海上探井深层碳酸盐岩酸压测试工艺研究与应用

Research and Application of Acid Fracturing Testing Technology for Deep Carbonate Rocks in Offshore Exploration Wells

随着海上勘探的不断深入,越来越多的深层低渗碳酸盐岩油藏被发现,这些油气藏经常规DST测试,大多无自然产能或自然产能较低,严重制约储层评价,亟需储层改造。文章结合渤海深层碳酸盐岩油藏的特点,兼顾测试与酸压改造,分析了该类储层酸压改造的难点,制定了适合海上探井深层碳酸盐岩储层酸压测试工艺,并且成功进行了应用,为后续渤海深层碳酸盐岩油藏的有效开发提供可靠的技术支持。

With the deepening of offshore exploration,more and deeper low-permeability carbonate reservoirs have been found.After conventional DST test,most of these reservoirs have no natural productivity or low natural productivity,which seriously restricts reservoir evaluation and urgently needs reservoir reconstruction.Combined with the characteristics of deep carbonate reservoir in Bohai Sea,taking into account the test and acid fracturing transformation,this paper analyzes the difficulties of acid fracturing transformation of this kind of reservoir,formulates the acid fracturing test technology suitable for deep carbonate reservoir in offshore exploration wells,and has been successfully applied,so as to provide reliable technical support for the effective development of deep carbonate reservoir in Bohai Sea.