On January 23, the author learned that the Jilantai Oilfield of the Bayan Branch of Huabei Oilfield has continuously deepened the efficient development management model of old oilfields, constantly optimized the technical system and management mechanism, and all key development indicators are at the leading level in the industry. In 2025, the Jilantai Oilfield was awarded the title of "Efficient Development Oilfield" in the oil and gas new energy sector of the Group Company. In 2025, facing multiple challenges such as complex geological conditions, limitations of conventional development technologies, and high difficulty in efficient development, the Jilantai Oilfield innovatively adopted the development methods of "metamorphic rock basement volume fracturing + bottom wat

On January 21st, the Wunan 3-2-13X well of the Tarim Oilfield was officially put into operation. This well successfully completed the lowering of the retrievable electric pump and achieved a qualified trial pumping within the middle of this month. It realized the application of the retrievable electric pump lifting technology at a depth of 2500 meters, providing a new technical approach for the Tarim Oilfield to cope with complex working conditions, significantly reducing maintenance and inspection costs, and improving efficiency. Electric pump lifting is an important artificial lifting method in oilfield crude oil production. As the oil and gas development in the Tarim Oilfield continues, electric pump wells generally face complex production environments such as asphalti

On January 5th, a reporter learned from the Oil and Gas Technology Research Institute of Jilin Oilfield that the Jilin Oilfield's intensive overall fracturing technology has focused on the capacity building of conventional oil, precisely exerting its technical support role, and achieving a new breakthrough in the capacity building of old oilfields. Up to now, the Jilin Oilfield has applied this technology to conduct fracturing operations on 448 wells in a year, with a success rate of 98%. The average daily oil production per well has increased by 21% compared to the design, and the project's conversion rate has reached 100%. The secondary development of the low-permeability old oilfields in Jilin Oilfield faces multiple challenges such as complex injection-production patt

On December 22, the author learned that the high-temperature heat pump system of the third thermal station, a key supporting project for the western transformation and upgrading of Jilin Petrochemical, was successfully put into operation. It supplies qualified heating and hot water for the 600,000-ton/year styrene and other facilities and factory buildings, marking a revolutionary change in the company's winter heating and heat tracing heat sources. High-temperature heat pumps are devices that transfer heat from low-temperature heat sources to high-temperature heat sources through the circulation of refrigerants driven by electricity. They have the advantages of high efficiency, energy conservation, environmental protection, low carbon emissions, strong adaptability, and

On December 14th, as the Qaidam Basin entered the severe cold season, the lowest temperature dropped to minus 15 degrees Celsius. The Qinghai Oilfield intensified its winter safety hazard inspection and governance. Through multi-dimensional approaches such as full participation in hazard inspection, professional supervision and verification, closed-loop rectification and elimination, and digital empowerment, a "safety protection net" was woven throughout the oilfield's oil and gas production areas. The Qinghai Oilfield closely focused on business areas such as crude oil production, natural gas supply guarantee, and engineering technical services. Guided by the requirements of the "Thunderbolt Action" for safe production and in combination with the winter safety risk preve

As of December 3rd, Daqing Oilfield, the world's largest research and production base for tertiary oil recovery, has achieved a tertiary oil recovery output of over 10 million tons in 2025, maintaining an output of over 10 million tons for 24 consecutive years, with a cumulative output of 330 million tons, reaching a new peak in production. Tertiary oil recovery involves injecting chemical substances into oil layers to improve the performance of oil, gas, water, and rock interactions, thereby extracting more crude oil from rock pores. After several generations of hard work, Daqing Oilfield has developed its tertiary oil recovery technology from scratch, from following to leading, and has maintained a world-leading position. It has become the dominant development technology

On November 28th, it was learned that the Da'an 1H28-4 well, located in the Linjiang syncline of the Da'an block in western Chongqing, was successfully drilled. With a single run of rotary steering achieving a total footage of 3,190 meters and a horizontal section of 2,575 meters, it not only set a new record for the longest horizontal section in the Da'an block but also established a new domestic record for the rotary steering single-run footage of deep shale gas horizontal wells. The 1H28-4 well, which reached a total depth of 6,915 meters, was drilled by the Daqing Drilling 70241 drilling team. Throughout the drilling process, the Exploration and Development Department of Zhejiang Oilfield fully played the leading role of the client, taking the "design, technology, too

On November 24th, the "laser rust removal + automatic anti-corrosion" integrated pipeline production line independently developed by Tiancheng Lide Company of Huabei Oilfield was successfully put into operation and has been running stably. This production line adopts a seamless design of "rust removal - anti-corrosion", and through process integration and intelligent upgrading, it achieves clean and efficient production, promoting the "1+1>2" efficiency upgrade of pipeline business. To overcome the problems of high environmental risks, low efficiency, and unstable quality, Tiancheng Lide Company of Huabei Oilfield conducted on-site investigations at oilfield pipeline construction sites, construction units, and anti-corrosion manufacturers, systematically analyzed the l

On November 12th, it was learned that a well at the shale oil fracturing site in the main oilfield area of Longdong in Changqing Oilfield successfully completed the carbon dioxide energy-enhanced fracturing operation and simultaneously achieved multiple integrated tests including casing external optical fiber monitoring, wellbore digital data collection, and dual-well microseismic monitoring under the high-temperature and high-pressure environment at a depth of 3,602 meters. Technical data shows that all indicators exceeded the design targets, and the implementation effect was significant. With this, the first domestic shale oil carbon dioxide energy-enhanced fracturing comprehensive monitoring test site has been officially established, marking an important breakthrough b

As temperatures in Northeast China continue to drop, the pressure to ensure a steady supply of low pour point diesel has been increasing. Liaoyang Petrochemical has closely followed market demand changes, adjusted resource allocation, and optimized production plans to significantly increase the output of low pour point diesel. As of now, the daily average output of -35 diesel at Liaoyang Petrochemical has reached 2,000 tons, effectively meeting market demands. Facing the winter market demand, Liaoyang Petrochemical has ramped up production, making the increase of low pour point diesel a key focus of its current production organization. Through optimizing crude oil processing plans, finely adjusting operation parameters, and enhancing coordination among various facilities

On November 3rd, at the well maintenance site of Well West 17-9 in the Downhole Operations Company of Dagang Oilfield, employees completed the operation tasks that previously required the cooperation of two positions by controlling the newly developed automatic pipe pusher device. Traditional minor well maintenance is a labor-intensive industry. On-site employees have been dealing with "iron blocks" such as hydraulic tongs, slips, and oil pipes for years, with high labor intensity and safety risks. During the daily process of raising and lowering oil pipes, well maintenance workers need to lift and lower oil pipes weighing over 100 kilograms onto and off the wellhead operation platform, which is time-consuming, laborious, and poses risks of collision and damage. Based on

On October 28th, it was learned from Liaohe Oilfield that after the Shu 5 Combined Station of the oilfield adopted the new-generation low-temperature electric dehydration device, the water content of crude oil leaving the station was stably controlled within 0.3%, and the comprehensive cost per ton of liquid decreased by more than 20%. Dehydrating heavy oil has always been a difficult problem restricting the low-cost development of oilfields. The key and difficulty in achieving low-temperature dehydration lies in demulsification. The technical team of Liaohe Oilfield Design Institute deeply analyzed the physical and chemical properties of heavy oil emulsions, developed a multi-field coupling electric dehydration simulation experimental device, and systematically revealed

On October 22nd, at the Laoyema Joint Station of the Oil and Gas Gathering and Transportation Company of Jidong Oilfield, employees used a newly developed carbonization cleaning device for filter cores to clean the filter cores. The cleaning process was both convenient and environmentally friendly. In the oil and gas gathering and transportation production system, the filter cores, which are the core components of the filters, are prone to being clogged by impurities such as crude oil resins, congealed oil, sand, flocs, and dead branches and weeds during use. The traditional manual cleaning method is inefficient, labor-intensive, and accelerates the wear of the filter cores, leading to frequent replacements and high costs. Facing this challenge, technicians actively carr

In natural gas transmission and distribution systems, valves are the core components of fluid control, and their selection, installation, and maintenance directly affect the safety, continuity, and regulatory compliance of the system. Natural gas itself has characteristics such as flammability, explosiveness, and easy leakage, so it is necessary to strictly follow engineering specifications and safety standards during the use of valves, especially in long-distance pipelines, high-pressure conditions, and complex environments. This article systematically analyzes the selection principles, installation requirements, material adaptation, operation and maintenance, and safety control of valves in natural gas pipelines. 1、 Valve selection and structural design In natural gas transmis

On September 7th, the reporter learned from the Testing Technology Service Branch of Daqing Oilfield that its successfully developed wide area tracer logging technology has achieved a breakthrough in both accuracy and efficiency of reservoir water injection monitoring. This technology is the first of its kind in China and can effectively identify water absorbing layers with an injection depth of only 0.2 meters and a water injection volume of 0.3 cubic meters per day. The average efficiency of the test has been improved by 45%, and the average amount of isotope carrier used has been reduced by 83%, providing technical support for the fine development of oil fields. This technology innovatively develops the processes of "anti flocculation coating" and "surface active coating", wh