|本期目录/Table of Contents|

[1]唐洪明,徐诗雨,王茜,等.克拉苏气田超致密砂岩气储层水锁损害[J].断块油气田,2017,24(04):541-545.[doi:doi:10.6056/dkyqt201704023]
 TANG Hongming,XU Shiyu,WANG Xi,et al.Water blocking damage of hyper-tight sandstone gas reservoir in Kelasu gas field[J].Fault-Block Oil and Gas Field,2017,24(04):541-545.[doi:doi:10.6056/dkyqt201704023]
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克拉苏气田超致密砂岩气储层水锁损害(PDF)
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
24
期数:
2017年04期
页码:
541-545
栏目:
开发工程
出版日期:
2017-07-18

文章信息/Info

Title:
Water blocking damage of hyper-tight sandstone gas reservoir in Kelasu gas field
文章编号:
201704023
作者:
 唐洪明12徐诗雨1王茜3王俊杰1
 (1.西南石油大学地球科学与技术学院,四川 成都 610500;2.西南石油大学油气藏地质及开发工程国家重点实验室,四川 成都 610500;
3.中国石油塔里木油田油气工程研究院,新疆 库尔勒 841000)
Author(s):
 TANG Hongming12 XU Shiyu1 WANG Xi3 WANG Junjie1
(1.School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China; 2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
3.Research Institute of Oil and Gas Engineering, Tarim Oilfield Company, PetroChina, Korla 841000, China)
关键词:
超致密砂岩气藏水锁损害评价影响因素
Keywords:
hyper-tight sandstone gas pool water blocking damage evaluation influence factor
分类号:
TE348
DOI:
doi:10.6056/dkyqt201704023
文献标志码:
A
摘要:
 超致密砂岩微米、纳米级孔喉发育且连通性差,气层具有毛细管压力高、黏土矿物含量高、含水饱和度低等特征,水锁是这类气藏重要的损害方式。现有的水锁损害评价标准存在未建立初始含水饱和度、地层水盐析、水敏伤害与水锁伤害叠加耦合、渗透率测试具有系统误差、评价不全面等问题,文中以克拉苏气田克深9井区K1bs组超致密砂岩为研究对象,利用核磁成像技术实时监测岩样毛细管自吸过程,运用高温钝化、高速离心、恒压驱替、核磁共振等手段建立该类气藏水锁损害评价方法,并据此进行室内实验,对比评价蒸馏水、质量分数8%的KCl溶液与破胶压裂液等流体对超致密砂岩气层基质的损害程度。结果表明,气层孔喉半径越小,流体黏度越大、矿化度越高,初始含水饱和度与束缚水饱和度差异越大,气层水锁损害越强。
Abstract:
Because of the poor connectivity of the hyper-tight sandstone nano-pores, the gas layer has the characteristics of high capillary pressure, high clay mineral content and low water saturation, and the water blocking is an important form of damage to this type of gas reservoir. The existing water blocking damage evaluation standard has the problems, such as the initial water saturation, formation water salting-out, water sensitive damage and water blocking damage superposition coupling, permeability test system error, incomprehensive evaluation and other issues. In this study, the K1bs Formation of hyper-tight sandstone in Keshen-9 well area was used as the research object, and the spontaneous imbibition process of the capillary was monitored by MRI technique; the damage of water blocking in the gas reservoir was evaluated by means of high temperature passivation, high speed centrifugation, constant pressure displacement and nuclear magnetic resonance. The indoor experiment was carried out to evaluate the damage degree of distilled water, 8% mass fraction potassium chloride solution and fractured fracturing fluid to the hyper-tight matrix. The results show the smaller the pore throat radius, the greater the viscosity of the fluid, the higher the degree of mineralization, the greater the difference between the initial water saturation and the irreducible water saturation, the stronger the water blocking damage.

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备注/Memo

备注/Memo:
 基金项目:国家自然科学基金项目“页岩气储层纳米尺度非均质性研究”(51674211)、
“致密气藏储层干化、提高气体渗流能力的基础研究”(51534006)
更新日期/Last Update: 2017-07-18