井下作业过程中储层保护技术的应用

On Application of Reservoir Protection Technology in the Process of Downhole Service

冲砂洗井液漏失、水泥浆漏失和增产措施伤害是储层伤害的主要表现形式。要想对储层进行保护,可以从两个方面入手:一是强化作业入井液的管理,根据不同油藏的特点采取不同的入井液,并对其质量进行严格的规定。二是优化保护储层的作业工艺,采取适当的工艺阻止入井液与油层接触,减少漏失量,减少措施作业对储层的伤害。

Major formation damage includes the loss of flushing fluid for sand removal,the loss of cement hole and the damage by production stimulation.Efforts to protect reservoir stratum should be intensified in two ways.The first is to strengthen the control of working fluids,adopting different ones according to the feature of different reservoirs and strictly supervising over their quality.The second is to optimize formation protection technology,adopt proper process to prevent working fluid from touching oil layer and reduce leakage and damage on the reservoir.