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南堡油田潜山油藏埋藏较深,储层温度高。为满足深井欠平衡钻井技术要求,现场采用了抗高温水包油钻井液体系。该体系具有良好的流变性,防塌能力强,密度在0.95～0.98g/cm3之间,抗温能力达到180℃。现场应用表明,该钻井液体系具有较好的抗高温性能,对油气层损害小,有利于安全快速钻井和发现、保护油气层,性能稳定,易于调节,对录井、测井无影响,井径规则,能够满足深井欠平衡钻井和地质要求。
The buried hill reservoirs in Nanpu Oilfield are buried deeply and the reservoir temperature is high. In order to meet the technical requirements for underbalanced drilling, a high-temperature oil-in-water drilling fluid system was adopted on site. The system has good rheology, anti-collapse ability, density of 0.95 ~ 0.98g / cm3, temperature resistance up to 180 ℃. The field application shows that the drilling fluid system has better high temperature resistance, less damage to the oil and gas reservoirs, is conducive to safe and rapid drilling and discovery, protection of oil and gas layers, stable performance, easy adjustment, no impact on logging and logging, wells Diameter rules, to meet the deep well underbalanced drilling and geological requirements.