"In 2023, the annual plan will exceed the company's plan by 3,800 tons, with a natural decrease of 9.8% and a comprehensive decrease of 6.6%, and the water cut increase rate of old wells will be -0.5%, which is controlled within the planned indicators. "This is a good achievement in the efficiency and stable production of the old oilfield of Xinmu Oil Production Plant in 2023.
With many reservoir types and complex reservoir control factors in front of us, what makes this old oilfield, which is in the stage of high water cut and high recovery, maintain its "foundation" evergreen?
Xinmu Oil Production Plant gave the "standard" answer - adhere to the economic benefits as the center, continue to carry out the "two rates" project and improve quality and efficiency, take low-cost water injection, benefit tapping potential, benefit construction and production and reservoir management as the core, solidly promote the production and efficiency improvement of old oilfields, and build a new model of benefit development, sustainable development and high-quality development.
Consolidate the foundation of water injection and optimize the efficient use of resources
The output is stable, and the development effect is the key. The plant firmly establishes the concept of reservoir management, fine reservoir understanding, focuses on adjusting the injection-production profile, assists in benefit transformation, adheres to the guidance of the demonstration area, and strives to explore the potential of the remaining oil in the old area with high water cut and the efficient production mode of the low permeability periphery. Optimize the water injection policy and improve the development efficiency. The macro water injection policy is formulated by combining dynamic and static, and the water injection capacity is continuously improved and the cycle and injection mode are continuously optimized according to the "block-well area-sand group-interval" model. In 2023, 6 blocks of water injection policies will be optimized, 132 wells will be treated with special treatment workload, and 307 periodic water injection plans will be optimized, improving the degree of water drive. Integrate and apply plugging technology to control ineffective and inefficient output. The combination of plugging and plugging was adopted, the profiles of the injection end and the production end were improved simultaneously, and 48 water shutouts were carried out, the utilization rate of water wells was increased to 94.7%, the completion rate of injection was increased to 91.9%, and the water cut increase rate of old wells was reduced to -0.5%, which helped the recovery rate to continue to increase.
Deepen the understanding of reservoirs and realize the positive pull of production capacity construction
To win the initiative of production, the help of production and construction is indispensable. Relying on the combination of plant and hospital, the plant carries out research and deployment work for the secondary development of the joint venture cooperation zone and the improvement of the well network.
Explore a new model of secondary development of return block benefits. In the face of the current situation of low production and poor efficiency of many wells in the newly returned Miao 20 block, scientific evaluation and accurate understanding should be carried out to implement the benefit resource potential of the block. On the basis of the construction and production of traditional large platforms, combined with the operation of green power isolated grids, a new mode of full-cycle injection-production production of low-permeability reservoirs is explored, so as to achieve improved oil recovery and drive a hard reduction in complete cost.
Elaborate the restoration plan of the Temple 2 block. In view of the fact that all 77 oil and water wells in Miao 2 block were shut down due to the extremely imperfect injection and production well pattern and low formation energy maintenance level, the geological characteristics of the block, the control factors of oil and water, and the distribution law of oil and water were studied, and the block restoration plan was carefully formulated and implemented.
Adhere to fracturing-led and create an efficient and long-term measure model
Focusing on the concept of "tapping potential with benefits and increasing oil with technology", the plant adheres to the "1+N" high-efficiency measures and technical system of Xinmu complex fault-block reservoirs, tests and promotes plugging and gas flooding measures, and optimizes the construction method of geological technology, and completes a total of 234 measures in 2023, with a cumulative oil increase of 25,000 tons, an effective rate of 87.7%, and an economic effective rate of 66.8%.
Promote the potential of PDNP in the western part of Mutou and carry out the re-evaluation of new temples and old wells. 55 measure wells were implemented in Mu 17 and 8-8 blocks, with 385,000 tons of geological reserves and an economic efficiency of 72.5%. In view of the remaining oil potential of Xinmiao Oilfield, the Xinmiao Oilfield was divided into awareness area and potential area, and 63 fracturing areas were monitored, 25 fracturing were completed, and the economic efficiency rate was 73%.
Promote the fracturing experience of the first 48 groups and improve the development effect of the first 60 areas. The average daily increase of a single well is 2.3 cubic meters, the daily increase of oil is 1.1 tons, the water cut is reduced by 27%, and the economic efficiency is 75%, which realizes the purpose of increasing the production of liquid extraction and improving the development effect of the well group.
Carry out cost-reduction governance and continue to promote the transformation of "two modernizations".
"In 2023, our plant will implement 613 intermittent pumping wells, and save 5.4 million kWh of electricity by dynamically optimizing the intermittent pumping start and shutdown time and cycle. At the same time, the combination of intermittent pumping system and photovoltaic power generation maximizes the output benefit. Wang Zhufeng, head of the plant's geological institute, said. In order to further improve the efficiency of production management, the plant vigorously carried out the treatment of single well tanks. According to the results of the benefit evaluation of a single well and the difficulty of bringing into the system in the region, the nearest bring-in system was formulated, so that some wells in block 29 could concentrate on pulling oil, tankers could unload the liquid nearby, and wells with overall deployment potential would be converted to mechanical oil discharge, and inefficient or inefficient wells should be transferred to fishing and oil production. In 2023, 232 households will be governed, achieving the purpose of reducing costs and increasing efficiency. At the same time, the plant has further promoted the transformation of "two modernizations", from the traditional crowd tactics to the "central duty + emergency response" model. The in-depth application of the Internet of Things, through the linkage of "man, machine and network" in oil and gas production, has realized the "two increases, three reductions and five optimizations" of the personnel position allocation of grassroots stations. Integrate video resources such as production, safety, environmental protection, and comprehensive management, and establish a video integration application platform to achieve "one click of the mouse and keyboard to control the oil area for thousands of miles".