模糊物元分析方法在潜山储层有效性评价中的应用  

Application of fuzzy matter-element analysis method to evaluation of reservoir effectiveness in buried hills

作　　者：张文颖 袁胜斌 刘畅 ZHANG Wenying;YUAN Shengbin;LIU Chang(China France Bohai Geoservices Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]中法渤海地质服务有限公司

出　　处：《录井工程》2024年第3期45-51,共7页Mud Logging Engineering

摘　　要：海洋勘探中潜山油气藏勘探技术的提高和突破,对录井在储层有效性评价方面提出更高标准的需求——潜山储层解释评价精细化和定量化。潜山储层的地质录井解释评价也面临数据多样化而使定性评价难度增大的问题,目前储层可靠性评估手段无法实现将多个地质录井数据降维,采用模糊物元分析法对气测录井、三维定量荧光录井、元素录井、衍射录井等多参数进行融合评价,可将多维降至一维,综合评价储层的物性和含油气性;依据工程录井参数的机械比能、机械比能基值引入孔缝指数,用其表征潜山储层的物性;最终通过模糊物元的综合评价指标和孔缝指数交会,将储层有效性的标准定量化,给潜山储层有效性评价提供一种新的方法。将该评价方法在某区块新钻井进行应用,取得了较好的应用效果。The improvement and breakthrough of the exploration technology of buried hill oil-gas pool in marine exploration put forward higher requirements for mud logging in reservoir effectiveness evaluation,that is,the buried hill reservoir interpretation and evaluation are fine and quantified.The geological logging interpretation and evaluation of buried hill reservoirs also faces the problem of increasing the difficulty of qualitative evaluation due to the diversity of data.Currently,reservoir reliability assessment methods cannot achieve dimensionality reduction of multiple geological logging data.The fuzzy matter-element analysis method is used to conduct fusion evaluation of multiple parameters from gas logging,threedimensional quantitative fluorescence logging,element logging,diffraction logging,etc.,which can reduce the multidimensional to the one-dimensional and comprehensively evaluate the physical properties and oil-gas potential of the reservoirs.According to the mechanical specific energy and mechanical specific energy base values of engineering logging parameters,the vuggy-fracture index is introduced to characterize the physical properties of buried hill reservoirs.Finally,the standards of reservoir effectiveness are quantified by intersecting the comprehensive evaluation indicator of the fuzzy matter-element and the vuggy-fracture index,which provides a new method for reservoir effectiveness evaluation in buried hills.The application of this evaluation method in new drilling wells in a certain block has obtained good results.

关 键 词：多元录井 潜山储层有效性 孔缝指数 评价指标 模糊物元分析 

分 类 号：TE132.1[石油与天然气工程—油气勘探]