CAJ | 학술논문

采用真三轴岩土工程模型试验机、压裂泵伺服控制系统、Disp声发射三维空间定位技术、试验前后工业CT扫描水力压裂缝扩展形态的方法，建立一套页岩水力压裂物理模拟与压裂缝表征方法。由页岩水力压裂物理模拟试验可得：(1)采用Disp声发射八探头三维空间定位监测方法，能实时有效地监测水力压裂缝的起裂位置；(2)采用水力压裂后追踪红色示踪剂痕迹的方式，可实现水力压裂缝的空间形态描述；(3)当水力压裂未形成沿天然层理面的贯通压裂缝时，易形成与天然层理面相交的压裂缝，并与层理面开裂后交叉形成网络裂缝。建立的页岩水力压裂物理模拟试验与表征方法，可进行页岩压裂施工参数的优化设计，为页岩气储层水力压裂开采提供技术支持。
채용진삼축암토공정모형시험궤、압렬빙사복공제계통、Disp성발사삼유공간정위기술、시험전후공업CT소묘수력압렬봉확전형태적방법，건립일투혈암수력압렬물리모의여압렬봉표정방법。유혈암수력압렬물리모의시험가득：(1)채용Disp성발사팔탐두삼유공간정위감측방법，능실시유효지감측수력압렬봉적기렬위치；(2)채용수력압렬후추종홍색시종제흔적적방식，가실현수력압렬봉적공간형태묘술；(3)당수력압렬미형성연천연층리면적관통압렬봉시，역형성여천연층리면상교적압렬봉，병여층리면개렬후교차형성망락렬봉。건립적혈암수력압렬물리모의시험여표정방법，가진행혈암압렬시공삼수적우화설계，위혈암기저층수력압렬개채제공기술지지。
In order to study the hydraulic fracture and crack shape,the large real triaxial simulation experimental system,servo control system of hydraulic fracturing equipment,Disp acoustic emission(AE) three-dimensional orientation technique and CT scanning technique are applied;and the hydraulic fracturing physical simulation testing method and the characterization methods of hydraulic fracture have been established. According to the test,some conclusions are drawn as follows. (1) Using 8 transducers acoustic emission(AE) sources orientation technique,starting-crack pressure and the direction of hydraulic fracture can be monitored continuously. (2) Adding a red tracer into fracturing fluid and parting the sample can describe the spatial morphology of the hydraulic fracturing. (3) When the hydraulically created fracture extended is not along the natural bedding plane, it can easy to form the network crack. The physical simulation and characterization methods of hydraulic fracturing can be used for optimization design,so as to provide technical service for shale gas exploiting.