Beijing, China

China National Petroleum Corporation is a Chinese state-owned oil and gas corporation and the largest integrated energy company in China. Its headquarters are in Dongcheng District, Beijing.CNPC is the parent of PetroChina, the fourth largest company in the world in terms of revenue as of July 2014. Wikipedia.


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Patent
CNPC United States Corporation and China National Petroleum Corporation | Date: 2015-10-08

Crosslinked high molecular weight acrylamide and 2-acrylamido-2-methylpropane sulfonic acid copolymers in inverse emulsion form act as inhibitive and encapsulating agents for water-based drilling fluids system. The crosslinked copolymer are particularly useful for high salt, high density drilling fluids in high temperature and high pressure applications.


News Article | May 24, 2017
Site: www.theguardian.com

China’s credit rating has been downgraded by Moody’s for the first time in almost 30 years over fears that slowing growth and rising debts will weaken the world’s second largest economy. The agency lowered China’s sovereign rating by one notch to A1 from Aa3, putting it in the same category as countries such as Japan and Israel. The outlook was raised to stable from negative. Moody’s said the downgrade reflected its expectations that “China’s financial strength will erode somewhat over the coming years, with economy-wide debt continuing to rise as potential growth slows”. The last time Moody’s cut China’s credit rating was 1989, the same year as the Tiananmen Square protests. The new move frustrated Beijing, where the finance ministry accused Moody’s of overestimating the risks facing the economy. “Moody’s views that China’s non-financial debt will rise rapidly and the government would continue to maintain growth via stimulus measures are exaggerating difficulties facing the Chinese economy, and underestimating the Chinese government’s ability to deepen supply-side structural reform and appropriately expand aggregate demand,” the ministry said in a statement. The downgrade is likely to increase – if only modestly – the cost of borrowing for Beijing and Chinese state-owned organisations, and it remains within the investment grade rating range. The negative view initially weighed on Asian markets, commodities and China’s currency on Wednesday. Moody’s said Beijing’s planned economic reforms would not avert a significant rise in debt: “While ongoing progress on reforms is likely to transform the economy and financial system over time, it is not likely to prevent a further material rise in economy-wide debt, and the consequent increase in contingent liabilities for the government.” Government stimulus has been a key driver of growth in recent years, but it has also led to a sharp rise in credit and debt levels. Moody’s expects growth to slow to about 5% over the next five years. Last year the Chinese economy grew by 6.7% – the weakest since 1990. Moody’s also cut the rating of 26 state-owned enterprises by one notch, shortly after the main sovereign downgrade. The list included China National Petroleum Corporation, China Three Gorges Corporation, Guangzhou Metro Group, and Dongfeng Motor Corporation. China’s finance ministry insisted the country’s GDP would continue to grow at medium to high levels “ and that will provide fundamental support to fend off local government debt risks”. The ministry added: “China’s government debt risks will not change dramatically in the period of 2018-20 from 2016.” Moody’s expects government debt to rise to 40% of GDP by the end of 2018, and to 45% by 2020. Luc Froehlich, head of investment directing for Asian fixed income at Fidelity International, said China was facing a number of issues: “The downgrade is yet another sign of the challenges faced by China, which is juggling rising leverage, declining economic growth rates and ongoing structural reforms. “Despite these mounting pressures, we are confident that China’s central bank and its regulators are firmly in control of the situation.” Chang Liu, China economist at Capital Economics, said activity in the country was likely to slow further in the forthcoming quarters as officials continue their efforts to rein in credit risks. He said a weaker property market could also start to weigh on the wider economy. “The property sector may also become a headwind to growth in the coming quarters. There are already signs that property sales are cooling due to recently imposed curbs on residential purchases. If this continues, developers may begin to slow the pace of construction.” The sovereign downgrade brought Moody’s into line with Fitch’s rating; Standard & Poor’s rates China one notch above its two rival agencies.


Patent
China National Petroleum Corporation and Cnpc Drilling Research Institute | Date: 2016-11-29

The present disclosure provides a casing windowing method and tool using coiled tubing; the windowing method comprises the steps of: a) preparing a borehole, including drifting a casing, and scraping an inner wall of the casing; b) hanging a positioning assembly in the casing, including seating the positioning assembly at a wellhead of the borehole, and after the positioning assembly is put down to a predetermined position in the casing, hanging a hanger of the positioning assembly at the inner wall of the casing; c) fixing a whipstock at a down-hole of the borehole, including seating the whipstock at the wellhead, and inserting a guiding assembly of the whipstock into the hanger so that an orientation of a window inclined plane of the guiding assembly meets a requirement of window orientation; and d) windowing the casing, including seating a tapered windowing mill at the wellhead, and after the tapered windowing mill is put down to the window inclined plane of the guiding assembly, starting the tapered windowing mill to perform a window sidetracking of the inner wall of the casing. The casing windowing method and tool using coiled tubing of the present disclosure can accurately adjust the orientation of the inclined plane of the whipstock, and the operation is simpler, safer and more reliable.


Patent
China National Petroleum Corporation, China University of Petroleum - Beijing and Green Technology Ltd Co. | Date: 2016-03-22

The present invention relates to a bimetallic mercaptan conversion catalyst for sweetening liquefied petroleum gas at a low temperature, which is prepared by using an Al_(2)O_(3)SiO_(2 )composite oxide as a carrier to support bimetallic active components vanadium and nickel. The bimetallic mercaptan conversion catalyst has a proper specific surface area and more metal active center sites, and has advantages of simple preparation, an efficient mercaptan conversion ability even at a low temperature, and causing no saturation and polymerization of olefins. The bimetallic mercaptan conversion catalyst exhibits superior mercaptan conversion performance in LPG sweetening, has strong adaptability to starting materials, and can also nearly completely remove trace carbonyl sulfide contained in LPG.


Patent
China National Petroleum Corporation and BGP Inc. | Date: 2016-09-28

An automatic inspection and monitoring method based on time domain slotting control, belonging to the technical field where the field personnel can automatically inspect and monitor a field device of a seismic apparatus in the seismic exploration production. A method of extraction and transmission of a seismic apparatus host on the information of a field device is implemented by a master control program, test information about the seismic apparatus host on the field device can be automatically extracted and classified from the seismic apparatus host, and according to a designed push protocol, a protocol encoding is conducted; a data frame block is automatically generated; and then the information is delivered via a broadcasting station; an encoding protocol of information push is designed for avoiding information loss caused by signal instability, etc. during information push. According to the protocol, the state information on the field device is encoded to generate a data frame block. There is no more need in the present invention for the operating personnel of the seismic apparatus to read and broadcast the content of the field device item by item, and it only needs to set a software operation mode, so that the automatic extraction and transmission of the state information on the field device can be extracted and transmitted.


Patent
China National Petroleum Corporation and BGP Inc. | Date: 2016-05-19

An automatic inspection and monitoring method based on time domain slotting control, belonging to the technical field where the field personnel can automatically inspect and monitor a field device of a seismic apparatus in the seismic exploration production. A method of extraction and transmission of a seismic apparatus host on the information of a field device is implemented by a master control program, test information about the seismic apparatus host on the field device can be automatically extracted and classified from the seismic apparatus host, and according to a designed push protocol, a protocol encoding is conducted; a data frame block is automatically generated; and then the information is delivered via a broadcasting station; an encoding protocol of information push is designed for avoiding information loss caused by signal instability, etc. during information push. According to the protocol, the state information on the field device is encoded to generate a data frame block. There is no more need in the present invention for the operating personnel of the seismic apparatus to read and broadcast the content of the field device item by item, and it only needs to set a software operation mode, so that the automatic extraction and transmission of the state information on the field device can be extracted and transmitted.


Patent
China National Petroleum Corporation and BGP Inc. | Date: 2016-09-28

A monitoring system for use in seismic instrument arrangement in petroleum exploration, belonging to the technical field of network transmission of seismic instrument arrangement information, comprises a host server and a hand-held terminal device, wherein the host server is configured to be connected to a host machine of a seismic instrument, manipulated by an instrument operator, can extract the seismic instrument arrangement information, classify field arrangement information based on the corresponding setting and transmit the arrangement information by using a 2G/3G network; the hand-held terminal device can receive the field arrangement information transmitted by the host server, by the 2G/3G network, and alarm and remind line inspection personnel to conduct an arrangement check; after completing the inspection task, the line inspection personnel can send inquiry information via the hand-held terminal device to inquire of the instrument operator about the line inspection condition. The present invention reduces the difficulty of checking an arrangement at the time of the seismic exploration and production, shortens the required time for checking an arrangement and plays an important role in improving a production efficiency of seismic exploration.


Patent
China National Petroleum Corporation and BGP Inc. | Date: 2015-02-18

Provided is a method for performing layer Q factor inversion by using an amplitude spectrum attribute of a downlink wave of vertical seismic profile data in a geophysical exploration data processing technology. In the method, first an F-K (frequency-wave number) method is used to perform wave field separation on VSP original data, so as to obtain a downlink wave; a downlink sub-wave and a monitoring sub-wave are selected to undergone Fourier transform to obtain an amplitude spectrum, polynomial fitting is performed on the amplitude spectrum to obtain an equivalent Q, and a formula between the equivalent Q and a layer Q is used to perform inversion, so as to obtain the layer Q. The method has a strong capability of resisting random disturbance, and is capable of removing a difference of triggering sub-wave. The algorithm is simple and can greatly save workload; moreover, the layer Q value obtained through inversion has a desirable stability and high precision.


Patent
China National Petroleum Corporation and BGP Inc. | Date: 2016-05-19

A monitoring system for use in seismic instrument arrangement in petroleum exploration, belonging to the technical field of network transmission of seismic instrument arrangement information, comprises a host server and a hand-held terminal device, wherein the host server is configured to be connected to a host machine of a seismic instrument, manipulated by an instrument operator, can extract the seismic instrument arrangement information, classify field arrangement information based on the corresponding setting and transmit the arrangement information by using a 2G/3G network; the hand-held terminal device can receive the field arrangement information transmitted by the host server, by the 2G/3G network, and alarm and remind line inspection personnel to conduct an arrangement check; after completing the inspection task, the line inspection personnel can send inquiry information via the hand-held terminal device to inquire of the instrument operator about the line inspection condition. The present invention reduces the difficulty of checking an arrangement at the time of the seismic exploration and production, shortens the required time for checking an arrangement and plays an important role in improving a production efficiency of seismic exploration.


Patent
China National Petroleum Corporation | Date: 2015-11-10

An apparatus includes a sub with recesses along an exterior wall to receive inserts, an antenna case including a coil surrounded by a sacrificial wear portion of a material through which signals between the coil and a formation of interest may pass. An eroded outer wall of the sacrificial wear portion is restorable by application of an uncured restorative material to the antenna case. A method includes securing an antenna case having a coil there within onto a sub, surrounding the coil with a metal sleeve shield, and radially receiving and securing a multi-piece sacrificial wear member intermediate the antenna case and a retainer ring having a threaded bore. The multi-piece sacrificial wear member is replaceable after use by unthreading the retainer ring to release the sacrificial wear member for radial removal from the sub.

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