JHMD-Ⅱ智能高温高压入井流体动态损害评价系统

JHMD-Ⅱintelligent dynamic damage evaluation system for high temperature high pressure drill-in fluids.

在钻井完井过程中,钻井液完井液类型及其滤液和固相、地层温度、压差、浸泡时间等均会影响油气层损害的深度和程度。开展油气层保护研究工作,定量评价入井流体对油气层损害的深度和程度,室内需要有效的模拟评价实验仪器。JHMDⅡ智能型高温高压入井流体动态损害评价系统,就是为满足油气层保护评价实验的需要而研制出的新型仪器。该仪器能将岩心多段渗透率测试和高温高压入井流体的动态损害实验融为一体。通过用几种配方的入井流体对岩心进行动态损害和多段渗透率测试,可以定量地测定岩心受入井流体损害的深度和程度,从而优选出满足油气层保护要求的入井流体配方。该仪器体积小、精度高、功能强、效率和自动化程度高,并且可进行岩心的各种敏感性评价试验。JHMDⅡ智能高温高压入井流体动态损害评价系统能够从油气层保护方面评价和优选钻井液与完井液体系,对油气层保护研究和生产都具有指导意义。

In the drilling and completion process, drilling fluid /completion fluid type, filtrate and solid particles, formation temperature, pressure difference, and soaking time plays a role in influencing the damage depth and the damage degree respectively. To conduct oil/gas reservoir protecting research, effective simulation instruments are needed to determine the damage depth and damage degree produced by drill-in fluids quantitatively. The JHMD-Ⅱintelligent dynamic damage evaluation system was developed to satisfy above requirements. This system can integrate multi permeability measuring and dynamic damage test by high temperature high pressure drill-in fluids into one procedure. Based on tests for several drill-in fluids of different compositions, a formulation fulfilling the requirements of oil/gas reservoir protection was selected. With small size, high precision- high efficiency and high automation degree of the instrument, it may be used in all kinds of sensitivity evaluation. In addition, this system may play an important role in oil/gas reservoir protection.