CAJ | 학술논문

裂缝性油气藏研究中,裂缝识别一直是测井解释的一个难点,常规测井方法识别裂缝的精度不能满足油气勘探开发的需求.而岩石力学参数揭示了地质历史时期裂缝成因类型、空间分布和形成的力学机理,从一定程度上反映了裂缝的发育程度.在对准噶尔盆地40块岩样进行岩石力学参数室内试验的基础上,利用弹性模量、体积模量、剪切模量等岩石力学参数来构建能够较好反映裂缝发育程度的岩石完整性系数、裂缝发育程度指标、岩石稳定系数3个计算模型,并将模型程序化,利用此3个评价指标来对火山岩的裂缝发育程度进行逐点自动处理识别.识别结果与岩心描述、成像测井对比表明.该方法能够较准确地对火山岩的裂缝进行识别且精度较高、实用性强,能满足火山岩地层裂缝测井识别精度的要求.
렬봉성유기장연구중,렬봉식별일직시측정해석적일개난점,상규측정방법식별렬봉적정도불능만족유기감탐개발적수구.이암석역학삼수게시료지질역사시기렬봉성인류형、공간분포화형성적역학궤리,종일정정도상반영료렬봉적발육정도.재대준갈이분지40괴암양진행암석역학삼수실내시험적기출상,이용탄성모량、체적모량、전절모량등암석역학삼수래구건능구교호반영렬봉발육정도적암석완정성계수、렬봉발육정도지표、암석은정계수3개계산모형,병장모형정서화,이용차3개평개지표래대화산암적렬봉발육정도진행축점자동처리식별.식별결과여암심묘술、성상측정대비표명.해방법능구교준학지대화산암적렬봉진행식별차정도교고、실용성강,능만족화산암지층렬봉측정식별정도적요구.
Identification of fractures has always been challenged in logging interpretation of fractured reservoirs. The aecura-cy of fracture identification with conventional logging techniques can not meet the requirements of exploration and development in oil and gas fields. Rock mechanical parameters can reveal the genetic types, spatial distribution and genetic mechanism of fractures in geologic history, thus can reflect, to some extent, the level of fracture development. Based on laboratory testing of rock mechanical parameters with 40 samples from the J unggar Basin, three computational models, including rock integrity coef-ficient, fracture development index, rock stability coefficient, are built up by use ofvarious mechanical parameters such as elas-tic modulus, bulk modulus and shear modulus, for which the programs are designed. These three appraisal indexes are used in point-to-point automatic identification of fractures in volcanic rocks. Comparison of the results with core description and image logging indicates that this method is highly accurate and practical and can meet the requirements of logging identification of frac-tures in volcanic rocks.