The Barque Field, Blocks 48/13a, 48/14, UK North Sea
The Barque Field, Blocks 48/13a, 48/14, UK North Sea
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The Barque Field，区块 48/13a、48/14，英国北海
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
A. Hillier
中科院分区：
文献类型：
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作者：
R. Farmer;A. Hillier
摘要Barque油田与北海南部最早发现的一些天然气有关。在Sole Pit区域，储层（下二叠统Rotliegend Group Leman砂岩组）位于石炭纪煤系（提供天然气）和Zechstein碳酸盐岩（形成良好的密封）之间。原始风成砂岩，由于深埋的唯一坑槽，渗透率非常低。在晚白垩世和中第三纪两个主要反转阶段之前，晚白垩世早期达到了最深的埋藏，从而对储层造成了最大的成岩损害。压实和成岩作用降低了储层渗透率，如果没有有效的天然裂缝带和水力压裂技术的油井增产措施，部分油田将无法生产。虽然评估和评价相对广泛，但仍然存在的不确定性决定了与邻近的Clipper油田一起进行保守的开发。1990年10月，选定了一个初步区域，开采第一批天然气。良好的储层性能可能导致整个油田的后期开发。
Abstract The Barque Field is associated with some of the earliest gas discoveries in the southern North Sea. In the Sole Pit area the reservoir, the Rotliegend Group Leman Sandstone Formation of Lower Permian age, occurs between Carboniferous Coal Measures, which source the gas, and Zechstein evaporites which form an excellent seal. Primarily aeolian, the sandstone has very low permeability resulting from deep burial of the Sole Pit Trough. The deepest burial and hence the maximum diagenetic damage to the reservoir was achieved in the early Late Cretaceous prior to the two-fold main phases of inversion in Late Cretaceous and Mid-Tertiary. Compaction and diagenesis reduced reservoir permeability to such an extent that parts of the field would be non-productive were it not for the presence of effective natural fracture zones and well stimulation by hydraulic fracturing techniques. Though appraisal and evaluation have been relatively extensive, remaining uncertainties dictate a conservative development in conjunction with the adjacent Clipper Field. A selected initial area was developed for first gas in October 1990. Good reservoir performance may lead to later development of the whole field.