海上低渗透油藏水力压裂技术适应性评价

Evaluation of Hydraulic Fracturing Technology in Offshore Low Permeability Reservoirs

由于海上低渗透油田比陆上油田具有更高的开发风险,合理的水力压裂改造措施对提高其经济效益起着至关重要的作用。针对南海某低渗透油田新区块建立了压裂改造图版,以评价该区油井的压裂改造技术适应性。研究结果认为:目标油田的油层组Ⅰ和Ⅱ适合采取压裂措施,推荐两层合压。油层组Ⅲ因为下部0.9 m紧邻水层,不适合采取压裂措施。若已知该区块开发需要满足的经济产量,还可以根据压裂改造图版进行选井选层。

Due to the higher risk of low permeability field development in offshore reservoirs than in onshore reservoirs, it is of vital importance to apply hydraulic fracturing technology in order to improve economic benefit. A plate of hydraulic fracturing is established for a new block in Nanhai Sea, which is used to evaluate the adaptability of hydraulic fracturing technology. Results show that the target oil layer I and II could apply hydraulic fracturing treatment together, while oil layer III couldn＇ t apply the treatment because the adjacent water layer is only 0.9 m away. Well and layer could also be selected if the economic productivity of the block is given according to the plate.