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苏里格气田东区统33—霍2区块砂体、有效砂体分布相对连续,连片性较好,但区块气水关系复杂。为明确天然气富集规律,筛选产建富集区,结合地震、地质、测井及试气资料,应用储层地震AVO含气性检测、储层精细描述、以及富集区筛选技术,开展有效储层展布、气水分布规律以及富集区筛选研究。研究认为区块盒8、山西组有效储层连片分布,为主力产气层位,盒3—盒7、本溪组、太原组有效储层分布零散,局部发育“甜点”;剖面上存在3种气水关系:顶水型、底水型及纯水型,平面上砂体主体部位以气层为主,边部气水关系相对复杂;依据富集区评价标准,筛选富集区面积××km2,依据井位优选原则,优选井位37口,其中水平井1口。
The sand bodies in the eastern part of the Sulige gas field of the S33-Huo-2 block have a relatively continuous distribution of effective sand bodies with good contiguity, but the gas-water relationship in the blocks is complex. In order to clarify the regularity of natural gas enrichment, we selected production enriched areas, combined with seismic, geological, well logging and test gas data, applied AVO gas detection in reservoir earthquakes, elaborated reservoirs and screening techniques for enrichment areas Reservoir development, gas and water distribution and enrichment area screening. The study shows that the effective reservoirs in Block 8 and Shanxi Formation are contiguous, which are the main gas production layers. The effective reservoirs of Box 3, Box 7, Benxi Formation and Taiyuan Formation are scattered and locally developed. There are three kinds of relationship between gas and water: top water type, bottom water type and pure water type. The main part of the sand body on the plane is mainly gas layer, while the gas and water relationship on the side is relatively complicated. According to the evaluation criteria of enrichment area, Area × × km2, according to the well location principle, the preferred well position 37, of which 1 horizontal well.