[Haichuan Digital Delivery] Case Study: Digitalization of the Kalamaili Cryogenic Project in Xinjiang Oilfield

For the digital delivery of Kramei, the Damengsheng PIMCenter Handover industrial digital handover system was used throughout the process. It was carried out jointly by all parties involved, and the task was completed in 21 months. A total of 210 G of delivery data were generated, comprising over 1.3 million records; the accuracy rate of the final delivery data exceeded 99.5%. It fully achieved the goals of \"data sharing, resource sharing, and interconnection,\" and for the first time, a complete and high-quality digital factory was established in the Xinjiang oil fields. As a key project of Xinjiang Oilfield Company as well as a model project for digital delivery, the digitalization efforts related to the Klamaili cryogenic efficiency improvement project have received significant attention from the group company. For key digital delivery tasks, the Klamari EPC project team established a dedicated EPC digital task force to conduct specialized research and summarize relevant insights in the early stages. Under its organization, Damasheng, together with Gas Production Plant No. 1, the design institute, and others, classified 131 subcategories of plant entities based on the characteristics of this project, covering 17 specialties, and jointly formulated unified technical specifications. Furthermore, to ensure the consistency and authenticity of the 3D models, under the organization of Gas Production Plant No. 1, Damesheng, along with the design institute and other project participants, made more than a dozen trips to Klamaili for on-site verification. Under the coordination of the task force, throughout the data delivery process, a total of 108 project progress meetings were held. 62 participating organizations, with over 140 people in total, were brought together to submit, review, verify, and update the delivered content on numerous occasions. The document and data provided by each participating organization were repeatedly checked for consistency, compliance, and completeness. Dameisheng, in collaboration with the EPC project management company, Gas Production Plant No. 1, and other stakeholders involved in the project, overcame various challenges such as tight deadlines, heavy workload, limited staffing, and the impact of the pandemic. By working together, they successfully fulfilled the contract requirements in an efficient manner, assisting Xinjiang Oilfield Company in establishing a digital management platform for the entire life cycle of the project. High-quality digital outcomes were delivered during the construction phase, adding a significant contribution to Xinjiang Oilfield Company’s journey toward digital transformation. To meet the needs of the digital transformation and intelligent development of the Xinjiang oil fields, this project has pioneered the digital construction of surface engineering in these oil fields, holding significant and far-reaching practical importance. At the same time, high-quality digital delivery will bring about transformative improvements to the surface engineering construction of Xinjiang oil fields, providing solid data support for future intelligent operation and maintenance.

After years of development, some gas wells in the Kelamai and Mahe gas fields have been shut down or operated intermittently due to water production, low reserve volumes under well control, declining pressure and production rates, as well as restrictions imposed by the existing high-pressure gathering system. At the same time, during the early production phase of the gas field, the failure to recover and utilize the heavy hydrocarbon components in the natural gas reduced the overall economic efficiency of gas field development. To address the adaptability issues in gas field gathering and transportation processes, while fully tapping into the potential benefits of gas field development. Given that the deep processing and comprehensive utilization of natural gas in the country are advancing at a rapid pace, the Xinjiang oil fields have taken natural gas compression and cryogenic efficiency improvement projects as a starting point, and by modifying the existing pipeline transportation processes, they ensure that gas produced from high-, medium-, and low-pressure wells can all reach the treatment facilities. At the same time, by adding cryogenic units, the problem of difficulty in recovering heavy hydrocarbon components caused by limitations in cooling temperatures is addressed, thereby enhancing the expansion of the natural gas industry chain and the development of by-products. As early as October 2016, at the meeting to advance the efforts to improve efficiency in the surface engineering of Xinjiang oil fields during the 13th Five-Year Plan period, the deep-cold efficiency improvement project for the Kalamaili gas field was identified as one of the key tasks for further improving efficiency. Once the cryogenic project is completed and put into operation, the Karamay and Mahe gas fields will be able to produce nearly 166,000 tons per year of three types of products: liquid ethane, liquefied gas, and stabilized light hydrocarbons. This is expected to increase annual profits by 220 million yuan. It not only unlocked the production potential of the gas field and improved the profitability of natural gas products, but also achieved good economic benefits ； It also brings significant social and environmental benefits, helping to shift the composition of natural gas products from the Xinjiang oil fields toward those with higher technical content and greater added value.

Completed over 21 months, a total of 210 G of data was generated, comprising more than 1.3 million records; the accuracy of the final delivered data exceeded 99.5%. It fully achieved the goals of \"data sharing, resource sharing, and interconnection,\" and for the first time, a complete and high-quality digital factory was established in the Xinjiang oil fields.