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PY30-1气田位于南海东部海域的珠江口盆地,已成功投产,其主力气层为韩江组SB13.8、SB15.5和珠江组MFS18.5层。为了增产降低储层风险,选择斯伦贝谢公司的随钻测井仪器geo-VISION(GVR)和adnVISION(ADN)进行水平井钻探,获得丰富的地质信息。A01H通过GVR图像解释,结合其他资料解释钻遇一正断层;A03H井通过GVR图像观察到钻井诱导缝和高导缝的存在,进行该井井旁地应力和裂缝分析,与地震蚂蚁追踪数据体分析相结合,解释水平段发生大量泥浆漏失的原因是由于天然裂缝的存在。根据已钻的井取得的成果和经验,及时调整其他6口水平井井轨迹,降低钻井风险,确保高的储层钻遇率。
The PY30-1 gas field has been successfully put into operation in the Pearl River Mouth Basin in the eastern South China Sea. Its main gas layer is SB13.8, SB15.5 of Hanjiang Formation and MFS18.5 of Pearl River Formation. In order to increase production and reduce reservoir risk, Schlumberger logging-by-drilling tools geo-VISION (GVR) and adnVISION (ADN) were selected for horizontal well drilling to obtain rich geological information. A01H through the GVR image interpretation, combined with other data interpretation drilling a normal fault; A03H well through the GVR images observed the existence of drilling induced joints and high-conductivity fracture, the well underground stress and fracture analysis, and seismic ant tracking data body The analysis combined with the explanation of the large amount of mud loss occurred in the horizontal section is due to the existence of natural cracks. Based on the achievements and experiences gained from the drilled wells, the other 6 horizontal well trajectories were adjusted in time to reduce drilling risk and ensure high reservoir drilling rate.