【作者】 岳志强；

【导师】 王杰祥； 李绍泽；

【作者基本信息】 中国石油大学 ， 石油与天然气工程， 2008， 硕士

【摘要】 辽河油田冷41块为边底水活跃的超稠油油藏,目前采取蒸汽吞吐方式开采。边底水的侵入始终伴随着油藏开发的全过程,随着蒸汽吞吐轮次的增加,油井水淹现象进一步加剧,区块产量受到很大的影响,边底水侵入成为影响区块开发效果的主要因素。通过对油藏边底水的静态认识,通过动态分析在开发的各个阶段的水侵方式、水侵速度等规律及其对蒸汽吞吐效果影响的基础上,提出相应有效的防水、治水等措施以延长吞吐有效期、提高吞吐效果的技术对策,以利于冷41块更加合理高效的开发;并针对冷41块油藏地质特点,研制出一种高温调剖剂/水玻璃粘土胶/树脂粉煤灰高强度复合堵剂。该复合堵剂形成封堵强度低、中、高阶梯式三段塞堵水屏障,封堵强度高,耐温性好,有效地控制了边底水锥进。在现场实施过程中取得了明显增油降水效果,解决了边底水对该区块的危害问题,达到稳油控水的目的。更多还原

【Abstract】 Block Leng41 in Liaohe Oilfield is a super heavy oil reservoir with active edge water and bottom water, and it is produced with steam stimulation at present. The edge water and bottom water invasion in oil wells has always been companied by the whole process of reservoir development. With steam injection cycles increase, the problem of water invasion in the well becomes more and more severe, which significantly affects the oil production of the Block. The edge water-out and bottom water-out is the key factor affecting oil production in the block. This paper gives the research of static knowledge of edge water and bottom water. On the basis of static analysis of water-out regular pattern and water-out rate during each phase of reservoir development as well as the edge water-out and bottom water-out effects on steam huff & puff, the effective water control and water management methods have been proposed for extending effective period of huff and puff and improving steam stimulation results to get reasonable and efficient development of Block Leng41. In terms of geologic features of Block Leng41, a high temperature profile control agent silicate clay gel/resin fly ash complex water plugging agent with high strength has been developed. With this kind of complex plugging agent, three staged water plugging barriers with low, medium and high strength are formed, having good temperature resistance and high plugging strength to control edge water and bottom water coning. In field application, the incremental oil and the water reduction have been obtained and the damage due to edge water-out and bottom water-out has been resolved. The purposes of keeping oil production stable and water control have been achieved.更多还原