CONDITIONS OF COLD PRODUCTION TECHNOLOGY FOR HEAVY OIL

Sun Laixi; Fu Weidong; Dong Wenlong; Zhao Yu; Zhou Hui; Chen Xiaoxi

doi:10.11743/ogg20010420

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CONDITIONS OF COLD PRODUCTION TECHNOLOGY FOR HEAVY OIL
Vol. 22, Issue 4, Pages: 378-381(2001)
Online First：25 December 2001，

Published：2001
DOI： 10.11743/ogg20010420
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DOI：

Sun Laixi, Fu Weidong, Dong Wenlong, et al. CONDITIONS OF COLD PRODUCTION TECHNOLOGY FOR HEAVY OIL[J]. 2001, 22(4): 378-381. DOI： 10.11743/ogg20010420.

摘要

稠油油藏能否适宜出砂冷采

主要取决于油藏能否形成蚯蚓洞网和泡沫油

这与储层、原油及开采条件密切相关.国外研究成果和河南新庄油田的开采实践表明:泥质含量小于10%

少或无钙质胶结的疏松储层及粒径小于2 mm的半胶结砂岩储层可进行出砂冷采;压力在2.0～6.0 MPa

粘度为500～50 000 mPa·s

厚度大于5 m

溶解气含气在10 m

/t左右的油层也可考虑用此方法开采;另外

出砂冷采宜从油藏中心展开

尽量远离边水和气顶(

200 m).

Abstract

Based on field information

the reservoirs

which are suitable to cold recovery

are those whose formation are loose

gravel content is low

dead oil viscosity is 500～50 000 mPa.s

solution gas concentration in crude oil is about 10 m

reservoir pressure is higher than 2 MPa

formation depth is 200～1 000 m.The effects of edge water and gas cap distribution on cold recovery of heavy oil are great

which are important factors to deploy oil wells and determine perforation interval and discharge capacity.This techique has extensive adaptability in such reservoirs as loose sandstone with solution gas.It is very important for the deployment of this technique to make clear the effects of geologic factors on cold recovery and establish relevant technical tactics.