马井构造蓬莱镇组气藏钻井液技术探讨

DISCUSSION ON DRILLING FLUID TECHNOLOGY IN PENGLAIZHEN GROUPS GAS POOL OF MAJING STRUCTURE

马井气田地质情况复杂,地层压力异常,天然气储量丰富。已完钻井从第四系至蓬莱镇组均发生过不同程度的井漏以及井漏反吐等复杂情况,给钻井施工带来极大困难,严重制约了马井气田的开发利用。通过对马井气田蓬莱镇组储层特征、潜在损害因素以及地层地质特征进行分析。优选适合勘探开发蓬莱镇组气藏的钻井完井液类型,维护处理技术。

The downhoe geology circumstances is very complicated in Majing gas field,the formation pressure is unusual,but the reserves of natural gas is rich. Having finished some wells indicated there was seriously loss circulation or burst after loss circulation while operation from the quaternary system to Penglaizhen groups. The development of Majing gas field was restricted severely. Through analyzing the characteristic of reservoir bed, formation geologic feature, and potential formation damage factor, the optimal drilling fluids and completion fluid types suited for the development of Penglaizhen groups gas reservoir and the maintenance skills on location operation have been selected.