Notable achievements were gained in the R&D and application of "Sinopec Matrix Navigation" rotary steering system.  We fostered breakthroughs in 9 core technologies as high build-up rate, high reliability, and precise trajectory control under static thrust mode, with a domestic content rate of 94.5%. The technologies were applied in 118 wells, with a footage of 169,100 meters and a cumulative footage of nearly 200,000 meters. For the first time, our technologies were fully applied in domestic shale oil and gas reservoirs, offshore and shallow sea oil and gas fields, and complex structured wells, facilitating the construction of the Shengli Jiyang shale oil national demonstration zone and the exploration of Sichuan and Chongqing shale gas. As a high-end drilling technology equipment, the system was selected as one of the "2023 Top Ten Iconic E&P Achievements of China's National Oil and Gas Industry" by the National Energy Administration.

Breakthroughs were scored in high-density seismic acquisition technology in shallow waters.   We have developed four key technologies and processes, including the efficient stimulation of OBN, node deployment, comprehensive navigation, and OBN data processing. There were also progress in raising the production speed and efficiency, node automation deployment operations, multi-source ship collaborative construction, and rapid synthesis of OBN data, covering all terrains of domestic onshore and offshore oil and gas exploration areas, and driving Sinopec's shallow sea geophysical exploration towards higher density with more data collection.

Matching technologies for deep well drilling became more mature.  Overcoming tough difficulties, we formed ultra-deep well speed raising technologies such as abnormal high pressure safe drilling+ultra-high temperature directional drilling in Shunbei block, coordinated collapse and deviation prevention and fast drilling of "enhanced plugging+chemical inhibition" technology, fine pressure control in Sichuan and Chongqing blocks, "foam+air screw" deviation prevention and fast drilling, integrating software with hardware as in "geological modeling+-customized bit design+real-time drilling parameter fine optimization", and efficient leak plugging. We finished drilling 277 ultra-deep wells, with an average depth of 6,731.63 meters, an average mechanical drilling speed of 9.31 meters/hour and an average drilling cycle of 97.92 days, well improving the speed and efficiency. The drilling depth of the Yuejin 3-3XC well was 9,432 meters, renewing the record for horizontal wells in Asia. The drilling cycle of Shunbei 6-4X well was 97 days, bringing the cycle of drilling wells deeper than 8,000 meters within 100 days for the first time.

The upgrading of matching technologies for shale oil and gas engineering picked up pace.  We generated the package of shale gas drilling technologies as "optimal and fast drilling and completion for slim-hole well, cementing for wells with small annular space, water-based drilling fluid system", low-density anti-collapse oil-based drilling fluid, foam cementing, and shale oil technologies like multi-barrel continuous coring, and fine pressure control in the whole drilling and completion process, effectively ensuring the increase of shale gas reserves and production in Sichuan and Chongqing projects and Shengli project. We finished 216 shale gas drilling, with a drilling footage of 1.2772 million meters, an average depth of 5,439.5 meters, a mechanical drilling speed of 8.86 meters/hour, and a drilling cycle of 74.97 days. In the National Demonstration Area of Shale Oil in Jiyang, Shengli Oilfield, we completed drilling of 55 wells, with an average well depth of 5,797.6 meters, a mechanical drilling speed of 12.93 meters/hour, and a drilling cycle of 67.67 days, significantly raising the quality and efficiency of our operation. The Fengye 1-Xie 2 well set a record for Sinopec's longest single core length, while the Shengye 4-3HF well set a record for the shortest drilling cycle of the deep shale gas development for Sinopec.

Downhole operation and the reservoir services were strengthened.  We proactively fostered high-end technology for downhole operations, improved the fracturing construction efficiency by 13.1% in key projects of the Northwest, North China, Northeast, Sichuan, and Chongqing. The world's first set of 175 MPa ultra-high pressure testing and fracturing equipment was applied in Qiye Shen-1 well. Fu1 well set the record for the highest test temperature (221℃) in ultra deep wells in Asia. The Niuye 1 experimental wells in the National Demonstration Area of Shale Oil in Jiyang, Shengli Oilfield, adopted a single platform with "dual fracturing units" for the first time, creating a new domestic record for fracturing with electric drive in 11 shale oil sections in single day. The fracturing test of Yangmei 1 well achieved a daily gas output of 104,000 cubic meters, facilitating the Daniudi coal-bed gas field to be a new hub of 100 billion cubic meters. Positive progress was made in the development of difficult-to-utilize reserves in areas as the Shengli mature oilfields and western Sichuan. The Shengli mature oilfields upgraded cooperation model and increased rapidly in reserves and output. Through cooperative development, the Xinchang Hexingchang Xuer gas reservoir in western Sichuan discovered ultra deep integrated gas fields of 100 billion cubic meters.

New headway was scored in drilling fluid technologies.   We formed the high-temperature drilling fluid technology for deep and ultra-deep wells in our projects located in Southwest China to ensure the smooth construction of Well Fu 1 at a temperature as high as 221℃. The synthetic drilling fluid technology was applied in 72 wells in the Shale Oil National Demonstration Area, Shengli Oilfield, further securing its stability and adaptability. LDR-502, a synthetic resin fluid loss reducer, was applied in 5 deep and ultra-deep wells with temperatures over 150℃. The fourth section of Shunzhong 1X well was drilled at a depth of 9,316.27 meters, with a drilling fluid density of 1.90 grams/cm³ and a bottom hole temperature of 201℃. During the electrical testing period, the static time of the drilling fluid exceeded 120 hours, and both tests were successful, effectively meeting the requirements for high-temperature stability of the drilling fluid during long-term static testing in deep wells.

More breakthroughs were made in logging and mud logging technologies.   In measurement while drilling, the azimuth resistivity and azimuth gamma series were applied on a large scale, with a cumulative on-site application in 55 wells. The reservoir drilling rate reached 98%, lasting for 1,069 hours without faults in the ultra deep and ultra-high pressure wells of Yongjin 3-Ping 16, scoring new breakthrough in instrument stability. The on-site tests for neutron density and high-speed data transmission system while drilling were completed, largely improving the accuracy of measurement. Regarding open hole logging, the temperature and pressure resistance of imaging logging continued to improve. The 200℃/172 MPa electrical imaging logging technology was successfully applied in four wells in Northwest and Southwest China, with data 100% eligible. The 200℃/206 MPa direct push storage logging instrument was applied in 574 wells with a one-time success rate of 98.6%. About logging techniques, the temperature and pressure indicators of the thrubit storage logging were improved to 175℃/140 MPa, with a cumulative application in nearly 100 wells and a success rate of 98%, becoming the designated technology for the National Demonstration Area of Shale Oil in Jiyang, Shengli Oilfield. The "Tractor+" platform extended 24 applications in 3 categories, with an annual operation of 657 wells and a traction distance of 999,400 meters, setting multiple domestic records. On well logging interpretation, the "triple testing" technology of HTHP nuclear magnetic resonance+pyrolysis+displacement and the comprehensive evaluation technology of complex reservoirs were formed. The interpretation accuracy of complex reservoirs reached 93.6%, and more than 80 wells have been applied in Jiyang, northern Jiangsu and other areas, with an interpretation accuracy of 98.1%. As for logging technology and equipment, we realized large-scale applications of carbon isotope analysis technology and laser scanning confocal logging technology, with an accuracy of 90% for geological dessert evaluation. The integrated decision-making and command center of the well site was applied more than 20 wells, using "1 decision-making instrument+4 acquisition instruments" to simultaneously carry out logging of 4 wells in the experimental wells of Niuye 1 area, effectively raising speed and efficiency. The automated rock debris extraction and washing technology was applied in 23 wells, verifying the reliability on site.

Ground engineering technology has significantly improved.  All our self-developed continuous sulfur melting processes and devices realized domestic production, breaking down the technical barriers of foreign companies. The standardized design of oil and gas fields, gas storage facilities, and long-distance pipelines has been upgraded to version 3.0. New technologies such as self-developed tungsten inert gas arc automatic welding and PST welding for long-distance pipelines were applied to the construction of the West East Gas Pipeline Section 4, setting a new record for welding of 1,219mm diameter pipelines in China per day (welding 75 intersections per unit per day). The construction of digital base for petroleum, petrochemical, oil and gas field surface engineering won the first prize in the SOE Digital Scene Innovation Competition of SASAC. The first million-ton and 100 kilometer supercritical CO₂ transmission pipeline in China was completed and put into operation.

IT/IS construction continued to improve.  We dovetailed the integrated cloud platform for petroleum engineering (SICP system) with the domestic upstream petroleum engineering business control platform (IPPE system) and various applications in the oilfield, and realized comprehensive sharing of on-site data input and the cloud edge collaborative mode of "on-site data collection and analysis+remote operation command and decision-making", greatly enhancing efficiency. We continuously carried out the integration and optimization of digital seismic progress data, and accelerated the GIS visualization display of production progress. Based on project profit and loss analysis, SICP platform established a real-time display platform covering production, operation, performance, finance and other data in key domestic and international markets, helping to improve the quality and upgrading of refined management for professional projects such as wellbore, geophysical exploration, and engineering construction.

Upgrading in the key petroleum engineering equipment expedited.  We invested 3.47 billion yuan, improved and renovated 21 drilling rigs with 10 for wells deeper than 7,000 meters and 11 for wells deeper than 5,000 meters, and upgraded other 54 sets of professional and key equipment. The equipping of electric drilling rigs increased to 63%, that of electric drive devices for drilling rigs increased to 48%, and we owned 185 modern and reinforced drilling rigs. The equipment structure was further optimized, greatly enhancing the equipment support capacity.

New breakthroughs were boosted in the key technologies of oil and gas and new energy equipment.  Deep earth drilling bits and tools, known as the "meritorious products" digging as deep as 10,000 meters, helped the "Deep Earth" projects to crack a series of new operation records in China and in Asia. The performance of the drilling and completion tools, and the fracturing equipment was further improved, and the new generation of hybrid drilling bits, high temperature resistant PDM drills, HTHP blowout preventors have become the benchmark of the oilfield service industry. We developed the world's first 10,000 meter well repair rig, filling the domestic technological gap. The world's largest single machine power 8000 electric fracturing equipment with continuous full load and the first domestic 90 MPa liquid driven hydrogen compressor were developed. The 2500 type fully electric one key cementing equipment and the world's strongest 175 MPa large diameter fracturing manifold with pressure capacity were put into use, and 225 tonnes of pressurized operation equipment set a domestic construction record. The 5000 electric fracturing equipment with continuous full load created the records as the world's largest fracturing and doubling the dual unit synchronous fracturing efficiency, contributing to the breakthroughs in shale oil output of Shengli oilfield. The 200,000-cubic-meter high sulphur natural gas compressor facilitated the sustainable increase in the gas recovery of Puguang gas field. We also undertook the task of self-developing the matching equipment for the fracturing ship, realized the commercial sales of underwater wellhead in offshore blocks, and advanced the "unblocking" of high-end marine engineering equipment.