天然气勘探中的哲学思维和“首尾归一”模式

通过践行邓小平同志1978年提出的"解放思想、实事求是"的思想路线,30年来四川盆地的天然气勘探工作取得了长足进展。为此,总结了在盆地西部(川西)部分气藏探明中采用的思维方法,分析了成藏理论研究中的哲学思维;认为油气藏形成的理论,应根据唯物主义的观点,随着科技的进步、实践的深入,不断补充、调整与完善;归纳概述了油气系统工程的两种思维(直线思维、曲线思维)与勘探成效的关系,重点对"首尾归一"环型模式进行了阐述:设计方案时钻井目标要明确,完井要达到希望的产能,资料应翔实、完整,未达到钻井目标应进行分析和总结。该模式的中间过程涉及物探、布孔、钻井、录井、测井、射孔、压裂、测试等多个工程技术环节,它们都需要整体部署、协调工作。

A preliminary discussion on the philosophic thinking and a "loop-model" of gas exploration

The idea of "emancipating the mind and seeking truth from facts", suggested first by Deng Xiaoping in 1978, has been implemented in gas exploration over 30 years in the Sichuan Basin, which helps achieve many gas discoveries. In this paper, the thinking that has contributed to the discoveries of some gas fields in the western Sichuan Basin is summarized, and the philosophic thinking of hydrocarbon pooling theories is analyzed. The theory of hydrocarbon pooling should be continuously developed along with the progressing of sciences and deepening of practices. This paper sums up the relationship between the two thinking modes (straight thinking and circuitous thinking) in petroleum systematic engineering and exploration effectiveness, focusing on the elaboration of a "loop model "of exploration. According to the model, a clear drilling target should be held to make a design scheme. Data should be detailed, accurate and complete to obtain the desired production capacity during well completion. Lessons should be learned from the collected experiences unless the drilling target is reached. The intermittent steps of the model involve geophysical prospecting, well emplacement, drilling, logging, perforation, fracturing and testing. All these steps should be deployed as a whole and be properly coordinated. Finally, a scientific appraisal method is presented for this "loop model".