摘要
随着油田开发技术的进步 ,水平井开采技术日臻完善 ,在生产中获得了明显的经济效益 ,特别是对底水油藏、垂直裂缝油藏、稠油和低渗透油藏。临盘油田临 2块馆二段是典型底水油藏 ,直井开发 2 0多年后已进入高含水开发后期 ,开发调整效果较差 ,底水锥进严重 ,含水上升快。在充分研究该油藏开发特征和剩余油分布规律的基础上 ,共设计了 8口水平井 ,投产后效果很好 ,初产高 ,含水低 ,大大提高了断块的采油速率 ,采收率也由 34.7%提高到 45 .4% ,平均每口井增加可采储量 3.5× 10 4 t ,相当于直井的 3倍多。图 1参 2 (熊敏摘 )
With the progress of development technique of oil field, the production technology of horizontal well is getting more and more perfect. It brings into obvious economic benefit, especially for bottom-water oil reservoir, vertical-fissure oil reservoir, heavy oil reservoir and less permeable oil reservoir.Ng_2 of Block Lin2 is a typical bottom-water oil reservoir in Linpan oil field. It has entered a high water-cut period of development, having been developed over 20 years with vertical wells. The effect of development and adjustment with vertical wells is not relatively well, as a result of bottom water coning more seriously and water-cut rising faster. Therefore, it was decided that Guan 2 bottom-water oil reservoir of Lin2 block was developed and adjusted with horizontal wells. 8 horizontal wells have been designed, on the basis of research on the characteristic of oil field development and the distribution rule of remaining oil. After putting into production, the effect is comparatively well, showing a high initial production and low water cut. Oil production rate of the fault block has greatly been increased; recovery factor has been raised from 34.7% to 45.4%. An average increases of 35,000t of recoverable reserves per well has been obtained which is equal to over 3 times of vertical well. The development effect is perfectly well. It is provided with instruct signification to the development adjustment of the similar bottom-water oil reservoir in the later period of high water cut.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2002年第3期76-77,共2页
Petroleum Exploration and Development
