China News Service, Xi'an, March 23 (Reporter Alina) "Currently, our self-developed salvage-free underground choke has been tested on site. On average, the on-site construction operations of each gas well have been reduced by 2 times, and the operation cost of the measures has been reduced by 61.4%. It has achieved 'complete no fishing' for chokes and 'zero increment' for difficult wells." According to a technician from PetroChina Changqing Oilfield Oil and Gas Technology Research Institute, as of March 20, the downhole throttling technology innovatively developed by Changqing Oilfield has The cumulative application has exceeded 20,000 well times, solving the high-cost operation problems of gas well hydrate blockage and surface throttling, and providing strong support for the economic and effective development of winter natural gas supply.
The third gas production plant intelligently measures gas wells. Photographed by Yu Ying
It is understood that during this round of winter supply, Changqing Oilfield continued to increase technological research on unconventional natural gas development, efficiently completed the construction of gas field production capacity, rapidly promoted gas reservoir evaluation, and further promoted projects such as "ballast stone" and enhanced recovery in old gas fields. , innovating the project construction model integrating technical support and production management, systematically promoting the construction of intelligent gas fields, and fully ensuring the gas demand of residents in more than 40 large and medium-sized cities downstream.
Employees on the job are using smart VR glasses to check the construction progress and construction quality of Suide Natural Gas Treatment Plant. Photo by Bao Kun
Since 2023, Changqing Oilfield has deepened gas field exploration geology research, increased the integration of exploration and development, strengthened seismic and process technology research, innovatively used loess plateau three-dimensional seismic technology to conduct "high-precision CT" for the formation, and promoted the rapid implementation of Hengshan Gas Field. The potential of the deep tight gas area in Longdong is released. In order to transform gas reservoirs in new fields from "visible" to "taken out", Changqing Oilfield relies on the "sharp tool" of collaborative innovation to explore and form a series of 8 process technologies such as anti-collapse and leakage plugging and speed-up research, and test the use of seams. Seven process technologies, including end-temporary plugging and integrated pressure and discharge, have made every effort to "press" natural gas resources out of complex formations. The output of single wells has repeatedly reached new highs. The gas field drilling and testing progress and benefits have been "double improved", and the resilience of winter supply has been guaranteed. Stronger and more confident.
Changqing Oilfield vigorously promotes the construction of intelligent oil and gas fields and accelerates the research and development and application of robots and drone technologies. Photo by Huang Chenchen
In view of the characteristics of deep-seated tight gas reservoirs such as deep burial, thin thickness, and developed fractures, Changqing Oilfield has innovatively integrated development technologies such as horizontal well development, optimal and fast drilling, and high-intensity stimulation, constantly breaking through the limits of efficient development of tight gas, and creating an increase in natural gas reserves and production. New "Growth Pole". In order to extend the stable production period of the gas field, Changqing Oilfield has gradually formed a unique series of supporting drainage and gas production technology through continuous exploration and testing, upgraded intelligent drainage and production technology, and improved sidetracking of old wells, layer inspection and rehole drilling, and reservoir depth. Techniques for tapping the potential of remaining gas between wells and layers, such as plugging removal, stimulate long-lasting vitality in increasing production in old gas fields. Currently, the sidetracking of old wells that has been implemented averages a daily gas increase of 14,000 cubic meters per well, and the cumulative gas increase since it was put into production has reached 1.15 billion cubic meters. meters, laying a solid foundation for stable gas supply during the winter peak period.
Relying on the development of digital intelligence technology and the construction of unmanned field stations, Changqing Oilfield has accelerated the on-site application of new technologies such as intelligent gas well spacing, intelligent inspection robots, optical cable vibration detection, and AI video, and has integrated more than 20,000 gas wells, 500 The production and management elements of Yuzuo Station (factory) and 30,000 kilometers of gas pipelines are "installed" into the computer, achieving 100% digital coverage of the gas field. The new "central station + unattended station" operation and management model makes production The chain of command has been shortened and the management levels have been reduced, which effectively alleviated the contradiction between the expansion of production and operation scale and the control of total employment. The organizational efficiency of supply guarantee operation in winter has been effectively improved, which has injected strong momentum into ensuring the stable supply of natural gas. (over)