China Petroleum network news, August, Daqing oilfield in Portugal 34 tight oil development pilot area, launched the first tight oil horizontal well seam encryption transformation test.
The Portugal 34 - ping 6 well is a horizontal well evaluation well in the Putaohua 34 tight oil development test area. The well was first fractured in May 2015 and produced 22 tons of oil at the beginning of production, producing more than 1800 tons of oil.
It is the first time for inter oil tight fracturing in tight oil horizontal wells in Daqing oilfield. Technical staff to re interpret the logging data, optimum oiliness good target area, by cutting new fracturing cracks, the original 100 meters spacing shortened to 30 meters, increase joint control area on a plane, so that the original cracks between unswept regions produced. In order to make the reservoir transform more fully, the technicians selected single stage and single cluster fracturing methods. Although the fracturing method has a long construction period, it can improve the effectiveness of fracturing construction by precisely controlling the amount of added liquid and adding sand.
Portugal is the only 34 flat 6 wells of Daqing oilfield tight oil test at the same time the use of test wells network fracturing and cutting two fracturing transformation, has an important guiding significance for the subsequent fracturing parameters of tight reservoir design.
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