滩海油田开发初期的地质建模研究

Geological modeling in early development of offshore oilfield

窦松江 孙超囡 贾玉梅 陈斌

Dou Songjiang Sun Chaonan Jia Yumei Chen Bin

中国石油大港油田公司, 天津大港 300280

Dagang Oilfield, PetroChina, Tianjin 300280

地质建模是油田开发的基础性工作,由于滩海油田特殊的地理位置条件,造成钻井少,各种资料获取、采集难度大,给处于开发初期的油田带来了较大挑战。以大港滩海关家堡开发区为例,提出在前期地质概念模型的指导下,多学科综合,应用随机模拟理论,采用储层约束反演与地质建模相结合,建立储层岩性模型,并在岩性模型的控制下实现储层参数建模,通过三维地质模型的建立,提取出沿设计井轨迹方向的预测曲线成果,指导复杂结构井的钻探,利用该建模思路与成果,大大降低了井间储层预测的不确定性与开发风险,现场实施效果显著,其建模方法对于类似滩海稀井网开发提供了很好的借鉴。

Geological modeling is the basis work of oilfield development.Because of offshore oilfield's spe-cial geographical position,a few wells were drilled,bringing difficulty to gain data and great challenge to early development of oilfield.In this paper,taking Guanjiapu development area as an example,it is pro-posed that under the guidance of geology concept model,reservoir lithology model can be established by synthesizing mang disciplines,using stochastic simulation theory,combining with reservoir constraint in-version and geological modeling.Under the control of lithology model,reservoir parameter modeling can be realized.Based on the establishment of 3D geological model,prediction curves along design well track direc-tion can be used to guide drilling wells in complex structure wells.By using this modeling method and re-sult,the uncertainty of reservoir prediction wells and development risks,which has get great effect in prac-tice.This modeling method provides very good reference to wide well pattern offshore development.