渤海油藏高渗透层封堵剂组成优化及其影响因素实验研究  

Experimental study on the composition optimization of plugging agents and its influencing factors for highly permeable layers of Bohai Oilfield

作　　者：王婷婷[1] 卢祥国[1] 潘赫[1] 陈阳 刘进祥[1] 吴晗 张云宝[1,2] 夏欢 WANG Tingting;LU Xiangguo;PAN He;CHEN Yang;LIU Jinxiang;WU Han;ZHANG Yunbao;XIA Huan(Key Laboratory of Enhanced Oil and Gas Recovery,Ministry of Education,Northeast Petroleum University,Daqing City,Heilongjiang Province,163318,China;Tianjin Branch Company,CNOOC Ltd.,Tianjin City,300450,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]中海石油(中国)有限公司天津分公司,天津300450

出　　处：《油气地质与采收率》2018年第6期114-119,共6页Petroleum Geology and Recovery Efficiency

基　　金：国家"十三五"科技重大专项"渤海双高油田多级窜逸堵/调/驱一体化技术研究及示范"(2016ZX05058-003-010)

摘　　要：因海上油田具有渗透率较高且大孔道发育的特点,常规封堵剂难以满足其优势通道封堵技术经济要求。为解决该问题并能对渤海油藏高渗透层进行有效封堵,以渤海油藏储层特征及流体性质为基础,以化学分析、物理模拟、仪器检测为技术手段,以油藏工程和无机化学为理论指导,在油藏温度条件下开展了封堵剂组成优化及其影响因素实验研究。结果表明,从封堵剂固化时间、酸溶性和抗压强度等方面考虑,推荐固化剂为NaOH,增粘剂为无机增粘剂,缓凝剂为复合缓凝剂。在固化剂、增粘剂、缓凝剂和主剂等组分中,缓凝剂对封堵剂固化时间影响较明显。缓凝剂质量分数为0.1%~0.5%时,固化时间为5.5~480 h且可调节。Due to the high permeability and the development of high-capacity channels in offshore oilfields,it is difficult for the conventional plugging agents to meet the technical and economic requirements of plugging.In order to solve this problem and plug the highly permeable layers effectively,the composition of plugging agent was optimized and its influencing factors were studied through experiments under the reservoir temperature condition based on the reservoir characteristics and fluid properties of Bohai Oilfield.Physical simulation and instrument testing was done theoretically guided by inorganic chemistry and reservoir engineering.Considering the curing time,the acid solubility and the compressive strength of the plugging agent,NaOH,inorganic tackifier and compound retarder were recommended as the best choice for the curing agent,the tackifier and the retarder.The influence of retarder on the curing time of the plugging agent is the most obvious compared with the components of tackifier,curing agent,retarder and main agent.When the concentration of retarder is from 0.1%to 0.5%,the curing time ranges from 5.5 hours to 480 hours.

关 键 词：渤海油藏 高渗透层 封堵剂 影响因素 组成优化 

分 类 号：TE345[石油与天然气工程—油气田开发工程]