CAJ | 학술논문

在碳酸盐岩地层应用欠压实原理，会使异常压力随钻监测成为威胁钻井安全的一道难题。为了解决该类地层异常高压随钻监测理论、异常高压识别、监测模型选择等关键问题，以川东北飞仙关组和长兴组地层实测压力的纵深分布特征为基础，通过与东营凹陷碎屑岩地层压力分布特征对比，指出基于上覆压力梯度的地层压力随钻监测方法并不适用于碳酸盐岩地层。在理论探讨的基础上，从岩石成分及应力敏感性角度，解释了硫酸盐热化学还原反应和构造挤压是造成高压地层与常压地层识别标志差异的主要原因。孔隙型碳酸盐岩地层和裂缝性碳酸盐岩地层的压力演化历程不同，其监测模型也不同，为此对压力监测模型中的孔隙与裂缝识别、气层和水层识别给出了具体的区分方法。上述几个关键问题的探讨，有助于提高对碳酸盐岩地层异常压力的认识与预测监测水平。
재탄산염암지층응용흠압실원리，회사이상압력수찬감측성위위협찬정안전적일도난제。위료해결해류지층이상고압수찬감측이론、이상고압식별、감측모형선택등관건문제，이천동북비선관조화장흥조지층실측압력적종심분포특정위기출，통과여동영요함쇄설암지층압력분포특정대비，지출기우상복압력제도적지층압력수찬감측방법병불괄용우탄산염암지층。재이론탐토적기출상，종암석성분급응력민감성각도，해석료류산염열화학환원반응화구조제압시조성고압지층여상압지층식별표지차이적주요원인。공극형탄산염암지층화렬봉성탄산염암지층적압력연화역정불동，기감측모형야불동，위차대압력감측모형중적공극여렬봉식별、기층화수층식별급출료구체적구분방법。상술궤개관건문제적탐토，유조우제고대탄산염암지층이상압력적인식여예측감측수평。
Uncompaction theory is not suitable for carbonate formations ,if this theory is used in car-bonate formations ,abnormal pressure detection while drilling will be wrong ,bringing about threat to drill-ing safety .In order to solve abnormal pressure detection theory and methods ,and monitoring model selec-tion etc ,based on the comparison between the vertical distribution of test pressure data in Feixianguan and Changxing Formation in Northeastern Sichuan Basin ,and the distribution of formation pressure of clastic rocks in Dongying Sag ,it is was pointed out formation pressure detection while drilling based on the over-burden pressure gradient was not suitable for carbonate formations .It was explained that the identification marks between high pressure layer and normal pressure layer were caused by TSR reaction and tectonic compression .The pressure detection models of porous-type reservoirs and fracture-type reservoirs were dif-ferent due to different evolution course of formation pressure ,so this paper provided the methods to distin-guish porous and fracture carbonate reservoirs ,gas layers and water layers .The study above could improve the recognition of carbonate formation pressure and the level of pressure prediction and detection .