滩海油田开发初期的地质建模研究

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 in early development of offshore oilfield

Geological modeling is the basis work of oilfield development.Because of offshore oilfield's special 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 proposed 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 inversion 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 direction can be used to guide drilling wells in complex structure wells.By using this modeling method and result,the uncertainty of reservoir prediction wells and development risks,which has get great effect in practice.This modeling method provides very good reference to wide well pattern offshore development.