CAJ | 학술논문

花岗岩储层特征与常规储层有较大差别，选用合适的钻井技术对降低储层损害、高效开发油田至关重要。也门KHA油田储层属于裂缝性花岗岩基底油藏，欠平衡钻井技术不仅可以克服常规钻井技术因固相侵入产生的储层污染，提高机械钻速，降低钻井液漏失，对保护油气层起到重要的作用，为此在KHA油田应用了欠平衡钻井技术，减少井漏风险，节约钻井成本；通过水平井开发，提高了裂缝钻遇率以及注水井的注入能力和采油井的单井产量；而且还有助于发现新的有效储层，增加油田储量，为油田开发部署和加密调整井提供了重要的参数，从而大幅度地提高了裂缝性花岗岩基底油藏的开发效果。
화강암저층특정여상규저층유교대차별，선용합괄적찬정기술대강저저층손해、고효개발유전지관중요。야문KHA유전저층속우렬봉성화강암기저유장，흠평형찬정기술불부가이극복상규찬정기술인고상침입산생적저층오염，제고궤계찬속，강저찬정액루실，대보호유기층기도중요적작용，위차재KHA유전응용료흠평형찬정기술，감소정루풍험，절약찬정성본；통과수평정개발，제고료렬봉찬우솔이급주수정적주입능력화채유정적단정산량；이차환유조우발현신적유효저층，증가유전저량，위유전개발부서화가밀조정정제공료중요적삼수，종이대폭도지제고료렬봉성화강암기저유장적개발효과。
The drilling technology is very important for the fractured granite basement reservoir to reduce the damage of formation and improve the production because of the large difference of lithology, physical property and other formation characteristics between granite and conventional reservoir. After the ifeld application of the fractured granite basement reservoir in KHA Field of Yemen, the unbalanced drilling can prevent the formation damage caused by the solid phase invasion, improve the penetration rate, reduce the loss of drilling lfuid and protect the hydrocarbon reservoir. It can reduce the risk of lost circulation, and save the drilling cost. The develop-ment of horizontal well can improve fracture drilling ratio, injection capacity of injection well and output of single production well. In addition, it helps to discover new effective reservoir, increase the reserve of oil ifeld and provide important parameters for oilifeld development, deployment, iniflling and adjustment of wells, thus signiifcantly improve the development effect of fractured granite base-ment reservoir.