超深层低渗稠油油藏有效动用方法可行性研究——以垦627块为例  

Feasibility Studies on Effective Development Ways of Ultra-Deep Heavy Oil Reservoirs with Low Permeability

作　　者：王可君[1] 

机构地区：[1]中国石化胜利油田地质科学研究院

出　　处：《低渗透油气田》2013年第3期77-81,共5页

摘　　要：胜利油田深层稠油储量大、埋藏深、储层物性差，常规稠油热采开发无法实现有效动用。本次研究以垦627块为例，利用数值模拟技术，探索该类油藏有效动用方式，并进行开发技术界限优化。数值模拟结果表明：该类稠油油藏采用长水平井分段压裂技术，不仅可以改善储层的渗流条件、扩大渗流面积，而且可以直接采用冷采开发，避免了油藏压力大、注蒸汽困难的问题。针对于垦627油藏条件，预测采用水平段长度在500m的情况下，裂缝间距为100m，半缝长为70m的压裂方案实施效果最好。同时简要介绍了冷采后进一步提高采收率的方法和相关配套工艺技术。Deep heavy oil reservoirs in Shengli Oilflied are deep hurled with large reserves but poor reservoir properties. Conventional development of thermal recovery of heavy oil cannot achieve effective utilization of such reserves. Taking the Well Ken627 as an example, the authors search for effective production methods, and optimize the technical boundaries by using numerical simulation. The numerieal simulalion resuhs show lhat the applicalion of long horizontal well inlerval muhi-stage fraetaring technology to lhis kind of heavy oil reservoirs can not only improve the percolation area in the reservoirs, but ean adopt the conventional recovery mode, thus avoid the problems of high reservoir pressure and steam injection difficulty. In view of the reservoir conditions in Well Ken627, it could get the best implementation result by prediction when Ihe following scheme of fracturing is adopted： the length of horizontal section is 500 m, the crack spacing is 100 m, and fissure half-length is 70 m. At the same time＋ the paper also introduces the further EOR method alter the conventional reeovery and related supporting technologies.

关 键 词：超深层 低渗透 开发方式 压裂 数值模拟 

分 类 号：TE345[石油与天然气工程—油气田开发工程]