4月30日零时，从长庆油田陕西榆林生产一线传来消息，中国石油长北国际合作项目累计生产天然气突破600亿立方米，相当于替代了7200万吨标煤，减少碳排放物1.6亿吨，为推动企业绿色低碳转型，促进区域经济社会发展、能源国际化合作作出了积极贡献。

中国石油长北国际合作项目是目前我国陆上石油天然气上游业务中，已建成累计产量最高的对外国际合作项目。自1999年开发以来，项目先后经历勘探评价、试生产、规模开发3个阶段，充分发挥合作方和中国石油自身的管理、技术优势，连续15年天然气产量保持在30亿立方米以上，成为中国石油上游业务国际合作的典范和样板。

为加快建设低渗透致密气藏协同高效开发示范区，实现效益发展，作为项目中方作业者的长庆油田长北作业分公司，积极推进落实集团公司各项决策部署，与合作方壳牌公司协作推动气藏开发生产、安全环保管控、生产模式转型等各项工作齐头并进。创新推行“井丛井组、稀井高产、井间接替、分区开发、定压生产”双分支水平井开发模式，形成了以双分支水平井开发技术为核心的地质气藏、钻采工程、地面集输3类18项主体工艺技术系列，并按照“一类一策、一井一法”精细化、差异化管理原则，规模化运用“移动计量橇放空、柱塞作业、速度管柱塞复合作业、热动力泡排”4项增产技术，制定切实有效的生产措施，气田综合递减率始终控制在15%以内，实现了提产增量。

精细化管理就是精益化发展。项目创新提出完整性管理理念，以设计、操作、技术为三大抓手，依托先进的QHSE管理理念，以“能量隔离法”为引领，在长期的生产建设实践中，全面提炼总结出以“十法十工具”为代表的多项安全特色管理成果，连续18年开展不同主题的“安全日”活动。截至目前，已实现安全生产3129天，无损失工时达到1067万小时，累计人工工时达到4076万小时，被中国石油誉为上游企业“HSE管理典范”，是榆林市唯一安全文化创新实践基地。

此外，在国家“双碳”战略目标引领下，项目从“节能降耗、清洁替代、战略储备”3个层面加快产业布局，积极构建绿色产业结构和低碳能源供应体系，探索符合开发实际的绿色低碳转型路径。通过加大分布式光伏项目建设、企地共建“塞上森林城”等，实现碳汇于林、生态改善、绿色发展综合效益，树立企业绿色环保的形象，能源结构转型步伐持续加快。目前，项目新能源年平均发电量达到70万千瓦时，建成碳汇林350亩。树木成熟后，预计二氧化碳吸收量约为350吨/年。

At midnight on April 30, news came from the production line of Changqing Oilfield in Yulin, Shaanxi Province, that the cumulative production of natural gas by petrochina Changbei International Cooperation Project exceeded 60 billion cubic meters, equivalent to replacing 72 million tons of standard coal, reducing carbon emissions by 160 million tons, and making positive contributions to promoting the green low-carbon transformation of enterprises, promoting regional economic and social development, and international energy cooperation.

Petrochina Changbei International Cooperation Project is a foreign international cooperation project with the highest cumulative output in China's onshore oil and gas upstream business. Since its development in 1999, the project has gone through three stages of exploration and eva luation, trial production and large-scale development, giving full play to the management and technical advantages of the partners and CNPC itself, and the output of natural gas has remained above 3 billion cubic meters for 15 consecutive years, becoming a model and example of international cooperation in the upstream business of CNPC.

In order to accelerate the construction of a demonstration area for collaborative and efficient development of low permeability tight gas reservoirs and achieve beneficial development, Changqing Oilfield Changbei Operation Branch, as the Chinese operator of the project, actively promotes the implementation of various decisions and deployments of the Group company, and collaborates with Shell Company to promote the development and production of gas reservoirs, safety and environmental protection control, and production mode transformation. Innovative implementation of the two-branch horizontal well development model of "well cluster, low well production, inter-well replacement, zonal development, and constant pressure production" has formed a series of 18 main process technologies in 3 categories: geological gas reservoir, drilling and production engineering, and surface gathering and transportation with the development technology of two-branch horizontal Wells as the core, and in accordance with the principle of "one policy for one class, one well and one method", fine and differentiated management. Four stimulation technologies, "mobile metering sled unloading, plunger operation, velocity tube plunger combination operation, thermal and dynamic bubble drainage", were applied on a large scale, and practical and effective production measures were formulated. The comprehensive decline rate of the gas field was always controlled within 15%, and the production increase was realized.

Fine management is lean development. Project innovation put forward the concept of integrity management, with design, operation and technology as the three main points, relying on advanced QHSE management concept, guided by "energy isolation method", in the long-term production and construction practice, comprehensively extracted and summarized a number of safety characteristics management results represented by "ten methods and ten tools", and carried out "Safety Day" activities with different themes for 18 consecutive years. Up to now, it has achieved 3129 days of safe production, 10.67 million hours without loss of working hours, and 40.76 million hours of accumulated manual working hours, which has been praised as the "HSE management model" of upstream enterprises by CNPC, and is the only safety culture innovation practice base in Yulin City.

In addition, under the guidance of the national "dual carbon" strategic goal, the project accelerated the industrial layout from the three levels of "energy conservation and consumption reduction, clean substitution, and strategic reserve", actively built a green industrial structure and low-carbon energy supply system, and explored a green and low-carbon transformation path in line with the actual development. By increasing the construction of distributed photovoltaic projects, enterprises to build a "forest city", etc., to achieve carbon sink in the forest, ecological improvement, green development comprehensive benefits, establish a green image of the enterprise, the pace of energy structure transformation continues to accelerate. At present, the average annual power generation of new energy in the project has reached 700,000 KWH, and 350 acres of carbon sink forest has been built. When the trees are mature, they are expected to absorb about 350 tons of carbon dioxide per year.