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Table of Content

    04 July 2024, Volume 11 Issue 2 Previous Issue   
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    The Application of the Concept of “Three Original and Three Present” under the “Broken Window Effect”
    YIN Xiaohui
    2024, 11 (2):  1-5. 
    Abstract ( 15 )   PDF (1239KB) ( 6 )  
    With the expansion of offshore oil and gas resources development, oil field management is becoming more and more important. Subject to the geographical location, platform area and Haven climate conditions, offshore field management is facing greater challenges. Offshore oil field equipment is often in service for a long time, gradually aging and difficult to replace, there is a “broken window effect” in management problems. In view of management difficulties, the management personnel of Caofeidian Oilfield innovatively put forward the concept of “three original and three present”, and carried out management improvement activities based on the concept of “three original and three present” to cope with the “broken window effect” in the field, and made efforts in four aspects of equipment and facilities, production and operation, personnel education and safety norms, thus consolidating the level of safety production management in the field. It has effectively improved the effect of safety culture construction in the operating company. The management promotion activities of Caofeidian oilfield provide a powerful reference means for other oil field companies to improve management ability and reduce management costs, and have good reference value.

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    Research on the Scheme of 3700 Square LPG Carrier
    YANG Xueli, XIA Huabo, WEI Xiaoqiang, ZHU Yongkai, QI Xiaoliang
    2024, 11 (2):  6-11. 
    Abstract ( 9 )   PDF (1997KB) ( 8 )  
    In order to meet the increasing LPG transportation volume requirements of offshore oil fields, by comparing and analyzing the LPG carrier market and industry equipment status, taking into account the economy and technical advancement, the technical scheme and main parameters of newly built 3700m^2 LPG transport ship were systematically demonstrated. The research method can provide reference for similar projects.

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    Review on Fuel Selection of LNG and Marine Methanol
    ZHOU Cheng, ZHOU Yi, LI Meng, SUN Bing, GU Yuxuan
    2024, 11 (2):  12-14. 
    Abstract ( 9 )   PDF (973KB) ( 11 )  
    In view of the high price of LNG and high production and transportation costs, in order to save labor costs and improve economic benefits, Marine methanol fuel is considered to replace LNG fuel. The advantages and limitations of the two fuels are described by comparing their carbon dioxide emissions, costs, management and storage, infrastructure construction, and future development difficulty.
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    Discussion on the Solution of Insulation Failure of Underwater Motor on Offshore Platform
    DENG Guanhua, ZHANG Guodong, YANG Qifu, YANG Sen, CEN Jianfeng
    2024, 11 (2):  15-19. 
    Abstract ( 7 )   PDF (2200KB) ( 8 )  
    Aiming at the problems of high insulation failure rate and unstable quality of domestic electric seawater lifting pump motor. By combining the actual cases and the simulation analysis of temperature field, it is concluded that the main reasons for the insulation failure of submerged water motor include the defect of winding wire selection, insufficient internal heat dissipation, poor sealing performance and lack of temperature monitoring. At the same time, according to the reason of appeal, the feasible improvement method is put forward in order to improve the product quality of electric submersible water pump.

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    Marine Operation Safety Analysis and Intelligent System Construction
    YIN Xiaohui, ZHANG Zongchao, QI Gaosheng, DUAN Guoxi, BI Yanbin
    2024, 11 (2):  20-23. 
    Abstract ( 19 )   PDF (2004KB) ( 5 )  
    The development and production of offshore oil have long been accompanied by high operational risks, and the quality of operational safety risk analysis has a direct impact on preventing production safety accidents. The purpose of this article is to introduce the construction practice of China National Offshore Oil Corporation's intelligent system for safety analysis of offshore oil fields, clarify the key points of digital and intelligent construction of oil field safety risk analysis from four aspects: business informatization, resource digitization, data standardization, and business intelligence, analyze the advantages of using intelligent management and analysis systems to improve the safety level of offshore operations, and provide reference for offshore oil field enterprises to explore the path of scientific and technological development.

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    Design Optimization of Waste Heat Recovery Unit for “Hai Yang Shi You 123” FPSO
    CHEN Qiming, HE Gaolin
    2024, 11 (2):  24-28. 
    Abstract ( 7 )   PDF (3344KB) ( 9 )  
    In order to make full use of the high temperature exhaust gas of the main generator and realize energy saving and emission reduction, the waste heat recovery unit has been designed in the basic design stage in “Hai Yang Shi You 123”FPSO(Floating Production Storage and Offloading), but the waste heat and the heating medium circulation system of the boiler are completely independent, and can not be mutually standby, and the four heating medium circulation pumps of the waste heat are not connected to the emergency bus, which will lead to the black start of the FPSO. It is easy to cause local high temperature coking and carbonization of heating medium in the furnace tube of waste heat recovery unit, which affects the operation of the system. In order to solve the problem effectively, the scheme of adding the circulating pump of waste heat system into the emergency bus bar is proposed creatively, which can effectively avoid the occurrence of heating medium coking in the waste heat system during black start.

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    Application Research of Intelligent Technology in Improving Production Stability and Efficiency on Offshore Oil Platforms
    WU Binfeng
    2024, 11 (2):  29-33. 
    Abstract ( 10 )   PDF (3661KB) ( 9 )  
    With the continuous development of technology, intelligent technology plays an increasingly crucial role in the operation of offshore oil platforms. This paper begins by introducing the concept and background of intelligent technology in offshore oil platform. Subsequently, it delves into the detailed exploration of the application of intelligent technology in enhancing production stability and efficiency, including predictive maintenance, production process optimization, intelligent monitoring, and datadriven decision support. Finally, the paper summarizes the positive impact of intelligent technology on the production of offshore oil platform.

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    Research on Downhole Circulation Opening Device of Oil and Gas Pumping Wells for Land and Sea Aircraft
    WANG Junfeng, LIU Jinhai, WANG Luyao, DOU Shuxia, YU Yanqun, SHANG Zunxuan
    2024, 11 (2):  34-38. 
    Abstract ( 10 )   PDF (2451KB) ( 5 )  
    Rod pump drainage is the main technology of land and sea oil and gas well production, but buried pump and stuck pump often happen. Based on the idea of switching between operations without moving pipe string, a downhole circulation opening device is developed. The downhole circulation opening device adopts full mechanical structure design, which can adapt to the complex production and operation conditions of oil and gas wells more widely. The sliding sleeve rotating mechanism is used to realize the switching between the opening and closing of the wellbore space, and the column locking mechanism is used to realize the purpose of sealing the well bottom. The total head loss of 0.818m under extreme working conditions is small, indicating that the flow channel is smooth and the structure is reasonable.
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     Application of Endoscopy Detection Technology in Quality Control of Duplex Steel Pipe Section of Offshore Platform
    YANG Sen, YU Chenglong, ZHANG Guodong, YANG Qifu, LUO Rugui
    2024, 11 (2):  38-42. 
    Abstract ( 6 )   PDF (3975KB) ( 4 )  
    Combined with the actual situation of the presence of fine cracks on the inner wall of a small number of pipe sections during the acceptance of the duplex stainless steel pipe section of a gas field group development project in the western South China Sea, the endoscopic detection technology was developed and the on-site visual inspection of the inner wall of the duplex stainless steel pipe section was realized. The inspection technology uses a standard optical probe to scan the inner wall of the pipe and archive the inspection results in a video and picture format on a storage device through a standard transport/storage chassis device to create a visual electronic file of the inner wall of the duplex stainless steel pipe section. The field application results show that the endoscope detection technology can effectively and effectively eliminate the defects caused by the inner wall of the pipeline such as cracks, folds and scratches in the production process. The detection technology has achieved good results in engineering and practical, and can be used for similar projects in the future. It can provide experience for reference.

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    Application Research of Energy Consumption Management System in LF12-3 Oilfiled
    WU Binfeng
    2024, 11 (2):  43-51. 
    Abstract ( 8 )   PDF (7928KB) ( 5 )  
    This paper mainly discusses the application of energy consumption management system (ECOMS) in LF12-3 offshore oil field. Firstly, the application background of the system is introduced. Then the design principles, system characteristics, architecture and functions of the system are elaborated. Finally, the important role of the energy consumption management system in the dynamic monitoring of production energy consumption and the improvement of energy efficiency of the offshore oil platform is summarized.
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    Brief Discussion on Procurement Expediting Management for FPSO Construction Project
    Yu Yongkun
    2024, 11 (2):  52-55. 
    Abstract ( 9 )   PDF (868KB) ( 5 )  
    The FPSO construction project procurement on schedule is affected by multiple factors. Taking “HYSY 123” FPSO project as an example, this paper briefly analyzes the factors that impact the procurement and delivery, and then introduces the implementation procedures of the project procurement expediting management in detail, and finally summarizes the considerable results achieved by implementing the procurement expediting. It could be adopted as a reference for the subsequent FPSO construction projects.
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    Technical Measures for Energy Conservation and Consumption Reduction of Natural Gas Long Distance Pipeline
    ZHANG Xiaodong
    2024, 11 (2):  56-58. 
    Abstract ( 8 )   PDF (856KB) ( 4 )  
    With the development of China's economy, new energy sources such as natural gas have been gradually developed and utilized, providing greater strength for China's economic construction. Considering the nature of natural gas, the use of long-distance pipeline is usually involved to ensure the safe and stable transportation of this energy source. By connecting pipelines, the construction of the gas supply system is completed in order to effectively utilize this energy source. However, considering the consumption during transportation, it is necessary to conduct further research on energy-saving and consumption reduction technologies for natural gas long-distance pipelines, reduce energy waste, reduce transportation costs, improve utilization efficiency, and promote the sustainable development of the industry.

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    One Hydraulic Displacement Compensation System for a Marine Adsorption Mooring Device
    LIU Yuliang, ZHU Di, ZHU Yongkai, OUYANG Lihu
    2024, 11 (2):  59-62. 
    Abstract ( 6 )   PDF (1691KB) ( 5 )  
    When the transfer loading and unloading of the ship, the longitudinal displacement between the ship and the dock or between the ship is changed. The traditional method is to compensate for the change of displacement by adjusting the cable. In this thesis, the author a compensation method that the relative displacement between the ship and the dock as the input quantity, calculates the control quantity of the hydraulic system through the PLC control system, and compensates the change of the ship's longitudinal displacement by the way of the stroke cylinder expansion of the hydraulic arm.
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    Application of Inrush Current Suppressor in Power System of Offshore Platform
    ZHANG Guodong, YANG Sen, YU Chenglong, DENG Guanhua, QIAN Cheng
    2024, 11 (2):  63-66. 
    Abstract ( 9 )   PDF (3918KB) ( 4 )  
    The offshore platform has small space, limited installed capacity of generators, increased load capacity, and increased load rate of transformers. The excitation inrush current during no-load closing of transformers causes a huge impact on both transformers and generators, and can also lead to closing failure. Most products use phase separation operation to control the closing angle and suppress the transformer closing inrush current. However, due to the three-phase linkage of the circuit breakers of the generator and transformer, the actual application effect is not ideal. The Vizimax MVX surge suppressor greatly reduces the amplitude of the surge and harmonic components by measuring and controlling residual magnetism, ensuring the success of each closing, improving power quality, and prolonging the life of core electrical equipment such as transformers and generators. It can provide experience and reference for similar engineering projects in the future.

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    Analysis and Treatment of Abnormal Phenomena of Oilfield Terminal Crude Oil Processing System
    ZHAO Wei, LI Shaopeng, CAO Zhixing, LIU Rui, QIU Shuang
    2024, 11 (2):  67-71. 
    Abstract ( 9 )   PDF (1171KB) ( 4 )  
    An abnormal oil-water separation occurred in the terminal FPSO crude oil treatment system of an oilfield in Bohai. Through analysis of the process conditions, it was found that the main reasons were a decrease in process temperature, changes in crude oil composition, and waste oil discharge from the upstream closed drain system. In response to the existing problems, targeted measures were taken, such as high-temperature oil well extraction, mixing of two series of crude oils, and optimization of closed drain pump discharge methods. Ultimately, the crude oil treatment effect was improved, ensuring that the crude oil in the lower hold was qualified.
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    Design and Application of Crude Oil Export Pumps on Unmanned Offshore Platforms
    ZENG Yunfei
    2024, 11 (2):  72-75. 
    Abstract ( 9 )   PDF (1260KB) ( 6 )  
    Faced with the unpredictable changes in oil prices, offshore oil and gas production needs to reduce costs and improve economic benefits. Therefore, the unmanned, digital, and intelligent development of offshore oil facilities is the trend. This paper focuses on the design and application of crude oil transport pump on offshore unmanned platform, including process design, important component selection, equipment operation protection function and remote control method, and describes the application management method of crude oil transport pump on unmanned platform, providing reference for the design and application of similar equipment on offshore unmanned platform in the future.
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    Application of Positive Motivation in Safety Management of Offshore Oilfield
    YIN Xiaohui, WANG Jing
    2024, 11 (2):  76-79. 
    Abstract ( 4 )   PDF (2141KB) ( 4 )  
    Due to the high-risk nature of offshore oil fields, safety management has become crucial. A certain oil field in Bohai is a foreign cooperative oil field, which has been operated by foreign parties until 2013, and the construction of safety culture is weak. After the return of oilfield operation rights in 2013, oilfield safety management faced numerous challenges. Oilfield managers have achieved impressive safety performance by adopting a series of effective positive incentive measures to promote the construction of oilfield safety culture and institutional systems. This article analyzes the positive incentive measures taken in the safety management work of a certain oilfield in Bohai, in order to provide reference for the safety management work of other oilfields.
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    Research on Rack Phase Difference of Truss-type Jack-up Unit
    CHEN Wei, YAN Ming
    2024, 11 (2):  80-86. 
    Abstract ( 7 )   PDF (2419KB) ( 5 )  
    Rack phase difference may be produced in the process of positioning of truss-type Jack-up unit, which will cause a significant additional bending moment at the contact position between the legs and the main hull of the unit, resulting in buckling failure of the leg support pipe at the low guiding position of the hull. In the paper, a jack-up unit is taken as the research object, ANSYS software and birth-death element technology is used to forecast RPD value of jack-up unit in the process of lifting hull by 3-D time-domain numerical simulation analysis, which is divided into four main stages according to changes of RPD value. On this basis, the RPD variation characteristics under three wind speed conditions are analyzed, which is helpful to determine the impact of wind speed on RPD in the process of lifting hull. Finally, a set of RPD control method is proposed based on the law of the change of RPD and the stress of the leg in order to monitor RPD of platform leg.
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    Discussion on the Feasibility of Developing Marginal Oil Fields in South China Sea by Jack-up Production and Storage Platform
    SHI Hemu, FAN Dunqiu, ZHANG Lin
    2024, 11 (2):  87-90. 
    Abstract ( 14 )   PDF (1035KB) ( 7 )  
    The stability of the foundation is crucial for the production safety of jack-up platforms. Firstly, the checking methods of foundation stability in the international standard (ISO 19905-1 and SNAME 5-5A) for in-place analysis of the jack-up platform are introduced, and then an engineering example is introduced to check the foundation stability of the platform. The results indicate that the vertical horizontal bearing capacity and anti-sliding capacity of the foundation at the target operation site meet the requirements of both specifications. Due to the differences in the determination of vertical ultimate bearing capacity in both specifications, there are differences in the vertical-horizontal foundation capacity envelopes, and the verification results according to ISO 19905-1 are more conservative.

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    Application of Inrush Suppression in Offshore Oil Platform
    HU Zhongliang
    2024, 11 (2):  91-94. 
    Abstract ( 3 )   PDF (1113KB) ( 4 )  
    Inrush current impact on the safe and stable operation of power systems for offshore oil platforms. Because of the protection of their initiation malfunction switch tripping, power shock, It has been very concerned about the problem electrician. This article analyzes the causes of inrush current generated, when the transformer pressure by controlling the magnetic circuit is not saturated to suppress the magnetizing inrush, the suppression strategy is to take points off control switch in the same time in the early phase of the applied voltage, to ensure the presence of residual magnetism magnetic bias offset opening formed after closing.

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    Fault Diagnosis of Electric Slip Ring of EPSO Single Point Mooring Base on CART Decision Tree
    ZHANG Baolei1, WU Yuke2, TANG Yufeng2
    2024, 11 (2):  95-100. 
    Abstract ( 8 )   PDF (2704KB) ( 8 )  
    In order to ensure the safety of electric slip ring system, it is necessary to carry out the research on the fault diagnosis method of electric slip ring. This method could provide the basis for the fault warning and troubleshooting of single point mooring electric slip ring. In this paper, a fault diagnosis model based on CART decision tree algorithm is adopted to diagnose the single point electric slip ring fault of FPSO. The sample data set is made by finite element method, and the fault diagnosis model of electric slip ring is obtained by training the data set. Finally, the diagnosis model is simplified by the post pruning method, and the fault diagnosis of the electric slip ring is realized. The analysis results show that the model has high accuracy and fast diagnostic speed, and can effectively diagnose the electric slip ring, so that the staff can take measures to repair or replace the electric slip ring in time to ensure the safety and normal operation of the FPSO.
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    Plugging Performance of Amphoteric Surfactant
    YANG Sen, DENG Guanhua, ZHANG Guodong, YANG Qifu, LUO Rugui
    2024, 11 (2):  101-105. 
    Abstract ( 9 )   PDF (5189KB) ( 4 )  
    The foaming and foam stabilizing properties of temperature-and salt-resistant amphoteric surfactants were studied. Through the foaming experiment, the temperature and salt resistant foaming agent (TTB, XXB) and foam stabilizer (AEO) were selected, and then the compound system of the three foaming agents and foam stabilizer was studied, and the formula with large foaming volume and good stability was obtained. Finally, the effects of temperature, NaCl and CaCl2 on foam properties were studied by foam stability experiments. At each experimental temperature (20℃, 60℃, 80℃, 90℃), the foaming volume of TTB, XXB and AEO series nonionic surfactants decreased to a certain extent, and the foam stability increased significantly with the increase of the concentration of EO (oxyethylene chain number) series surfactant. In addition, with the increase of EO (oxyethylene chain number), the foaming volume increases and the stability decreases. With the increase of temperature, the foam volume increases and the stability decreases gradually. With the increase of the concentration of Na+ and Ca2+, the foam volume gradually decreased and the stability increased, but the effect of Ca2+ was more obvious than that of Na+.
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    Research on Permanent Repair Plan for Submarine Gas Pipeline in the South China Sea
    ZENG Yunfei, DENG Guanhua, YU Chenglong, ZHU Zejin, ZHANG Guodong
    2024, 11 (2):  106-109. 
    Abstract ( 11 )   PDF (2202KB) ( 5 )  
    Subsea pipeline is the important facility of offshore field. Shutdown and huge lost should come with the damage which happen to the pipeline. The key points, which should be to consider before a subsea pipeline repair work, are operation difficulty, risk, time and schedule. This paper do the study of subsea pipeline repair solutions for the gas field subsea pipeline basing side lifting repair technology and hot-tapping plugging repair technology. The better solution will be confirmed by the analysis and comparison between different solutions.
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    Analysis of Natural Gas Recovery and Reuse Schemes in Offshore Oil and Gas Fields#br#
    JIN Benling
    2024, 11 (2):  110-115. 
    Abstract ( 10 )   PDF (2640KB) ( 6 )  
    In offshore oil and gas production facilities, oil production platforms account for a high proportion. In the treatment process of offshore oil and gas fields, natural gas mixed with well fluid is carried to the production and treatment process together. After treatment, part of the natural gas is used for fuel gas users or exported, and a considerable part is directly discharged by torch combustion, which causes a lot of air pollution and waste of natural gas energy. How to realize the recovery and reuse of natural gas is the focus of this paper. Therefore, the author analyzes the development of natural gas recovery technology programs in recent years, analyzes several methods of natural gas pressurization, and formulates several natural gas recovery and reuse programs based on the experience summarized in the project.
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    FPSO Working Chamber Underwater Detection Device Coupled Motion Response#br#
    ZHANG Baolei, SUN Bing, ZHANG Hehe, CHEN Xiao, TIAN Guozhi
    2024, 11 (2):  116-122. 
    Abstract ( 6 )   PDF (2092KB) ( 4 )  
    Underwater robots are widely used in ocean engineering and deep-sea exploration. Due to the complex and harsh sea conditions of FPSO operations, the release and recovery of ROV is an important factor affecting its operational capability. We Shcald select the optimal storage and retrieval method based on the characteristics of the homework and the weight of the underwater detection device, collect data on the sea conditions in the target sea area, analyze the motion response of underwater detection devices in the operating sea area, and use the normative method to verify the structural strength of the work cabin in different states. This article takes the implementation of FPSO work cabin in Lufeng 12-3 oilfield as the background. By using AQWA software to establish FPSO and underwater detection device models, the hydrodynamic response analysis of underwater detection devices, ships and their mooring systems is carried out, and compared with experimental values. The simulation analysis and experimental results are close and reliable. Finally, based on the motion amplitude of the underwater detection device under the most dangerous working conditions, the appropriate boom stroke is selected.
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