CAJ | 학술논문

确定地层破裂压力和水力压裂裂缝延伸几何形态,对于设计合理的压裂方案、提供合理的压裂施工压力、避免压裂裂缝高度过高导致地层间的层间窜漏、更好地达到改善储层的目的至关重要.针对LG地区碳酸盐岩气藏特点,介绍了用测井资料预测地层破裂压力和裂缝高度的基本原理和方法,并选择LG地区5口井的测井资料进行了地层破裂压力和裂缝高度预测处理.结果表明:LG地区地层破裂压力测井计算方法和裂缝高度预测方法合理,为LG地区碳酸盐岩储层改造提供的施工参数较为可靠;在LG地区某井长兴组综合运用地层破裂压力和裂缝高度预测结果优选了试油层位,获得了日产百万立方米的高产天然气,取得了较大的经济效益和较好的应用效果.
학정지층파렬압력화수력압렬렬봉연신궤하형태,대우설계합리적압렬방안、제공합리적압렬시공압력、피면압렬렬봉고도과고도치지층간적층간찬루、경호지체도개선저층적목적지관중요.침대LG지구탄산염암기장특점,개소료용측정자료예측지층파렬압력화렬봉고도적기본원리화방법,병선택LG지구5구정적측정자료진행료지층파렬압력화렬봉고도예측처리.결과표명:LG지구지층파렬압력측정계산방법화렬봉고도예측방법합리,위LG지구탄산염암저층개조제공적시공삼수교위가고;재LG지구모정장흥조종합운용지층파렬압력화렬봉고도예측결과우선료시유층위,획득료일산백만립방미적고산천연기,취득료교대적경제효익화교호적응용효과.
The determination of formation fracture pressure and the geometry of hydraulic fracture is critical for designing rational fracturing program, providing optimal operation pressure, avoiding interzonal cross-flow caused by excessive fracture height, and better stimulating the reservoirs. In view of the characteristics of the carbonate gas reservoirs in the LG area, we introduced the basic principles and methods of predicting formation fracture pressure and fracture height with logging data, and selected the logging data of 5 wells in the LG area for predicting the formation fracture pressure and fracture height. The results show that the calculation methods of formation fracture pressure and the prediction methods of fracture height are rational and suitable for use in the LG area and the operation parameters selected for stimulation of the carbonate reservoirs are reliable. The predicted formation fracture pressure and fracture height are used to optimize the oil test layers for the well X in LG area, and high gas flow rate over one million cubic meters per day is tested in this well.