浅薄层稠油水平井混合气与助排剂辅助蒸汽吞吐研究.pdf

第35卷第2期
石油钻采工艺
Vol 35 NO. 2
2013年3月
OIL DRILLING &PRODUCTION TECHNOLOGY
March 2013
文章编号:1000~7393(2013)02-0106-04
浅薄层稠油水平井混合气与助排剂辅助蒸汽吞吐研究
卢川刘慧卿卢克勤孟威2佟琳郭睿2
(1.中国石油大学石油エ程教育部重点实验室,北京102249;2.中国石油华北油田分公司,河北任丘062552;
3.中国石油大庆油国分公司,累龙江大庆163712)
引用格式:卢川,刘慧卿,卢克勤,等.浅薄层稠油水平井混合气与助排剂辅助蒸汽吞吐研究[J]石油钻采工艺,2013,332)
t06-109.
摘要:为进一步研究水平井混合气(烟道气)与助排剂辅助蒸汽吞吐技术在浅薄层稠油油藏的应用,利用室内物理模拟实
验对辅助方式的驱油效率和封堵能力进行评价,并通过数値模拟方法对研究区块适合水平井混合气助排剂辅助蒸汽吞吐的地
质界限及最优参数进行限定和优化。研究结采表明,混合气助排剂辅助蒸汽驱的驱油效率比纯蒸汽驱、蒸汽助排剤驱和蒸汽氪
气助排剂驱分别高出16.2%、11.0%和8.0%。混合气助排剂综合作用形成的泡沫封堵能力优于其他輔剂。研究区块适用于该
技术的临界有效厚度随渗透率的增加而减小,临界渗透率随有效厚度的増大而增加。在确定研究区块地质界限的基础上,通过
不同的渗透率和有效厚度组合,得到适合于该区块的注入参数,即混注比、注汽强度和混合气助排剂注入量的优化图版和取值
范围。在实际区块进行了2ロ水平井的成功试验,为该技术在浅薄层稠油油藏的扩展应用提供了借鉴。
关键词:浅薄层稠油油藏;蒸汽吞吐;水平井;混合气助排剂;地质界限
中图分类号:TE345文献标识码:A
Flexibillity study of horizontal well cyclic steam simulation assisted by combination gas
and cleanup addictive for shallow-thin heavy oil reservoir
LU Chuan LIU Huiqing, LU Keqin, MENG Wei, TONG Lin', GUO Rui
1. Key Laboratory for Petroleum Engineering of the Ministry of Education, China University of Petroleum, Beijing 102249, China; 2. Huabei ilfield
Company, CNPC, Reniw 062552, China 3. Daging Oi feld Company, CNPC, Daqing 163712, China
Abstract: In order to further study the application of combination as(fuel gas )and cleanup additive as isted cyclic steam simulation
technology in shallow-thin la er hea oil reservoir, il placemen efficency and pu in capability of four assisting patterns were evalu
ated by laboratory physical simulation experimen and then the geolo cal boundary and optimum parameters of horizontal well cyclic steam
simulation assisted by combination gas and cleanup a ent adapted to the target block were defined and optimized through numerical simulation
The results how that the displacement efficiency of steam flooding assisted by combination gas and cleanup additive stays 16.2, 11.0%and
8.%higher than at of pure team floodin clean iv asis a oin an nn&eau additive assisted steam foodin
respectively. The sealin capability of foam ormed by the combinaton of as and ea aen s uperior o others. For this block, the critical
effectie thickness ofhorizontal well cyclic steam simulation assisted by combination gas and cleanup agent decreases with the increase of perm-
abili y. And the itical mmea ilit iraes s five hickness ares Based on the determination of elo ical boundary, the optimum
charts and range for mixed inje ion ratio team injection ten h and injection olume of omination gas and cleanup additive are acquired by
varying diferent permeability and ef ective thickness combination. This e hnology has been succes fully applied in two horizon al wells, which
provides a guiding role in expanding this technology in shallow-thin layer heavy oil reservoir
Key words: shallow-thin layer heavy oil reservoir cyclic steam simulation; horizontal well; combination gas and cleanup additive
:ological boundary
基金项目:国家自然科学基金“蒸汽+非凝析气热力泡沫在多孔介质中的运移及滞留机理”(编号:51104165)资助。
作者简介:卢川,1987年生。在读博士研究生,主要从事油藏数值模拟与热力采油技术方面的研究。电话:010-89731163。E-mail
ctw2106(@yahoo.com.cn