合水地区长7段致密油效益建产技术探讨

Discussion on the Construction Technology of Tight Oil in Chang 7 Section of Heshui Area

本文以鄂尔多斯盆地合水地区长7油层组作为研究对象,以多学科交叉研究为指导思想。结合文献调研及生产数据等资料,结合前人研究成果并借鉴邻区研究经验,针对长7段油藏“小而散”且致密的特点,对长7段致密油勘探开发模式与效益建产模式进行了研究和探索。得出了采取小井距、长水平段、大规模压裂的配套技术与水平井整体开发技术相结合的方法,将难采,低产的小区块油气储层连通成片,提高油气采收率,降低钻井成本的结论。通过增加勘探开发方面的投入,以更加充分的资料总结出地区油气富集规律,结合效益建产配套指标,因地制宜,达到“产效并重,产效协调”的效益建产目标。

This paper takes the Chang 7 oil layer group in the Heshui area of the Ordos Basin as the research object, and takes the multidisciplinary research as the guiding ideology. Combining literature research and production data, combined with previous research results and drawing on the experience of neighboring areas, aiming at the characteristics of "small and scattered" and compact of Chang 7 section reservoir, the exploration and development mode and the benefit construction mode of the Chang 7 section tight oil are researched and explored. The method of combining small well spacing, long horizontal section and large-scale fracturing technology with the overall development technology of horizontal wells is obtained, which connects the difficult and low-yield block oil and gas reservoirs into pieces to improve oil and gas recovery and reduce drilling costs. By increasing investment in exploration and development, we will summarize the regional oil and gas enrichment rules with more sufficient data, combine the indicators for effective production and construction, and adapt to local conditions to achieve the goal of "effective production and efficiency, coordination of production efficiency".