摘要
我国中、新生代含油气盆地中存在众多的多层油气藏，常分为有层间窜流和无层间窜流两大奖。无层间窜流的多层油气藏中存在压力差异衰竭和井内窜流现象，这会使多层油气藏在开采中造成地层压力的大量损耗，从而使一些油气层的产能很快丧失。有层间窜流的多层油气藏在开采过程中，可以当作一个完整统一的油气藏（如四川威震旦系气藏），当各产层的特性差异较突出时，也可能会在某一段时间和某一局部范围内出现差异衰竭现象。因此，在多层油气藏开采中，要应用电缆式地层测试器、生产测井等技术，并结合试井、地质及裸眼井测井等资料，掌握各分层的动态参数，从而达到合理开发多层油气藏的目的。
he multilayered oil-gas reservoirs in Mesozoic and Cenozoic oil-gas bearing basins are often divided into the two types of crossflow and non-crossflow. The phenomena of pressure-differential depletion and borehole crossflow existing in the multilayered oil-gas reservoir without crossflow will cause a large loss of formation pressure in the production course of multilayered oil-gas reservoir, with the result that some oil-gas formations quickly lose productivity. The multilayered oil-gas reservoir with crossflow can be developed as a complete one(Weiyuan Sinian gas field in Sichuan is an example) in which the differential depletion phenomenon in a part of range maybe appears at some stage while the characteristics are very different in the productive formations. So,cable formation tester, the techlonogies of production logging should be used combining the data of well testing, geology and open-hole logging,grasping the dynamic parameters of different formations to rationally develop the multilayered oil-gas reservoirs.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1994年第2期30-34,共5页
Natural Gas Industry
关键词
油气藏
储集层
非均质油藏
multilayered oil-gas field, development, logging, testing, cognition.
