Stimulation technology and its application to the low-permeability reservoir in offshore fields

Stimulation technique of drilling long horizontal wells was conducted to enhance deliverability in the low-permeability reservoirs in Wenchang13-2 oil field which consisted of ZJ1-1,ZJ1-3,ZJ1-7L formations and Wenchang13-1 field which of ZJ1-4U formation.The internal hanging well slots overcome the problems of limited platform space and application of well stimulation.Flow potential was evaluated and well location was optimized while rational spacing between wells was defined.Electric pump was used to deep draw oil,which adds new reserves of more than 800×104 m3 and daily amount of 950 m3.This technique contributes useful references to the development of ZJ1-4 series in Wenchang15-1 oil field and ZH1-2 series in Wenchang14-3 oil field.Practice show that this technique is fit for the low-permeability reservoir stimulation in the offshore field.