摘要
方法根据砂体岩性变化及电性特征，利用测井资料、压裂分析结果，计算出不同岩性隔夹层的杨氏模量、泊松比、破裂压力等，从而选择隔夹层。目的为深层巨厚砾岩稠油油藏开发层系的划分与组合，提高油层纵向动用程度和采收率提供依据。结果该方法应用于冷４３块开发方案，有效地选择了非泥质隔夹层，将Ｅ２ｓ２３油层划分为两套层系开发，利用天然能量开采，单井初期日产油１０～１５ｔ；转注水后，非泥质隔夹层起到划分开发层系的隔层作用。结论对于巨厚砾岩稠油油藏，在泥岩隔层不发育情况下，将非泥岩隔夹层有效组合隔离段，可以实现划分层系开发。
MethodAccording to
lithology variation in sandbody and electrical characteristics, by using log information and
fracturing analysis results, interbeds with different lighology are selected after whose Young's
modulus, Poissons ratio, fracturing pressures and etc have been calculated. Purpose\ To
provide accordance for dividing and composing development layers of very thick gravel heavy
oil reservoir and for improving oil bearing formation vertical utilization percentage and
recovery. Result\ Non-shaly interbeds are successfully selected in Leng 43 fault block by
adopting this method. Oil bearing formation E\-2 s \+2\-3 is divided into two sets of development
layers and it is producing at 1015t/d each well initially with natural energy. Non-shaly interbeds
act as isolation beds even after water injection production. Conclusion\ For very thick gravel
heavy oil reservoir, if no development of shaly interbeds, development with divided layers can
be realized if non-shaly interbeds can form an effective isolation interval.\;
出处
《特种油气藏》
CAS
CSCD
1999年第1期23-26,共4页
Special Oil & Gas Reservoirs
关键词
稠油油藏
深层巨厚砾岩
隔夹层
开发层系
heavy oil
reservoir, very deep thick gravel, non-shaly interbed, divide layer series, development layer,
Liaohe oil province
