To deal with by oil prices greatly decline caused extensive oil field cut measures operating cost situation, our company actively promote technological innovation, the efficiency for the purpose, to the high-pressure water injection as the goal, independent research and development of a single stage intelligent acid fluid system. With single-stage slug acid system to replace the current domestic high-pressure owe injector preflush acid defuse plugging operation use, handling, rear liquid, displacement fluid, such as complex acid system, and independent research and development of a set of online injection process, the acid with the injected water with note, simplifies the liquid injection process, reduces the complexity of the construction, reduce the construction cost, save the operation time.
On May 13, 2016, Company make a success in sinopec jiangsu oilfield branch production two factory wei 2-69 Wells and injection Wells online solution plugging technology experiment , construction of 10 hours, 9 tons with single-stage acid, cumulative injection acid 32 cubic meters。After take the measures, the volume of injection Wells, by 50 cubic meters increase to 75 cubic meters, injection pressure decrease from 16mpa to 13mpa, meet the requirements of injection allocation. Using injection for later online, reduce the time of well 4 days, save operating cost about $30000.
Single stage intelligent acid system and its construction technology can also be used to cast out test card blocked solution, oil and water pipeline cleaning。On May 24, 2016 in wei 2-25 oil production well successful test solution well cast and oil pressure from before the construction of 5.5 mpa to 5 mpa, casing pressure reducing from 3.5 mpa to 2.5 mpa, save operating cost about $23000. The success of the well test show that the single stage intelligent acid system has the characteristics of low corrosion, no flowback, can shorten the construction period, reduce the labor intensity is low, improve the cast to test the success rate, keep the oilfield production normally.