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Practical Application of Geological engineering Integrated Horizontal Well drilling technology in Complex Fault Block reservoir of Niger 13th

Practical Application of Geological Engineering Integrated H...

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13th International Field Exploration and development Conference, IFEdC 2023

作者： Jing, Ning Liu, Ji-Tong Liu, Yu-Han Qian, Feng Zhou, Chuan Ye, dong-Qing Yu, Gang Shi, Xiu CNPC Niger Petroleum S.A Niamey Niger CNPC Engineering Technology R&D Company Limited Beijing China Petroleum Engineering Research Institute of Dagang Oilfield Tianjin China GWDC Drilling Technology Service Company Beijing China

ISBN: (纸本)9789819702558

Niger is located in the hinterland of Sahara desert, where fault blocks are scattered and distributed in a zonal pattern. The typical fault block, dibeilla N-1, whose reservoir is shallow and heterogeneous, and developed with strong edge-bottom water. The implementation of horizontal Wells faces many technical problems, such as formation identification while drilling, orientation in large porous sandstones, trajectory precise control and selection of completion method. Through technology integration and innovation, the geological engineering integrated horizontal well drilling technology of Niger is established. This technology integrates Petrochina's independent innovation product Near-bit Geosteering System (CGdS), establish an integrated geoengineering steering model. Based on the EICS remote technical support platform, the remote geosteering tracking decision and engineering parameter optimization while drilling operation mode are created, and the AICd intelligent flow control water sand control completion tool is selected. The application of the geology and engineering integrated horizontal well drilling technology supported the successful drilling of the first 6 horizontal Wells in the Niger project, realizing the precise control of the reservoir trajectory of horizontal Wells, the formation identification thickness of 2 m, the target rate of 100%, the reservoir drilling rate of 92%, the production of a single well increase by 2.3 times, effectively prolonging the water-free oil production cycle, and effectively supporting the goal achievements of high-production with few wells and high-efficiency development. It provides practical experience for the development and construction of the same type of reservoir. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Horizontal wells

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The Successful Application of Expansion Tube technology in the Bongor Basin of Chad 13th

The Successful Application of Expansion Tube Technology in t...

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13th International Field Exploration and development Conference, IFEdC 2023

作者： Zhong, Zhao Li, Xiao-Gang Liu, Ji-Tong Ji, Fei Li, Gang-Lu Jia, Tao Liu, Chen-Chao Zhang, Guo-Bin Liu, Shan-Shan CNPC Engineering Technology R&D Company Limited Beijing102206 China China National Oil and Gas Exploration and Development Corporation Beijing100034 China CNPC Bohai Drilling Engineering Company Limited Tianjin300452 China

ISBN: (纸本)9789819702558

The Bongor is the main basin for increasing storage and production in the cnpc Chad. With the continuous deepening of development, underground safety operations face the following problems: the inability to effectively seal the gas layer in the overlying strata of the basement, the high risk of secondary completion of the basement gas injection well, and the poor stability of the wellbore in the M group shale formation. In response to the bottleneck problems faced by underground operations, geological, drilling, logging, and other data were analyzed and sorted. Based on the expansion tube technology, the safety sealing technology for high-pressure gas cap in basement, secondary completion technology for basement gas injection wells, and openhole sealing technology for expansion tubes were optimized and formed. They were successfully applied for the first time in the Bongor Basin, achieving a daily gas injection volume of 2000 Nm3, shortening the construction cycle, improving wellbore quality, and reducing complex underground risks, Subsequently, it will be widely promoted and applied as a mature technology, supporting the efficient development of the Bongor Basin. At the same time, the expansion tube technology has a demonstration effect on the development of similar oil fields due to its good practical functions and application value [1–6]. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Gases

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design and Experiment of Turbine Generator Applied to Gas drilling 13th

Design and Experiment of Turbine Generator Applied to Gas Dr...

引用

13th International Field Exploration and development Conference, IFEdC 2023

作者： Wang, Lei Guo, Xian-Wei Shi, Hong-Jiang Cao, Chong ding, Hua-Hua CNPC Engineering Technology R&D Company Limited Beijing102206 China National Engineering Research Center of Oil and Gas Drilling and Completion Technology Beijing102206 China

ISBN: (纸本)9789819702558

With the maturity of electromagnetic wave transmission measurement while drilling technology, em wave transmission tools have been applied to the measurement and control of gas drilling well trajectory. However, due to the dry shaft wall and poor conductivity of gas drilling, especially the electromagnetic wave signal attenuates obviously in the formation, the transmission distance is affected. Enhance the emission power of electromagnetic waves could decrease the impact of signal attenuation, At present, measurement while drilling system is powered by battery in gas drilling, but the output of battery power is limited. The downhole generator technology can effectively improve the emission power of the signal source, However, due to the low gas density and compressibility, the conventional turbine components cannot drive the rotor shaft of the downhole generator as normal. This paper use the classical formula to determine the performance parameters of the gas drilling downhole generator body, Based on the study of the velocity vector triangle of the turbine blade in the two-dimensional flow field, analyzed the relationship between turbine output speed and torque in gas drilling conditions, then proposed to increase the torsional characteristics of turbine output by using planetary gear mechanism, through the above research, the air-drive turbine suitable for gas drilling is developed. CFd software is used to simulate the full three-dimensional flow field of the turbine, and the simulation results meet the design expectations. The test verifies that the steady-state output of the gas-driven turbine generator can reach 500 W, which meets the high-power emission requirements of electromagnetic wave transmission in gas drilling. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Electromagnetic waves

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Vibration condition analysis based on surface-underground engineering measurement parameters 7

Vibration condition analysis based on surface-underground en...

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7th International Conference on downhole Measurement and Control, ICdMC 2024

作者： Fan, Jinchao Fang, Chao Xu, Zhaohui Lin, Zili CNPC Engineering Technology R&D Company Limited Beijing102206 China National Engineering Research Center of Oil & Gas Drilling and Completion Technology Beijing102206 China

Accurate identification of abnormal vibration conditions is an important guarantee for drilling safety. In the process of deep oil and gas and unconventional oil and gas production, only the surface parameters can not effectively identify the abnormal vibration conditions in the drilling process. It is an important method to accurately identify abnormal vibration conditions to obtain the engineering parameters near the bit by using downhole parameter measurement tools and analyze the data combined with the surface logging data. To solve the above problems, this paper firstly studies the storage downhole parameter measurement tool, which can obtain the parameters of weight on bit, speed, torque, temperature, pressure and acceleration near the bit position. Finally, field tests are carried out, and the experimental results show that the tool can effectively obtain engineering parameters near the bit position, and can effectively identify abnormal downhole vibration conditions based on surface-downhole parameters, which can provide strong support for drilling operations. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Infill drilling

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Improvement and Test Analysis of Multilateral Well technology with Expandable Tubular Positioning 12th

Improvement and Test Analysis of Multilateral Well Technolog...

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12th International Field Exploration and development Conference, IFEdC 2022

作者： Hu, Zhi-Jian Wang, Jun Liang, Guo-Hong CNPC Engineering Technology R and D Company Limited Beijing China

ISBN: (纸本)9789819919635

Multilateral well technology is expected to become an effective means to realize the three-dimensional and efficient development of massive carbonate reservoirs in Halfaya oilfield. Multilateral well technology with expandable tubular positioning has the advantages of accurate and reliable positioning and simple operation, but it has shortcomings in terms of expansion resistance treatment, whipstock fishing and wellbore connection, which may lead to the failure of multilateral well operation. Therefore, in the paper, based on the original technology, the expansion positioning tool, whipstock and wellbore connection method were improved and tested. A releasable expansion positioning tool was designed, so as to take out the downhole string by dropping release at the time of expansion resistance and take remedial measures;by means of optimizing the structure and fishing method of the whipstock, the risk of fishing failure caused by mechanism blockage due to cuttings settlement was reduced, and the success rate of fishing was improved;moreover, the scheme of connecting the main and lateral wellbores after cementing by temporary blocking window or milling window method was designed and verified, which provided an effective method to improve the completion quality and success rate of multilateral well. The above scheme provides a helpful reference for solving the shortcomings of the current multilateral well technology with expandable tubular positioning and developing a multilateral well system suitable for the development of Halfaya oilfield. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： risk assessment

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Planning Model and Optimization Method of Seven-Section Well-Path for Three-dimensional Horizontal Wells 12th

Planning Model and Optimization Method of Seven-Section Well...

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12th International Field Exploration and development Conference, IFEdC 2022

作者： Tang, Xue-Ping Gao, Wen-Kai dou, Xiu-rong Peng, Lie-Xin Lv, Hai-Chuan CNPC Engineering Technology R and D Company Limited Beijing China

ISBN: (纸本)9789819919635

In order to reduce the difficulty of trajectory control for three-dimensional horizontal wells in shale oil and gas fields, a seven-section well-path planning model for three-dimensional horizontal wells is established, and the solving method is studied. According to the application requirements, the design parameters are classified into 3 categories and 18 common parameter combinations. Because the parameter constraint equation is a multivariate nonlinear equation system, it involves many variables and is difficult to solve. For this reason, based on the five-section three-dimensional circular arc well-path model, the analytical formulas of two parameter combinations for the seven-section well-path model are obtained, and then the piecewise iterative method is used to solve other parameter combinations. An optimization method of seven-section well-path planning is further discussed for three-dimensional horizontal wells. Based on the analytical formulas of the seven-section model, according to the constraints, the design parameters are selected for multi-scan solving, and then the solution results are checked and compared, which better solves the multivariate nonlinear constraint optimization calculation problem. According to the model and solving method in this paper, a seven-section well-path design program is developed for three-dimensional horizontal wells. The case study shows that the model in this paper is universal, the solution and optimization method is simple, effective and practical, the calculation is accurate, and it is easy to program and realize, which has the value of popularization and application, and provides technical support for the optimal and fast drilling of three-dimensional cluster horizontal wells in shale oil and gas fields. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Iterative methods

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Technologies and Achievements for drilling and Completion of Onshore deep and Ultra-deep Wells in China

Technologies and Achievements for Drilling and Completion of...

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2025 International Petroleum technology Conference, IPTC 2025

作者： Zhang, Jiawei Wang, Haige Ji, Guodong Cui, Meng Chen, Lili Li, Wenzhe Liu, Li CNPC Engineering Technology R&D Company Limited Beijing China PetroChina Southwest Oil & Gas Field Company Sichuan China Engineering Technology Research Institute PetroChina Southwest Oil & Gas Field Company Sichuan Chengdu China

ISBN: (纸本)9781959025436

In the last decade, newly discovered oil and gas reservoirs have gradually shifted from shallow-medium to deep and ultra-deep layers globally. China also has great potential in deep and ultra-deep oil and gas resources, which is identified as the main frontiers due to the increasing difficulty in maintaining economic and sustainable hydrocarbon production from shallow-medium fields after long-term continuous exploitation. The cost-effective E&P of deep and ultra-deep oil and gas resources are crucial for achieving China's energy transition and succession strategy. This paper reviews numerous challenges encountered during the drilling and completion of deep and ultra-deep wells, including down-hole tool failure due to ultra-high temperature, well control risks from ultra-high pressure, well control or leakage risks due to the narrow pressure window, low rOP due to high strength and abrasive formations, and pipe stuck or wellbore stability problems in salt or mudstone layers. The paper also presents the breakthroughs and applications of high-end equipment, cutting-edge tools and core downhole fluids developed to overcome these challenges, ensuring safe and efficient drilling and completion operations of deep and ultra-deep wells. With successful breakthroughs and applications of technologies including the 12000m drill rig, wellbore structure optimization, managed-pressure drilling, efficient drill bits, drilling speed-up, ultra-high temperature resistant and high-density drilling fluids, leakage prevention, cementing, ultra-high temperature and pressure resistant oil testing and completion, and ultra-deep coiled tubing equipment, the number of onshore deep and ultra-deep wells in China has been increasing in recent years. Continuous improvements have been achieved in technical performance indicators such as the drilling cycle, rOP and other metrics. Over 200 wells successfully drilled with Md exceeding 8000m have enabled China to normalize 8000m ultra-deep onshore dri

关键词： Coiled tubing

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drilling Optimization for Ultra-long Slim Hole Horizontal Wells in duvernay Shale project, Canada

Drilling Optimization for Ultra-long Slim Hole Horizontal We...

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International Petroleum and Petrochemical technology Conference 2024, IPPTC 2024

作者： Kong, Lulin Wang, Haige Cui, Longlian Zhao, Xiangguo rao, LiangYu Zhang, Shupin CNPC Engineering Technology R&D Company Ltd. Beijing China CNPC International Exp. & Dev. Company Ltd. Beijing China PetroChina Canada Ltd. AB Canada

Objective/Scope(30-75): drilling contractors have always strived to pursue higher single well production and lower well-construction cost in order to achieve higher return on investment. Efforts have been made in recent years to break technological barriers to create ultra-long(>3500m) slim hole horizontal wells in duvernay shale project. However, there were many challenges while extending the 6.75-in. slim hole laterals, such as 1) difficulty in weight transfer regarding motor slide drilling, 2) high down-hole friction torque and high ECd, 3) short servicing life and low efficiency of MWd, 4) inability to tracking thin substrata with limited logging tool, 5) production casing deployment challenges including stuck pipe risk and long running time. To overcome these obstacles, systematic solutions were proposed for unconventional ultra-long horizontal wells. Methods, Steps, and Process(75-100): This paper proposes an integral drilling program to enhance overall drilling performance of ultra-long horizontal wells. First, Slim hole design to reduce well-construction cost through a reduction in steel, cement and fluid costs. Second, the upper drilling string upgraded from 4-in. drill pipes to 4.5-in. drill pipe with an advanced reduced Od premium connections, while Bottom Hole Assembly (BHA) employed even-wall stator PdM and Motorized rSS to improve drilling efficiency;Third, the OBM system is optimized for strong stability, lower friction, and clay-free invert emulsion to ensure safety drilling of longer laterals. Additionally, the MPd is equipped to maintain a lower ECd with minimal downhole losses;Then, a near-bit vibration sensor integrated into the rSS was deployed to provide real-time assessment of the severity of downhole shock and vibration. reasonable drilling parameters were adjusted to reduce or eliminate downhole vibration and mitigate motor and MWd failure. Next, Azimuthal Gammy ray was adopted and incorporated with dynamic drilling parameters data in real-t

关键词： Bottom-hole assembly

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research on graphene oxide modified polymer as multifunctional filtration reducer for oil-well cementing

Research on graphene oxide modified polymer as multifunction...

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Chinese Materials Conference 2022-2023

作者： Xu, P. Xia, X.J. Jin, J.Z. Yu, Y.J. Zhang, J.Y. Zhang, H.Z. CNPC Engineering Technology R and D Company Limited Beijing China

Conventional filtration reducers have limited utility in cementing at deep oil and gas fields because of their poor temperature resistance and single function. As a novel multifunctional filtration reducer, graphene oxide-modified polymer GO-PAdI was developed by radically copolymerizing 2-acrylamido-2-methylpropane sulfonic acid (AMPS), N, N-dimethyl acrylamide (dMAM) and itaconic acid (IA) between graphene oxide sheets. The microstructure of GO-PAdI was confirmed through the utilization of different methods such as fourier transform infrared spectroscopy (FT-Ir). The performance evaluation results showed that GO-PAdI had the high thermal stability, and could control filtration of cement slurry as conducted by the American Petroleum Institute (API) less than 50 mL, which is 17 % lower than that of the traditional filtration reducer PAdI. GO-PAdI could increase compressive strength of cement stone by 30.3 %, and decrease elastic modulus by 10.9 % in three-day curing period. GO-PAdI has the multifunctional functions of reducing fluid loss, strengthening and toughening, and can effectively improve the engineering performances for high-temperature cement slurry. © Published under licence by IOP Publishing Ltd.

关键词： Gas industry

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development of Intelligent drill Pipe for Power Supply and Communication 12th

Development of Intelligent Drill Pipe for Power Supply and C...

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12th International Field Exploration and development Conference, IFEdC 2022

作者： Han, Fei Wang, Ai-Guo Hu, Zhi-Jian Wang, Hong-Wei Qiao, Han CNPC Engineering Technology R and D Company Limited Beijing China

ISBN: (纸本)9789819919635

Power supply and communication intelligent drill pipe is a bridge to realize high-speed two-way information communication and power transmission between ground and underground. In order to realize intelligent electrification and informatization of drilling, the ground and underground cables are connected by the way of built-in cableâ€‰+â€‰wet joint in the water hole of conventional drill pipe, and the two-way coupling transmission of power and communication signals is realized through power wave carrier and downhole adapter. Through the simulation and optimization design of key components such as wet joint and the testing of sealing, insulation and signal communication performance of drill pipe system, an intelligent drill pipe for power supply and communication is developed. The tool adopts contact power supply and communication mode, and the performance of 3000 m non relay communication and sealing and insulation reliability in severe water immersion environment have been verified. The tool has been tested in real drilling. The 150 m long wet joint cable only brings about 3 dB attenuation of carrier signal, and the power supply and communication performance are reliable. The development of this drill pipe is of great significance to promote the construction of Intelligent Long-distance non relay high-speed two-way communication channel for drilling automation and the development of accurate control of drilling tool electrification. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： drills

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