Three in one activation of 'sleeping resources' in Huabei oil field

As of October 16, 253 long-term wells in Huabei Oilfield were shut down for production, with an accumulative increase of more than 30000 tons. Through the implementation of the "underground, surface and benefit" three in one initiative, Huabei Oilfield focuses on the "combination" of long shut in well recovery and evaluation of reservoir increase, production capacity construction, and reservoir management, so as to evaluate the construction and reservoir management and drive the recovery of shut-down wells, and achieve results. Based on the reservoir, the "base number" of more than 2000 long shut-in wells has been found out systematically, the production history has been analyzed, the stratigraphic correlation has been carried out, the reservoir understanding has been carried out, the reservoir recheck has been carried out, the remaining oil type of fine reservoir has been refined, and the geological potential of long shut-in well has been realized.

Scientifically deploy the recovery plan, give priority to the implementation of wells with less investment, quick effect and great potential, take into account the difficulty of surface recovery and economic benefits, and take recovery by classification, classification and batch. In 2013, lu3-36 well was shut down due to high water cut, with a cumulative oil production of 48000 tons. It was originally believed that each layer was flooded and the casing was deformed, so no treatment was carried out. This year, combined with the reservoir characteristics re analysis, for the combination of casing transformation engineering geology, well repair and potential exploration integration, calculate the benefits. After the well was overhauled and blocked water was recovered, the daily oil output was 10 tons and the stage oil output was 1100 tons.

Do a good job in combination boxing, and plan the optimization plan as a whole. Combining long-term well shut-in recovery with evaluation and reservoir increase, carrying out review of scattered wells and potential of outer surface layer, strengthening oil test and production test, providing clues for reservoir evaluation; combining with production capacity construction, driving recovery of old wells with new wells, improving well pattern, forming effective water drive; combining with reservoir management, combining with well pattern adjustment, layered management, deep displacement control and other scientific implementation, ensuring long-term well shut-in. Restore "efficiency".

Organize group warfare to ensure the implementation effect. The company organizes research institutes, engineering institutes and oil production plants to formulate plans together, and promotes the combination of plants and institutes, the integration of geological engineering, and the equal emphasis on treatment measures and later maintenance. It improves the pertinence of measures, improves the effect of implementation, and reduces the risk of large investment in long shut in recovery funds. At the same time, as an important work of "fine water injection and comprehensive treatment", the recovery of long shut in well can be realized relatively centralized recovery of production capacity while comprehensive treatment of key blocks is carried out. Follow up and evaluate the effect of recovered wells in time, optimize and promote the next batch of recovery plans, so as to gradually carry out the way of "research, implementation, verification, re optimization and re implementation" to ensure that the long-term shut-in and recovery period is extended and add energy to the stable production of the company.