CAJ | 학술논문

油基钻井液和水平井钻完井是页岩油气井藏最主要的钻井工艺，与之相配套的地质导向技术是其达到目的的关键。焦石坝工区因勘探程度较低，地层产状预测及微小构造落实程度差等因素增加了地质导向的风险，施工中录井技术人员通过地质建模建立二维导向模型，通过井间小层对比、跟踪分析地层倾角变化进行轨迹控制及预测，使水平井储层钻遇率达到98．7％，为页岩气水平井地质导向及长水平段轨迹控制提供了借鉴。
유기찬정액화수평정찬완정시혈암유기정장최주요적찬정공예，여지상배투적지질도향기술시기체도목적적관건。초석패공구인감탐정도교저，지층산상예측급미소구조락실정도차등인소증가료지질도향적풍험，시공중록정기술인원통과지질건모건립이유도향모형，통과정간소층대비、근종분석지층경각변화진행궤적공제급예측，사수평정저층찬우솔체도98．7％，위혈암기수평정지질도향급장수평단궤적공제제공료차감。
Oil based muds and completion of horizontal wells are leading drilling technologies for shale oil-gas wells while matching geology steering technology is the key to the goal .The factors of lower level of exploration and poor prediction of formation occurrence in Jiaoshiba workzone increases geosteering risk .By building two -dimensional steering model ,controlling and predicting the trajectory based on thin layer correlation between two wells and trace analysis of the change of dip angle ,reservoir drilling ratio of horizontal wells has reached 98 .7% ,offering the refer‐ence for geosteering shale horizontal wells and controlling long horizontal wellbore trajectory .