluid and the suction pup joint, the sampling pup joint; and an electrohydraulic high voltage connection device provided between the setting pup joint and the sampling pup joint. The embodiments of the present invention can be applied in the field of formation exploration technology, the function of storing the formation sample in the process of logging while drilling can be accomplished and the current logging instrument can be effectively optimized, the universality and precision of the current logging function can be effectively improved according to the embodiments of the present invention.


Patent
China National Offshore Oil Corporation and China Oilfield Services Ltd. | Date: 2013-12-25

A method of formation testing and a formation testing instrument, comprising a first pump, a dual packer module, a reverse injection module and a second pump, the dual packer module being provided with a support arm at one side thereof capable of setting after deployed; and the dual packer module being provided with first and second probes at the other side, wherein the first probe is located above the second probe and the first and second probes can establish a channel with the formation; the second pump injecting the acidizing liquid in the reverse injection module into the fluid region in the formation by the second probe; and the first pump sucking the fluid in the formation by the first probe.


Patent
China offshore Oil Engineering Co. and China National Offshore Oil Corporation | Date: 2013-10-01

A new jacket design method is disclosed, especially for deepwater water heavy jacket applications. The method utilizes a special type of air bags, called Ship Launching Air Bags (SLAB), to provide low cost temporary buoyancy used for jacket installation purpose only. A designer only needs to satisfy the jacket stiffness for the resistance of environmental and gravity loads without the consideration of jacket reserve buoyancy. The required jacket reserve buoyancy could be increased with the utilization of temporally attached SLABs during the jacket installation.


Patent
China offshore Oil Engineering Co. and China National Offshore Oil Corporation | Date: 2014-02-23

A new pneumatic load transfer and shock absorbing system is disclosed. The pneumatic system includes a layer of air-bags to perform two basic functions during a floatover installation operation: 1) lifting the platform deck from the support to create additional air gaps at the mating surfaces, and the heave motions of the lifted platform deck may be reduced; 2) performing as a shock absorbing device with variable vertical stiffness easily controlled by the air-bag internal air pressure during the mating operation and the separation operation.


Patent
China Oilfield Services Ltd. and China National Offshore Oil Corporation | Date: 2013-10-29

The present application relates to a high temperature carbon dioxide corrosion inhibitor comprising the following components by mass percent: amide compound 1550%, organic alkynol 1025%, mercaptan acid 515%, piperidine 525%, mercaptopyridine 515%, and solvent 2560%. The corrosion inhibitor has excellent corrosion inhibition for CO_(2 )corrosion of oil field water system at a high temperature (150250 C.).


Patent
China National Offshore Oil Corporation and China Oilfield Services Ltd. | Date: 2013-12-25

A high-pressure fluid mixing pump control system and a fluid suction control method, the system comprises a transmission threaded rod and a resolver sensor, wherein: one end of the transmission threaded rod is connected to an oil cylinder piston of a mixing pump, while the other end of the transmission threaded rod is connected to the resolver sensor either directly or via a rotary element that rotates coaxially with the transmission threaded rod. The high-pressure fluid mixing pump control system implements precision control via a mechanical means, converts a linear motion of the piston into a rotary motion, and utilizes the resolver sensor for precision measurement of a rotation angle, thus acquiring a piston displacement amount, and finally acquiring a suction volume. At the same time, an accelerator and an electric brake are also designed, for controlling starting and stopping of the mixing pump.


Patent
China Oilfield Services Ltd. and China National Offshore Oil Corporation | Date: 2014-01-24

The present invention relates to an oil recovery process with composition-adjustable multi-component thermal fluid, the process comprises: adding oxygen produced by air together with fuel and water into a reactor, in which the oxygen and the fuel combust to produce flue gas and heat, the heat heats water to generate hot water/steam, and then the flue gas and the hot water/steam are mixed to form multi-component thermal fluid, wherein the purity of oxygen added into the reactor is controlled so as to produce the multi-component thermal fluid with various mass ratios of flue gas to hot water/steam; then the obtained multi-component thermal fluid with various mass ratios of flue gas to hot water/steam are injected into various types of oil reservoirs for oil recovery. The oil recovery process of the present invention is applicable for various types of crude oil reservoirs.


The present disclosure relates to a grouting and welding combined connection joint and an offshore installation method thereof, characterized in that: it comprises a set of grouting systems disposed inside of the annular space formed by an inner shell of the central pore canal of a column with large cross section and an outer wall of a column with small cross section, as well as a group of brackets welded on a top deck of a column with small cross section and an inner shell of the central pore canal of the column with large cross section. The grouting and welding combined connection joint provided by the present disclosure has advantages of being able to adapt to the connection of different dimensions of columns, and having simple offshore installation, highly reliable structural safety and low cost.


Patent
China National Offshore Oil Corporation and China Oilfield Services Ltd. | Date: 2013-11-20

A pushing and jam-releasing pup joint of a formation tester comprises a first jam-releasing arm (1), a first three-way reversing valve (V1), a two-way reversing valve (V2) and a third three-way reversing valve (V4), a withdrawal cavity (Q11) of the first jam-releasing arm (1) is connected with the first three-way reversing valve (V1) which can communicate with an energy accumulation cavity (NQ) of an energy accumulator and the two-way reversing valve (V2), the two-way reversing valve (V2) can be communicated with a pressure oil main line (G2) of a hydraulic system, and an extension cavity (Q12) of the first jam-releasing arm (1) is connected with the third three-way reversing valve (V4) which can communicate with the pressure oil main line (G2) and a return oil main line (G1) of hydraulic system. Jam-releasing pup joint effectively solves the problem of jam release when mud adheres to EFDT and makes same jammed.

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