利用水平井技术开发低幅度底水稠油油藏

Application of horizontal well in development of heavy oil reservoir with bottom water
on low relief structure

刘成 刘丽君 贺鹗 李本维 龚晶晶

中国石油冀东油田公司，河北 唐山 063004

Jidong Oilfield Company, PetroChina, Tangshan 063004, China

G104-5断块Ng6油藏为底水稠油油藏，构造幅度低，采用定向井开发，含水上升快、产量低，效果差。水平井具有生产压差小、泄油面积大的优点，可有效延缓底水锥进，提高单井产能，是开发低幅度底水稠油油藏的有效手段。根据油藏特点建立概念模型，对水平井生产的油水运动规律进行模拟。结果表明，储层的非均质性、水平段长度、水平段位置、隔夹层发育状况、油层厚度等因素决定着底水上侵的特点。在此基础上，进行水平井整体开发优化设计，实施后取得较好效果。

Ng6 reservoir in Fault Block G104-5 is a heavy oil reservoir with bottom water, which has a low relief structure. Directional well is adopted during development and water cut rises quickly, with output low and development effect poor. Horizontal well presents the advantages of small production pressure differential and large drainage area, which can efficiently put off the bottom water coning and can improve the single well productivity. It is an effective method to develop the heavy oil reservoir with bottom water on low relief structure. Concept model is set up according to reservoir characteristics and movement rule of oil and water is simulated for horizontal well production. The result shows that the features of bottom water coning are controlled by reservoir heterogeneity, length of horizontal segment, location of horizontal segment, interlayer development and thickness of pay zone. Optimal design of overall development is conducted for horizontal well and a good effect has been obtained after implementation.

10.6056/dkyqt2012z1013