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• The first trial of ultra-low density cement slurry in Bohai Drilling was successful 2024-11-13

      On November 8th, it was learned from Bohai Drilling Company that the company's self-developed 1.25 gram per cubic meter ultra-low density cement slurry system was successfully tested for the first time in the Ning72-81X well of the "ballast stone" project in Huabei Oilfield, and the cement slurry returned to the surface. According to electrical testing interpretation, the cementing quality is qualified, breaking the record for the lowest cement slurry density in Huabei Oilfield cementing.     The Ning 72-81X well is a development well deployed in the Suning block of Huabei Oilfield, with a total drilling depth of 3899 meters. Due to the weak pressure bearing capacity of the formation in this well, drilling fluid with a density of 1.25 to 1.26 grams per cubic meter is required to complete the drilling. In order to ensure that the cementing slurry can be sealed for more than 3000 meters at once and returned to the surface, Bohai Drilling actively organized technical experts to carry out cementing technology discussions, and determined to adopt a technical solution that the density of the cement slurry in the upper wellbore section is not higher than the density of the actual drilling fluid. While ensuring pressure stability, the maximum reduction of liquid column pressure is achieved, laying the foundation for this cementing construction. During the construction period, the on-site construction personnel of Bohai Drilling strictly controlled the construction details and successfully completed various cementing construction indicators. This marks the successful testing of the company's self-developed ultra-low density cement slurry system, providing a new solution for cementing long sealing sections in easily lost formations in various markets in the future.

• Great Wall Drilling breaks the record for one drilling of deep coalbed methane horizontal wells in China 2024-10-15

    On October 12th, the reporter learned from Great Wall Drilling Company that the coal seam gas company Jishen 6-3 platform 01 well, which was drilled by the company's drilling company, has been successfully completed, 12 days ahead of the design cycle, and the coal seam drilling encounter rate has reached 100%. The well has been drilled to a depth of 4550 meters and a length of 2140 meters per trip, breaking the record for the longest drilling depth of a deep coalbed methane horizontal well in China and marking a new breakthrough in the exploration and development of deep coalbed methane by PetroChina.     The Jishen 6-3 platform is the first deep coalbed methane platform deployed by a coalbed methane company with a horizontal section length exceeding 2000 meters. Since the launch of the platform, Great Wall Drilling has deepened the integration of Party A and Party B, integrated geological engineering and other efficient operation mechanisms, repeatedly demonstrated construction plans and polished technologies, iteratively upgraded trajectory control, wellbore stability and other processes, innovatively applied wellbore cleaning technology and near drill bit geological guidance system, and used real drilling natural gamma curves for real-time analysis of lithology changes. Fine tuning the performance of drilling fluid to enhance its sealing and anti collapse capabilities effectively addresses challenges such as larger off target distances and higher construction difficulties, extending the length of one drilling trip from 2097 meters to 2140 meters. Vigorously promote the use of highly aggressive drill bits, high torque long-life screws, hydraulic oscillators and other acceleration tools to lay the foundation for safe, high-quality and fast drilling, and promote further acceleration and efficiency improvement of deep coalbed methane horizontal wells

• Development and on-site testing of a probe type intelligent drill bit parameter measurement device 2024-09-07

  The existing measuring devices upstream of the screw cannot obtain real data at the position of the drill bit, and intelligent drilling has serious data bias and unpredictable implementation risks at the decision-making and control level. For this purpose, a probe type intelligent drill bit parameter measurement device (see Figure 1) has been developed, which can be installed inside the drill bit to directly collect real data at the drill bit without changing the existing drilling tool combination and construction process; The hardware structure simulation optimization results show that under a displacement of 30L/s and an annular pressure of 80MPa, the theoretical hydraulic pressure consumption is less than 0.1MPa and the safety factor is 3.06. Meanwhile, based on the six sided method and ARMA+mobile Kalman filtering, the error calibration and noise reduction of the device were achieved. The device was tested 9 times on site in the Shengli work area, and the downhole engineering parameter measurement short section was used for device function verification and comparison with downhole data. The comprehensive logging data was integrated for the acceleration analysis and parameter optimization decision-making of the test well. The experimental results show that the probe type intelligent drill bit parameter measurement device can obtain real data at the drill bit position, which can provide reliable basis for targeted acceleration and efficiency analysis and drilling parameter optimization. The article "Development and Field Testing of Intelligent Drill Bit Parameter Measurement Device with Probe Tube" (Author: Huang Zhe) has been published in the 4th issue of "Petroleum Drilling Technology" in 2024

• Bohai Drilling: "One trip drilling" and "starting" to improve both quality and efficiency 2024-08-02

  Bohai Drilling Company is closely focused on accelerating the construction of a world-class international oil service enterprise, and regards the vigorous promotion of the "one trip drilling" project as an important lever for speeding up and improving efficiency. It continuously improves the combination of "one trip drilling" characteristic technologies and construction plans for different regions, formations, and well sections, and summarizes and promotes the best operational practices of "one trip drilling". In the first half of this year, Bohai Drilling completed 232 drilling operations at depths of over 2000 meters in various markets, accounting for 42.34% of the total.   Fine Production Organization   Steadily advancing the 'one trip drill'   One trip drilling "refers to a drill bit that completes one opening or section of the well in one go, achieving the goal of shortening the construction period and improving quality and efficiency. Implementing 'one trip drilling' is a systematic project that requires not only advanced and efficient technology, but also collaboration among teams. In response to this, Bohai Drilling Company has started with top-level design, forming a top-down linkage and joint management mechanism with leaders taking the lead, production and technology departments leading, administrative logistics support, and frontline teams implementing. Together, they have formulated a "one trip drilling" implementation plan and steadily promoted the implementation of the "one trip drilling" results.   For wells that can implement the "one trip drilling" project, Bohai Drilling follows the "four requirements" model, which includes "detailed preparation of each process, reasonable work steps, advanced material planning, and meeting work quality standards". It deepens the lean drilling production organization, refines the opening connection from

• The 2024 China Oil and Gas Exploration and Development Wellbore Academic and Technical Conference will be held in Daqing in August 2024-07-07

  In order to fully showcase and share the technological progress and breakthroughs in data collection, processing, interpretation and evaluation, equipment research and development, rock physics experiments and numerical simulation, big data and artificial intelligence in wellbore technology applications, and promote the progress of oil and gas exploration and development wellbore technology, the China Petroleum and Chemical Automation Application Society will organize the "2024 China Oil and Gas Exploration and Development Wellbore Academic and Technical Conference" in Daqing City, Heilongjiang Province from August 24th to 27th. As a supporting media for the conference, "Oil Drilling Technology" will participate in this conference

• Heavyweight! The 2024 China Petroleum and Petrochemical Equipment Management Technology Exchange Conference and Petroleum and Petrochemical Equipment Management Expert Seminar will be held in Hangzhou from July 23rd to 25th 2024-06-18

  In order to fully implement the new development concept and the Action Plan for Promoting Large scale Equipment Renewal and Consumer Goods Exchange, promote the process of equipment renewal and transformation in the petroleum and petrochemical industry, accelerate the construction of a new development pattern, effectively promote the development of new quality productivity, and work hard to promote high-quality innovation and efficiency through refined management of petroleum and petrochemical equipment, the Petroleum Technology Equipment Professional Committee of the China Petroleum Society, the Petroleum and Petrochemical Technology and Digital Innovation Professional Committee of the China Equipment Management Association, and the Petroleum and Petrochemical Equipment Development Center of the China Equipment Management Association will hold the "2024 China Petroleum and Petrochemical Equipment Management Technology Exchange Conference and Petroleum and Petrochemical Equipment Management Expert Seminar" in Hangzhou from July 23 to 25, 2024. This conference will invite academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering, leaders and experts from units such as PetroChina, Sinopec, CNOOC, National Pipeline Network, National Energy, China National Chemical Corporation, and Yanchang Petroleum, as well as well-known experts and scholars from domestic and foreign universities and research institutions, to attend. The conference will focus on in-depth exchanges on key topics such as promoting lean equipment management, health management, digital management, large-scale updates and upgrades, and green and low-carbon operation and maintenance under the new situation. The conference is now soliciting conference papers from relevant uni

• 2024 OTC, we are coming! 2024-04-29

  Henan Dongfanglong is about to depart for the OTC exhibition in the United States 2024 OTC would be open in Houston in USA from May 3-6. The Offshore Technology Conference (OTC) is where energy professionals meet to exchange ideas and opinions to advance scientific and technical knowledge for offshore resources and environmental matters. Since 1969, OTC's flagship conference is held annually at NRG Park (formerly Reliant Park) in Houston. OTC has expanded technically and globally with OTC Brasil and OTC Asia. OTC is supported by 15 industry organizations and societies, who work cooperatively to develop the technical program. OTC also has endorsing and supporting organizations. It`s the 11th time for Dongfanglong to attend this big show. Dongfanglong would bring its good quality products and service to the spot. Welcome to our brand and meet with us.

• The Origin of New Year's Day 2024-01-02

  The origin of New Year's Day can be traced back to Zhuanxu, one of the three prehistoric emperors and five emperors. According to legend, Zhuanxu "took the first month of Mengxia as the yuan", which means that the first day of the first lunar month every year must be "New Year's Day" or "Yuanzheng". This legend has a history of more than 5000 years. Subsequently, different dynasties had varying opinions on the specific date of New Year's Day. The Yin Shang Dynasty established the first day of the twelfth lunar month as New Year's Day, the Zhou Dynasty designated the first day of the eleventh lunar month as New Year's Day, and the Qin Dynasty established the first day of the tenth lunar month as New Year's Day. In the first year of the Taichu reign of Emperor Wu of Han (104 BC), the famous historian Sima Qian pioneered the "Taichu calendar", which takes the first day of the first lunar month as New Year's Day. This method returns to the original provisions of the "Xia Xiaozheng" (the earliest surviving calendar in China that records agriculture), and is therefore also known as the "Xia calendar". This regulation spans a long historical time and space and continued until the Xinhai Revolution. Sun Yat sen designated January 1st of the Gregorian calendar as New Year's Day for the first time In 1912, the Provisional Government of the Republic of China was established. Mr. Sun Yat sen established the first day of the first lunar month as the Spring Festival, and the first day of the first lunar month in the Gregorian calendar (Gregorian calendar) as the New Year's Day, also known as the New Year, in order to follow the lunar calendar. In this sense, New Year's Day is a product and symbol of the evolution of modern and contemporary society in China. In September 1949, the first plenary session of the Chinese People's Political Consultative Conference, which was held on the eve of the founding of the People's Republic of China, passed a

• Xinjiang Oilfield strives to write a "warm answer sheet" 2023-11-27

  As of November 23rd, the largest natural gas storage facility in China, the Hutubi Gas Storage Facility in Xinjiang Oilfield, has been supplying natural gas to the West East Gas Pipeline and cities along the northern Xinjiang region for two consecutive weeks, ensuring stable supply of natural gas to residents and businesses along the route. Recently, there have been frequent rainy and snowy weather in Xinjiang, with temperatures continuing to decrease. Xinjiang Oilfield is guided by the principle of "ensuring people's livelihoods, public utilities, and key areas", scientifically organizing the integrated operation of natural gas supply and demand, and continuously increasing the operation of various links in natural gas production, transportation, and storage. From the vast Gobi to the hinterland of the desert, various units have entered the winter supply guarantee mode in a "full grid" state, fully ensuring the safe and stable supply of natural gas in winter. The Hutubi gas storage facility in Xinjiang Oilfield is currently the largest in service storage capacity and the strongest in peak shaving capacity in China, with a capacity of billions of cubic meters. Since its completion and operation in June 2013, it has exceeded the injection and production targets for 10 consecutive years, playing an important role in ensuring natural gas supply and seasonal peak shaving in Xinjiang and cities along the West East Gas Pipeline Network. Since the beginning of this year, the Hutubi gas storage facility has combined previous winter supply experiences, pre evaluated the gas demand for this winter and next spring, scientifically formulated winter gas

• Tarim Oilfield solar power output tops 105 mln kWh 2023-10-28

  URUMQI -- The photovoltaic power project in the Tarim Oilfield has generated over 105 million kWh of green electricity so far this year, said its operator, China National Petroleum Corporation, on Saturday. The green energy is equivalent to 22,200 tons of standard oil, reducing carbon dioxide emissions by 70,500 tons, and the electricity that can be used by more than 40,000 households for one year, which has effectively guaranteed the soaring power demand in southern Xinjiang. Of the green electricity generated, nearly 20 percent was consumed within the oilfield to reduce the load of the grid, the company added. Located in Northwest China's Xinjiang Uygur autonomous region, Tarim Basin is a major petroliferous basin in China. The company has discovered and developed 32 large and medium-sized oil and gas fields -- with the total output exceeding 470 million tonnes over the past 30-plus years. Taking advantage of the region's rich solar energy resources, the company has been increasing its pace in the construction of photovoltaic power stations in recent years. A new 500,000 kW photovoltaic power station in Yecheng county is expected to be connected to the grid this year.

• Happy Mid-autumn Festival 2023-09-27

• API 5CT TUBING COUPLING 2023-09-05

  Label 1 Size a Outside Diameter Minimum Length

• TYPES OF OCTG 2023-08-07

  The three main types of Oil Country Tubular Goods are drill pipe, casing, and tubing. Drill pipe: Drill pipe is heavy, seamless pipe which provides rotation for circulating the drilling fluid. The pipe helps the drilling fluid to be pumped back up the annulus. The annulus of an oil well is the space between the casing and the piping or any immediate space between any casing and tubing surrounding it. The annulus helps in the easy circulation of the fluid in the well. The pipe is subject to axial tension, as high torque is required for rotating the down-hole assembly and drilling the fluid and circulating it. All this creates a large amount of stress on the drill pipe, hence the OCTG pipe should be extremely strong. This drill pipe is used only at the drilling rigs and they are available in different sizes and different qualities. The quality differs based on the grade of strength, weight, and length of the pipe. The OCTG Drill Pipe is sturdy steel pipe which is required to meet the standards of API 5DP and API SPEC 7-1. Casing:

• Coupling,Tubing and casing pup joints and Crossover 2023-07-01

  Coupling Tubing and casing couplings are the joining of two short length pipe, mainly used for the connection and repair of oil pipe and downhole tools Tubing and couplings thread types : Non-upset thread(NU), External- upset thread(EU); Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC) Grade: K55,J55,N80-1,N80Q,L80-1,P110,etc. Pup joint Tubing and casing pup joints are machined according to the latest version of API SPEC 5CT. The steel grade includes J55,K55,N80-1,N80Q,L80-1,P110,etc. There are two types of thread widely used in tubing pup joint namely Non-upset thread(NU), External- upset thread(EU); Casing and couplings thread types: Long-round thread(LC), Short-round thread(SC), buttress thread(BC). Our testing and inspection method system is complete, using a whole set of thread instrument to inspect taper, pitch, tooth, height, tooth type,etc. The products have passed the identification of china petroleum pipeline. Quality supervision ,inspection and testing center and gained the unanimous praise from the customers. Crossover Crossover coupling any size ,length ,grade and weight is available on customer request.

• Boil your steak, keep US forces at bay 2023-06-29

  US troops stationed in Syria looted hundreds of metric tons of crude oil in Iraq on Sunday. This was the third time they did so this year. Earlier, the troops had mobilized 73 oil tankers on April 9 and 23 tankers on April 3 to transport their ill-gotten gains. In 2022, the Syrian government said US troops pillaged 66,000 barrels of oil every day, which is about 83 percent of Syria's total oil production. It is anybody's guess why the US went into Iraq, Libya or anywhere in the Middle East and North Africa. That it is openly stealing oil from Syria, however, takes the cake. Since the civil war broke out in Syria in 2011, the US and its allies have been actively intervening to pull down the government there. US warplanes have been bombing Syrian government forces, supplying arms and ammunition to the opposition forces, and pouring scorn at Syrian diplomats in international forums. Even though the civilian strife has largely stabilized, the Syrian government has lost control of many places in the country. The Kurdish forces, and the Islamic State that emerged later, still control places in Syria. This disintegration of Syria gave the US a chance to take advantage of the situation. When it takes oil, it claims it is from oilfields controlled by the opposition forces; but it even takes oil from Syrian territory and claims it is to help the Kurdish forces.

• Oil giants rally on reform expectations 2023-06-01

  China's State-owned oil majors rallied on Monday as expectations over accelerated reform of State-owned enterprises grew after regulators vowed new measures to bolster the competitiveness of SOEs. On Monday, PetroChina Co Ltd, the listed arm of State-owned energy giant China National Petroleum Corp, jumped 7.17 percent - the biggest gain in about three weeks - to close at 7.62 yuan ($1.08) per share after falling by more than 17 percent from its recent high in early May. The other two State-owned oil majors - China Petroleum & Chemical Corp and CNOOC Ltd - rose 5.34 percent and 2.06 percent on Monday, respectively. The rally among energy heavyweights underpinned a 0.28 percent gain for the Shanghai Composite Index on Monday, which closed at 3221.45 points, whereas other benchmark indexes tracking A shares dropped. Experts said the gains by oil majors may be a sign that investor sentiment of "the valuation system with Chinese characteristics" - which suggests that the valuation of SOEs has the scope to improve - has strengthened following regulators' latest commitments to boost the development of listed SOEs. Wang Jianjun, vice-chairman of the China Securities Regulatory Commission, said over the weekend that the top securities regulator will work with other authorities

• 2023 OTC in the United States 2023-05-04

• 2023 OTC Exhibition in the United States 2023-04-15

• Model of Honesty and Credibility The 7th Puyang City Moral Model | Bie Xinyun: Sincere to the World, Faithful to the World 2023-03-28

  Before starting their own businesses, Bie Xinyun and her husband Du Wenhua were both employees of Zhongyuan Oilfield. In the eyes of ordinary families, these days were comfortable enough, but they had higher life goals. In 1999, Bie Xinyun and his wife went out of state-owned enterprises to operate overseas, raised funds to purchase advanced equipment, recruited professional and technical personnel, and established Puyang Dongfanglong Machinery Co., Ltd. With excellent product quality and good market reputation, in just a few years, cooperative customers have spread across major oil fields such as Zhongyuan, Dagang, Jidong, Xinjiang, Shaanxi, etc. In 2012, with an investment of 120 million yuan, the company took the lead in settling in Pudong Industrial Cluster in Puyang City. It only took two years, and its products were exported to more than 30 countries and regions such as the United States, South Korea, Russia, and Venezuela. Bie Xinyun said, "Great credit leads to great development, while small credit leads to small development. Without credit, it is difficult to develop. What our enterprise can develop to today is this honesty and trustworthiness, which can be said to be the lifeline of our enterprise." In February 2012, Dongfanglong Machinery Manufacturing Company responded to the government's call to relocate the Pudong Industrial Cluster, which has greatly affected production. It is difficult to carry out a large amount of production in a short time, and some orders cannot be delivered on time. However, Biexinyun still decided to deliver the products on time. While working hard to complete the installation and commissioning of the equipment after the relocation, she contacted surrounding enterprises to assist in production. Zhu Ximei, General Manager of Henan Central Engine Baolong Pipe Industry Co., Ltd.: Sister Xinyun is a very trustworthy person. Over the years, our products have never been rushed, and

• OCTG Casing and Tubing Pipe 2023-01-28

  OCTG Casing Pipe The shape of the casing section is round, in large diameter pipes and is inserted into the oil well, fixed with cement to protect other equipment that is mostly made of iron and steel. The oil well must be designed to withstand the force different from the external power, such as crushing, explosion, stress and chemical corruption. API 5CT casing pipe is used to support the oil and gas pipe wall, and to ensure the drilling process and the post-completion wells normal operation. Each well depending on the depth of drilling and geological conditions, to use several layers of casing. After cementing casing to be used to go down, it different from tubing, drill pipe and can not be reused, a one-time consumable materials. Therefore, the casing consumption accounts for over 70% of all the oil well pipe. According by usage can be divided into the sleeve pipe, surface casing, casing and production casing. OCTG Tubing Pipe OCTG Tubing pipe goes inside the casing pipe because it is the pipe through which oil makes its way out. Tubing is the simplest part of OCTG and it is normally found in the segment of 30 ft (9 m), with threaded connection at both ends. The pipe is either used to transport natural gas or crude oil from the producing formation to the facilities where it will be processed after drilling is complete. Tubing (pumping pipe) goes inside the casing because it is the pipe through which oil makes its way out. Pipe of production is the simple part of OCTG and it is normally found in the segment of 30 ft (9 m), with threaded connection at both ends. The pipe is either used to transport natural gas or crude oil from the producing formation to the facilities where it will be processed after drilling is complete.

• Happy New Year from Eastlong 2023-01-18

  May your year of the Rabbit be full of happiness and health! Happy New Year to all our friends and customers!! NEW YEAR NEW HOPE!!

• OCTG - Pup Joint 2022-12-30

  A pup joint is Casing, Pipe or Tubing shorter in length than a standard tubular string. This allows for the adjustment and installation of tools and various tubular components when placement downhole is critical for a specific project. A Spacer Pipe is another reference used to identify pup joints. Pup joint features consist of connections, lengths, weights and material grade. Crossover pup joints are manufactured from seamless mechanical tube. As with all Crossover products, each piece is marked with a distinctive job number and heat number that is fully traceable. A complete range of sizes (1" to 4.5"), weights (standard or heavy wall), and grades (J-55, N-80, L-80, and P-110) are commonly available from stock in 2', 3', 4', 6', 10', and 12' lengths. Lengths up to 20' are available upon request. API Tubing Pup Joints Manufactured according to API Spec 5CT using prime API monogrammed, seamless oil country tubing. Optional diameters, lengths, weights, and grades are available upon request. Diameters: .75" through 4.5" nominal O.D. Weights: Standard or Heavy Wall Lengths: 2, 3, 4, 6, 8, 10, 12 ft. Standard (Lengths up to 20' available upon request) Grades: J-55, N-80, N-80 Q & T, L-80, P-110, 13-CR and other premium grades

• In Shanxi, coal-bed methane gets a boost 2022-11-28

  In Shanxi, coal-bed methane gets a boost With a new well to extract coal-bed methane in Jincheng, Shanxi province, on Saturday, daily gas production of Petro China Huabei Oilfield Co in the Qinshui Basin exceeded for 5.5 million cubic meters for the first time, according to China National Petroleum Corp. The company has developed the country's largest coal-bed methane field, with an annual output of 2 billion cubic meters. Coal-bed methane is a unique clean energy resource. Development of the industry can help relieve shortages of oil and gas in China while protecting the local environment, the company said. Shanxi's proven reserve of coal-bed methane is 8.31 trillion cubic meters, one-third of the nation's total. Covering an area of more than 3,000 square kilometers, the Qinshui coal-bed methane field in southeastern Shanxi is estimated to have 600 billion cubic meters methane. "In recent years, a series of high-energy horizontal well technologies have been applied in the Huabei Oilfield," said Hu Qiujia, the manager of Shanxi Coal-Bed Methane Co. "So far, a total of 4,600 wells have been drilled and the output co

• Digital transformation fuels energy industry 2022-10-15

  Wider use of technologies benefits daily operations Shi Wenbin, a 57-year-old oil worker, knows only too well how bitingly cold it can be in Daqing, Heilongjiang province, in winter, when temperatures often plummet to -30 C. Describing a winter patrol of a 3-square-kilometer operational area at a local oilfield, he said: "Amid the freezing cold, I and at least 14 colleagues had to inspect oil wells scattered throughout the patrol area every morning and afternoon. Each time, it took us four hours and we walked more than 10 kilometers a day." Shi, captain of an oil production team at Daqing Oilfield Co, a subsidiary of China National Petroleum Corp, and his team have worked in one of the nation's largest oilfields for years, regardless of weather conditions that include snow, rain and extremely high wind speeds. But now they have an efficient helping hand, thanks to the pioneering use of digital technologies such as drones, 5G, the internet of things, big data and video surveillance in and around the oilfield. "Drones now patrol the operational area four times a day, and we only arrange for about six people to do additional inspection work every three days. The technology has greatly reduced our workload and the risk of injury," Shi said