歡喜嶺下臺(tái)階非常規(guī)油氣藏勘探潛力評(píng)價(jià)
[Abstract]:The fourth member of Huan95 block in the lower steps of Huanxiling Oilfield is one of the relatively low development blocks in the oilfield. The fourth member of the formation is buried deep and the reservoir physical property is poor. In the early stage of exploration and development, part of the exploration wells are developed back to the upper layer only after testing, and most of the exploration wells and development wells have not even been drilled or drilled through this layer, which can even be said to be basically unknown. Therefore, it is urgent to clarify its geological characteristics and its exploration potential to meet the needs of development adjustment. Based on seismic data and logging data, the paper takes Huan95 block of lower steps of Huanxiling as the research area, and focuses on fine structural interpretation for the purpose of ascertaining geological characteristics and exploration and development potential of the fourth member of Shahejie formation. Sedimentary microfacies research and exploration potential evaluation, and completion of the deployment of well site recommendations. The main subdivisions are as follows: (1) the isochronous stratigraphic framework of the fourth member of the Shahejie formation is established, and the fourth member of the Shahejie formation is reclassified and correlated. On the basis of core observation and comprehensive interpretation of logging data, a fine isochronous stratigraphic framework is established. (2) using high-resolution 3-D seismic data, combined with the re-division and accurate calibration of the horizon, The fourth member of Shahejie formation and Archaean buried hill are interpreted. (3) the sedimentary microfacies of the fourth member of Shahejie formation are studied and the provenance analysis of the fourth member of Shahejie formation is carried out. Using seismic and core data to study sedimentary filling and microfacies from large facies. (4) through seismic attribute and seismic facies study, the prediction and analysis of the unconventional reservoir development section in the fourth member of Shahejie formation are completed, and the favorable zone is finally determined. The suggestion of well location deployment is put forward. The results show that the thickness of sediment is the largest in the southeast direction of the fourth member of Sha, in which du I is thicker than du II as a whole. According to the characteristics of the wave group, the energy of the three reflectors of Tes and Tg is relatively strong, and the continuity and range are better in the whole region, and the three layers are mainly displayed as two to three phases. The main faults in the sag are extensional movement, the whole structure is monoclinic from northeast to southwest, and there are a series of normal faults in NNE and NNE direction. The whole provenance direction of the study area comes from the western 8,000 provenances from northwest to southeast. The organic matter abundance of the source rocks in the special lithologic member of the study area is relatively good and the TOC value is generally higher than 1.5. Based on the above research results, the well location deployment proposal of three wells is finally completed on the basis of the stacking map of favorable areas, which provides a favorable research idea for further exploration and development.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:P618.13
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