CAJ | 학술논문

砂岩储集层水淹层评价一直是困扰油田开发工作者的一个难题，应用地化录井资料开展水淹层评价是储层地球化学研究的一个新领域，可为油田二次开发寻找剩余油开辟新的途径。在深入分析油层水淹机理的基础上，从岩石热解和气相色谱实验入手，结合密闭取芯井资料，通过计算孔隙度、含油饱和度、驱油效率等评价参数，建立砂岩储集层水淹层评价模型和解释图版，形成一套具有适用性的定量计算和定性识别相结合砂岩储集层水淹层评价方法。应用该方法，对A盆地B油田C区D层砂岩储层进行了7口井水淹层评价，结果表明，利用地化录井方法评价砂岩水淹层，经试油结果验证，符合程度较高，达到95%以上，说明该方法适用性强，为油田开发中后期挖潜方案的调整和采收率的提高奠定了基础。
사암저집층수엄층평개일직시곤우유전개발공작자적일개난제，응용지화록정자료개전수엄층평개시저층지구화학연구적일개신영역，가위유전이차개발심조잉여유개벽신적도경。재심입분석유층수엄궤리적기출상，종암석열해화기상색보실험입수，결합밀폐취심정자료，통과계산공극도、함유포화도、구유효솔등평개삼수，건립사암저집층수엄층평개모형화해석도판，형성일투구유괄용성적정량계산화정성식별상결합사암저집층수엄층평개방법。응용해방법，대A분지B유전C구D층사암저층진행료7구정수엄층평개，결과표명，이용지화록정방법평개사암수엄층，경시유결과험증，부합정도교고，체도95%이상，설명해방법괄용성강，위유전개발중후기알잠방안적조정화채수솔적제고전정료기출。
Evaluation on water flooded layer in the sandstone reservoir is a complex and difficult problem which has persecuted oilfield workers for many years. It is a new field of geochemical investigation for evaluating waterflooded layer by geochemical logging,which may be an effective and new way for finding residual oil in the secondary development stage. Based on the depth analysis on the mechanism of the watered-out oil layer,gas chromatogram,pyrolysis chromatography and coring data, the evaluation model of waterflooded layer and interpretation chart are established by calculating the parameter of porosity,oil saturation,oil displacement efficiency,and so on,which provides the quantitative calculation and qualitative identification for the evaluation method of waterflooded layer in the sandstone reservoir. The method is applied in the D group of C area in B Field of A Basin. The result indicates that the effectiveness is very great,with the agreement rate of 95percent compared with the result of well testing interpretation. The study revealed that the chemical logging method is applicable with great utilization value,which lay the foundation for the scheme adjustment and the enhancing oil recovery of the oilfield in the mid-late period of oilfield development.