CAJ | 학술논문

油田进入高含水采收期,开采的主要对象是相界面域内的束缚滞留油,此时提高原油采收率的关键在于激活迁移束缚滞留油.为认识提高原油采收率的原理及本质内涵,将开发过程的油藏动态系统看作是开放系统,在系统与环境进行物质、能量及信息的交流、转换、传输的过程中考察、分析问题;建立沿程具有等距离的测压取样孔的双层非均质模型,进行驱替水驱滞留油实验;依据油层自身的非均质性,采用循环注入方式压进不同质量分数的聚表剂溶液加水加表面活性剂溶液组合段塞体系,通过测试注入过程中沿程不同点的压力和流体样品的组分、质量分数、黏度的变化,实现局部扰动场的分析、构造与描述;引入物理化学、热力学、微观动力学等理论,突破层次概念的束缚,首次将微观分子热运动、介观分子聚集体形为及宏观物理化学现象链接起来,绘制出局部扰动场的流态图.这将提高原油采收率的研究引领到一个全新领域,具有理论创新和实践应用的双重意义.
유전진입고함수채수기,개채적주요대상시상계면역내적속박체류유,차시제고원유채수솔적관건재우격활천이속박체류유.위인식제고원유채수솔적원리급본질내함,장개발과정적유장동태계통간작시개방계통,재계통여배경진행물질、능량급신식적교류、전환、전수적과정중고찰、분석문제;건립연정구유등거리적측압취양공적쌍층비균질모형,진행구체수구체류유실험;의거유층자신적비균질성,채용순배주입방식압진불동질량분수적취표제용액가수가표면활성제용액조합단새체계,통과측시주입과정중연정불동점적압력화류체양품적조분、질량분수、점도적변화,실현국부우동장적분석、구조여묘술;인입물이화학、열역학、미관동역학등이론,돌파층차개념적속박,수차장미관분자열운동、개관분자취집체형위급굉관물이화학현상련접기래,회제출국부우동장적류태도.저장제고원유채수솔적연구인령도일개전신영역,구유이론창신화실천응용적쌍중의의.
In the period of high water cut in the field, the main developing target is irreducible resident oil in the interface domain. Therefore, the key of EOR is activating and removing irreducible resident oil. In order to understand the principle and essence of oil recovery enhancing, a dynamic system in the process of development was treated as an open system, which should be investigated and analyzed in the process of exchange, conversion and transmission of material, energy and information between the system and environment. A double-layer non-homogeneous model was established which had the equidistant pressure and sampling hole to carry out water-drive experiments. Based on reservoir heterogeneity, using cyclic injection method, a compositional slug system was injected which included surface polymer solution with different concentrations, water and surfactant solution. Through testing the pressure in different points and composition, concentration and viscosity change of fluid sample in the process of injection along the way, local disturbance field was analyzed, structured and described. The theory of physical chemistry, thermodynamics, micro-dynamics were introduced in order to break through boundary of the hierarchy concept. The theory combined the micro-thermal motion of molecules with the behavior of molecular aggregates in mesoscopic scale and the physical and chemical phenomena for the first time so as to draw flow pattern maps of local disturbance field. Therefore, this will bring the EOR research to a new field and has a double significance of theoretical innovation and practical application.