油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2014年
6期
71-74
,共4页
压裂%微地震%地面监测%页岩气
壓裂%微地震%地麵鑑測%頁巖氣
압렬%미지진%지면감측%혈암기
fracturing%microseismic%surface monitoring%shale gas
水力压裂是页岩气储层改造的重要手段，压裂时岩石破裂过程会伴随产生强度较弱的“微地震”波。地面微地震监测技术即在地面布设检波器排列对压裂作业进行实时监测，具有施工方便、监测方位角度大的优点。在威远构造H井进行水力压裂时，应用基于偏移叠加的四维能量聚焦地面微地震成像技术，提高了弱信号识别能力和定位精度，准确描述了压裂诱导裂缝的位置、方位和大小及复杂程度，指导了实时压裂和压裂效果评价。
水力壓裂是頁巖氣儲層改造的重要手段，壓裂時巖石破裂過程會伴隨產生彊度較弱的“微地震”波。地麵微地震鑑測技術即在地麵佈設檢波器排列對壓裂作業進行實時鑑測，具有施工方便、鑑測方位角度大的優點。在威遠構造H井進行水力壓裂時，應用基于偏移疊加的四維能量聚焦地麵微地震成像技術，提高瞭弱信號識彆能力和定位精度，準確描述瞭壓裂誘導裂縫的位置、方位和大小及複雜程度，指導瞭實時壓裂和壓裂效果評價。
수력압렬시혈암기저층개조적중요수단，압렬시암석파렬과정회반수산생강도교약적“미지진”파。지면미지진감측기술즉재지면포설검파기배렬대압렬작업진행실시감측，구유시공방편、감측방위각도대적우점。재위원구조H정진행수력압렬시，응용기우편이첩가적사유능량취초지면미지진성상기술，제고료약신호식별능력화정위정도，준학묘술료압렬유도렬봉적위치、방위화대소급복잡정도，지도료실시압렬화압렬효과평개。
Hydraulic fracturing is an important means of shale gas reservoir reconstruction. When fracturing, rock failure process generates microseismic wave. With the advantages of convenient construction and wide azimuth acquisition, surface microseismic monitoring technology monitors fracturing operation in real time by layout of surface geophones. During hydraulic fracturing of well-H in Weiyuan structure, the application of microseismic image technology, which based on stacking migration four dimensional en?ergy focused principle improved weak signal recognition ability and location accuracy, accurately described induced fracture fea?tures, such as location, azimuth, size and complexity, thereby having a guiding significance for real time fracturing and fracturing ef?fects evaluation.
