CAJ | 학술논문

储层裂缝定量预测是塔里木盆地克拉苏构造带克深2区块后期开发工作的重要保障。在对单井裂缝特征进行描述以及通过构造解析和反演拟合确定古今地应力的基础上，建立了研究区的力学模型，并结合地应力与裂缝参数之间的定量关系，对克深2区块巴什基奇克组的储层裂缝进行了数值模拟。结果显示，断层带是裂缝各项参数的高值区，背斜顶部具有裂缝线密度低而裂缝开度、裂缝孔隙度和裂缝渗透率高的特征，背斜翼部则与之相反。分析其原因认为，断层带附近裂缝密度大，沟通了单砂体，背斜高部位相对翼部裂缝密度低，但裂缝整体开度大，充填程度弱，有效性高。数值模拟结果与单井岩心裂缝、成像裂缝解释结果匹配较好，预测开发井裂缝渗透率符合率约75％，为塔里木盆地克拉苏构造带克深区块的天然气勘探与开发提供了一定依据。
저층렬봉정량예측시탑리목분지극랍소구조대극심2구괴후기개발공작적중요보장。재대단정렬봉특정진행묘술이급통과구조해석화반연의합학정고금지응력적기출상，건립료연구구적역학모형，병결합지응력여렬봉삼수지간적정량관계，대극심2구괴파십기기극조적저층렬봉진행료수치모의。결과현시，단층대시렬봉각항삼수적고치구，배사정부구유렬봉선밀도저이렬봉개도、렬봉공극도화렬봉삼투솔고적특정，배사익부칙여지상반。분석기원인인위，단층대부근렬봉밀도대，구통료단사체，배사고부위상대익부렬봉밀도저，단렬봉정체개도대，충전정도약，유효성고。수치모의결과여단정암심렬봉、성상렬봉해석결과필배교호，예측개발정렬봉삼투솔부합솔약75％，위탑리목분지극랍소구조대극심구괴적천연기감탐여개발제공료일정의거。
Quantitative prediction of reservoir fracture is an important guarantee of development in later period of Keshen-2 Block in Kelasu Structural Belt of Tarim Basin.Based on the description of single well fracture char-acter and the confirmation of paleo-and current crustal stress by structural analysis and inversion matching,me-chanical model of research area is built,and numerical simulation of reservoir fracture in Bashijiqike Formation of Keshen-2 Block is carried out combining with the quantitative relationship between crustal stress and fracture parameters.The result shows that fault belts are high value area of fracture parameters,and the top of anticline has low linear density and high aperture,porosity and permeability of fracture while the wing is on the contrary. The reason is that near fault zone the fracture where has high linear density,and the fracture communicate the single sand body.while the high position of anticline where has low linear density,high aperture,weak filling and high effectiveness.The results of numerical simulation has a better matching with single well core fracture and imaging fracture interpretation results.The prediction of fracture permeability of development well is as high as 75%,which provides a basis for the natural gas exploration and development of Keshen-2 Block in Kelasu Structural Belt of Tarim Basin.