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Several key technologies of horizontal wells in the dense reservoir of Changqing Oilfield

Several key technologies of horizontal wells in the dense reservoir of Changqing Oilfield

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  Chinese oil network news reporter was informed that in January 3rd, Changqing oilfield oil and Gas Technology Research Institute of hydraulic research, the injection volume of fracturing string and key tools, 6 years has been in the horizontal well basin tight oil reservoirs in total 400 wells in 3628, the oil test period is shortened by 50%, single tool cost of similar foreign products only 20% provides a tool of science and technology, lowering the efficiency for horizontal wells in tight reservoir development implementation.

  Changqing Oilfield first launched a pilot test of volume fracturing in tight oil horizontal wells in China, which has achieved remarkable increase in production and also exposed the problem of low efficiency of conventional hydraulic jet tools. The beginning of 2013, Technology Research Institute of oil and gas around the riser column construction, reduce the cost of operation research, the formation of the "oil horizontal well hydraulic jet staged fracturing, multi cluster volume volume" and "gas wells coiled tubing jet fracturing" as the representative of the fracturing string and key tools, forming a "hydraulic the perforation, annular sand, mechanical anchoring, long-term isolation, pressure drag, infinite level transformation" volume fracturing technology characteristics.

  The efficient hydraulic injection volume fracturing string and key tools meet the needs of tight oil and gas volume fracturing in Changqing Oilfield, with wide application scope, low operational risk and high cost performance. At present, the technology series has been authorized to invent 7 patents and release 1 standards to reach the international advanced level.

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