Optimization and Control Techniques for Circulating Preheating Stage by Steam Assisted Gravity Drainage (SAGD) Process

Abstract

Abstract: In 2009, the steam assisted gravity drainage (SAGD) pilot areas of Zhong?32 and Zhong?37 wellblocks were successively estab?lished in Karamay Fengcheng oilfield. Based on the circulating preheating practice summary of SAGD development zone in Wellblock Zhong?32 in 2012, the circulating preheating is subdivided into four stages: wellbore preheating stage, balanced pressure?elevating stage,steady pressure stage and micro?pressure drainage stage, determining the critical nodes and criterions of each stage. Through the real?timetracking optimization and control, the interwell communication degree has improved up to 86% from 34.3%, greatly increasing the effect of the circulating preheating. Such a technology for optimization and control in circulating preheating stage of SAGD will be as a guide for its field practice in the future

CLC Number:

TE357.41

HUO JinSANG LinxiangYANG Guo, SU ChangqiangXI YizhenMA XinTONG Yubao. Optimization and Control Techniques for Circulating Preheating Stage by Steam Assisted Gravity Drainage (SAGD) Process[J]. , 2013, 34(4): 1-1.

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Optimization and Control Techniques for Circulating Preheating Stage by Steam Assisted Gravity Drainage (SAGD) Process

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