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Pathways and Prospects for Intelligent and Green Development of Oil and Gas Driven by Multi-Energy Integration

LI Gensheng, WANG Tianyu, LI Jie, TIAN Shouceng, SONG Xianzhi, LIU Zihao, MA Zhengchao

Xinjiang Oil & Gas 2025, 21 (3): 1-13. DOI: 10.12388/j.issn.1673-2677.2025.03.001

Abstract （30）

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Driven by China′s "Dual Carbon" strategy and ongoing energy transition background，the oil and gas industry is accelerating its shift toward multi-energy integration，intelligent coordination，and low carbon green development. This study aims at the goal of intelligent and green oilfield development and investigates pathways for multi-energy integration. The advances in new energy deployment and smart oil and gas field construction in both China and other countries are reviewed，and five representative integration routes are identified：synergistic power supply via "wind-solar-geothermal-storage"；intelligent wellsites；in-situ underground conversion；optimized surface gathering and transportation；and solid waste to resource utilization that pursues forming a comprehensive framework for clean substitution and system wide coordination. A case study of Xinjiang Oilfield is presented to show a multi-energy integrated operation scenario characterized by "source-grid-load-storage" coupling adapted to the energy profile and resource conditions of the oilfield. Moreover，this study further addresses technical bottlenecks，including production instability under intermittent energy supply and deep geothermal extraction efficiency. Results indicate that coordinated deployment of multi-energy systems and intelligent decision making can significantly improve development efficiency，energy utilization，and emission reduction，showing broad prospect of promoted engineering applications and offering crucial pathways to support the intelligent and low carbon transformation of the oil and gas industry.

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Research Status and Development Proposal of ROP Improvement Technology with Percussion Rock-Breaking Method

LI Gensheng, MU Zongjie, TIAN Shouceng, HUANG Zhongwei, SUN Zhaowei

Xinjiang Oil & Gas 2024, 20 (1): 1-12. DOI: 10.12388/j.issn.1673-2677.2024.01.001

Abstract （172）

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Enhancing the rate of penetration （ROP） is crucial for optimizing the efficiency of oil and gas development and deep exploration in China and ensuring national energy security. The percussion rock-breaking drilling technology has been applied in oil fields at home and abroad，resulting in significant improvements in ROP. Further research efforts are expected to address the technical challenges of low drilling footage and limited ROP enhancements encountered during deep exploration of hard rock formations with high temperature and pressure. This paper presents and analyzes the practice and development trends of the drill bit percussion rock-breaking drilling technology assisted by axial percussion，torsional percussion，and axial-torsional coupled percussion. It illustrates that the percussion-assisted drill bit rock-breaking mechanism is the core of percussion rock-breaking ROP improvement technology. This paper also reviews the scientific advancements made by domestic and overseas research scholars in physical experiments，theoretical modeling，and numerical simulation of percussion-assisted drill bit rock-breaking. In addition，it offers relevant proposals for the development of percussion rock-breaking ROP improvement technology，i.e. advancing research on material structure optimization design，intelligent control，integration of multiple technologies，and optimization of well applications. This is expected to provide valuable insights for enhancing the drilling efficiency in energy development of our country.

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Numerical Simulation for Controlling Fracture Propagation of an Infill Well with Radial Multilateral Wells

ZHANG Yupeng, SHENG Mao, WANG Bo, LI Jie, TIAN Shouceng, ZHANG Zhichao, LI Gensheng

Xinjiang Oil & Gas 2022, 18 (3): 31-37. DOI: 10.12388/j.issn.1673-2677.2022.03.006

Abstract （102）

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Fracturing of infill horizontal wells is one of the effective ways to improve the recovery factor of shale oil and gas. However， practices show that the production of an infill well after fracturing is generally lower than that of the parent well， and the fracturing effect is limited. The nature lies in that the fracture propagation of an infill well communicates with the pressure depletion zone of the parent wells， which makes it difficult to produce the remaining inter-well oil and gas resources. This paper proposes that radial multilateral wells be used to control the fracture propagation of an infill horizontal well， so as to increase the contact area between fractures and untapped oil and gas areas and prevent fractures from entering the pressure depletion areas of the parent well， which is expected to be a solution to the engineering problem of infill wells with poor fracturing effect. Therefore， a fracture propagation model of radial multilateral wells is established with the complicated uneven inter-well stress fields taken into account. The influence pattern of the uneven stress fields in different production phases of the parent well as well as the parameters of radial multilateral wells on the propagation of fractures are studied， and the optimal azimuth angle of a lateral borehole is selected. The results show that radial multilateral wells can effectively control the propagation of fractures in those untapped areas in different production phases of the parent well. The feasibility of controlling the fracture propagation of an infill horizontal well with multi-lateral wells is validated. The angle between a lateral borehole and the infill horizontal well is the main controlling factor affecting the forms of fractures.

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