CAJ | 학술논문

页岩油气资源评价过程中除需对页岩作为烃源岩的特征进行评价外，更重要的是对其储层特征进行评价，尤其是可压裂性和含气性评价，直接涉及到资源的可动性。基于松辽盆地梨树断陷苏家屯地区苏2井营一段泥页岩系统取心和分析测试结果，开展了泥页岩生烃潜力评价、可压裂性及含气性评价。结果显示该区营一段泥页岩具备较好的页岩气生成条件。泥页岩脆性矿物含量高、杨氏模量高、泊松比低，压裂条件有利；孔隙度和渗透率普遍较低，但发育大量的天然裂缝和微裂缝，且压裂过程中容易产生形态较为单一的垂直裂缝，镜下还见到大量的微—纳米孔隙，主要以微孔和中孔为主，为页岩气提供了有利的运移通道和储集空间。该区多口探井在钻、测、录井的过程中均在营一段见到了良好的油气显示，并试获了高产气流，现场解吸显示泥页岩平均含气量达2．5 m3／t，显示出良好的资源规模及勘探开发前景。
혈암유기자원평개과정중제수대혈암작위경원암적특정진행평개외，경중요적시대기저층특정진행평개，우기시가압렬성화함기성평개，직접섭급도자원적가동성。기우송료분지리수단함소가둔지구소2정영일단니혈암계통취심화분석측시결과，개전료니혈암생경잠력평개、가압렬성급함기성평개。결과현시해구영일단니혈암구비교호적혈암기생성조건。니혈암취성광물함량고、양씨모량고、박송비저，압렬조건유리；공극도화삼투솔보편교저，단발육대량적천연렬봉화미렬봉，차압렬과정중용역산생형태교위단일적수직렬봉，경하환견도대량적미—납미공극，주요이미공화중공위주，위혈암기제공료유리적운이통도화저집공간。해구다구탐정재찬、측、록정적과정중균재영일단견도료량호적유기현시，병시획료고산기류，현장해흡현시니혈암평균함기량체2．5 m3／t，현시출량호적자원규모급감탐개발전경。
In addition to the characteristics of source rocks, we should pay more attention to the evaluation of reservoir characteristics in shale oil and shale gas resource assessment, especially evaluation of fracturing and gas content which are directly involved in the mobility of resources. In this paper, we studied the hydrocarbon generation potential of mud shale as well as the fracturing properties and gas content on the basis of test results from the first member of Yingcheng Formation in well Su2 in the Sujiatun area of the Lishu Fault Depression. The results show that the mud shale from the first member of Yingcheng Formation have good shale gas generating conditions in this area. High content of brittle minerals, high Young’ s modulus and low Poisson’ s ratio make the mud shale easy to crack. The porosity and permeability of the mud shale are generally low, but there are a lot of natural fractures and micro?frac?tures;as well single vertical cracks are prone to form during the fracturing process. Beyond that, there are a lot of micro?nanometer pores under the electron microscope, mainly micropores and mesopores. All of these different scales of fractures and the availability of pores provide a favorable migration pathway and storage space for shale gas. During drilling, measurements and logging in the first member of Yingcheng Formation, many wells have shown a large amount of oil and gas; meanwhile, high?yield gas flows were obtained in wells Su2 and Li2. Field desorption tests showed that the averaged shale gas content in the first member of Yingcheng Formation in well Su2 is 2. 5 m3/t, representing a considerable resource and a good exploration and development prospect.