摘要
寨子河油区长6油层含水较高,经前期治理后,产能虽有短暂回升,但含水率很快上升,因而亟须搞清来水方向、裂缝规模、分布以及水驱效果情况等问题。针对该区长6油层注采对应性差、采油效率低等问题,通过对裂缝分布规律探讨、油层水淹模式分析、裂缝对水驱效果研究,结果表明:(1)寨子河油区长6油层裂缝走向集中在北东东—南西西向;(2)长6油层平面水淹优势方向为SW45°-SW75°;(3)长6低渗透油层压裂半缝长控制在100~110m之间可以取得较好的油井产量和经济效益。以上成果认识,对提高寨子河油区长6油层水驱动开发效果具有重要指导作用。
Chang-6 oil layer in Zhaizihe oil area is high in water.After the early treatment,although the production capacity has a short recovery,the water is rapidly rising.Therefore,it is urgent to make clear the direction of coming water,the scale and distribution of the cracks,and the effect of water drive.In the light of the problems of poor correspondence of injection and production and low efficiency of oil production in Chang-6 oil layer,after discussing the distribution law of cracks,analyzing the model of water flooded and studying the influence of cracks on the water flooding effect,the following conclusions were drawn:①The fracture strike of Chang-6 oil layer is concentrated in the north east east-south west west direction.②The plane flooding dominant direction of Chang-6 oil layer is SW45°-SW75°.③To control the fracturing half seam length of Chang-6 oil layer between 100~110 m can obtain good oil production and economic benefit.The understanding of the above results has an important guiding role in improving the water driven development effect of the Chang-6 oil layer in the Zhaizihe oil area.
作者
杨娟娟
张品
齐宏鹏
李炜
Yang Juanjuan;Zhang Pin;Qi Hongpeng;Li Wei(Wuqi oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yan'an,Shaanxi 717600,China)
出处
《非常规油气》
2018年第2期65-70,共6页
Unconventional Oil & Gas
关键词
裂缝分布
水驱效果
压裂半缝长
寨子河油区
fracture distribution
water drive effect
fracturing half length
Zhaizihe oil area
作者简介
第一作者简介:杨娟娟(1978—),女,本科,工程师,主要从事石油工程方面的研究工作。邮箱:263369131@qq.com.
