大庆葡萄花油田化学吞吐激活低产井

Core Viewpoint - The application of chemical flooding technology at the Daqing Grape Flower Oilfield has significantly improved oil production from low-yield wells, with initial daily production increasing by 114.9% compared to pre-experiment levels [1] Group 1: Technology and Implementation - Chemical flooding technology involves injecting a formulated solvent into the formation to enhance energy, improve permeability, and reduce oil viscosity, thereby increasing oil recovery rates [1] - The solvent used in this technology primarily consists of surfactants, which, when injected, generate foam under shear force from surface pumps, effectively expanding the affected volume and replenishing formation energy [1] Group 2: Results and Performance - As of April 15, the first batch of four experimental wells achieved an average initial daily oil production of 1.9 tons, with a total cumulative increase of 468.5 tons [1] - The T20-4 well, an early adopter of the chemical flooding technology, has seen its daily production restored to 1.9 tons, marking an increase of 111.1% and a cumulative oil increase of 138.6 tons [1] Group 3: Advantages of Chemical Flooding Technology - The chemical properties of the solvent used in chemical flooding are stable and do not react with formation rocks, ensuring no damage to the reservoir [1] - The technology shows high adaptability with minimal impact from temperature, pressure, acid, and alkali, making it suitable for various reservoir conditions [1]