Innovative Application of Autonomize Fracturing Packer in Bohai Oilfield
At present,the demand for the development and exploitation of low permeability reservoirs in Bohai Oilfield is increasing,and the demand for the layered fracturing technology is increasing year by year.After the rough exploration of"Y Series","K Series"and supporting fracturing tools,the low permeability fracturing in Bohai old wells has formed the fracturing technology of"one trip multi-layer drag".The target layer of low permeability fracturing wells has a large longitudinal span,deep burial depth and strong heterogeneity.The conventional pressure difference seat packer is easy to be stuck in sand,and the tug fracturing operation window is tight,and the cost is high.The conventional"one trip multi-layer ball-throwing"layered fracturing pipe can not meet the demand of field operation;the"one trip multi-layer drag"fracturing tool is not domestic,and the operation cost is high and the universality is poor.After improving the key points,the fracturing tools such as the autonomize fracturing packer with high temperature resistance and stable performance have been successfully developed and applied in the field,and achieved good effects.It has solved the problems of non-domestic fracturing tools,high cost and poor universality,greatly saving the construction period and cost,and opening up a new situation for the subsequent low permeability fracturing operation.The autonomize fracturing packer has the characteristics of high safety performance,high operation efficiency,easy operation and low cost,and has a very broad application prospect.
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