利用HPHT井先进质谱技术表征生产层

Veronica Barrera, Jeimy Mathison, F. Flores
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摘要

a -2井的施工被认为是具有挑战性的,因为它是一口浅水的水平海上高温高压井。事实上,该井的规划目标是到达上侏罗统Kimmerdgian时代的碳酸盐岩,这是一种复杂类型和低孔隙度的轻质油油藏,因此,选择存在油的最佳层段并确定水-油接触层的位置至关重要,以避免不必要的加深,节省额外的成本。JSK地区地球化学剖面的数据解释对储层描述具有重要意义,可以及时确定远景层段,这是一项关键任务。来自岩性描述的信息被整合到地球化学剖面中,其中感兴趣的间隔与每个样品的碳氢化合物浸渍、荧光和视觉孔隙度有关。
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Characterization of Productive Zones with Data from Advanced Mass Spectrometry of HPHT Well
The construction of the A-2 well is considered challenging because it is a horizontal offshore HPHT well in shallow water. In fact, the well had a programmed target to reach the carbonatic rocks of the Upper Jurassic Kimmerdgian age, a light oil producing reservoir of complex type and low porosity, consequently, to select the best intervals with oil presence and define the location of water–oil contact was vital to avoid unnecessary deepening saving additional costs. Being the data interpretation of the geochemical profile in the JSK zone of main importance for reservoir characterization, allowing to determine prospective intervals in a timely manner as a key task. The information from the lithological description was integrated into the geochemical profiles, where intervals of interest are related to hydrocarbon impregnations, fluorescence and visual porosity of each one of the samples.
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